/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 SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/forester-heap/sll-token-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 23:24:21,080 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 23:24:21,083 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 23:24:21,127 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 23:24:21,127 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 23:24:21,138 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 23:24:21,140 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 23:24:21,144 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 23:24:21,147 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 23:24:21,150 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 23:24:21,151 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 23:24:21,152 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 23:24:21,152 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 23:24:21,155 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 23:24:21,156 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 23:24:21,157 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 23:24:21,158 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 23:24:21,160 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 23:24:21,162 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 23:24:21,164 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 23:24:21,165 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 23:24:21,168 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 23:24:21,169 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 23:24:21,170 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 23:24:21,175 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 23:24:21,175 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 23:24:21,175 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 23:24:21,178 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 23:24:21,179 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 23:24:21,179 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 23:24:21,180 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 23:24:21,182 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 23:24:21,183 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 23:24:21,184 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 23:24:21,185 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 23:24:21,185 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 23:24:21,186 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 23:24:21,186 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 23:24:21,186 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 23:24:21,187 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 23:24:21,188 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 23:24:21,189 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 [2020-10-14 23:24:21,234 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 23:24:21,235 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 23:24:21,237 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 23:24:21,237 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 23:24:21,237 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 23:24:21,237 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 23:24:21,238 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 23:24:21,238 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 23:24:21,238 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 23:24:21,238 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 23:24:21,239 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 23:24:21,240 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 23:24:21,240 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 23:24:21,240 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 23:24:21,241 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 23:24:21,241 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 23:24:21,241 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 23:24:21,241 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 23:24:21,241 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 23:24:21,242 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 23:24:21,242 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 23:24:21,242 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 23:24:21,242 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 23:24:21,242 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 23:24:21,243 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 23:24:21,243 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 23:24:21,243 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 23:24:21,243 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 23:24:21,243 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 23:24:21,244 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 -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 23:24:21,557 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 23:24:21,573 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 23:24:21,581 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 23:24:21,585 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 23:24:21,586 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 23:24:21,586 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/sll-token-2.i [2020-10-14 23:24:21,650 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fe792597a/ec8d4f5f6203451fbd51e067d37f41d6/FLAG49ee430d5 [2020-10-14 23:24:22,181 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 23:24:22,181 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/forester-heap/sll-token-2.i [2020-10-14 23:24:22,198 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fe792597a/ec8d4f5f6203451fbd51e067d37f41d6/FLAG49ee430d5 [2020-10-14 23:24:22,502 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fe792597a/ec8d4f5f6203451fbd51e067d37f41d6 [2020-10-14 23:24:22,510 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 23:24:22,511 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 23:24:22,512 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 23:24:22,513 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 23:24:22,515 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 23:24:22,516 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:24:22" (1/1) ... [2020-10-14 23:24:22,518 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@99836cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:24:22, skipping insertion in model container [2020-10-14 23:24:22,519 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:24:22" (1/1) ... [2020-10-14 23:24:22,525 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 23:24:22,583 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 23:24:22,999 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 23:24:23,011 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 23:24:23,055 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 23:24:23,122 INFO L208 MainTranslator]: Completed translation [2020-10-14 23:24:23,124 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:24:23 WrapperNode [2020-10-14 23:24:23,124 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 23:24:23,125 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 23:24:23,125 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 23:24:23,125 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 23:24:23,137 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:24:23" (1/1) ... [2020-10-14 23:24:23,137 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:24:23" (1/1) ... [2020-10-14 23:24:23,156 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:24:23" (1/1) ... [2020-10-14 23:24:23,157 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:24:23" (1/1) ... [2020-10-14 23:24:23,174 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:24:23" (1/1) ... [2020-10-14 23:24:23,182 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:24:23" (1/1) ... [2020-10-14 23:24:23,185 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:24:23" (1/1) ... [2020-10-14 23:24:23,192 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 23:24:23,192 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 23:24:23,192 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 23:24:23,193 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 23:24:23,193 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:24:23" (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 [2020-10-14 23:24:23,266 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 23:24:23,267 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 23:24:23,267 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 23:24:23,267 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-14 23:24:23,268 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-14 23:24:23,268 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-14 23:24:23,268 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-14 23:24:23,268 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-14 23:24:23,268 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-14 23:24:23,268 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-14 23:24:23,269 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-14 23:24:23,269 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-14 23:24:23,269 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-14 23:24:23,269 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-14 23:24:23,269 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-14 23:24:23,270 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-14 23:24:23,270 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-14 23:24:23,270 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-14 23:24:23,270 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-14 23:24:23,270 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-14 23:24:23,271 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-14 23:24:23,272 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-14 23:24:23,272 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-14 23:24:23,272 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-14 23:24:23,272 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-14 23:24:23,272 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-14 23:24:23,272 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-14 23:24:23,273 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-14 23:24:23,273 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-14 23:24:23,273 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-14 23:24:23,273 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-14 23:24:23,273 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-14 23:24:23,274 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-14 23:24:23,274 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-14 23:24:23,274 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-14 23:24:23,274 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-14 23:24:23,274 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-14 23:24:23,275 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-14 23:24:23,275 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-14 23:24:23,275 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-14 23:24:23,275 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-14 23:24:23,275 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-14 23:24:23,276 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-14 23:24:23,276 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-14 23:24:23,276 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-14 23:24:23,276 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-14 23:24:23,276 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-14 23:24:23,276 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-14 23:24:23,276 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-14 23:24:23,277 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-14 23:24:23,277 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-14 23:24:23,277 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-14 23:24:23,277 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-14 23:24:23,277 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-14 23:24:23,277 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-14 23:24:23,278 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-14 23:24:23,278 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-14 23:24:23,278 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-14 23:24:23,278 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-14 23:24:23,278 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-14 23:24:23,278 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-14 23:24:23,278 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-14 23:24:23,279 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 23:24:23,279 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-14 23:24:23,279 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-14 23:24:23,279 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-14 23:24:23,279 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 23:24:23,279 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-14 23:24:23,279 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-14 23:24:23,280 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-14 23:24:23,280 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-14 23:24:23,280 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-14 23:24:23,280 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-14 23:24:23,280 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-14 23:24:23,280 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-14 23:24:23,281 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-14 23:24:23,281 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-14 23:24:23,281 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-14 23:24:23,281 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-14 23:24:23,281 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-14 23:24:23,281 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-14 23:24:23,282 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-14 23:24:23,282 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-14 23:24:23,282 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-14 23:24:23,282 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-14 23:24:23,282 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-14 23:24:23,282 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-14 23:24:23,282 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-14 23:24:23,283 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-14 23:24:23,283 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-14 23:24:23,283 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-14 23:24:23,283 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-14 23:24:23,283 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-14 23:24:23,283 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-14 23:24:23,283 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-14 23:24:23,284 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-14 23:24:23,284 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-14 23:24:23,284 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-14 23:24:23,284 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-14 23:24:23,284 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-14 23:24:23,284 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-14 23:24:23,284 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-14 23:24:23,285 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-14 23:24:23,285 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-14 23:24:23,285 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-14 23:24:23,285 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-14 23:24:23,285 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 23:24:23,285 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 23:24:23,285 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 23:24:23,286 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-14 23:24:23,286 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-14 23:24:23,286 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-14 23:24:23,286 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-14 23:24:23,286 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-14 23:24:23,286 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 23:24:23,286 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 23:24:23,287 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 23:24:23,801 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 23:24:23,802 INFO L295 CfgBuilder]: Removed 15 assume(true) statements. [2020-10-14 23:24:23,806 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:24:23 BoogieIcfgContainer [2020-10-14 23:24:23,806 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 23:24:23,808 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 23:24:23,808 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 23:24:23,811 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 23:24:23,812 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:24:22" (1/3) ... [2020-10-14 23:24:23,813 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5abaf0b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:24:23, skipping insertion in model container [2020-10-14 23:24:23,813 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:24:23" (2/3) ... [2020-10-14 23:24:23,813 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5abaf0b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:24:23, skipping insertion in model container [2020-10-14 23:24:23,814 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:24:23" (3/3) ... [2020-10-14 23:24:23,815 INFO L109 eAbstractionObserver]: Analyzing ICFG sll-token-2.i [2020-10-14 23:24:23,826 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 23:24:23,834 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-10-14 23:24:23,848 INFO L251 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-10-14 23:24:23,873 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 23:24:23,873 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 23:24:23,873 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 23:24:23,874 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 23:24:23,874 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 23:24:23,874 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 23:24:23,874 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 23:24:23,874 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 23:24:23,894 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states. [2020-10-14 23:24:23,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-14 23:24:23,900 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:24:23,901 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:24:23,902 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:24:23,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:24:23,908 INFO L82 PathProgramCache]: Analyzing trace with hash 68430596, now seen corresponding path program 1 times [2020-10-14 23:24:23,917 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:24:23,918 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1528092248] [2020-10-14 23:24:23,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:24:24,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:24,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:24,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:24,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:24,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 23:24:24,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:24:24,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 356 [2020-10-14 23:24:24,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:24,395 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:24,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 23:24:24,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:24:24,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 23:24:24,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 23:24:24,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:24:24,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:24,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:24,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:24,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:24:24,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:24:24,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 23:24:24,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:24,497 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:24,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:24:24,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:24:24,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:24:24,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:24:24,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:24:24,506 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1528092248] [2020-10-14 23:24:24,507 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:24:24,508 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 23:24:24,509 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289255509] [2020-10-14 23:24:24,514 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 23:24:24,514 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:24:24,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 23:24:24,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 23:24:24,532 INFO L87 Difference]: Start difference. First operand 49 states. Second operand 5 states. [2020-10-14 23:24:24,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:24:24,728 INFO L93 Difference]: Finished difference Result 122 states and 186 transitions. [2020-10-14 23:24:24,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 23:24:24,730 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-10-14 23:24:24,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:24:24,741 INFO L225 Difference]: With dead ends: 122 [2020-10-14 23:24:24,741 INFO L226 Difference]: Without dead ends: 65 [2020-10-14 23:24:24,745 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 [2020-10-14 23:24:24,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-10-14 23:24:24,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 39. [2020-10-14 23:24:24,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-14 23:24:24,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2020-10-14 23:24:24,792 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 10 [2020-10-14 23:24:24,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:24:24,792 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2020-10-14 23:24:24,792 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 23:24:24,792 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2020-10-14 23:24:24,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-14 23:24:24,793 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:24:24,793 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:24:24,794 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 23:24:24,794 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:24:24,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:24:24,795 INFO L82 PathProgramCache]: Analyzing trace with hash -409997773, now seen corresponding path program 1 times [2020-10-14 23:24:24,795 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:24:24,795 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [256118273] [2020-10-14 23:24:24,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:24:24,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:24,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:24,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:25,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:25,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 23:24:25,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:24:25,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 419 [2020-10-14 23:24:25,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:25,235 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:25,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:24:25,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:24:25,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:24:25,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:24:25,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:24:25,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:25,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:25,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:25,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:24:25,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:24:25,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:24:25,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:25,309 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:25,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:24:25,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:24:25,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:24:25,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:24:25,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:24:25,316 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [256118273] [2020-10-14 23:24:25,316 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:24:25,316 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 23:24:25,317 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015986815] [2020-10-14 23:24:25,319 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 23:24:25,319 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:24:25,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 23:24:25,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 23:24:25,320 INFO L87 Difference]: Start difference. First operand 39 states and 41 transitions. Second operand 6 states. [2020-10-14 23:24:25,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:24:25,528 INFO L93 Difference]: Finished difference Result 58 states and 62 transitions. [2020-10-14 23:24:25,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 23:24:25,528 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-10-14 23:24:25,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:24:25,530 INFO L225 Difference]: With dead ends: 58 [2020-10-14 23:24:25,530 INFO L226 Difference]: Without dead ends: 56 [2020-10-14 23:24:25,531 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 [2020-10-14 23:24:25,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-14 23:24:25,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 48. [2020-10-14 23:24:25,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-10-14 23:24:25,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 52 transitions. [2020-10-14 23:24:25,543 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 52 transitions. Word has length 16 [2020-10-14 23:24:25,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:24:25,543 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 52 transitions. [2020-10-14 23:24:25,543 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 23:24:25,544 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 52 transitions. [2020-10-14 23:24:25,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-14 23:24:25,544 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:24:25,545 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:24:25,545 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 23:24:25,545 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:24:25,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:24:25,546 INFO L82 PathProgramCache]: Analyzing trace with hash -409960037, now seen corresponding path program 1 times [2020-10-14 23:24:25,546 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:24:25,547 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1292736732] [2020-10-14 23:24:25,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:24:25,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:25,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:25,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:25,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 23:24:25,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:24:25,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-14 23:24:25,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:25,677 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:25,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:24:25,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:24:25,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 23:24:25,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:24:25,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:24:25,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:25,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:25,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:25,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:24:25,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:24:25,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 23:24:25,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:25,733 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:25,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:24:25,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:24:25,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:24:25,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:24:25,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:24:25,737 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1292736732] [2020-10-14 23:24:25,737 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:24:25,738 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 23:24:25,738 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291103855] [2020-10-14 23:24:25,738 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 23:24:25,739 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:24:25,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 23:24:25,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 23:24:25,739 INFO L87 Difference]: Start difference. First operand 48 states and 52 transitions. Second operand 6 states. [2020-10-14 23:24:25,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:24:25,890 INFO L93 Difference]: Finished difference Result 76 states and 81 transitions. [2020-10-14 23:24:25,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 23:24:25,891 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-10-14 23:24:25,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:24:25,892 INFO L225 Difference]: With dead ends: 76 [2020-10-14 23:24:25,892 INFO L226 Difference]: Without dead ends: 50 [2020-10-14 23:24:25,893 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 [2020-10-14 23:24:25,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-14 23:24:25,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 48. [2020-10-14 23:24:25,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-10-14 23:24:25,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 51 transitions. [2020-10-14 23:24:25,901 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 51 transitions. Word has length 16 [2020-10-14 23:24:25,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:24:25,901 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 51 transitions. [2020-10-14 23:24:25,901 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 23:24:25,901 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 51 transitions. [2020-10-14 23:24:25,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-14 23:24:25,902 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:24:25,902 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:24:25,902 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 23:24:25,903 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:24:25,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:24:25,903 INFO L82 PathProgramCache]: Analyzing trace with hash -1407314597, now seen corresponding path program 1 times [2020-10-14 23:24:25,903 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:24:25,904 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [487904379] [2020-10-14 23:24:25,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:24:25,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:25,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:26,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:26,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 23:24:26,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:24:26,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-14 23:24:26,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:26,013 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:26,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 23:24:26,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:24:26,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 23:24:26,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:24:26,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:24:26,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:26,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:26,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:26,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:24:26,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:24:26,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:24:26,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:26,152 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:26,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:24:26,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:24:26,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:24:26,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:24:26,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:24:26,160 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [487904379] [2020-10-14 23:24:26,160 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:24:26,160 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-14 23:24:26,161 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359608571] [2020-10-14 23:24:26,161 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 23:24:26,161 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:24:26,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 23:24:26,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-14 23:24:26,164 INFO L87 Difference]: Start difference. First operand 48 states and 51 transitions. Second operand 7 states. [2020-10-14 23:24:26,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:24:26,446 INFO L93 Difference]: Finished difference Result 56 states and 59 transitions. [2020-10-14 23:24:26,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 23:24:26,447 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2020-10-14 23:24:26,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:24:26,448 INFO L225 Difference]: With dead ends: 56 [2020-10-14 23:24:26,449 INFO L226 Difference]: Without dead ends: 54 [2020-10-14 23:24:26,450 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-14 23:24:26,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-14 23:24:26,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 52. [2020-10-14 23:24:26,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-14 23:24:26,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 55 transitions. [2020-10-14 23:24:26,470 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 55 transitions. Word has length 20 [2020-10-14 23:24:26,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:24:26,472 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 55 transitions. [2020-10-14 23:24:26,472 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 23:24:26,472 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 55 transitions. [2020-10-14 23:24:26,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-14 23:24:26,473 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:24:26,474 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:24:26,474 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 23:24:26,475 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:24:26,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:24:26,475 INFO L82 PathProgramCache]: Analyzing trace with hash -1742711588, now seen corresponding path program 1 times [2020-10-14 23:24:26,476 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:24:26,478 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2046529002] [2020-10-14 23:24:26,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:24:26,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:26,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:26,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:27,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:27,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 23:24:27,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:24:27,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 554 [2020-10-14 23:24:27,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:27,061 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:27,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 23:24:27,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:24:27,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 23:24:27,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:24:27,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:24:27,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:27,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:27,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:27,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:24:27,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:24:27,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 23:24:27,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:27,194 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:27,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:24:27,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:24:27,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:24:27,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:24:27,202 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:24:27,202 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2046529002] [2020-10-14 23:24:27,203 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:24:27,203 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 23:24:27,203 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980946673] [2020-10-14 23:24:27,204 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 23:24:27,204 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:24:27,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 23:24:27,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-14 23:24:27,205 INFO L87 Difference]: Start difference. First operand 52 states and 55 transitions. Second operand 7 states. [2020-10-14 23:24:27,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:24:27,496 INFO L93 Difference]: Finished difference Result 78 states and 82 transitions. [2020-10-14 23:24:27,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 23:24:27,497 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2020-10-14 23:24:27,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:24:27,498 INFO L225 Difference]: With dead ends: 78 [2020-10-14 23:24:27,498 INFO L226 Difference]: Without dead ends: 60 [2020-10-14 23:24:27,499 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-14 23:24:27,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-14 23:24:27,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 54. [2020-10-14 23:24:27,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-14 23:24:27,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 57 transitions. [2020-10-14 23:24:27,512 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 57 transitions. Word has length 20 [2020-10-14 23:24:27,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:24:27,513 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 57 transitions. [2020-10-14 23:24:27,513 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 23:24:27,513 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 57 transitions. [2020-10-14 23:24:27,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-14 23:24:27,514 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:24:27,514 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:24:27,514 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 23:24:27,514 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:24:27,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:24:27,515 INFO L82 PathProgramCache]: Analyzing trace with hash -1742673852, now seen corresponding path program 1 times [2020-10-14 23:24:27,515 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:24:27,515 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [896599207] [2020-10-14 23:24:27,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:24:27,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:27,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:27,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:27,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 23:24:27,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:24:27,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-10-14 23:24:27,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:27,678 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:27,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 23:24:27,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:24:27,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 23:24:27,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:24:27,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:24:27,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:27,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:27,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:27,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:24:27,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:24:27,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 23:24:27,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:27,756 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:27,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:24:27,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:24:27,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:24:27,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:24:27,762 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:24:27,763 