/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=BIGGEST --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-01-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 15:34:25,215 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 15:34:25,220 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 15:34:25,244 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 15:34:25,245 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 15:34:25,246 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 15:34:25,247 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 15:34:25,249 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 15:34:25,251 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 15:34:25,252 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 15:34:25,253 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 15:34:25,254 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 15:34:25,254 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 15:34:25,255 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 15:34:25,256 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 15:34:25,257 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 15:34:25,258 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 15:34:25,259 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 15:34:25,260 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 15:34:25,262