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [896599207] [2020-10-14 23:24:27,763 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:24:27,764 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 23:24:27,764 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774098094] [2020-10-14 23:24:27,765 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 23:24:27,765 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:24:27,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 23:24:27,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-14 23:24:27,766 INFO L87 Difference]: Start difference. First operand 54 states and 57 transitions. Second operand 7 states. [2020-10-14 23:24:28,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:24:28,017 INFO L93 Difference]: Finished difference Result 60 states and 63 transitions. [2020-10-14 23:24:28,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 23:24:28,017 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2020-10-14 23:24:28,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:24:28,018 INFO L225 Difference]: With dead ends: 60 [2020-10-14 23:24:28,018 INFO L226 Difference]: Without dead ends: 58 [2020-10-14 23:24:28,019 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-14 23:24:28,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-14 23:24:28,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 56. [2020-10-14 23:24:28,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-14 23:24:28,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 59 transitions. [2020-10-14 23:24:28,027 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 59 transitions. Word has length 20 [2020-10-14 23:24:28,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:24:28,028 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 59 transitions. [2020-10-14 23:24:28,028 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 23:24:28,028 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 59 transitions. [2020-10-14 23:24:28,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-14 23:24:28,029 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:24:28,029 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] [2020-10-14 23:24:28,030 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 23:24:28,030 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:24:28,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:24:28,030 INFO L82 PathProgramCache]: Analyzing trace with hash 961492076, now seen corresponding path program 1 times [2020-10-14 23:24:28,030 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:24:28,031 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1308533986] [2020-10-14 23:24:28,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:24:28,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:28,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:28,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:28,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:28,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:28,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:28,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-14 23:24:28,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 23:24:28,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 331 [2020-10-14 23:24:28,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:28,376 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:28,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 23:24:28,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:24:28,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 23:24:28,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:24:28,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:24:28,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:28,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:28,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:28,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:24:28,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:24:28,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:24:28,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:28,446 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:28,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:24:28,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:24:28,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:24:28,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:24:28,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:24:28,471 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1308533986] [2020-10-14 23:24:28,471 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:24:28,471 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-14 23:24:28,471 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731288781] [2020-10-14 23:24:28,472 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 23:24:28,472 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:24:28,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 23:24:28,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-14 23:24:28,473 INFO L87 Difference]: Start difference. First operand 56 states and 59 transitions. Second operand 7 states. [2020-10-14 23:24:28,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:24:28,642 INFO L93 Difference]: Finished difference Result 70 states and 73 transitions. [2020-10-14 23:24:28,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 23:24:28,642 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 26 [2020-10-14 23:24:28,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:24:28,643 INFO L225 Difference]: With dead ends: 70 [2020-10-14 23:24:28,644 INFO L226 Difference]: Without dead ends: 66 [2020-10-14 23:24:28,644 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-10-14 23:24:28,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-14 23:24:28,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 60. [2020-10-14 23:24:28,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-10-14 23:24:28,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 63 transitions. [2020-10-14 23:24:28,651 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 63 transitions. Word has length 26 [2020-10-14 23:24:28,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:24:28,651 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 63 transitions. [2020-10-14 23:24:28,652 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 23:24:28,652 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 63 transitions. [2020-10-14 23:24:28,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-14 23:24:28,653 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:24:28,653 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] [2020-10-14 23:24:28,653 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 23:24:28,653 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:24:28,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:24:28,654 INFO L82 PathProgramCache]: Analyzing trace with hash 1379191243, now seen corresponding path program 1 times [2020-10-14 23:24:28,654 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:24:28,654 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [838217848] [2020-10-14 23:24:28,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:24:28,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:28,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:28,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:28,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:28,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-14 23:24:28,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:24:28,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 188 [2020-10-14 23:24:28,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:28,857 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:28,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:24:28,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:24:28,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 23:24:28,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:24:28,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:24:28,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:28,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:28,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:28,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:24:28,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:24:28,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:24:28,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:28,962 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:28,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:24:28,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:24:28,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:24:28,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:24:28,970 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:24:28,971 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [838217848] [2020-10-14 23:24:28,971 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:24:28,972 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 23:24:28,972 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092057692] [2020-10-14 23:24:28,972 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 23:24:28,973 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:24:28,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 23:24:28,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-14 23:24:28,973 INFO L87 Difference]: Start difference. First operand 60 states and 63 transitions. Second operand 8 states. [2020-10-14 23:24:29,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:24:29,234 INFO L93 Difference]: Finished difference Result 87 states and 92 transitions. [2020-10-14 23:24:29,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 23:24:29,234 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 26 [2020-10-14 23:24:29,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:24:29,235 INFO L225 Difference]: With dead ends: 87 [2020-10-14 23:24:29,236 INFO L226 Difference]: Without dead ends: 85 [2020-10-14 23:24:29,236 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2020-10-14 23:24:29,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-10-14 23:24:29,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 77. [2020-10-14 23:24:29,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-14 23:24:29,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 82 transitions. [2020-10-14 23:24:29,244 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 82 transitions. Word has length 26 [2020-10-14 23:24:29,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:24:29,245 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 82 transitions. [2020-10-14 23:24:29,245 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 23:24:29,245 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 82 transitions. [2020-10-14 23:24:29,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-14 23:24:29,246 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:24:29,246 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:24:29,246 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 23:24:29,247 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:24:29,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:24:29,247 INFO L82 PathProgramCache]: Analyzing trace with hash 1379228979, now seen corresponding path program 1 times [2020-10-14 23:24:29,247 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:24:29,248 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [393363496] [2020-10-14 23:24:29,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:24:29,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:29,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:29,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:29,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-14 23:24:29,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:24:29,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-10-14 23:24:29,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:29,404 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:29,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:24:29,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:24:29,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 23:24:29,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:24:29,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:24:29,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:29,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:29,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:29,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:24:29,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:24:29,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:24:29,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:29,489 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:29,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:24:29,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:24:29,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:24:29,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:24:29,495 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:24:29,495 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [393363496] [2020-10-14 23:24:29,496 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:24:29,496 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 23:24:29,496 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651558781] [2020-10-14 23:24:29,497 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 23:24:29,497 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:24:29,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 23:24:29,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-14 23:24:29,498 INFO L87 Difference]: Start difference. First operand 77 states and 82 transitions. Second operand 8 states. [2020-10-14 23:24:29,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:24:29,758 INFO L93 Difference]: Finished difference Result 105 states and 111 transitions. [2020-10-14 23:24:29,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 23:24:29,758 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 26 [2020-10-14 23:24:29,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:24:29,759 INFO L225 Difference]: With dead ends: 105 [2020-10-14 23:24:29,759 INFO L226 Difference]: Without dead ends: 79 [2020-10-14 23:24:29,760 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2020-10-14 23:24:29,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-10-14 23:24:29,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 77. [2020-10-14 23:24:29,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-14 23:24:29,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 81 transitions. [2020-10-14 23:24:29,767 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 81 transitions. Word has length 26 [2020-10-14 23:24:29,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:24:29,767 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 81 transitions. [2020-10-14 23:24:29,768 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 23:24:29,768 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 81 transitions. [2020-10-14 23:24:29,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-14 23:24:29,769 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:24:29,769 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] [2020-10-14 23:24:29,769 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 23:24:29,769 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:24:29,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:24:29,770 INFO L82 PathProgramCache]: Analyzing trace with hash 622688967, now seen corresponding path program 1 times [2020-10-14 23:24:29,770 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:24:29,770 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1386994674] [2020-10-14 23:24:29,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:24:29,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:29,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:29,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:29,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:29,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:29,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:30,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:30,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:30,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-14 23:24:30,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 23:24:30,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1129 [2020-10-14 23:24:30,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:30,912 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:30,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 23:24:30,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:24:30,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 23:24:30,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:24:30,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:24:30,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:30,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:30,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:30,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:24:30,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:24:30,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:24:30,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:30,990 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:30,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:24:30,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:24:30,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:24:30,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:24:30,995 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:24:30,995 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1386994674] [2020-10-14 23:24:30,996 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:24:30,996 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-14 23:24:30,996 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896721187] [2020-10-14 23:24:30,997 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 23:24:30,997 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:24:30,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 23:24:30,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-14 23:24:30,997 INFO L87 Difference]: Start difference. First operand 77 states and 81 transitions. Second operand 7 states. [2020-10-14 23:24:31,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:24:31,163 INFO L93 Difference]: Finished difference Result 83 states and 87 transitions. [2020-10-14 23:24:31,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 23:24:31,164 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 28 [2020-10-14 23:24:31,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:24:31,165 INFO L225 Difference]: With dead ends: 83 [2020-10-14 23:24:31,165 INFO L226 Difference]: Without dead ends: 62 [2020-10-14 23:24:31,166 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-10-14 23:24:31,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-10-14 23:24:31,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2020-10-14 23:24:31,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-10-14 23:24:31,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 65 transitions. [2020-10-14 23:24:31,171 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 65 transitions. Word has length 28 [2020-10-14 23:24:31,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:24:31,172 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 65 transitions. [2020-10-14 23:24:31,172 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 23:24:31,172 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 65 transitions. [2020-10-14 23:24:31,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-14 23:24:31,173 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:24:31,173 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] [2020-10-14 23:24:31,173 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 23:24:31,174 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:24:31,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:24:31,174 INFO L82 PathProgramCache]: Analyzing trace with hash 993748211, now seen corresponding path program 1 times [2020-10-14 23:24:31,174 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:24:31,175 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1477275050] [2020-10-14 23:24:31,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:24:31,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:31,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:31,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:31,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-14 23:24:31,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:24:31,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-10-14 23:24:31,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:31,354 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:31,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 23:24:31,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:24:31,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-14 23:24:31,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:24:31,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:24:31,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:31,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:31,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:31,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:24:31,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:24:31,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:24:31,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:31,456 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:31,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:24:31,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:24:31,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:24:31,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:24:31,464 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:24:31,464 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1477275050] [2020-10-14 23:24:31,465 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:24:31,465 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 23:24:31,465 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935697407] [2020-10-14 23:24:31,465 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 23:24:31,466 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:24:31,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 23:24:31,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-14 23:24:31,466 INFO L87 Difference]: Start difference. First operand 62 states and 65 transitions. Second operand 9 states. [2020-10-14 23:24:31,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:24:31,684 INFO L93 Difference]: Finished difference Result 70 states and 73 transitions. [2020-10-14 23:24:31,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 23:24:31,684 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 30 [2020-10-14 23:24:31,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:24:31,685 INFO L225 Difference]: With dead ends: 70 [2020-10-14 23:24:31,685 INFO L226 Difference]: Without dead ends: 68 [2020-10-14 23:24:31,686 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-10-14 23:24:31,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-14 23:24:31,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 66. [2020-10-14 23:24:31,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-14 23:24:31,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 69 transitions. [2020-10-14 23:24:31,691 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 69 transitions. Word has length 30 [2020-10-14 23:24:31,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:24:31,691 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 69 transitions. [2020-10-14 23:24:31,692 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 23:24:31,692 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 69 transitions. [2020-10-14 23:24:31,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-14 23:24:31,693 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:24:31,693 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:24:31,693 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 23:24:31,693 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:24:31,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:24:31,694 INFO L82 PathProgramCache]: Analyzing trace with hash -117984972, now seen corresponding path program 2 times [2020-10-14 23:24:31,694 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:24:31,694 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1518988592] [2020-10-14 23:24:31,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:24:31,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:31,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:31,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:32,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:32,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-14 23:24:32,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:24:32,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 300 [2020-10-14 23:24:32,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:32,010 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:32,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 23:24:32,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:24:32,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 23:24:32,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:24:32,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:24:32,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:32,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:32,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:32,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:24:32,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:24:32,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:24:32,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:32,155 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:32,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:24:32,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:24:32,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:24:32,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:24:32,163 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:24:32,164 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1518988592] [2020-10-14 23:24:32,164 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:24:32,164 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 23:24:32,164 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744327690] [2020-10-14 23:24:32,165 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 23:24:32,165 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:24:32,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 23:24:32,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-14 23:24:32,166 INFO L87 Difference]: Start difference. First operand 66 states and 69 transitions. Second operand 9 states. [2020-10-14 23:24:32,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:24:32,531 INFO L93 Difference]: Finished difference Result 94 states and 98 transitions. [2020-10-14 23:24:32,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 23:24:32,531 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 30 [2020-10-14 23:24:32,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:24:32,532 INFO L225 Difference]: With dead ends: 94 [2020-10-14 23:24:32,532 INFO L226 Difference]: Without dead ends: 76 [2020-10-14 23:24:32,533 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2020-10-14 23:24:32,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-14 23:24:32,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 70. [2020-10-14 23:24:32,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-10-14 23:24:32,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 73 transitions. [2020-10-14 23:24:32,539 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 73 transitions. Word has length 30 [2020-10-14 23:24:32,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:24:32,539 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 73 transitions. [2020-10-14 23:24:32,539 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 23:24:32,539 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 73 transitions. [2020-10-14 23:24:32,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-14 23:24:32,540 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:24:32,540 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:24:32,540 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 23:24:32,540 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:24:32,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:24:32,541 INFO L82 PathProgramCache]: Analyzing trace with hash -117947236, now seen corresponding path program 2 times [2020-10-14 23:24:32,541 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:24:32,541 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [572209913] [2020-10-14 23:24:32,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:24:32,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:32,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:32,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:32,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-14 23:24:32,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:24:32,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-10-14 23:24:32,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:32,728 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:32,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 23:24:32,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:24:32,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-14 23:24:32,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:24:32,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:24:32,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:32,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:32,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:32,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:24:32,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:24:32,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:24:32,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:32,851 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:32,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:24:32,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:24:32,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:24:32,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:24:32,861 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:24:32,861 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [572209913] [2020-10-14 23:24:32,862 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:24:32,862 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 23:24:32,862 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939357586] [2020-10-14 23:24:32,863 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 23:24:32,863 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:24:32,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 23:24:32,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-14 23:24:32,864 INFO L87 Difference]: Start difference. First operand 70 states and 73 transitions. Second operand 9 states. [2020-10-14 23:24:33,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:24:33,238 INFO L93 Difference]: Finished difference Result 91 states and 95 transitions. [2020-10-14 23:24:33,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 23:24:33,238 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 30 [2020-10-14 23:24:33,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:24:33,239 INFO L225 Difference]: With dead ends: 91 [2020-10-14 23:24:33,240 INFO L226 Difference]: Without dead ends: 89 [2020-10-14 23:24:33,240 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2020-10-14 23:24:33,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-10-14 23:24:33,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 87. [2020-10-14 23:24:33,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-10-14 23:24:33,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 91 transitions. [2020-10-14 23:24:33,247 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 91 transitions. Word has length 30 [2020-10-14 23:24:33,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:24:33,248 INFO L479 AbstractCegarLoop]: Abstraction has 87 states and 91 transitions. [2020-10-14 23:24:33,248 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 23:24:33,248 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 91 transitions. [2020-10-14 23:24:33,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-14 23:24:33,249 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:24:33,249 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:24:33,249 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 23:24:33,249 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:24:33,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:24:33,250 INFO L82 PathProgramCache]: Analyzing trace with hash 733433733, now seen corresponding path program 3 times [2020-10-14 23:24:33,250 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:24:33,250 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1707247566] [2020-10-14 23:24:33,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:24:33,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:33,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:33,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:33,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-14 23:24:33,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:24:33,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 211 [2020-10-14 23:24:33,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:33,487 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:33,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 23:24:33,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:24:33,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 23:24:33,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:24:33,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:24:33,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:33,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:33,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:33,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:24:33,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:24:33,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:24:33,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:33,636 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:33,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:24:33,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:24:33,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:24:33,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:24:33,646 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:24:33,646 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1707247566] [2020-10-14 23:24:33,646 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:24:33,646 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 23:24:33,647 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484043543] [2020-10-14 23:24:33,647 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 23:24:33,647 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:24:33,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 23:24:33,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-14 23:24:33,648 INFO L87 Difference]: Start difference. First operand 87 states and 91 transitions. Second operand 10 states. [2020-10-14 23:24:34,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:24:34,037 INFO L93 Difference]: Finished difference Result 93 states and 97 transitions. [2020-10-14 23:24:34,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 23:24:34,038 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 34 [2020-10-14 23:24:34,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:24:34,039 INFO L225 Difference]: With dead ends: 93 [2020-10-14 23:24:34,039 INFO L226 Difference]: Without dead ends: 91 [2020-10-14 23:24:34,040 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2020-10-14 23:24:34,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-10-14 23:24:34,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 72. [2020-10-14 23:24:34,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-10-14 23:24:34,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 75 transitions. [2020-10-14 23:24:34,046 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 75 transitions. Word has length 34 [2020-10-14 23:24:34,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:24:34,047 INFO L479 AbstractCegarLoop]: Abstraction has 72 states and 75 transitions. [2020-10-14 23:24:34,047 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 23:24:34,047 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 75 transitions. [2020-10-14 23:24:34,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-14 23:24:34,048 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:24:34,048 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] [2020-10-14 23:24:34,048 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 23:24:34,048 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:24:34,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:24:34,049 INFO L82 PathProgramCache]: Analyzing trace with hash -1280806396, now seen corresponding path program 1 times [2020-10-14 23:24:34,049 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:24:34,049 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2014875789] [2020-10-14 23:24:34,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:24:34,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:34,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:34,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:34,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:34,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:34,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:34,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-14 23:24:34,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 23:24:34,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 534 [2020-10-14 23:24:34,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:34,596 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:34,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:24:34,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:24:34,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 23:24:34,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:24:34,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:24:34,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:34,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:34,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:34,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:24:34,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:24:34,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:24:34,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:34,697 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:34,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:24:34,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:24:34,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:24:34,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:24:34,703 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-14 23:24:34,704 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2014875789] [2020-10-14 23:24:34,704 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:24:34,704 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 23:24:34,704 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921117290] [2020-10-14 23:24:34,704 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 23:24:34,705 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:24:34,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 23:24:34,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-14 23:24:34,705 INFO L87 Difference]: Start difference. First operand 72 states and 75 transitions. Second operand 8 states. [2020-10-14 23:24:34,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:24:34,888 INFO L93 Difference]: Finished difference Result 78 states and 81 transitions. [2020-10-14 23:24:34,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 23:24:34,889 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 36 [2020-10-14 23:24:34,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:24:34,889 INFO L225 Difference]: With dead ends: 78 [2020-10-14 23:24:34,890 INFO L226 Difference]: Without dead ends: 74 [2020-10-14 23:24:34,890 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-14 23:24:34,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-14 23:24:34,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2020-10-14 23:24:34,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-10-14 23:24:34,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 77 transitions. [2020-10-14 23:24:34,895 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 77 transitions. Word has length 36 [2020-10-14 23:24:34,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:24:34,896 INFO L479 AbstractCegarLoop]: Abstraction has 74 states and 77 transitions. [2020-10-14 23:24:34,896 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 23:24:34,896 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 77 transitions. [2020-10-14 23:24:34,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-14 23:24:34,897 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:24:34,897 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:24:34,897 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 23:24:34,897 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:24:34,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:24:34,897 INFO L82 PathProgramCache]: Analyzing trace with hash 1648067619, now seen corresponding path program 3 times [2020-10-14 23:24:34,898 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:24:34,898 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [841326139] [2020-10-14 23:24:34,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:24:34,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:34,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:35,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:35,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:35,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-14 23:24:35,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:24:35,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 416 [2020-10-14 23:24:35,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:35,328 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:35,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 23:24:35,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:24:35,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-14 23:24:35,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:24:35,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:24:35,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:35,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:35,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:35,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:24:35,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:24:35,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:24:35,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:35,484 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:35,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:24:35,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:24:35,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:24:35,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:24:35,496 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:24:35,496 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [841326139] [2020-10-14 23:24:35,496 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:24:35,497 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 23:24:35,497 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146002973] [2020-10-14 23:24:35,497 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 23:24:35,497 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:24:35,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 23:24:35,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-14 23:24:35,498 INFO L87 Difference]: Start difference. First operand 74 states and 77 transitions. Second operand 10 states. [2020-10-14 23:24:35,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:24:35,855 INFO L93 Difference]: Finished difference Result 107 states and 112 transitions. [2020-10-14 23:24:35,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 23:24:35,855 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 36 [2020-10-14 23:24:35,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:24:35,856 INFO L225 Difference]: With dead ends: 107 [2020-10-14 23:24:35,856 INFO L226 Difference]: Without dead ends: 105 [2020-10-14 23:24:35,857 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2020-10-14 23:24:35,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-10-14 23:24:35,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 97. [2020-10-14 23:24:35,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-14 23:24:35,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 102 transitions. [2020-10-14 23:24:35,864 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 102 transitions. Word has length 36 [2020-10-14 23:24:35,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:24:35,864 INFO L479 AbstractCegarLoop]: Abstraction has 97 states and 102 transitions. [2020-10-14 23:24:35,864 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 23:24:35,864 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 102 transitions. [2020-10-14 23:24:35,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-14 23:24:35,865 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:24:35,865 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:24:35,865 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 23:24:35,865 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:24:35,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:24:35,866 INFO L82 PathProgramCache]: Analyzing trace with hash 1648105355, now seen corresponding path program 4 times [2020-10-14 23:24:35,866 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:24:35,866 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1394370883] [2020-10-14 23:24:35,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:24:35,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:35,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:36,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:36,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-14 23:24:36,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:24:36,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 230 [2020-10-14 23:24:36,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:36,121 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:36,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 23:24:36,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:24:36,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 23:24:36,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:24:36,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:24:36,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:36,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:36,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:36,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:24:36,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:24:36,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:24:36,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:36,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:36,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:24:36,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:24:36,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:24:36,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:24:36,272 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:24:36,272 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1394370883] [2020-10-14 23:24:36,272 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:24:36,273 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 23:24:36,273 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028381173] [2020-10-14 23:24:36,275 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 23:24:36,275 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:24:36,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 23:24:36,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-14 23:24:36,277 INFO L87 Difference]: Start difference. First operand 97 states and 102 transitions. Second operand 10 states. [2020-10-14 23:24:36,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:24:36,662 INFO L93 Difference]: Finished difference Result 127 states and 133 transitions. [2020-10-14 23:24:36,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 23:24:36,663 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 36 [2020-10-14 23:24:36,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:24:36,664 INFO L225 Difference]: With dead ends: 127 [2020-10-14 23:24:36,664 INFO L226 Difference]: Without dead ends: 99 [2020-10-14 23:24:36,665 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2020-10-14 23:24:36,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-10-14 23:24:36,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 97. [2020-10-14 23:24:36,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-14 23:24:36,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 101 transitions. [2020-10-14 23:24:36,680 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 101 transitions. Word has length 36 [2020-10-14 23:24:36,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:24:36,680 INFO L479 AbstractCegarLoop]: Abstraction has 97 states and 101 transitions. [2020-10-14 23:24:36,681 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 23:24:36,681 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 101 transitions. [2020-10-14 23:24:36,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-14 23:24:36,681 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:24:36,682 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] [2020-10-14 23:24:36,682 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 23:24:36,682 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:24:36,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:24:36,682 INFO L82 PathProgramCache]: Analyzing trace with hash 1847439967, now seen corresponding path program 1 times [2020-10-14 23:24:36,683 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:24:36,683 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [135915631] [2020-10-14 23:24:36,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:24:36,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:36,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:36,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:36,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:36,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:38,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:38,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-14 23:24:38,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 23:24:38,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1324 [2020-10-14 23:24:38,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:38,025 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:38,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 23:24:38,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:24:38,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-14 23:24:38,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:24:38,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:24:38,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:38,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:38,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:38,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:24:38,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:24:38,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:24:38,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:38,201 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:38,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:24:38,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:24:38,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:24:38,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:24:38,211 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-14 23:24:38,211 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [135915631] [2020-10-14 23:24:38,211 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:24:38,212 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 23:24:38,218 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121304523] [2020-10-14 23:24:38,220 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 23:24:38,221 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:24:38,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 23:24:38,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-14 23:24:38,221 INFO L87 Difference]: Start difference. First operand 97 states and 101 transitions. Second operand 9 states. [2020-10-14 23:24:38,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:24:38,525 INFO L93 Difference]: Finished difference Result 107 states and 111 transitions. [2020-10-14 23:24:38,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 23:24:38,525 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 38 [2020-10-14 23:24:38,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:24:38,526 INFO L225 Difference]: With dead ends: 107 [2020-10-14 23:24:38,526 INFO L226 Difference]: Without dead ends: 103 [2020-10-14 23:24:38,527 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-10-14 23:24:38,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-10-14 23:24:38,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 101. [2020-10-14 23:24:38,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-14 23:24:38,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 105 transitions. [2020-10-14 23:24:38,535 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 105 transitions. Word has length 38 [2020-10-14 23:24:38,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:24:38,535 INFO L479 AbstractCegarLoop]: Abstraction has 101 states and 105 transitions. [2020-10-14 23:24:38,535 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 23:24:38,535 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 105 transitions. [2020-10-14 23:24:38,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-14 23:24:38,536 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:24:38,536 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-10-14 23:24:38,536 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 23:24:38,537 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:24:38,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:24:38,537 INFO L82 PathProgramCache]: Analyzing trace with hash 1615087610, now seen corresponding path program 2 times [2020-10-14 23:24:38,537 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:24:38,537 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1506260695] [2020-10-14 23:24:38,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:24:38,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:38,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:38,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:38,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:38,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:39,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:39,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:42,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:42,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-14 23:24:42,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 23:24:42,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3794 [2020-10-14 23:24:42,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:42,345 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:42,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 23:24:42,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:24:42,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-14 23:24:42,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:24:42,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:24:42,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:42,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:42,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:42,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:24:42,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:24:42,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 23:24:42,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:42,513 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:42,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:24:42,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:24:42,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:24:42,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:24:42,524 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-14 23:24:42,524 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1506260695] [2020-10-14 23:24:42,525 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:24:42,525 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 23:24:42,525 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293641801] [2020-10-14 23:24:42,526 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 23:24:42,526 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:24:42,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 23:24:42,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-14 23:24:42,527 INFO L87 Difference]: Start difference. First operand 101 states and 105 transitions. Second operand 9 states. [2020-10-14 23:24:42,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:24:42,806 INFO L93 Difference]: Finished difference Result 109 states and 113 transitions. [2020-10-14 23:24:42,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 23:24:42,806 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 40 [2020-10-14 23:24:42,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:24:42,807 INFO L225 Difference]: With dead ends: 109 [2020-10-14 23:24:42,807 INFO L226 Difference]: Without dead ends: 80 [2020-10-14 23:24:42,808 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2020-10-14 23:24:42,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-14 23:24:42,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2020-10-14 23:24:42,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-10-14 23:24:42,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 83 transitions. [2020-10-14 23:24:42,816 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 83 transitions. Word has length 40 [2020-10-14 23:24:42,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:24:42,816 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 83 transitions. [2020-10-14 23:24:42,816 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 23:24:42,816 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 83 transitions. [2020-10-14 23:24:42,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-14 23:24:42,817 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:24:42,817 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:24:42,817 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-14 23:24:42,817 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:24:42,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:24:42,817 INFO L82 PathProgramCache]: Analyzing trace with hash 439169867, now seen corresponding path program 2 times [2020-10-14 23:24:42,818 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:24:42,818 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [190611055] [2020-10-14 23:24:42,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:24:42,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:42,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:43,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:43,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-14 23:24:43,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:24:43,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 215 [2020-10-14 23:24:43,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:43,059 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:43,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 23:24:43,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:24:43,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-14 23:24:43,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:24:43,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:24:43,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:43,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:43,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:43,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:24:43,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:24:43,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:24:43,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:43,263 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:43,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:24:43,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:24:43,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:24:43,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:24:43,285 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:24:43,285 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [190611055] [2020-10-14 23:24:43,285 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:24:43,285 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 23:24:43,286 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117955036] [2020-10-14 23:24:43,286 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 23:24:43,286 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:24:43,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 23:24:43,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-10-14 23:24:43,287 INFO L87 Difference]: Start difference. First operand 80 states and 83 transitions. Second operand 11 states. [2020-10-14 23:24:43,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:24:43,609 INFO L93 Difference]: Finished difference Result 88 states and 91 transitions. [2020-10-14 23:24:43,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 23:24:43,610 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 40 [2020-10-14 23:24:43,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:24:43,610 INFO L225 Difference]: With dead ends: 88 [2020-10-14 23:24:43,611 INFO L226 Difference]: Without dead ends: 86 [2020-10-14 23:24:43,611 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-10-14 23:24:43,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-10-14 23:24:43,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 84. [2020-10-14 23:24:43,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-10-14 23:24:43,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 87 transitions. [2020-10-14 23:24:43,617 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 87 transitions. Word has length 40 [2020-10-14 23:24:43,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:24:43,618 INFO L479 AbstractCegarLoop]: Abstraction has 84 states and 87 transitions. [2020-10-14 23:24:43,618 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 23:24:43,618 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 87 transitions. [2020-10-14 23:24:43,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-14 23:24:43,619 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:24:43,619 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:24:43,619 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-14 23:24:43,619 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:24:43,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:24:43,619 INFO L82 PathProgramCache]: Analyzing trace with hash 1838611532, now seen corresponding path program 4 times [2020-10-14 23:24:43,619 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:24:43,620 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1225166479] [2020-10-14 23:24:43,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:24:43,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:43,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:43,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:43,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:43,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-14 23:24:43,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:24:43,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 327 [2020-10-14 23:24:43,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:43,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:43,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 23:24:43,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:24:43,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-14 23:24:43,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:24:44,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:24:44,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:44,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:44,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:44,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:24:44,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:24:44,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:24:44,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:44,184 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:44,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:24:44,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:24:44,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:24:44,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:24:44,194 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:24:44,195 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1225166479] [2020-10-14 23:24:44,195 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:24:44,195 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 23:24:44,195 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732152615] [2020-10-14 23:24:44,196 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 23:24:44,196 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:24:44,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 23:24:44,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-10-14 23:24:44,196 INFO L87 Difference]: Start difference. First operand 84 states and 87 transitions. Second operand 11 states. [2020-10-14 23:24:44,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:24:44,678 INFO L93 Difference]: Finished difference Result 131 states and 136 transitions. [2020-10-14 23:24:44,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 23:24:44,679 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 40 [2020-10-14 23:24:44,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:24:44,680 INFO L225 Difference]: With dead ends: 131 [2020-10-14 23:24:44,680 INFO L226 Difference]: Without dead ends: 111 [2020-10-14 23:24:44,681 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2020-10-14 23:24:44,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-10-14 23:24:44,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 105. [2020-10-14 23:24:44,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-10-14 23:24:44,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 109 transitions. [2020-10-14 23:24:44,689 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 109 transitions. Word has length 40 [2020-10-14 23:24:44,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:24:44,689 INFO L479 AbstractCegarLoop]: Abstraction has 105 states and 109 transitions. [2020-10-14 23:24:44,689 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 23:24:44,689 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 109 transitions. [2020-10-14 23:24:44,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-14 23:24:44,690 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:24:44,690 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:24:44,690 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-14 23:24:44,690 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:24:44,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:24:44,691 INFO L82 PathProgramCache]: Analyzing trace with hash 1838649268, now seen corresponding path program 5 times [2020-10-14 23:24:44,691 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:24:44,692 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [775031938] [2020-10-14 23:24:44,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:24:44,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:44,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:44,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:44,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-14 23:24:44,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:24:44,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 247 [2020-10-14 23:24:44,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:44,969 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:44,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 23:24:44,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:24:44,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-14 23:24:44,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:24:45,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:24:45,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:45,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:45,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:45,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:24:45,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:24:45,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:24:45,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:45,207 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:45,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:24:45,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:24:45,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:24:45,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:24:45,223 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:24:45,223 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [775031938] [2020-10-14 23:24:45,223 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:24:45,223 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 23:24:45,224 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734226594] [2020-10-14 23:24:45,224 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 23:24:45,224 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:24:45,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 23:24:45,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-10-14 23:24:45,225 INFO L87 Difference]: Start difference. First operand 105 states and 109 transitions. Second operand 11 states. [2020-10-14 23:24:45,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:24:45,751 INFO L93 Difference]: Finished difference Result 121 states and 126 transitions. [2020-10-14 23:24:45,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 23:24:45,753 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 40 [2020-10-14 23:24:45,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:24:45,755 INFO L225 Difference]: With dead ends: 121 [2020-10-14 23:24:45,755 INFO L226 Difference]: Without dead ends: 119 [2020-10-14 23:24:45,756 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2020-10-14 23:24:45,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-10-14 23:24:45,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 111. [2020-10-14 23:24:45,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-10-14 23:24:45,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 116 transitions. [2020-10-14 23:24:45,772 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 116 transitions. Word has length 40 [2020-10-14 23:24:45,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:24:45,772 INFO L479 AbstractCegarLoop]: Abstraction has 111 states and 116 transitions. [2020-10-14 23:24:45,773 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 23:24:45,773 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 116 transitions. [2020-10-14 23:24:45,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-14 23:24:45,774 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:24:45,774 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:24:45,774 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-14 23:24:45,774 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:24:45,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:24:45,775 INFO L82 PathProgramCache]: Analyzing trace with hash -256362507, now seen corresponding path program 5 times [2020-10-14 23:24:45,775 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:24:45,783 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [961905137] [2020-10-14 23:24:45,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:24:45,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:45,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:45,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:46,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:46,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-14 23:24:46,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:24:46,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 444 [2020-10-14 23:24:46,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:46,254 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:46,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 23:24:46,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:24:46,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-14 23:24:46,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:24:46,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:24:46,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:46,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:46,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:46,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:24:46,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:24:46,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:24:46,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:46,493 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:46,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:24:46,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:24:46,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:24:46,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:24:46,506 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 4 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:24:46,506 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [961905137] [2020-10-14 23:24:46,506 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:24:46,506 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 23:24:46,506 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711873930] [2020-10-14 23:24:46,507 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 23:24:46,507 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:24:46,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 23:24:46,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-10-14 23:24:46,508 INFO L87 Difference]: Start difference. First operand 111 states and 116 transitions. Second operand 12 states. [2020-10-14 23:24:47,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:24:47,009 INFO L93 Difference]: Finished difference Result 133 states and 138 transitions. [2020-10-14 23:24:47,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 23:24:47,010 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 44 [2020-10-14 23:24:47,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:24:47,011 INFO L225 Difference]: With dead ends: 133 [2020-10-14 23:24:47,011 INFO L226 Difference]: Without dead ends: 113 [2020-10-14 23:24:47,012 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2020-10-14 23:24:47,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-10-14 23:24:47,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 90. [2020-10-14 23:24:47,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-10-14 23:24:47,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 93 transitions. [2020-10-14 23:24:47,018 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 93 transitions. Word has length 44 [2020-10-14 23:24:47,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:24:47,019 INFO L479 AbstractCegarLoop]: Abstraction has 90 states and 93 transitions. [2020-10-14 23:24:47,019 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 23:24:47,019 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 93 transitions. [2020-10-14 23:24:47,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-14 23:24:47,019 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:24:47,020 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:24:47,020 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-14 23:24:47,020 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:24:47,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:24:47,020 INFO L82 PathProgramCache]: Analyzing trace with hash 210509115, now seen corresponding path program 6 times [2020-10-14 23:24:47,020 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:24:47,021 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [403358390] [2020-10-14 23:24:47,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:24:47,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:47,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:47,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:47,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:47,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-14 23:24:47,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:24:47,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 422 [2020-10-14 23:24:47,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:47,456 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:47,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 23:24:47,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:24:47,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-14 23:24:47,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:24:47,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:24:47,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:47,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:47,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:47,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:24:47,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:24:47,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:24:47,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:47,674 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:47,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:24:47,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:24:47,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:24:47,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:24:47,691 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:24:47,691 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [403358390] [2020-10-14 23:24:47,692 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:24:47,692 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 23:24:47,692 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660549597] [2020-10-14 23:24:47,692 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 23:24:47,693 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:24:47,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 23:24:47,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-10-14 23:24:47,693 INFO L87 Difference]: Start difference. First operand 90 states and 93 transitions. Second operand 12 states. [2020-10-14 23:24:48,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:24:48,202 INFO L93 Difference]: Finished difference Result 129 states and 134 transitions. [2020-10-14 23:24:48,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 23:24:48,202 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 46 [2020-10-14 23:24:48,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:24:48,204 INFO L225 Difference]: With dead ends: 129 [2020-10-14 23:24:48,204 INFO L226 Difference]: Without dead ends: 127 [2020-10-14 23:24:48,205 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2020-10-14 23:24:48,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-10-14 23:24:48,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 119. [2020-10-14 23:24:48,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-10-14 23:24:48,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 124 transitions. [2020-10-14 23:24:48,214 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 124 transitions. Word has length 46 [2020-10-14 23:24:48,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:24:48,214 INFO L479 AbstractCegarLoop]: Abstraction has 119 states and 124 transitions. [2020-10-14 23:24:48,214 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 23:24:48,214 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 124 transitions. [2020-10-14 23:24:48,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-14 23:24:48,215 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:24:48,215 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:24:48,215 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-14 23:24:48,216 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:24:48,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:24:48,216 INFO L82 PathProgramCache]: Analyzing trace with hash 210546851, now seen corresponding path program 6 times [2020-10-14 23:24:48,216 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:24:48,216 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1034394382] [2020-10-14 23:24:48,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:24:48,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:48,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:48,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:48,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-14 23:24:48,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:24:48,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 300 [2020-10-14 23:24:48,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:48,552 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:48,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 23:24:48,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:24:48,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-14 23:24:48,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:24:48,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:24:48,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:48,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:48,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:48,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:24:48,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:24:48,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:24:48,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:48,786 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:48,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:24:48,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:24:48,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:24:48,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:24:48,802 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 6 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:24:48,803 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1034394382] [2020-10-14 23:24:48,803 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:24:48,803 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 23:24:48,803 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966664719] [2020-10-14 23:24:48,804 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 23:24:48,804 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:24:48,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 23:24:48,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-10-14 23:24:48,804 INFO L87 Difference]: Start difference. First operand 119 states and 124 transitions. Second operand 12 states. [2020-10-14 23:24:49,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:24:49,278 INFO L93 Difference]: Finished difference Result 149 states and 155 transitions. [2020-10-14 23:24:49,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 23:24:49,281 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 46 [2020-10-14 23:24:49,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:24:49,283 INFO L225 Difference]: With dead ends: 149 [2020-10-14 23:24:49,283 INFO L226 Difference]: Without dead ends: 121 [2020-10-14 23:24:49,283 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2020-10-14 23:24:49,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2020-10-14 23:24:49,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 119. [2020-10-14 23:24:49,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-10-14 23:24:49,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 123 transitions. [2020-10-14 23:24:49,291 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 123 transitions. Word has length 46 [2020-10-14 23:24:49,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:24:49,292 INFO L479 AbstractCegarLoop]: Abstraction has 119 states and 123 transitions. [2020-10-14 23:24:49,292 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 23:24:49,292 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 123 transitions. [2020-10-14 23:24:49,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-14 23:24:49,292 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:24:49,293 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:24:49,293 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-14 23:24:49,293 INFO L427 AbstractCegarLoop]: === Iteration 26 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:24:49,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:24:49,293 INFO L82 PathProgramCache]: Analyzing trace with hash -723015497, now seen corresponding path program 3 times [2020-10-14 23:24:49,293 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:24:49,294 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2070949428] [2020-10-14 23:24:49,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:24:49,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:49,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:49,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:49,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:49,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:50,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:50,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-14 23:24:50,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 23:24:50,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1508 [2020-10-14 23:24:50,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:50,814 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:50,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 23:24:50,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:24:50,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-14 23:24:50,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:24:50,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:24:50,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:50,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:50,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:50,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:24:50,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:24:50,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:24:50,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:50,963 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:50,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:24:50,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:24:50,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:24:50,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:24:50,973 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-14 23:24:50,974 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2070949428] [2020-10-14 23:24:50,974 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:24:50,974 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 23:24:50,974 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065815245] [2020-10-14 23:24:50,974 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 23:24:50,974 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:24:50,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 23:24:50,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-14 23:24:50,975 INFO L87 Difference]: Start difference. First operand 119 states and 123 transitions. Second operand 10 states. [2020-10-14 23:24:51,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:24:51,322 INFO L93 Difference]: Finished difference Result 125 states and 129 transitions. [2020-10-14 23:24:51,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 23:24:51,322 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 48 [2020-10-14 23:24:51,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:24:51,323 INFO L225 Difference]: With dead ends: 125 [2020-10-14 23:24:51,323 INFO L226 Difference]: Without dead ends: 121 [2020-10-14 23:24:51,324 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2020-10-14 23:24:51,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2020-10-14 23:24:51,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2020-10-14 23:24:51,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-10-14 23:24:51,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 125 transitions. [2020-10-14 23:24:51,344 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 125 transitions. Word has length 48 [2020-10-14 23:24:51,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:24:51,344 INFO L479 AbstractCegarLoop]: Abstraction has 121 states and 125 transitions. [2020-10-14 23:24:51,344 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 23:24:51,344 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 125 transitions. [2020-10-14 23:24:51,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-14 23:24:51,345 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:24:51,345 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:24:51,345 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-14 23:24:51,345 INFO L427 AbstractCegarLoop]: === Iteration 27 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:24:51,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:24:51,345 INFO L82 PathProgramCache]: Analyzing trace with hash 1013581906, now seen corresponding path program 4 times [2020-10-14 23:24:51,346 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:24:51,346 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [512949280] [2020-10-14 23:24:51,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:24:51,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:51,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:51,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:51,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:51,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:53,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:53,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-14 23:24:53,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 23:24:53,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1806 [2020-10-14 23:24:53,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:53,171 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:53,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 23:24:53,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:24:53,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-14 23:24:53,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:24:53,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:24:53,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:53,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:53,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:53,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:24:53,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:24:53,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:24:53,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:53,397 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:53,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:24:53,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:24:53,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:24:53,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:24:53,418 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-14 23:24:53,419 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [512949280] [2020-10-14 23:24:53,419 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:24:53,419 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 23:24:53,419 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464640572] [2020-10-14 23:24:53,419 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 23:24:53,420 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:24:53,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 23:24:53,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-10-14 23:24:53,420 INFO L87 Difference]: Start difference. First operand 121 states and 125 transitions. Second operand 11 states. [2020-10-14 23:24:53,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:24:53,849 INFO L93 Difference]: Finished difference Result 133 states and 137 transitions. [2020-10-14 23:24:53,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 23:24:53,849 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 50 [2020-10-14 23:24:53,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:24:53,851 INFO L225 Difference]: With dead ends: 133 [2020-10-14 23:24:53,851 INFO L226 Difference]: Without dead ends: 129 [2020-10-14 23:24:53,851 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2020-10-14 23:24:53,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2020-10-14 23:24:53,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 125. [2020-10-14 23:24:53,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-10-14 23:24:53,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 129 transitions. [2020-10-14 23:24:53,879 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 129 transitions. Word has length 50 [2020-10-14 23:24:53,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:24:53,879 INFO L479 AbstractCegarLoop]: Abstraction has 125 states and 129 transitions. [2020-10-14 23:24:53,879 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 23:24:53,880 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 129 transitions. [2020-10-14 23:24:53,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-14 23:24:53,885 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:24:53,886 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:24:53,886 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-14 23:24:53,886 INFO L427 AbstractCegarLoop]: === Iteration 28 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:24:53,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:24:53,887 INFO L82 PathProgramCache]: Analyzing trace with hash -1982103453, now seen corresponding path program 3 times [2020-10-14 23:24:53,887 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:24:53,887 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [770936909] [2020-10-14 23:24:53,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:24:53,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:53,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:54,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:54,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-14 23:24:54,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:24:54,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 497 [2020-10-14 23:24:54,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:54,451 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:54,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 23:24:54,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:24:54,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-14 23:24:54,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:24:54,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:24:54,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:54,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:54,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:54,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:24:54,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:24:54,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:24:54,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:54,805 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:54,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:24:54,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:24:54,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:24:54,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:24:54,820 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:24:54,820 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [770936909] [2020-10-14 23:24:54,821 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:24:54,821 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 23:24:54,821 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348688800] [2020-10-14 23:24:54,821 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 23:24:54,821 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:24:54,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 23:24:54,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-10-14 23:24:54,822 INFO L87 Difference]: Start difference. First operand 125 states and 129 transitions. Second operand 13 states. [2020-10-14 23:24:55,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:24:55,337 INFO L93 Difference]: Finished difference Result 133 states and 137 transitions. [2020-10-14 23:24:55,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 23:24:55,338 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 50 [2020-10-14 23:24:55,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:24:55,339 INFO L225 Difference]: With dead ends: 133 [2020-10-14 23:24:55,339 INFO L226 Difference]: Without dead ends: 131 [2020-10-14 23:24:55,339 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2020-10-14 23:24:55,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-10-14 23:24:55,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 129. [2020-10-14 23:24:55,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-10-14 23:24:55,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 133 transitions. [2020-10-14 23:24:55,349 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 133 transitions. Word has length 50 [2020-10-14 23:24:55,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:24:55,349 INFO L479 AbstractCegarLoop]: Abstraction has 129 states and 133 transitions. [2020-10-14 23:24:55,349 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 23:24:55,349 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 133 transitions. [2020-10-14 23:24:55,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-14 23:24:55,350 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:24:55,350 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:24:55,350 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-14 23:24:55,350 INFO L427 AbstractCegarLoop]: === Iteration 29 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:24:55,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:24:55,351 INFO L82 PathProgramCache]: Analyzing trace with hash -292407772, now seen corresponding path program 7 times [2020-10-14 23:24:55,351 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:24:55,351 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1941337000] [2020-10-14 23:24:55,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:24:55,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:55,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:55,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:56,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:56,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-14 23:24:56,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:24:56,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 651 [2020-10-14 23:24:56,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:56,017 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:56,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 23:24:56,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:24:56,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-14 23:24:56,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:24:56,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:24:56,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:56,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:56,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:56,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:24:56,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:24:56,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:24:56,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:56,401 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:56,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:24:56,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:24:56,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:24:56,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:24:56,427 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:24:56,428 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1941337000] [2020-10-14 23:24:56,428 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:24:56,428 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 23:24:56,428 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501278067] [2020-10-14 23:24:56,429 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 23:24:56,429 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:24:56,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 23:24:56,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2020-10-14 23:24:56,430 INFO L87 Difference]: Start difference. First operand 129 states and 133 transitions. Second operand 13 states. [2020-10-14 23:24:57,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:24:57,181 INFO L93 Difference]: Finished difference Result 161 states and 166 transitions. [2020-10-14 23:24:57,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 23:24:57,181 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 50 [2020-10-14 23:24:57,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:24:57,183 INFO L225 Difference]: With dead ends: 161 [2020-10-14 23:24:57,183 INFO L226 Difference]: Without dead ends: 139 [2020-10-14 23:24:57,184 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=294, Unknown=0, NotChecked=0, Total=342 [2020-10-14 23:24:57,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-10-14 23:24:57,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 133. [2020-10-14 23:24:57,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-10-14 23:24:57,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 137 transitions. [2020-10-14 23:24:57,194 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 137 transitions. Word has length 50 [2020-10-14 23:24:57,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:24:57,194 INFO L479 AbstractCegarLoop]: Abstraction has 133 states and 137 transitions. [2020-10-14 23:24:57,194 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 23:24:57,194 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 137 transitions. [2020-10-14 23:24:57,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-14 23:24:57,195 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:24:57,195 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:24:57,195 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-14 23:24:57,196 INFO L427 AbstractCegarLoop]: === Iteration 30 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:24:57,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:24:57,196 INFO L82 PathProgramCache]: Analyzing trace with hash -292370036, now seen corresponding path program 7 times [2020-10-14 23:24:57,196 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:24:57,196 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [155499803] [2020-10-14 23:24:57,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:24:57,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:57,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:57,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:57,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-14 23:24:57,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:24:57,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 346 [2020-10-14 23:24:57,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:57,571 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:57,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 23:24:57,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:24:57,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-14 23:24:57,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:24:57,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:24:57,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:57,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:57,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:57,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:24:57,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:24:57,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:24:57,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:57,898 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:57,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:24:57,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:24:57,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:24:57,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:24:57,914 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:24:57,915 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [155499803] [2020-10-14 23:24:57,915 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:24:57,915 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 23:24:57,915 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227827253] [2020-10-14 23:24:57,915 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 23:24:57,916 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:24:57,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 23:24:57,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2020-10-14 23:24:57,916 INFO L87 Difference]: Start difference. First operand 133 states and 137 transitions. Second operand 13 states. [2020-10-14 23:24:58,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:24:58,699 INFO L93 Difference]: Finished difference Result 139 states and 143 transitions. [2020-10-14 23:24:58,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 23:24:58,700 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 50 [2020-10-14 23:24:58,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:24:58,701 INFO L225 Difference]: With dead ends: 139 [2020-10-14 23:24:58,701 INFO L226 Difference]: Without dead ends: 137 [2020-10-14 23:24:58,702 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2020-10-14 23:24:58,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2020-10-14 23:24:58,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 135. [2020-10-14 23:24:58,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-10-14 23:24:58,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 139 transitions. [2020-10-14 23:24:58,716 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 139 transitions. Word has length 50 [2020-10-14 23:24:58,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:24:58,717 INFO L479 AbstractCegarLoop]: Abstraction has 135 states and 139 transitions. [2020-10-14 23:24:58,717 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 23:24:58,717 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 139 transitions. [2020-10-14 23:24:58,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-14 23:24:58,717 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:24:58,718 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:24:58,718 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-14 23:24:58,718 INFO L427 AbstractCegarLoop]: === Iteration 31 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:24:58,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:24:58,718 INFO L82 PathProgramCache]: Analyzing trace with hash -858591955, now seen corresponding path program 5 times [2020-10-14 23:24:58,718 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:24:58,719 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1501364238] [2020-10-14 23:24:58,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:24:58,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:58,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:58,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:58,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:58,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:00,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:00,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:03,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:03,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-14 23:25:03,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 23:25:03,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 23:25:03,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:03,730 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:03,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 23:25:03,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:25:03,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-14 23:25:03,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:04,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:25:04,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:04,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:04,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:04,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:25:04,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:04,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:25:04,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:04,075 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:04,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:25:04,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:25:04,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:25:04,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:04,099 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 14 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-14 23:25:04,099 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1501364238] [2020-10-14 23:25:04,099 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:25:04,099 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 23:25:04,100 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660287185] [2020-10-14 23:25:04,100 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 23:25:04,100 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:25:04,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 23:25:04,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-10-14 23:25:04,101 INFO L87 Difference]: Start difference. First operand 135 states and 139 transitions. Second operand 11 states. [2020-10-14 23:25:04,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:25:04,589 INFO L93 Difference]: Finished difference Result 145 states and 149 transitions. [2020-10-14 23:25:04,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 23:25:04,590 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 52 [2020-10-14 23:25:04,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:25:04,592 INFO L225 Difference]: With dead ends: 145 [2020-10-14 23:25:04,592 INFO L226 Difference]: Without dead ends: 108 [2020-10-14 23:25:04,593 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2020-10-14 23:25:04,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-10-14 23:25:04,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2020-10-14 23:25:04,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-10-14 23:25:04,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 111 transitions. [2020-10-14 23:25:04,610 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 111 transitions. Word has length 52 [2020-10-14 23:25:04,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:25:04,614 INFO L479 AbstractCegarLoop]: Abstraction has 108 states and 111 transitions. [2020-10-14 23:25:04,614 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 23:25:04,614 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 111 transitions. [2020-10-14 23:25:04,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-14 23:25:04,615 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:25:04,615 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:25:04,616 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-14 23:25:04,616 INFO L427 AbstractCegarLoop]: === Iteration 32 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:25:04,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:25:04,617 INFO L82 PathProgramCache]: Analyzing trace with hash -1967483629, now seen corresponding path program 8 times [2020-10-14 23:25:04,617 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:25:04,617 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1296410825] [2020-10-14 23:25:04,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:25:04,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:04,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:04,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:05,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:05,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-14 23:25:05,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:25:05,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1016 [2020-10-14 23:25:05,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:05,654 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:05,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 23:25:05,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:25:05,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-14 23:25:05,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:06,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:25:06,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:06,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:06,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:06,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:25:06,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:06,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:25:06,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:06,155 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:06,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:25:06,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:25:06,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:25:06,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:25:06,213 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:25:06,214 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1296410825] [2020-10-14 23:25:06,214 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:25:06,215 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 23:25:06,215 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084333589] [2020-10-14 23:25:06,216 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 23:25:06,216 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:25:06,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 23:25:06,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2020-10-14 23:25:06,217 INFO L87 Difference]: Start difference. First operand 108 states and 111 transitions. Second operand 14 states. [2020-10-14 23:25:07,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:25:07,255 INFO L93 Difference]: Finished difference Result 153 states and 158 transitions. [2020-10-14 23:25:07,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 23:25:07,255 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 56 [2020-10-14 23:25:07,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:25:07,256 INFO L225 Difference]: With dead ends: 153 [2020-10-14 23:25:07,257 INFO L226 Difference]: Without dead ends: 151 [2020-10-14 23:25:07,257 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2020-10-14 23:25:07,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2020-10-14 23:25:07,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 143. [2020-10-14 23:25:07,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-10-14 23:25:07,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 148 transitions. [2020-10-14 23:25:07,270 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 148 transitions. Word has length 56 [2020-10-14 23:25:07,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:25:07,270 INFO L479 AbstractCegarLoop]: Abstraction has 143 states and 148 transitions. [2020-10-14 23:25:07,270 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 23:25:07,270 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 148 transitions. [2020-10-14 23:25:07,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-14 23:25:07,271 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:25:07,271 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:25:07,272 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-14 23:25:07,272 INFO L427 AbstractCegarLoop]: === Iteration 33 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:25:07,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:25:07,272 INFO L82 PathProgramCache]: Analyzing trace with hash -1967445893, now seen corresponding path program 8 times [2020-10-14 23:25:07,272 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:25:07,272 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1773084536] [2020-10-14 23:25:07,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:25:07,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:07,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:08,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:08,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-14 23:25:08,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:08,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 690 [2020-10-14 23:25:08,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:08,026 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:08,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 23:25:08,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:25:08,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-14 23:25:08,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:08,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:25:08,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:08,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:08,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:08,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:25:08,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:08,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:25:08,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:08,520 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:08,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:25:08,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:25:08,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:25:08,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:08,541 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 8 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:25:08,542 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1773084536] [2020-10-14 23:25:08,542 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:25:08,542 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 23:25:08,542 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176778042] [2020-10-14 23:25:08,542 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 23:25:08,542 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:25:08,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 23:25:08,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2020-10-14 23:25:08,543 INFO L87 Difference]: Start difference. First operand 143 states and 148 transitions. Second operand 14 states. [2020-10-14 23:25:09,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:25:09,168 INFO L93 Difference]: Finished difference Result 175 states and 181 transitions. [2020-10-14 23:25:09,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 23:25:09,169 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 56 [2020-10-14 23:25:09,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:25:09,171 INFO L225 Difference]: With dead ends: 175 [2020-10-14 23:25:09,171 INFO L226 Difference]: Without dead ends: 145 [2020-10-14 23:25:09,172 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2020-10-14 23:25:09,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-10-14 23:25:09,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 143. [2020-10-14 23:25:09,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-10-14 23:25:09,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 147 transitions. [2020-10-14 23:25:09,187 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 147 transitions. Word has length 56 [2020-10-14 23:25:09,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:25:09,187 INFO L479 AbstractCegarLoop]: Abstraction has 143 states and 147 transitions. [2020-10-14 23:25:09,187 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 23:25:09,187 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 147 transitions. [2020-10-14 23:25:09,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-14 23:25:09,188 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:25:09,188 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:25:09,189 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-14 23:25:09,189 INFO L427 AbstractCegarLoop]: === Iteration 34 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:25:09,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:25:09,189 INFO L82 PathProgramCache]: Analyzing trace with hash 701290346, now seen corresponding path program 6 times [2020-10-14 23:25:09,189 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:25:09,189 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1214284612] [2020-10-14 23:25:09,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:25:09,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:09,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:09,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:09,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:09,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:11,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:11,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-14 23:25:11,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 23:25:11,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2724 [2020-10-14 23:25:11,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:11,927 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:11,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 23:25:11,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:25:11,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-14 23:25:11,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:12,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:25:12,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:12,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:12,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:12,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:25:12,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:12,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:25:12,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:12,159 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:12,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:25:12,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:25:12,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:25:12,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:25:12,195 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-14 23:25:12,196 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1214284612] [2020-10-14 23:25:12,196 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:25:12,196 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 23:25:12,196 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507775023] [2020-10-14 23:25:12,197 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 23:25:12,202 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:25:12,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 23:25:12,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-10-14 23:25:12,203 INFO L87 Difference]: Start difference. First operand 143 states and 147 transitions. Second operand 12 states. [2020-10-14 23:25:12,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:25:12,772 INFO L93 Difference]: Finished difference Result 149 states and 153 transitions. [2020-10-14 23:25:12,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 23:25:12,773 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 60 [2020-10-14 23:25:12,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:25:12,774 INFO L225 Difference]: With dead ends: 149 [2020-10-14 23:25:12,774 INFO L226 Difference]: Without dead ends: 145 [2020-10-14 23:25:12,775 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=61, Invalid=319, Unknown=0, NotChecked=0, Total=380 [2020-10-14 23:25:12,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-10-14 23:25:12,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2020-10-14 23:25:12,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-10-14 23:25:12,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 149 transitions. [2020-10-14 23:25:12,785 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 149 transitions. Word has length 60 [2020-10-14 23:25:12,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:25:12,785 INFO L479 AbstractCegarLoop]: Abstraction has 145 states and 149 transitions. [2020-10-14 23:25:12,785 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 23:25:12,785 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 149 transitions. [2020-10-14 23:25:12,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-14 23:25:12,786 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:25:12,786 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:25:12,787 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-14 23:25:12,787 INFO L427 AbstractCegarLoop]: === Iteration 35 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:25:12,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:25:12,787 INFO L82 PathProgramCache]: Analyzing trace with hash -640005061, now seen corresponding path program 4 times [2020-10-14 23:25:12,787 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:25:12,787 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [58131542] [2020-10-14 23:25:12,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:25:12,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:12,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:13,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:13,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-14 23:25:13,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:13,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 669 [2020-10-14 23:25:13,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:13,501 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:13,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 23:25:13,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:25:13,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-14 23:25:13,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:13,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:25:13,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:13,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:13,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:13,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:25:13,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:13,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:25:13,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:13,998 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:13,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:25:13,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:25:13,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:25:13,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:14,025 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:25:14,025 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [58131542] [2020-10-14 23:25:14,025 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:25:14,026 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 23:25:14,026 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091320075] [2020-10-14 23:25:14,026 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 23:25:14,026 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:25:14,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 23:25:14,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2020-10-14 23:25:14,027 INFO L87 Difference]: Start difference. First operand 145 states and 149 transitions. Second operand 15 states. [2020-10-14 23:25:14,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:25:14,731 INFO L93 Difference]: Finished difference Result 153 states and 157 transitions. [2020-10-14 23:25:14,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 23:25:14,731 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 60 [2020-10-14 23:25:14,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:25:14,733 INFO L225 Difference]: With dead ends: 153 [2020-10-14 23:25:14,733 INFO L226 Difference]: Without dead ends: 151 [2020-10-14 23:25:14,734 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2020-10-14 23:25:14,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2020-10-14 23:25:14,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 123. [2020-10-14 23:25:14,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-10-14 23:25:14,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 127 transitions. [2020-10-14 23:25:14,744 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 127 transitions. Word has length 60 [2020-10-14 23:25:14,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:25:14,744 INFO L479 AbstractCegarLoop]: Abstraction has 123 states and 127 transitions. [2020-10-14 23:25:14,744 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 23:25:14,744 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 127 transitions. [2020-10-14 23:25:14,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-14 23:25:14,745 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:25:14,745 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:25:14,745 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-14 23:25:14,745 INFO L427 AbstractCegarLoop]: === Iteration 36 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:25:14,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:25:14,746 INFO L82 PathProgramCache]: Analyzing trace with hash 304701116, now seen corresponding path program 9 times [2020-10-14 23:25:14,746 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:25:14,746 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1069512470] [2020-10-14 23:25:14,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:25:14,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:14,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:14,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:15,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:15,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-14 23:25:15,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:25:15,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 606 [2020-10-14 23:25:15,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:15,366 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:15,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 23:25:15,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:25:15,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-14 23:25:15,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:15,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:25:15,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:15,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:15,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:15,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:25:15,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:15,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:25:15,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:15,936 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:15,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:25:15,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:25:15,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:25:15,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:15,963 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:25:15,963 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1069512470] [2020-10-14 23:25:15,964 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:25:15,964 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 23:25:15,964 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948118722] [2020-10-14 23:25:15,964 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 23:25:15,964 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:25:15,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 23:25:15,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2020-10-14 23:25:15,965 INFO L87 Difference]: Start difference. First operand 123 states and 127 transitions. Second operand 15 states. [2020-10-14 23:25:16,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:25:16,927 INFO L93 Difference]: Finished difference Result 214 states and 220 transitions. [2020-10-14 23:25:16,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 23:25:16,928 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 60 [2020-10-14 23:25:16,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:25:16,929 INFO L225 Difference]: With dead ends: 214 [2020-10-14 23:25:16,930 INFO L226 Difference]: Without dead ends: 190 [2020-10-14 23:25:16,930 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=52, Invalid=368, Unknown=0, NotChecked=0, Total=420 [2020-10-14 23:25:16,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2020-10-14 23:25:16,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 156. [2020-10-14 23:25:16,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2020-10-14 23:25:16,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 161 transitions. [2020-10-14 23:25:16,942 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 161 transitions. Word has length 60 [2020-10-14 23:25:16,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:25:16,942 INFO L479 AbstractCegarLoop]: Abstraction has 156 states and 161 transitions. [2020-10-14 23:25:16,942 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 23:25:16,942 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 161 transitions. [2020-10-14 23:25:16,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-14 23:25:16,943 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:25:16,943 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:25:16,943 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-14 23:25:16,944 INFO L427 AbstractCegarLoop]: === Iteration 37 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:25:16,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:25:16,944 INFO L82 PathProgramCache]: Analyzing trace with hash 304738852, now seen corresponding path program 9 times [2020-10-14 23:25:16,944 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:25:16,944 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [948194335] [2020-10-14 23:25:16,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:25:16,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:17,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:17,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:17,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-14 23:25:17,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:17,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 724 [2020-10-14 23:25:17,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:17,706 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:17,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 23:25:17,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:25:17,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-14 23:25:17,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:18,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:25:18,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:18,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:18,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:18,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:25:18,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:18,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:25:18,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:18,239 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:18,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:25:18,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:25:18,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:25:18,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:18,267 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:25:18,268 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [948194335] [2020-10-14 23:25:18,268 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:25:18,268 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 23:25:18,268 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352298566] [2020-10-14 23:25:18,268 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 23:25:18,269 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:25:18,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 23:25:18,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2020-10-14 23:25:18,269 INFO L87 Difference]: Start difference. First operand 156 states and 161 transitions. Second operand 15 states. [2020-10-14 23:25:19,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:25:19,316 INFO L93 Difference]: Finished difference Result 178 states and 184 transitions. [2020-10-14 23:25:19,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 23:25:19,316 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 60 [2020-10-14 23:25:19,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:25:19,318 INFO L225 Difference]: With dead ends: 178 [2020-10-14 23:25:19,318 INFO L226 Difference]: Without dead ends: 176 [2020-10-14 23:25:19,319 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=52, Invalid=368, Unknown=0, NotChecked=0, Total=420 [2020-10-14 23:25:19,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2020-10-14 23:25:19,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 162. [2020-10-14 23:25:19,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-10-14 23:25:19,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 168 transitions. [2020-10-14 23:25:19,331 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 168 transitions. Word has length 60 [2020-10-14 23:25:19,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:25:19,331 INFO L479 AbstractCegarLoop]: Abstraction has 162 states and 168 transitions. [2020-10-14 23:25:19,332 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 23:25:19,332 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 168 transitions. [2020-10-14 23:25:19,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-14 23:25:19,332 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:25:19,333 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:25:19,333 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-14 23:25:19,333 INFO L427 AbstractCegarLoop]: === Iteration 38 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:25:19,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:25:19,333 INFO L82 PathProgramCache]: Analyzing trace with hash -323070395, now seen corresponding path program 7 times [2020-10-14 23:25:19,334 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:25:19,334 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [366368809] [2020-10-14 23:25:19,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:25:19,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:19,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:19,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:19,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:19,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:22,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:22,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-14 23:25:22,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 23:25:22,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3215 [2020-10-14 23:25:22,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:22,563 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:22,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 23:25:22,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:25:22,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-14 23:25:22,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:22,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:25:22,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:22,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:22,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:22,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:25:22,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:22,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:25:22,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:22,877 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:22,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:25:22,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:25:22,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:25:22,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:22,900 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-14 23:25:22,901 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [366368809] [2020-10-14 23:25:22,901 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:25:22,901 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 23:25:22,901 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703487410] [2020-10-14 23:25:22,902 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 23:25:22,902 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:25:22,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 23:25:22,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-10-14 23:25:22,902 INFO L87 Difference]: Start difference. First operand 162 states and 168 transitions. Second operand 13 states. [2020-10-14 23:25:23,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:25:23,483 INFO L93 Difference]: Finished difference Result 202 states and 208 transitions. [2020-10-14 23:25:23,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 23:25:23,484 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 62 [2020-10-14 23:25:23,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:25:23,486 INFO L225 Difference]: With dead ends: 202 [2020-10-14 23:25:23,486 INFO L226 Difference]: Without dead ends: 198 [2020-10-14 23:25:23,486 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2020-10-14 23:25:23,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2020-10-14 23:25:23,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 192. [2020-10-14 23:25:23,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192 states. [2020-10-14 23:25:23,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 198 transitions. [2020-10-14 23:25:23,499 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 198 transitions. Word has length 62 [2020-10-14 23:25:23,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:25:23,500 INFO L479 AbstractCegarLoop]: Abstraction has 192 states and 198 transitions. [2020-10-14 23:25:23,500 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 23:25:23,500 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 198 transitions. [2020-10-14 23:25:23,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-14 23:25:23,501 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:25:23,501 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:25:23,501 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-14 23:25:23,501 INFO L427 AbstractCegarLoop]: === Iteration 39 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:25:23,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:25:23,502 INFO L82 PathProgramCache]: Analyzing trace with hash -1186231712, now seen corresponding path program 8 times [2020-10-14 23:25:23,502 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:25:23,502 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1597731472] [2020-10-14 23:25:23,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:25:23,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:23,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:23,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:23,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:24,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:24,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:24,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:28,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:28,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 23:25:28,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 23:25:28,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 23:25:28,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:28,520 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:28,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 23:25:28,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:25:28,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-14 23:25:28,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:28,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:25:28,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:28,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:28,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:28,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:25:28,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:28,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:25:28,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:28,828 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:28,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:25:28,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:25:28,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:25:28,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:28,852 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 8 proven. 30 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-14 23:25:28,852 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1597731472] [2020-10-14 23:25:28,852 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:25:28,852 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 23:25:28,853 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794837239] [2020-10-14 23:25:28,853 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 23:25:28,853 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:25:28,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 23:25:28,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-10-14 23:25:28,853 INFO L87 Difference]: Start difference. First operand 192 states and 198 transitions. Second operand 13 states. [2020-10-14 23:25:29,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:25:29,466 INFO L93 Difference]: Finished difference Result 204 states and 210 transitions. [2020-10-14 23:25:29,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 23:25:29,466 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 64 [2020-10-14 23:25:29,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:25:29,468 INFO L225 Difference]: With dead ends: 204 [2020-10-14 23:25:29,469 INFO L226 Difference]: Without dead ends: 159 [2020-10-14 23:25:29,469 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2020-10-14 23:25:29,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-10-14 23:25:29,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2020-10-14 23:25:29,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-10-14 23:25:29,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 164 transitions. [2020-10-14 23:25:29,480 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 164 transitions. Word has length 64 [2020-10-14 23:25:29,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:25:29,481 INFO L479 AbstractCegarLoop]: Abstraction has 159 states and 164 transitions. [2020-10-14 23:25:29,481 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 23:25:29,481 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 164 transitions. [2020-10-14 23:25:29,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-14 23:25:29,482 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:25:29,482 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:25:29,482 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-14 23:25:29,482 INFO L427 AbstractCegarLoop]: === Iteration 40 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:25:29,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:25:29,482 INFO L82 PathProgramCache]: Analyzing trace with hash 1280912357, now seen corresponding path program 10 times [2020-10-14 23:25:29,483 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:25:29,483 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [75692402] [2020-10-14 23:25:29,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:25:29,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:29,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:29,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:30,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:30,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 23:25:30,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:25:30,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 825 [2020-10-14 23:25:30,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:30,321 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:30,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 23:25:30,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:25:30,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-14 23:25:30,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:31,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:25:31,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:31,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:31,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:31,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:25:31,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:31,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:25:31,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:31,021 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:31,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:25:31,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:25:31,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:25:31,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:25:31,114 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 0 proven. 116 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:25:31,114 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [75692402] [2020-10-14 23:25:31,114 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:25:31,115 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-14 23:25:31,115 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594815486] [2020-10-14 23:25:31,115 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 23:25:31,116 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:25:31,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 23:25:31,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2020-10-14 23:25:31,117 INFO L87 Difference]: Start difference. First operand 159 states and 164 transitions. Second operand 16 states. [2020-10-14 23:25:32,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:25:32,505 INFO L93 Difference]: Finished difference Result 185 states and 190 transitions. [2020-10-14 23:25:32,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 23:25:32,505 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 64 [2020-10-14 23:25:32,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:25:32,507 INFO L225 Difference]: With dead ends: 185 [2020-10-14 23:25:32,507 INFO L226 Difference]: Without dead ends: 161 [2020-10-14 23:25:32,508 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=60, Invalid=446, Unknown=0, NotChecked=0, Total=506 [2020-10-14 23:25:32,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2020-10-14 23:25:32,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 126. [2020-10-14 23:25:32,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-10-14 23:25:32,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 129 transitions. [2020-10-14 23:25:32,517 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 129 transitions. Word has length 64 [2020-10-14 23:25:32,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:25:32,518 INFO L479 AbstractCegarLoop]: Abstraction has 126 states and 129 transitions. [2020-10-14 23:25:32,518 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 23:25:32,518 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 129 transitions. [2020-10-14 23:25:32,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-14 23:25:32,518 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:25:32,518 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:25:32,518 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-14 23:25:32,519 INFO L427 AbstractCegarLoop]: === Iteration 41 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:25:32,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:25:32,519 INFO L82 PathProgramCache]: Analyzing trace with hash -1022956629, now seen corresponding path program 11 times [2020-10-14 23:25:32,519 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:25:32,519 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1600009344] [2020-10-14 23:25:32,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:25:32,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:32,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:32,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:33,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:33,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 23:25:33,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:25:33,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 760 [2020-10-14 23:25:33,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:33,290 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:33,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 23:25:33,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:25:33,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-14 23:25:33,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:33,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:25:33,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:33,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:33,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:33,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:25:33,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:33,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:25:33,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:33,772 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:33,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:25:33,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:25:33,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:25:33,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:33,807 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:25:33,808 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1600009344] [2020-10-14 23:25:33,808 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:25:33,808 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-14 23:25:33,808 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945083490] [2020-10-14 23:25:33,808 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 23:25:33,808 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:25:33,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 23:25:33,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2020-10-14 23:25:33,809 INFO L87 Difference]: Start difference. First operand 126 states and 129 transitions. Second operand 16 states. [2020-10-14 23:25:34,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:25:34,722 INFO L93 Difference]: Finished difference Result 177 states and 182 transitions. [2020-10-14 23:25:34,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 23:25:34,723 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 66 [2020-10-14 23:25:34,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:25:34,725 INFO L225 Difference]: With dead ends: 177 [2020-10-14 23:25:34,725 INFO L226 Difference]: Without dead ends: 175 [2020-10-14 23:25:34,726 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=33, Invalid=239, Unknown=0, NotChecked=0, Total=272 [2020-10-14 23:25:34,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-10-14 23:25:34,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 167. [2020-10-14 23:25:34,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2020-10-14 23:25:34,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 172 transitions. [2020-10-14 23:25:34,737 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 172 transitions. Word has length 66 [2020-10-14 23:25:34,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:25:34,738 INFO L479 AbstractCegarLoop]: Abstraction has 167 states and 172 transitions. [2020-10-14 23:25:34,738 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 23:25:34,738 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 172 transitions. [2020-10-14 23:25:34,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-14 23:25:34,739 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:25:34,739 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:25:34,739 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-14 23:25:34,739 INFO L427 AbstractCegarLoop]: === Iteration 42 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:25:34,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:25:34,739 INFO L82 PathProgramCache]: Analyzing trace with hash -1022918893, now seen corresponding path program 10 times [2020-10-14 23:25:34,740 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:25:34,740 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1617593323] [2020-10-14 23:25:34,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:25:34,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:34,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:35,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:35,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 23:25:35,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:35,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 594 [2020-10-14 23:25:35,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:35,395 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:35,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 23:25:35,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:25:35,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-14 23:25:35,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:35,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:25:35,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:35,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:35,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:35,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:25:35,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:35,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:25:35,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:35,984 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:35,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:25:35,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:25:35,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:25:35,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:36,017 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 10 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:25:36,018 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1617593323] [2020-10-14 23:25:36,018 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:25:36,018 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-14 23:25:36,019 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640943509] [2020-10-14 23:25:36,019 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 23:25:36,019 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:25:36,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 23:25:36,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2020-10-14 23:25:36,020 INFO L87 Difference]: Start difference. First operand 167 states and 172 transitions. Second operand 16 states. [2020-10-14 23:25:36,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:25:36,846 INFO L93 Difference]: Finished difference Result 201 states and 207 transitions. [2020-10-14 23:25:36,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 23:25:36,846 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 66 [2020-10-14 23:25:36,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:25:36,847 INFO L225 Difference]: With dead ends: 201 [2020-10-14 23:25:36,847 INFO L226 Difference]: Without dead ends: 169 [2020-10-14 23:25:36,848 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=33, Invalid=239, Unknown=0, NotChecked=0, Total=272 [2020-10-14 23:25:36,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2020-10-14 23:25:36,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 167. [2020-10-14 23:25:36,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2020-10-14 23:25:36,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 171 transitions. [2020-10-14 23:25:36,860 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 171 transitions. Word has length 66 [2020-10-14 23:25:36,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:25:36,861 INFO L479 AbstractCegarLoop]: Abstraction has 167 states and 171 transitions. [2020-10-14 23:25:36,861 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 23:25:36,861 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 171 transitions. [2020-10-14 23:25:36,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-14 23:25:36,861 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:25:36,862 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:25:36,862 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-14 23:25:36,864 INFO L427 AbstractCegarLoop]: === Iteration 43 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:25:36,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:25:36,864 INFO L82 PathProgramCache]: Analyzing trace with hash -798386477, now seen corresponding path program 5 times [2020-10-14 23:25:36,865 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:25:36,865 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1121956616] [2020-10-14 23:25:36,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:25:36,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:37,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:37,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:37,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 23:25:37,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:37,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 591 [2020-10-14 23:25:37,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:37,533 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:37,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 23:25:37,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:25:37,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-14 23:25:37,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:38,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:25:38,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:38,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:38,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:38,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:25:38,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:38,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:25:38,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:38,145 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:38,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:25:38,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:25:38,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:25:38,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:38,185 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:25:38,186 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1121956616] [2020-10-14 23:25:38,186 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:25:38,186 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 23:25:38,186 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055043887] [2020-10-14 23:25:38,186 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 23:25:38,187 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:25:38,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 23:25:38,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2020-10-14 23:25:38,187 INFO L87 Difference]: Start difference. First operand 167 states and 171 transitions. Second operand 17 states. [2020-10-14 23:25:39,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:25:39,094 INFO L93 Difference]: Finished difference Result 175 states and 179 transitions. [2020-10-14 23:25:39,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 23:25:39,095 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 70 [2020-10-14 23:25:39,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:25:39,097 INFO L225 Difference]: With dead ends: 175 [2020-10-14 23:25:39,097 INFO L226 Difference]: Without dead ends: 173 [2020-10-14 23:25:39,097 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2020-10-14 23:25:39,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2020-10-14 23:25:39,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 139. [2020-10-14 23:25:39,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-10-14 23:25:39,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 143 transitions. [2020-10-14 23:25:39,110 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 143 transitions. Word has length 70 [2020-10-14 23:25:39,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:25:39,110 INFO L479 AbstractCegarLoop]: Abstraction has 139 states and 143 transitions. [2020-10-14 23:25:39,110 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 23:25:39,110 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 143 transitions. [2020-10-14 23:25:39,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-14 23:25:39,111 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:25:39,111 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:25:39,111 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-14 23:25:39,112 INFO L427 AbstractCegarLoop]: === Iteration 44 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:25:39,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:25:39,112 INFO L82 PathProgramCache]: Analyzing trace with hash 877164052, now seen corresponding path program 12 times [2020-10-14 23:25:39,112 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:25:39,112 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [236835059] [2020-10-14 23:25:39,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:25:39,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:39,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:39,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:40,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:40,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 23:25:40,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:25:40,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 965 [2020-10-14 23:25:40,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:40,093 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:40,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 23:25:40,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:25:40,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-14 23:25:40,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:40,663 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 70 [2020-10-14 23:25:40,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:25:40,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:40,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:40,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:40,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:25:40,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:40,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:25:40,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:40,853 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:40,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:25:40,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:25:40,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:25:40,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:40,903 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 0 proven. 142 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:25:40,904 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [236835059] [2020-10-14 23:25:40,904 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:25:40,904 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 23:25:40,904 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354236758] [2020-10-14 23:25:40,904 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 23:25:40,904 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:25:40,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 23:25:40,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2020-10-14 23:25:40,905 INFO L87 Difference]: Start difference. First operand 139 states and 143 transitions. Second operand 17 states. [2020-10-14 23:25:42,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:25:42,225 INFO L93 Difference]: Finished difference Result 207 states and 212 transitions. [2020-10-14 23:25:42,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 23:25:42,226 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 70 [2020-10-14 23:25:42,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:25:42,227 INFO L225 Difference]: With dead ends: 207 [2020-10-14 23:25:42,228 INFO L226 Difference]: Without dead ends: 183 [2020-10-14 23:25:42,228 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=64, Invalid=536, Unknown=0, NotChecked=0, Total=600 [2020-10-14 23:25:42,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2020-10-14 23:25:42,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 143. [2020-10-14 23:25:42,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-10-14 23:25:42,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 147 transitions. [2020-10-14 23:25:42,240 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 147 transitions. Word has length 70 [2020-10-14 23:25:42,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:25:42,240 INFO L479 AbstractCegarLoop]: Abstraction has 143 states and 147 transitions. [2020-10-14 23:25:42,240 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 23:25:42,240 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 147 transitions. [2020-10-14 23:25:42,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-14 23:25:42,241 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:25:42,241 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:25:42,241 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-10-14 23:25:42,242 INFO L427 AbstractCegarLoop]: === Iteration 45 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:25:42,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:25:42,242 INFO L82 PathProgramCache]: Analyzing trace with hash 877201788, now seen corresponding path program 11 times [2020-10-14 23:25:42,242 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:25:42,242 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [944936340] [2020-10-14 23:25:42,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:25:42,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:42,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:43,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:43,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 23:25:43,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:43,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 808 [2020-10-14 23:25:43,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:43,142 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:43,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 23:25:43,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:25:43,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-14 23:25:43,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:43,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:25:43,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:43,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:43,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:43,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:25:43,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:43,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:25:43,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:43,722 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:43,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:25:43,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:25:43,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:25:43,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:43,762 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 0 proven. 152 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:25:43,762 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [944936340] [2020-10-14 23:25:43,762 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:25:43,762 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 23:25:43,763 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350020180] [2020-10-14 23:25:43,763 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 23:25:43,763 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:25:43,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 23:25:43,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2020-10-14 23:25:43,764 INFO L87 Difference]: Start difference. First operand 143 states and 147 transitions. Second operand 17 states. [2020-10-14 23:25:45,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:25:45,244 INFO L93 Difference]: Finished difference Result 155 states and 159 transitions. [2020-10-14 23:25:45,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 23:25:45,244 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 70 [2020-10-14 23:25:45,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:25:45,246 INFO L225 Difference]: With dead ends: 155 [2020-10-14 23:25:45,246 INFO L226 Difference]: Without dead ends: 153 [2020-10-14 23:25:45,247 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=64, Invalid=536, Unknown=0, NotChecked=0, Total=600 [2020-10-14 23:25:45,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-10-14 23:25:45,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 145. [2020-10-14 23:25:45,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-10-14 23:25:45,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 149 transitions. [2020-10-14 23:25:45,259 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 149 transitions. Word has length 70 [2020-10-14 23:25:45,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:25:45,259 INFO L479 AbstractCegarLoop]: Abstraction has 145 states and 149 transitions. [2020-10-14 23:25:45,259 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 23:25:45,259 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 149 transitions. [2020-10-14 23:25:45,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-14 23:25:45,260 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:25:45,260 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:25:45,261 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-10-14 23:25:45,261 INFO L427 AbstractCegarLoop]: === Iteration 46 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:25:45,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:25:45,261 INFO L82 PathProgramCache]: Analyzing trace with hash 1416764957, now seen corresponding path program 9 times [2020-10-14 23:25:45,261 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:25:45,262 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1116870048] [2020-10-14 23:25:45,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:25:45,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:45,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:45,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:45,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:45,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:50,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:50,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-14 23:25:50,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 23:25:50,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-14 23:25:50,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:50,287 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:50,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 23:25:50,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:25:50,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-14 23:25:50,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:50,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:25:50,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:50,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:50,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:50,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:25:50,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:50,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 23:25:50,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:50,637 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:50,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:25:50,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:25:50,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:25:50,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:50,693 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2020-10-14 23:25:50,693 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1116870048] [2020-10-14 23:25:50,693 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:25:50,693 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 23:25:50,693 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457911730] [2020-10-14 23:25:50,694 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 23:25:50,696 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:25:50,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 23:25:50,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-10-14 23:25:50,697 INFO L87 Difference]: Start difference. First operand 145 states and 149 transitions. Second operand 14 states. [2020-10-14 23:25:51,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:25:51,427 INFO L93 Difference]: Finished difference Result 175 states and 179 transitions. [2020-10-14 23:25:51,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 23:25:51,428 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 72 [2020-10-14 23:25:51,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:25:51,429 INFO L225 Difference]: With dead ends: 175 [2020-10-14 23:25:51,429 INFO L226 Difference]: Without dead ends: 171 [2020-10-14 23:25:51,430 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=67, Invalid=439, Unknown=0, NotChecked=0, Total=506 [2020-10-14 23:25:51,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-10-14 23:25:51,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 147. [2020-10-14 23:25:51,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-10-14 23:25:51,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 151 transitions. [2020-10-14 23:25:51,441 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 151 transitions. Word has length 72 [2020-10-14 23:25:51,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:25:51,441 INFO L479 AbstractCegarLoop]: Abstraction has 147 states and 151 transitions. [2020-10-14 23:25:51,441 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 23:25:51,441 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 151 transitions. [2020-10-14 23:25:51,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-14 23:25:51,442 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:25:51,442 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:25:51,442 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-10-14 23:25:51,442 INFO L427 AbstractCegarLoop]: === Iteration 47 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:25:51,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:25:51,443 INFO L82 PathProgramCache]: Analyzing trace with hash 53263416, now seen corresponding path program 10 times [2020-10-14 23:25:51,443 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:25:51,443 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1488506479] [2020-10-14 23:25:51,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:25:51,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:51,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:51,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:51,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:51,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:56,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:56,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 23:25:56,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 23:25:56,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 23:25:56,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:56,455 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:56,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 23:25:56,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:25:56,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-14 23:25:56,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:56,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:25:56,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:56,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:56,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:56,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:25:56,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:56,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:25:56,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:56,903 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:56,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:25:56,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:25:56,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:25:56,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:56,943 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2020-10-14 23:25:56,943 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1488506479] [2020-10-14 23:25:56,944 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:25:56,944 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 23:25:56,944 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131241362] [2020-10-14 23:25:56,944 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 23:25:56,944 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:25:56,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 23:25:56,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2020-10-14 23:25:56,945 INFO L87 Difference]: Start difference. First operand 147 states and 151 transitions. Second operand 15 states. [2020-10-14 23:25:57,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:25:57,765 INFO L93 Difference]: Finished difference Result 195 states and 199 transitions. [2020-10-14 23:25:57,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 23:25:57,766 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 74 [2020-10-14 23:25:57,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:25:57,768 INFO L225 Difference]: With dead ends: 195 [2020-10-14 23:25:57,768 INFO L226 Difference]: Without dead ends: 191 [2020-10-14 23:25:57,768 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=51, Invalid=369, Unknown=0, NotChecked=0, Total=420 [2020-10-14 23:25:57,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2020-10-14 23:25:57,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 183. [2020-10-14 23:25:57,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2020-10-14 23:25:57,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 187 transitions. [2020-10-14 23:25:57,779 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 187 transitions. Word has length 74 [2020-10-14 23:25:57,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:25:57,780 INFO L479 AbstractCegarLoop]: Abstraction has 183 states and 187 transitions. [2020-10-14 23:25:57,780 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 23:25:57,780 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 187 transitions. [2020-10-14 23:25:57,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-14 23:25:57,781 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:25:57,781 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:25:57,782 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-10-14 23:25:57,782 INFO L427 AbstractCegarLoop]: === Iteration 48 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:25:57,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:25:57,782 INFO L82 PathProgramCache]: Analyzing trace with hash -306692205, now seen corresponding path program 11 times [2020-10-14 23:25:57,782 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:25:57,782 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1968699480] [2020-10-14 23:25:57,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:25:57,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:57,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:57,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:57,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:58,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:00,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:00,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:02,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:02,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-14 23:26:02,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 23:26:02,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 23:26:02,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:02,800 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:02,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 23:26:02,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:26:02,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-14 23:26:02,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:26:03,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:26:03,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:03,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:03,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:03,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:26:03,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:26:03,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:26:03,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:03,236 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:03,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:26:03,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:26:03,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:26:03,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:26:03,277 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 10 proven. 52 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2020-10-14 23:26:03,277 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1968699480] [2020-10-14 23:26:03,277 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:26:03,277 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 23:26:03,277 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078017169] [2020-10-14 23:26:03,278 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 23:26:03,278 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:26:03,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 23:26:03,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2020-10-14 23:26:03,278 INFO L87 Difference]: Start difference. First operand 183 states and 187 transitions. Second operand 15 states. [2020-10-14 23:26:04,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:26:04,064 INFO L93 Difference]: Finished difference Result 197 states and 201 transitions. [2020-10-14 23:26:04,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 23:26:04,065 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 76 [2020-10-14 23:26:04,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:26:04,066 INFO L225 Difference]: With dead ends: 197 [2020-10-14 23:26:04,066 INFO L226 Difference]: Without dead ends: 144 [2020-10-14 23:26:04,067 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=51, Invalid=369, Unknown=0, NotChecked=0, Total=420 [2020-10-14 23:26:04,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-10-14 23:26:04,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2020-10-14 23:26:04,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-10-14 23:26:04,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 147 transitions. [2020-10-14 23:26:04,080 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 147 transitions. Word has length 76 [2020-10-14 23:26:04,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:26:04,080 INFO L479 AbstractCegarLoop]: Abstraction has 144 states and 147 transitions. [2020-10-14 23:26:04,080 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 23:26:04,081 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 147 transitions. [2020-10-14 23:26:04,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-14 23:26:04,081 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:26:04,081 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:26:04,081 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-10-14 23:26:04,081 INFO L427 AbstractCegarLoop]: === Iteration 49 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:26:04,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:26:04,082 INFO L82 PathProgramCache]: Analyzing trace with hash 1885151491, now seen corresponding path program 13 times [2020-10-14 23:26:04,082 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:26:04,082 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1492028340] [2020-10-14 23:26:04,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:26:04,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:04,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:04,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:05,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:05,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-14 23:26:05,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:26:05,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1798 [2020-10-14 23:26:05,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:05,899 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:05,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 23:26:05,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:26:05,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 23:26:05,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:26:06,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:26:06,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:06,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:06,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:06,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:26:06,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:26:06,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:26:06,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:06,737 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:06,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:26:06,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:26:06,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:26:06,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:26:06,786 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:26:06,786 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1492028340] [2020-10-14 23:26:06,786 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:26:06,786 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-14 23:26:06,787 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953368380] [2020-10-14 23:26:06,787 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-14 23:26:06,787 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:26:06,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-14 23:26:06,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2020-10-14 23:26:06,788 INFO L87 Difference]: Start difference. First operand 144 states and 147 transitions. Second operand 18 states. [2020-10-14 23:26:08,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:26:08,035 INFO L93 Difference]: Finished difference Result 201 states and 206 transitions. [2020-10-14 23:26:08,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 23:26:08,035 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 76 [2020-10-14 23:26:08,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:26:08,037 INFO L225 Difference]: With dead ends: 201 [2020-10-14 23:26:08,037 INFO L226 Difference]: Without dead ends: 199 [2020-10-14 23:26:08,038 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=37, Invalid=305, Unknown=0, NotChecked=0, Total=342 [2020-10-14 23:26:08,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2020-10-14 23:26:08,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 191. [2020-10-14 23:26:08,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2020-10-14 23:26:08,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 196 transitions. [2020-10-14 23:26:08,054 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 196 transitions. Word has length 76 [2020-10-14 23:26:08,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:26:08,054 INFO L479 AbstractCegarLoop]: Abstraction has 191 states and 196 transitions. [2020-10-14 23:26:08,054 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-14 23:26:08,054 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 196 transitions. [2020-10-14 23:26:08,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-14 23:26:08,055 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:26:08,055 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:26:08,055 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-10-14 23:26:08,055 INFO L427 AbstractCegarLoop]: === Iteration 50 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:26:08,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:26:08,055 INFO L82 PathProgramCache]: Analyzing trace with hash 1885189227, now seen corresponding path program 12 times [2020-10-14 23:26:08,055 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:26:08,055 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1680525312] [2020-10-14 23:26:08,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:26:08,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:08,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:09,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:09,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-14 23:26:09,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:26:09,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1192 [2020-10-14 23:26:09,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:09,321 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:09,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 23:26:09,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:26:09,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-14 23:26:09,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:26:09,892 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 69 [2020-10-14 23:26:10,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:26:10,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:10,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:10,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:10,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:26:10,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:26:10,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:26:10,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:10,188 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:10,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:26:10,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:26:10,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:26:10,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:26:10,236 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 12 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:26:10,237 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1680525312] [2020-10-14 23:26:10,237 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:26:10,237 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-14 23:26:10,237 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375249695] [2020-10-14 23:26:10,237 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-14 23:26:10,237 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:26:10,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-14 23:26:10,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2020-10-14 23:26:10,238 INFO L87 Difference]: Start difference. First operand 191 states and 196 transitions. Second operand 18 states. [2020-10-14 23:26:11,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:26:11,394 INFO L93 Difference]: Finished difference Result 227 states and 233 transitions. [2020-10-14 23:26:11,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 23:26:11,394 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 76 [2020-10-14 23:26:11,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:26:11,395 INFO L225 Difference]: With dead ends: 227 [2020-10-14 23:26:11,395 INFO L226 Difference]: Without dead ends: 193 [2020-10-14 23:26:11,396 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=37, Invalid=305, Unknown=0, NotChecked=0, Total=342 [2020-10-14 23:26:11,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2020-10-14 23:26:11,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 191. [2020-10-14 23:26:11,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2020-10-14 23:26:11,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 195 transitions. [2020-10-14 23:26:11,411 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 195 transitions. Word has length 76 [2020-10-14 23:26:11,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:26:11,411 INFO L479 AbstractCegarLoop]: Abstraction has 191 states and 195 transitions. [2020-10-14 23:26:11,411 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-14 23:26:11,411 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 195 transitions. [2020-10-14 23:26:11,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-14 23:26:11,412 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:26:11,412 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:26:11,412 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2020-10-14 23:26:11,414 INFO L427 AbstractCegarLoop]: === Iteration 51 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:26:11,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:26:11,414 INFO L82 PathProgramCache]: Analyzing trace with hash -764059605, now seen corresponding path program 6 times [2020-10-14 23:26:11,414 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:26:11,414 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1900341972] [2020-10-14 23:26:11,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:26:11,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:11,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:12,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:12,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-14 23:26:12,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:26:12,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 990 [2020-10-14 23:26:12,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:12,528 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:12,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-14 23:26:12,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:26:12,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 23:26:12,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:26:13,099 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 64 [2020-10-14 23:26:13,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:26:13,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:13,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:13,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:13,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:26:13,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:26:13,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:26:13,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:13,445 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:13,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:26:13,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:26:13,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:26:13,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:26:13,504 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:26:13,504 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1900341972] [2020-10-14 23:26:13,504 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:26:13,504 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-14 23:26:13,505 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844411151] [2020-10-14 23:26:13,505 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-14 23:26:13,505 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:26:13,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-14 23:26:13,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2020-10-14 23:26:13,505 INFO L87 Difference]: Start difference. First operand 191 states and 195 transitions. Second operand 19 states. [2020-10-14 23:26:14,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:26:14,772 INFO L93 Difference]: Finished difference Result 199 states and 203 transitions. [2020-10-14 23:26:14,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-14 23:26:14,772 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 80 [2020-10-14 23:26:14,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:26:14,774 INFO L225 Difference]: With dead ends: 199 [2020-10-14 23:26:14,774 INFO L226 Difference]: Without dead ends: 197 [2020-10-14 23:26:14,775 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=47, Invalid=415, Unknown=0, NotChecked=0, Total=462 [2020-10-14 23:26:14,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2020-10-14 23:26:14,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 157. [2020-10-14 23:26:14,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-10-14 23:26:14,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 161 transitions. [2020-10-14 23:26:14,785 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 161 transitions. Word has length 80 [2020-10-14 23:26:14,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:26:14,785 INFO L479 AbstractCegarLoop]: Abstraction has 157 states and 161 transitions. [2020-10-14 23:26:14,785 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-14 23:26:14,785 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 161 transitions. [2020-10-14 23:26:14,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-14 23:26:14,786 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:26:14,786 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:26:14,786 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2020-10-14 23:26:14,786 INFO L427 AbstractCegarLoop]: === Iteration 52 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:26:14,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:26:14,786 INFO L82 PathProgramCache]: Analyzing trace with hash 1585937452, now seen corresponding path program 14 times [2020-10-14 23:26:14,787 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:26:14,787 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [499740625] [2020-10-14 23:26:14,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:26:14,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:14,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:15,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:16,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:16,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-14 23:26:16,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:26:16,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1479 [2020-10-14 23:26:16,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:16,279 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:16,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-14 23:26:16,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:26:16,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-14 23:26:16,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:26:16,779 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 77 [2020-10-14 23:26:16,918 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 77 [2020-10-14 23:26:17,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:26:17,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:17,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:17,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:17,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:26:17,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:26:17,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:26:17,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:17,190 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:17,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:26:17,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:26:17,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:26:17,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:26:17,253 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 200 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:26:17,253 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [499740625] [2020-10-14 23:26:17,253 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:26:17,253 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-14 23:26:17,253 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226423369] [2020-10-14 23:26:17,254 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-14 23:26:17,254 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:26:17,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-14 23:26:17,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2020-10-14 23:26:17,254 INFO L87 Difference]: Start difference. First operand 157 states and 161 transitions. Second operand 19 states. [2020-10-14 23:26:19,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:26:19,056 INFO L93 Difference]: Finished difference Result 274 states and 280 transitions. [2020-10-14 23:26:19,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 23:26:19,057 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 80 [2020-10-14 23:26:19,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:26:19,059 INFO L225 Difference]: With dead ends: 274 [2020-10-14 23:26:19,059 INFO L226 Difference]: Without dead ends: 248 [2020-10-14 23:26:19,059 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=68, Invalid=634, Unknown=0, NotChecked=0, Total=702 [2020-10-14 23:26:19,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2020-10-14 23:26:19,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 202. [2020-10-14 23:26:19,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-10-14 23:26:19,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 207 transitions. [2020-10-14 23:26:19,074 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 207 transitions. Word has length 80 [2020-10-14 23:26:19,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:26:19,074 INFO L479 AbstractCegarLoop]: Abstraction has 202 states and 207 transitions. [2020-10-14 23:26:19,074 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-14 23:26:19,075 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 207 transitions. [2020-10-14 23:26:19,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-14 23:26:19,075 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:26:19,075 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:26:19,076 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2020-10-14 23:26:19,076 INFO L427 AbstractCegarLoop]: === Iteration 53 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:26:19,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:26:19,076 INFO L82 PathProgramCache]: Analyzing trace with hash 1585975188, now seen corresponding path program 13 times [2020-10-14 23:26:19,076 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:26:19,077 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1423880240] [2020-10-14 23:26:19,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:26:19,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:19,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:20,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:20,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-14 23:26:20,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:26:20,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 917 [2020-10-14 23:26:20,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:20,079 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:20,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-14 23:26:20,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:26:20,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 23:26:20,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:26:20,622 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 70 [2020-10-14 23:26:21,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:26:21,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:21,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:21,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:21,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:26:21,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:26:21,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:26:21,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:21,029 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:21,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:26:21,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:26:21,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:26:21,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:26:21,087 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 0 proven. 212 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:26:21,088 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1423880240] [2020-10-14 23:26:21,088 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:26:21,088 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-14 23:26:21,088 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084103427] [2020-10-14 23:26:21,089 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-14 23:26:21,089 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:26:21,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-14 23:26:21,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2020-10-14 23:26:21,089 INFO L87 Difference]: Start difference. First operand 202 states and 207 transitions. Second operand 19 states. [2020-10-14 23:26:22,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:26:22,973 INFO L93 Difference]: Finished difference Result 224 states and 230 transitions. [2020-10-14 23:26:22,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-14 23:26:22,974 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 80 [2020-10-14 23:26:22,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:26:22,976 INFO L225 Difference]: With dead ends: 224 [2020-10-14 23:26:22,976 INFO L226 Difference]: Without dead ends: 222 [2020-10-14 23:26:22,976 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=68, Invalid=634, Unknown=0, NotChecked=0, Total=702 [2020-10-14 23:26:22,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2020-10-14 23:26:22,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 208. [2020-10-14 23:26:22,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 208 states. [2020-10-14 23:26:22,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 214 transitions. [2020-10-14 23:26:22,993 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 214 transitions. Word has length 80 [2020-10-14 23:26:22,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:26:22,994 INFO L479 AbstractCegarLoop]: Abstraction has 208 states and 214 transitions. [2020-10-14 23:26:22,994 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-14 23:26:22,994 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 214 transitions. [2020-10-14 23:26:22,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-14 23:26:22,995 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:26:22,995 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:26:22,995 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2020-10-14 23:26:22,995 INFO L427 AbstractCegarLoop]: === Iteration 54 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:26:22,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:26:22,996 INFO L82 PathProgramCache]: Analyzing trace with hash -1703306032, now seen corresponding path program 12 times [2020-10-14 23:26:22,996 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:26:22,996 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1516070226] [2020-10-14 23:26:22,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:26:23,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:23,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:23,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:23,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:23,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:28,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:28,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-14 23:26:28,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 23:26:28,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 23:26:28,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:28,015 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:28,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 23:26:28,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:26:28,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 23:26:28,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:26:28,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:26:28,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:28,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:28,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:28,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:26:28,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:26:28,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:26:28,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:28,525 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:28,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:26:28,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:26:28,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:26:28,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:26:28,581 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2020-10-14 23:26:28,581 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1516070226] [2020-10-14 23:26:28,581 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:26:28,582 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-14 23:26:28,582 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133915613] [2020-10-14 23:26:28,582 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 23:26:28,582 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:26:28,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 23:26:28,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2020-10-14 23:26:28,582 INFO L87 Difference]: Start difference. First operand 208 states and 214 transitions. Second operand 16 states. [2020-10-14 23:26:29,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:26:29,742 INFO L93 Difference]: Finished difference Result 244 states and 250 transitions. [2020-10-14 23:26:29,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 23:26:29,743 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 84 [2020-10-14 23:26:29,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:26:29,745 INFO L225 Difference]: With dead ends: 244 [2020-10-14 23:26:29,745 INFO L226 Difference]: Without dead ends: 240 [2020-10-14 23:26:29,746 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=79, Invalid=623, Unknown=0, NotChecked=0, Total=702 [2020-10-14 23:26:29,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2020-10-14 23:26:29,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 210. [2020-10-14 23:26:29,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210 states. [2020-10-14 23:26:29,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 216 transitions. [2020-10-14 23:26:29,763 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 216 transitions. Word has length 84 [2020-10-14 23:26:29,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:26:29,763 INFO L479 AbstractCegarLoop]: Abstraction has 210 states and 216 transitions. [2020-10-14 23:26:29,763 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 23:26:29,763 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 216 transitions. [2020-10-14 23:26:29,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-14 23:26:29,764 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:26:29,764 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:26:29,765 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2020-10-14 23:26:29,765 INFO L427 AbstractCegarLoop]: === Iteration 55 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:26:29,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:26:29,765 INFO L82 PathProgramCache]: Analyzing trace with hash 743316181, now seen corresponding path program 15 times [2020-10-14 23:26:29,765 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:26:29,765 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [678425928] [2020-10-14 23:26:29,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:26:29,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:29,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:30,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:31,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:31,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-14 23:26:31,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:26:31,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1641 [2020-10-14 23:26:31,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:31,420 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:31,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-14 23:26:31,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:26:31,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 23:26:31,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:26:32,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:26:32,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:32,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:32,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:32,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:26:32,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:26:32,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:26:32,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:32,453 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:32,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:26:32,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:26:32,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:26:32,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:26:32,525 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 0 proven. 230 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:26:32,525 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [678425928] [2020-10-14 23:26:32,525 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:26:32,525 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-14 23:26:32,526 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101684715] [2020-10-14 23:26:32,526 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-14 23:26:32,526 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:26:32,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-14 23:26:32,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=341, Unknown=0, NotChecked=0, Total=380 [2020-10-14 23:26:32,526 INFO L87 Difference]: Start difference. First operand 210 states and 216 transitions. Second operand 20 states. [2020-10-14 23:26:34,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:26:34,393 INFO L93 Difference]: Finished difference Result 280 states and 286 transitions. [2020-10-14 23:26:34,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 23:26:34,394 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 84 [2020-10-14 23:26:34,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:26:34,395 INFO L225 Difference]: With dead ends: 280 [2020-10-14 23:26:34,396 INFO L226 Difference]: Without dead ends: 252 [2020-10-14 23:26:34,397 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=72, Invalid=684, Unknown=0, NotChecked=0, Total=756 [2020-10-14 23:26:34,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2020-10-14 23:26:34,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 165. [2020-10-14 23:26:34,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2020-10-14 23:26:34,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 169 transitions. [2020-10-14 23:26:34,412 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 169 transitions. Word has length 84 [2020-10-14 23:26:34,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:26:34,413 INFO L479 AbstractCegarLoop]: Abstraction has 165 states and 169 transitions. [2020-10-14 23:26:34,413 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-14 23:26:34,413 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 169 transitions. [2020-10-14 23:26:34,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-14 23:26:34,414 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:26:34,414 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:26:34,414 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2020-10-14 23:26:34,414 INFO L427 AbstractCegarLoop]: === Iteration 56 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:26:34,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:26:34,415 INFO L82 PathProgramCache]: Analyzing trace with hash -447784405, now seen corresponding path program 13 times [2020-10-14 23:26:34,415 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:26:34,415 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1961153499] [2020-10-14 23:26:34,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:26:34,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:34,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:34,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:34,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:35,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:39,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:39,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-14 23:26:39,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 23:26:39,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-14 23:26:39,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:39,433 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:39,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 23:26:39,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:26:39,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-14 23:26:39,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:26:39,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:26:39,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:39,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:39,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:39,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:26:39,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:26:39,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:26:39,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:39,969 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:39,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:26:39,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:26:39,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:26:39,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:26:40,032 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2020-10-14 23:26:40,032 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1961153499] [2020-10-14 23:26:40,033 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:26:40,033 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 23:26:40,033 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123971326] [2020-10-14 23:26:40,033 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 23:26:40,033 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:26:40,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 23:26:40,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2020-10-14 23:26:40,034 INFO L87 Difference]: Start difference. First operand 165 states and 169 transitions. Second operand 17 states. [2020-10-14 23:26:41,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:26:41,245 INFO L93 Difference]: Finished difference Result 221 states and 225 transitions. [2020-10-14 23:26:41,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-14 23:26:41,245 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 86 [2020-10-14 23:26:41,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:26:41,247 INFO L225 Difference]: With dead ends: 221 [2020-10-14 23:26:41,247 INFO L226 Difference]: Without dead ends: 217 [2020-10-14 23:26:41,247 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=65, Invalid=535, Unknown=0, NotChecked=0, Total=600 [2020-10-14 23:26:41,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2020-10-14 23:26:41,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 207. [2020-10-14 23:26:41,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207 states. [2020-10-14 23:26:41,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 211 transitions. [2020-10-14 23:26:41,261 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 211 transitions. Word has length 86 [2020-10-14 23:26:41,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:26:41,261 INFO L479 AbstractCegarLoop]: Abstraction has 207 states and 211 transitions. [2020-10-14 23:26:41,261 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 23:26:41,261 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 211 transitions. [2020-10-14 23:26:41,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-14 23:26:41,262 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:26:41,262 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:26:41,262 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2020-10-14 23:26:41,262 INFO L427 AbstractCegarLoop]: === Iteration 57 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:26:41,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:26:41,262 INFO L82 PathProgramCache]: Analyzing trace with hash 173356315, now seen corresponding path program 16 times [2020-10-14 23:26:41,262 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:26:41,262 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1498971957] [2020-10-14 23:26:41,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:26:41,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:41,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:41,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:43,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:43,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-14 23:26:43,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:26:43,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2007 [2020-10-14 23:26:43,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:43,287 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:43,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-14 23:26:43,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:26:43,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-14 23:26:43,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:26:43,712 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 61 [2020-10-14 23:26:43,844 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 70 [2020-10-14 23:26:44,015 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 79 [2020-10-14 23:26:44,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:26:44,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:44,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:44,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:44,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:26:44,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:26:44,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:26:44,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:44,403 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:44,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:26:44,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:26:44,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:26:44,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:26:44,476 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:26:44,476 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1498971957] [2020-10-14 23:26:44,476 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:26:44,476 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-14 23:26:44,476 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927739576] [2020-10-14 23:26:44,477 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-14 23:26:44,477 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:26:44,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-14 23:26:44,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=343, Unknown=0, NotChecked=0, Total=380 [2020-10-14 23:26:44,477 INFO L87 Difference]: Start difference. First operand 207 states and 211 transitions. Second operand 20 states. [2020-10-14 23:26:46,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:26:46,122 INFO L93 Difference]: Finished difference Result 270 states and 276 transitions. [2020-10-14 23:26:46,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-14 23:26:46,122 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 86 [2020-10-14 23:26:46,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:26:46,124 INFO L225 Difference]: With dead ends: 270 [2020-10-14 23:26:46,124 INFO L226 Difference]: Without dead ends: 268 [2020-10-14 23:26:46,125 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=41, Invalid=379, Unknown=0, NotChecked=0, Total=420 [2020-10-14 23:26:46,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2020-10-14 23:26:46,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 260. [2020-10-14 23:26:46,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 260 states. [2020-10-14 23:26:46,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 266 transitions. [2020-10-14 23:26:46,142 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 266 transitions. Word has length 86 [2020-10-14 23:26:46,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:26:46,142 INFO L479 AbstractCegarLoop]: Abstraction has 260 states and 266 transitions. [2020-10-14 23:26:46,142 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-14 23:26:46,142 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 266 transitions. [2020-10-14 23:26:46,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-14 23:26:46,143 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:26:46,143 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:26:46,144 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2020-10-14 23:26:46,144 INFO L427 AbstractCegarLoop]: === Iteration 58 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:26:46,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:26:46,144 INFO L82 PathProgramCache]: Analyzing trace with hash 173394051, now seen corresponding path program 14 times [2020-10-14 23:26:46,144 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:26:46,144 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1191382954] [2020-10-14 23:26:46,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:26:46,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:46,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:47,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:47,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-14 23:26:47,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:26:47,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1203 [2020-10-14 23:26:47,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:47,437 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:47,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-14 23:26:47,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:26:47,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-14 23:26:47,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:26:48,118 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 78 [2020-10-14 23:26:48,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:26:48,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:48,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:48,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:48,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:26:48,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:26:48,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:26:48,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:48,491 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:48,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:26:48,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:26:48,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:26:48,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:26:48,562 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 14 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:26:48,562 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1191382954] [2020-10-14 23:26:48,562 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:26:48,562 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-14 23:26:48,563 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112542243] [2020-10-14 23:26:48,563 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-14 23:26:48,563 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:26:48,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-14 23:26:48,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=343, Unknown=0, NotChecked=0, Total=380 [2020-10-14 23:26:48,563 INFO L87 Difference]: Start difference. First operand 260 states and 266 transitions. Second operand 20 states. [2020-10-14 23:26:50,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:26:50,791 INFO L93 Difference]: Finished difference Result 298 states and 305 transitions. [2020-10-14 23:26:50,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-14 23:26:50,792 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 86 [2020-10-14 23:26:50,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:26:50,793 INFO L225 Difference]: With dead ends: 298 [2020-10-14 23:26:50,794 INFO L226 Difference]: Without dead ends: 262 [2020-10-14 23:26:50,794 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2020-10-14 23:26:50,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2020-10-14 23:26:50,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 260. [2020-10-14 23:26:50,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 260 states. [2020-10-14 23:26:50,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 265 transitions. [2020-10-14 23:26:50,815 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 265 transitions. Word has length 86 [2020-10-14 23:26:50,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:26:50,816 INFO L479 AbstractCegarLoop]: Abstraction has 260 states and 265 transitions. [2020-10-14 23:26:50,816 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-14 23:26:50,816 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 265 transitions. [2020-10-14 23:26:50,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-14 23:26:50,817 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:26:50,817 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:26:50,817 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2020-10-14 23:26:50,817 INFO L427 AbstractCegarLoop]: === Iteration 59 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:26:50,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:26:50,818 INFO L82 PathProgramCache]: Analyzing trace with hash -777311034, now seen corresponding path program 14 times [2020-10-14 23:26:50,818 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:26:50,818 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1582104993] [2020-10-14 23:26:50,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:26:50,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:50,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:50,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:51,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:51,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:54,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:54,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:55,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:55,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-14 23:26:55,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 23:26:55,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 23:26:55,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:55,839 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:55,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 23:26:55,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:26:55,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-14 23:26:55,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:26:56,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:26:56,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:56,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:56,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:56,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:26:56,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:26:56,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:26:56,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:56,419 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:56,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:26:56,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:26:56,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:26:56,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:26:56,483 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 12 proven. 80 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2020-10-14 23:26:56,484 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1582104993] [2020-10-14 23:26:56,484 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:26:56,484 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 23:26:56,484 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74074061] [2020-10-14 23:26:56,484 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 23:26:56,485 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:26:56,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 23:26:56,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2020-10-14 23:26:56,485 INFO L87 Difference]: Start difference. First operand 260 states and 265 transitions. Second operand 17 states. [2020-10-14 23:26:57,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:26:57,691 INFO L93 Difference]: Finished difference Result 276 states and 281 transitions. [2020-10-14 23:26:57,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-14 23:26:57,692 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 88 [2020-10-14 23:26:57,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:26:57,693 INFO L225 Difference]: With dead ends: 276 [2020-10-14 23:26:57,693 INFO L226 Difference]: Without dead ends: 215 [2020-10-14 23:26:57,694 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=65, Invalid=535, Unknown=0, NotChecked=0, Total=600 [2020-10-14 23:26:57,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2020-10-14 23:26:57,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 215. [2020-10-14 23:26:57,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2020-10-14 23:26:57,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 219 transitions. [2020-10-14 23:26:57,713 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 219 transitions. Word has length 88 [2020-10-14 23:26:57,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:26:57,713 INFO L479 AbstractCegarLoop]: Abstraction has 215 states and 219 transitions. [2020-10-14 23:26:57,713 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 23:26:57,713 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 219 transitions. [2020-10-14 23:26:57,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-14 23:26:57,714 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:26:57,714 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:26:57,714 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2020-10-14 23:26:57,714 INFO L427 AbstractCegarLoop]: === Iteration 60 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:26:57,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:26:57,715 INFO L82 PathProgramCache]: Analyzing trace with hash -879384509, now seen corresponding path program 7 times [2020-10-14 23:26:57,715 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:26:57,715 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1245091521] [2020-10-14 23:26:57,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:26:57,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:57,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:59,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:59,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-14 23:26:59,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:26:59,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1346 [2020-10-14 23:26:59,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:59,193 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:59,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-14 23:26:59,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:26:59,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-14 23:26:59,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:26:59,797 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 70 [2020-10-14 23:27:00,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:27:00,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:27:00,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:00,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:27:00,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:27:00,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:27:00,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:27:00,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:27:00,330 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:27:00,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:27:00,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:27:00,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:27:00,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:27:00,410 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:27:00,411 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1245091521] [2020-10-14 23:27:00,411 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:27:00,411 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-14 23:27:00,411 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530413367] [2020-10-14 23:27:00,411 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-14 23:27:00,411 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:27:00,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-14 23:27:00,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=381, Unknown=0, NotChecked=0, Total=420 [2020-10-14 23:27:00,412 INFO L87 Difference]: Start difference. First operand 215 states and 219 transitions. Second operand 21 states. [2020-10-14 23:27:02,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:27:02,059 INFO L93 Difference]: Finished difference Result 223 states and 227 transitions. [2020-10-14 23:27:02,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-14 23:27:02,060 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 90 [2020-10-14 23:27:02,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:27:02,062 INFO L225 Difference]: With dead ends: 223 [2020-10-14 23:27:02,062 INFO L226 Difference]: Without dead ends: 221 [2020-10-14 23:27:02,062 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=43, Invalid=419, Unknown=0, NotChecked=0, Total=462 [2020-10-14 23:27:02,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2020-10-14 23:27:02,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 175. [2020-10-14 23:27:02,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2020-10-14 23:27:02,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 179 transitions. [2020-10-14 23:27:02,078 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 179 transitions. Word has length 90 [2020-10-14 23:27:02,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:27:02,079 INFO L479 AbstractCegarLoop]: Abstraction has 175 states and 179 transitions. [2020-10-14 23:27:02,079 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-14 23:27:02,079 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 179 transitions. [2020-10-14 23:27:02,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-14 23:27:02,080 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:27:02,080 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:27:02,080 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2020-10-14 23:27:02,080 INFO L427 AbstractCegarLoop]: === Iteration 61 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:27:02,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:27:02,081 INFO L82 PathProgramCache]: Analyzing trace with hash -265654012, now seen corresponding path program 17 times [2020-10-14 23:27:02,081 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:27:02,081 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1255096439] [2020-10-14 23:27:02,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:27:02,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:27:02,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:02,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:04,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:27:04,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-14 23:27:04,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:27:04,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2270 [2020-10-14 23:27:04,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:27:04,370 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:27:04,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-14 23:27:04,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:27:04,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 23:27:04,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:27:04,951 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 70 [2020-10-14 23:27:05,128 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 87 [2020-10-14 23:27:05,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:27:05,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:27:05,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:05,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:27:05,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:27:05,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:27:05,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:27:05,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:27:05,702 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:27:05,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:27:05,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:27:05,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:27:05,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:27:05,785 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 0 proven. 268 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:27:05,786 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1255096439] [2020-10-14 23:27:05,786 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:27:05,786 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-14 23:27:05,786 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475585994] [2020-10-14 23:27:05,786 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-14 23:27:05,787 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:27:05,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-14 23:27:05,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=380, Unknown=0, NotChecked=0, Total=420 [2020-10-14 23:27:05,787 INFO L87 Difference]: Start difference. First operand 175 states and 179 transitions. Second operand 21 states. [2020-10-14 23:27:08,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:27:08,053 INFO L93 Difference]: Finished difference Result 306 states and 312 transitions. [2020-10-14 23:27:08,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-14 23:27:08,053 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 90 [2020-10-14 23:27:08,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:27:08,055 INFO L225 Difference]: With dead ends: 306 [2020-10-14 23:27:08,055 INFO L226 Difference]: Without dead ends: 278 [2020-10-14 23:27:08,056 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=76, Invalid=794, Unknown=0, NotChecked=0, Total=870 [2020-10-14 23:27:08,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2020-10-14 23:27:08,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 226. [2020-10-14 23:27:08,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-10-14 23:27:08,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 231 transitions. [2020-10-14 23:27:08,072 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 231 transitions. Word has length 90 [2020-10-14 23:27:08,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:27:08,072 INFO L479 AbstractCegarLoop]: Abstraction has 226 states and 231 transitions. [2020-10-14 23:27:08,072 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-14 23:27:08,073 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 231 transitions. [2020-10-14 23:27:08,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-14 23:27:08,073 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:27:08,073 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:27:08,073 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2020-10-14 23:27:08,073 INFO L427 AbstractCegarLoop]: === Iteration 62 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:27:08,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:27:08,074 INFO L82 PathProgramCache]: Analyzing trace with hash -265616276, now seen corresponding path program 15 times [2020-10-14 23:27:08,074 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:27:08,074 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1579768037] [2020-10-14 23:27:08,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:27:08,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:27:08,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:10,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:27:10,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-14 23:27:10,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:27:10,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1832 [2020-10-14 23:27:10,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:27:10,070 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:27:10,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-14 23:27:10,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:27:10,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-14 23:27:10,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:27:10,614 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 64 [2020-10-14 23:27:10,825 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 78 [2020-10-14 23:27:11,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:27:11,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:27:11,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:11,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:27:11,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:27:11,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:27:11,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:27:11,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:27:11,326 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:27:11,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:27:11,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:27:11,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:27:11,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:27:11,406 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 0 proven. 282 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:27:11,406 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1579768037] [2020-10-14 23:27:11,406 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:27:11,406 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-14 23:27:11,407 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393023557] [2020-10-14 23:27:11,407 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-14 23:27:11,407 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:27:11,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-14 23:27:11,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=380, Unknown=0, NotChecked=0, Total=420 [2020-10-14 23:27:11,407 INFO L87 Difference]: Start difference. First operand 226 states and 231 transitions. Second operand 21 states. [2020-10-14 23:27:13,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:27:13,832 INFO L93 Difference]: Finished difference Result 248 states and 254 transitions. [2020-10-14 23:27:13,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-14 23:27:13,833 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 90 [2020-10-14 23:27:13,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:27:13,835 INFO L225 Difference]: With dead ends: 248 [2020-10-14 23:27:13,835 INFO L226 Difference]: Without dead ends: 246 [2020-10-14 23:27:13,835 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=76, Invalid=794, Unknown=0, NotChecked=0, Total=870 [2020-10-14 23:27:13,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2020-10-14 23:27:13,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 232. [2020-10-14 23:27:13,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232 states. [2020-10-14 23:27:13,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 238 transitions. [2020-10-14 23:27:13,855 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 238 transitions. Word has length 90 [2020-10-14 23:27:13,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:27:13,856 INFO L479 AbstractCegarLoop]: Abstraction has 232 states and 238 transitions. [2020-10-14 23:27:13,856 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-14 23:27:13,856 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 238 transitions. [2020-10-14 23:27:13,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-14 23:27:13,857 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:27:13,857 INFO L422 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:27:13,857 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2020-10-14 23:27:13,857 INFO L427 AbstractCegarLoop]: === Iteration 63 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:27:13,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:27:13,858 INFO L82 PathProgramCache]: Analyzing trace with hash 800952429, now seen corresponding path program 18 times [2020-10-14 23:27:13,858 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:27:13,858 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1577800429] [2020-10-14 23:27:13,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:27:13,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:27:13,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:14,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:16,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:27:16,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-14 23:27:16,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:27:16,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2571 [2020-10-14 23:27:16,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:27:16,447 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:27:16,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-14 23:27:16,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:27:16,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-14 23:27:16,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:27:16,980 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 61 [2020-10-14 23:27:17,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:27:17,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:27:17,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:17,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:27:17,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:27:17,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:27:17,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:27:17,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:27:17,883 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:27:17,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:27:17,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:27:17,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:27:17,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:27:17,981 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 0 proven. 302 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:27:17,981 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1577800429] [2020-10-14 23:27:17,981 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:27:17,981 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-14 23:27:17,981 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92597925] [2020-10-14 23:27:17,982 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-14 23:27:17,982 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:27:17,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-14 23:27:17,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=419, Unknown=0, NotChecked=0, Total=462 [2020-10-14 23:27:17,982 INFO L87 Difference]: Start difference. First operand 232 states and 238 transitions. Second operand 22 states. [2020-10-14 23:27:19,438 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 91 [2020-10-14 23:27:20,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:27:20,512 INFO L93 Difference]: Finished difference Result 308 states and 314 transitions. [2020-10-14 23:27:20,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-14 23:27:20,513 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 94 [2020-10-14 23:27:20,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:27:20,515 INFO L225 Difference]: With dead ends: 308 [2020-10-14 23:27:20,515 INFO L226 Difference]: Without dead ends: 280 [2020-10-14 23:27:20,515 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=80, Invalid=850, Unknown=0, NotChecked=0, Total=930 [2020-10-14 23:27:20,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2020-10-14 23:27:20,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 181. [2020-10-14 23:27:20,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2020-10-14 23:27:20,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 185 transitions. [2020-10-14 23:27:20,533 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 185 transitions. Word has length 94 [2020-10-14 23:27:20,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:27:20,533 INFO L479 AbstractCegarLoop]: Abstraction has 181 states and 185 transitions. [2020-10-14 23:27:20,533 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-14 23:27:20,533 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 185 transitions. [2020-10-14 23:27:20,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-14 23:27:20,534 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:27:20,534 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:27:20,534 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2020-10-14 23:27:20,534 INFO L427 AbstractCegarLoop]: === Iteration 64 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:27:20,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:27:20,535 INFO L82 PathProgramCache]: Analyzing trace with hash -1962052733, now seen corresponding path program 15 times [2020-10-14 23:27:20,535 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:27:20,535 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1764080244] [2020-10-14 23:27:20,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:27:20,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:27:20,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:20,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:20,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:21,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:25,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:27:25,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-14 23:27:25,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 23:27:25,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 23:27:25,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:27:25,557 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:27:25,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 23:27:25,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:27:25,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-14 23:27:25,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:27:25,924 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 48 [2020-10-14 23:27:26,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:27:26,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:27:26,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:26,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:27:26,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:27:26,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:27:26,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:27:26,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:27:26,446 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:27:26,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:27:26,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:27:26,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:27:26,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:27:26,529 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2020-10-14 23:27:26,529 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1764080244] [2020-10-14 23:27:26,529 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:27:26,529 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-14 23:27:26,529 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656709363] [2020-10-14 23:27:26,530 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-14 23:27:26,530 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:27:26,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-14 23:27:26,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=270, Unknown=0, NotChecked=0, Total=306 [2020-10-14 23:27:26,530 INFO L87 Difference]: Start difference. First operand 181 states and 185 transitions. Second operand 18 states. [2020-10-14 23:27:28,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:27:28,078 INFO L93 Difference]: Finished difference Result 243 states and 247 transitions. [2020-10-14 23:27:28,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-14 23:27:28,079 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 96 [2020-10-14 23:27:28,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:27:28,081 INFO L225 Difference]: With dead ends: 243 [2020-10-14 23:27:28,081 INFO L226 Difference]: Without dead ends: 239 [2020-10-14 23:27:28,082 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=91, Invalid=839, Unknown=0, NotChecked=0, Total=930 [2020-10-14 23:27:28,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2020-10-14 23:27:28,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 229. [2020-10-14 23:27:28,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2020-10-14 23:27:28,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 233 transitions. [2020-10-14 23:27:28,100 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 233 transitions. Word has length 96 [2020-10-14 23:27:28,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:27:28,100 INFO L479 AbstractCegarLoop]: Abstraction has 229 states and 233 transitions. [2020-10-14 23:27:28,100 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-14 23:27:28,100 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 233 transitions. [2020-10-14 23:27:28,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-14 23:27:28,101 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:27:28,101 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:27:28,101 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2020-10-14 23:27:28,101 INFO L427 AbstractCegarLoop]: === Iteration 65 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:27:28,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:27:28,102 INFO L82 PathProgramCache]: Analyzing trace with hash 1832069107, now seen corresponding path program 19 times [2020-10-14 23:27:28,102 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:27:28,102 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [625907578] [2020-10-14 23:27:28,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:27:28,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:27:28,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:28,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:30,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:27:30,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-14 23:27:30,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:27:30,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2739 [2020-10-14 23:27:30,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:27:30,855 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:27:30,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-14 23:27:30,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:27:30,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-14 23:27:30,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:27:31,341 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 63 [2020-10-14 23:27:31,516 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 78 [2020-10-14 23:27:31,749 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 88 [2020-10-14 23:27:32,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:27:32,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:27:32,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:32,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:27:32,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:27:32,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:27:32,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:27:32,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:27:32,203 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:27:32,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:27:32,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:27:32,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:27:32,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:27:32,300 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:27:32,301 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [625907578] [2020-10-14 23:27:32,301 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:27:32,301 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-14 23:27:32,301 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537760335] [2020-10-14 23:27:32,302 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-14 23:27:32,302 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:27:32,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-14 23:27:32,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=421, Unknown=0, NotChecked=0, Total=462 [2020-10-14 23:27:32,302 INFO L87 Difference]: Start difference. First operand 229 states and 233 transitions. Second operand 22 states. [2020-10-14 23:27:34,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:27:34,557 INFO L93 Difference]: Finished difference Result 298 states and 304 transitions. [2020-10-14 23:27:34,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-14 23:27:34,558 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 96 [2020-10-14 23:27:34,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:27:34,560 INFO L225 Difference]: With dead ends: 298 [2020-10-14 23:27:34,560 INFO L226 Difference]: Without dead ends: 296 [2020-10-14 23:27:34,560 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=49, Invalid=503, Unknown=0, NotChecked=0, Total=552 [2020-10-14 23:27:34,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2020-10-14 23:27:34,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 288. [2020-10-14 23:27:34,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 288 states. [2020-10-14 23:27:34,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 294 transitions. [2020-10-14 23:27:34,579 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 294 transitions. Word has length 96 [2020-10-14 23:27:34,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:27:34,580 INFO L479 AbstractCegarLoop]: Abstraction has 288 states and 294 transitions. [2020-10-14 23:27:34,580 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-14 23:27:34,580 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 294 transitions. [2020-10-14 23:27:34,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-14 23:27:34,581 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:27:34,581 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:27:34,581 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2020-10-14 23:27:34,581 INFO L427 AbstractCegarLoop]: === Iteration 66 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:27:34,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:27:34,581 INFO L82 PathProgramCache]: Analyzing trace with hash 1832106843, now seen corresponding path program 16 times [2020-10-14 23:27:34,581 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:27:34,581 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1451062942] [2020-10-14 23:27:34,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:27:34,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:27:34,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:36,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:27:36,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-14 23:27:36,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:27:36,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1676 [2020-10-14 23:27:36,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:27:36,428 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:27:36,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-14 23:27:36,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:27:36,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-14 23:27:36,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:27:36,982 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 63 [2020-10-14 23:27:37,219 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2020-10-14 23:27:37,413 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 81 [2020-10-14 23:27:37,662 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 89 [2020-10-14 23:27:38,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:27:38,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:27:38,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:38,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:27:38,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:27:38,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:27:38,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:27:38,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:27:38,170 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:27:38,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:27:38,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:27:38,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:27:38,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:27:38,269 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 16 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:27:38,270 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1451062942] [2020-10-14 23:27:38,270 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:27:38,270 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-14 23:27:38,270 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804942167] [2020-10-14 23:27:38,270 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-14 23:27:38,270 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:27:38,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-14 23:27:38,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=421, Unknown=0, NotChecked=0, Total=462 [2020-10-14 23:27:38,271 INFO L87 Difference]: Start difference. First operand 288 states and 294 transitions. Second operand 22 states. [2020-10-14 23:27:40,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:27:40,630 INFO L93 Difference]: Finished difference Result 326 states and 333 transitions. [2020-10-14 23:27:40,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-14 23:27:40,630 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 96 [2020-10-14 23:27:40,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:27:40,633 INFO L225 Difference]: With dead ends: 326 [2020-10-14 23:27:40,633 INFO L226 Difference]: Without dead ends: 290 [2020-10-14 23:27:40,634 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=45, Invalid=461, Unknown=0, NotChecked=0, Total=506 [2020-10-14 23:27:40,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2020-10-14 23:27:40,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 288. [2020-10-14 23:27:40,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 288 states. [2020-10-14 23:27:40,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 293 transitions. [2020-10-14 23:27:40,659 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 293 transitions. Word has length 96 [2020-10-14 23:27:40,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:27:40,659 INFO L479 AbstractCegarLoop]: Abstraction has 288 states and 293 transitions. [2020-10-14 23:27:40,659 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-14 23:27:40,660 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 293 transitions. [2020-10-14 23:27:40,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-14 23:27:40,660 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:27:40,661 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:27:40,661 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2020-10-14 23:27:40,661 INFO L427 AbstractCegarLoop]: === Iteration 67 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:27:40,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:27:40,661 INFO L82 PathProgramCache]: Analyzing trace with hash 4739102, now seen corresponding path program 16 times [2020-10-14 23:27:40,661 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:27:40,662 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [477415175] [2020-10-14 23:27:40,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:27:40,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:27:40,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:40,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:41,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:41,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:45,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:27:45,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-14 23:27:45,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 23:27:45,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 23:27:45,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:27:45,684 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:27:45,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-14 23:27:45,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:27:45,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-14 23:27:45,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:27:46,254 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 69 [2020-10-14 23:27:46,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:27:46,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:27:46,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:46,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:27:46,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:27:46,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:27:46,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:27:46,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:27:46,600 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:27:46,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:27:46,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:27:46,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:27:46,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:27:46,722 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 0 proven. 114 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2020-10-14 23:27:46,723 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [477415175] [2020-10-14 23:27:46,723 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:27:46,723 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-14 23:27:46,723 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826365557] [2020-10-14 23:27:46,723 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-14 23:27:46,723 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:27:46,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-14 23:27:46,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2020-10-14 23:27:46,724 INFO L87 Difference]: Start difference. First operand 288 states and 293 transitions. Second operand 19 states. [2020-10-14 23:27:48,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:27:48,260 INFO L93 Difference]: Finished difference Result 304 states and 309 transitions. [2020-10-14 23:27:48,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-14 23:27:48,261 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 98 [2020-10-14 23:27:48,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:27:48,262 INFO L225 Difference]: With dead ends: 304 [2020-10-14 23:27:48,263 INFO L226 Difference]: Without dead ends: 300 [2020-10-14 23:27:48,263 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=67, Invalid=635, Unknown=0, NotChecked=0, Total=702 [2020-10-14 23:27:48,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2020-10-14 23:27:48,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 290. [2020-10-14 23:27:48,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 290 states. [2020-10-14 23:27:48,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 295 transitions. [2020-10-14 23:27:48,286 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 295 transitions. Word has length 98 [2020-10-14 23:27:48,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:27:48,286 INFO L479 AbstractCegarLoop]: Abstraction has 290 states and 295 transitions. [2020-10-14 23:27:48,286 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-14 23:27:48,286 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 295 transitions. [2020-10-14 23:27:48,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-14 23:27:48,287 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:27:48,287 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:27:48,287 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2020-10-14 23:27:48,287 INFO L427 AbstractCegarLoop]: === Iteration 68 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:27:48,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:27:48,288 INFO L82 PathProgramCache]: Analyzing trace with hash 306082297, now seen corresponding path program 17 times [2020-10-14 23:27:48,288 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:27:48,288 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2110430144] [2020-10-14 23:27:48,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:27:48,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:27:48,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:48,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:48,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:48,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:53,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:27:53,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-14 23:27:53,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 23:27:53,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-14 23:27:53,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:27:53,301 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:27:53,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-14 23:27:53,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:27:53,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-14 23:27:53,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:27:54,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:27:54,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:27:54,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:54,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:27:54,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:27:54,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:27:54,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:27:54,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:27:54,150 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:27:54,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:27:54,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:27:54,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:27:54,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:27:54,242 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 14 proven. 114 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2020-10-14 23:27:54,242 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2110430144] [2020-10-14 23:27:54,242 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:27:54,242 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-14 23:27:54,243 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870520415] [2020-10-14 23:27:54,243 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-14 23:27:54,243 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:27:54,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-14 23:27:54,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2020-10-14 23:27:54,243 INFO L87 Difference]: Start difference. First operand 290 states and 295 transitions. Second operand 19 states. [2020-10-14 23:27:55,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:27:55,784 INFO L93 Difference]: Finished difference Result 306 states and 311 transitions. [2020-10-14 23:27:55,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-14 23:27:55,784 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 100 [2020-10-14 23:27:55,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:27:55,786 INFO L225 Difference]: With dead ends: 306 [2020-10-14 23:27:55,786 INFO L226 Difference]: Without dead ends: 237 [2020-10-14 23:27:55,787 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=67, Invalid=635, Unknown=0, NotChecked=0, Total=702 [2020-10-14 23:27:55,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2020-10-14 23:27:55,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 237. [2020-10-14 23:27:55,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 237 states. [2020-10-14 23:27:55,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 241 transitions. [2020-10-14 23:27:55,802 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 241 transitions. Word has length 100 [2020-10-14 23:27:55,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:27:55,802 INFO L479 AbstractCegarLoop]: Abstraction has 237 states and 241 transitions. [2020-10-14 23:27:55,802 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-14 23:27:55,803 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 241 transitions. [2020-10-14 23:27:55,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-14 23:27:55,803 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:27:55,803 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:27:55,803 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2020-10-14 23:27:55,803 INFO L427 AbstractCegarLoop]: === Iteration 69 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:27:55,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:27:55,804 INFO L82 PathProgramCache]: Analyzing trace with hash -703697125, now seen corresponding path program 8 times [2020-10-14 23:27:55,804 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:27:55,804 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [700914776] [2020-10-14 23:27:55,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:27:55,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:27:56,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:57,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:27:57,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-14 23:27:57,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:27:57,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1770 [2020-10-14 23:27:57,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:27:57,763 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:27:57,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-14 23:27:57,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:27:57,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-14 23:27:57,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:27:58,306 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 63 [2020-10-14 23:27:58,730 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 91 [2020-10-14 23:27:59,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:27:59,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:27:59,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:59,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:27:59,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:27:59,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:27:59,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:27:59,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:27:59,227 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:27:59,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:27:59,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:27:59,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:27:59,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:27:59,335 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:27:59,335 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [700914776] [2020-10-14 23:27:59,335 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:27:59,335 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-14 23:27:59,335 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018245549] [2020-10-14 23:27:59,336 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-14 23:27:59,336 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:27:59,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-14 23:27:59,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=463, Unknown=0, NotChecked=0, Total=506 [2020-10-14 23:27:59,336 INFO L87 Difference]: Start difference. First operand 237 states and 241 transitions. Second operand 23 states. [2020-10-14 23:28:01,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:28:01,457 INFO L93 Difference]: Finished difference Result 245 states and 249 transitions. [2020-10-14 23:28:01,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-14 23:28:01,458 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 100 [2020-10-14 23:28:01,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:28:01,460 INFO L225 Difference]: With dead ends: 245 [2020-10-14 23:28:01,460 INFO L226 Difference]: Without dead ends: 243 [2020-10-14 23:28:01,460 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=47, Invalid=505, Unknown=0, NotChecked=0, Total=552 [2020-10-14 23:28:01,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2020-10-14 23:28:01,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 191. [2020-10-14 23:28:01,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2020-10-14 23:28:01,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 195 transitions. [2020-10-14 23:28:01,480 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 195 transitions. Word has length 100 [2020-10-14 23:28:01,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:28:01,481 INFO L479 AbstractCegarLoop]: Abstraction has 191 states and 195 transitions. [2020-10-14 23:28:01,481 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-14 23:28:01,481 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 195 transitions. [2020-10-14 23:28:01,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-14 23:28:01,482 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:28:01,482 INFO L422 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 9, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:28:01,482 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2020-10-14 23:28:01,482 INFO L427 AbstractCegarLoop]: === Iteration 70 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:28:01,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:28:01,483 INFO L82 PathProgramCache]: Analyzing trace with hash 102847644, now seen corresponding path program 20 times [2020-10-14 23:28:01,483 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:28:01,483 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [766299136] [2020-10-14 23:28:01,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:28:01,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:28:01,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:28:02,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:28:04,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:28:04,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-14 23:28:04,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:28:04,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2828 [2020-10-14 23:28:04,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:28:04,332 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:28:04,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-14 23:28:04,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:28:04,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-14 23:28:04,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:28:05,076 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 64 [2020-10-14 23:28:05,230 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 69 [2020-10-14 23:28:05,471 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 86 [2020-10-14 23:28:06,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:28:06,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:28:06,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:28:06,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:28:06,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:28:06,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:28:06,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:28:06,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:28:06,217 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:28:06,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:28:06,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:28:06,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:28:06,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:28:06,355 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 0 proven. 346 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:28:06,355 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [766299136] [2020-10-14 23:28:06,355 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:28:06,355 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-14 23:28:06,355 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145024210] [2020-10-14 23:28:06,355 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-14 23:28:06,356 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:28:06,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-14 23:28:06,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=462, Unknown=0, NotChecked=0, Total=506 [2020-10-14 23:28:06,356 INFO L87 Difference]: Start difference. First operand 191 states and 195 transitions. Second operand 23 states. [2020-10-14 23:28:09,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:28:09,390 INFO L93 Difference]: Finished difference Result 334 states and 340 transitions. [2020-10-14 23:28:09,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-14 23:28:09,391 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 100 [2020-10-14 23:28:09,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:28:09,393 INFO L225 Difference]: With dead ends: 334 [2020-10-14 23:28:09,393 INFO L226 Difference]: Without dead ends: 306 [2020-10-14 23:28:09,393 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=88, Invalid=1034, Unknown=0, NotChecked=0, Total=1122 [2020-10-14 23:28:09,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2020-10-14 23:28:09,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 248. [2020-10-14 23:28:09,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 248 states. [2020-10-14 23:28:09,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 253 transitions. [2020-10-14 23:28:09,417 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 253 transitions. Word has length 100 [2020-10-14 23:28:09,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:28:09,417 INFO L479 AbstractCegarLoop]: Abstraction has 248 states and 253 transitions. [2020-10-14 23:28:09,418 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-14 23:28:09,418 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 253 transitions. [2020-10-14 23:28:09,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-14 23:28:09,418 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:28:09,419 INFO L422 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:28:09,419 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2020-10-14 23:28:09,419 INFO L427 AbstractCegarLoop]: === Iteration 71 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:28:09,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:28:09,419 INFO L82 PathProgramCache]: Analyzing trace with hash 102885380, now seen corresponding path program 17 times [2020-10-14 23:28:09,420 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:28:09,420 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [768359940] [2020-10-14 23:28:09,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:28:09,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:28:09,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:28:11,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:28:11,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-14 23:28:11,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:28:11,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1768 [2020-10-14 23:28:11,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:28:11,405 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:28:11,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-14 23:28:11,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:28:11,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-14 23:28:11,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:28:12,041 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 72 [2020-10-14 23:28:12,482 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 95 [2020-10-14 23:28:12,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:28:12,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:28:12,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:28:12,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:28:12,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:28:12,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:28:12,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:28:12,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:28:12,959 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:28:12,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:28:12,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:28:12,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:28:12,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:28:13,072 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 0 proven. 362 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:28:13,072 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [768359940] [2020-10-14 23:28:13,073 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:28:13,073 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-14 23:28:13,073 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325738596] [2020-10-14 23:28:13,073 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-14 23:28:13,073 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:28:13,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-14 23:28:13,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=462, Unknown=0, NotChecked=0, Total=506 [2020-10-14 23:28:13,073 INFO L87 Difference]: Start difference. First operand 248 states and 253 transitions. Second operand 23 states.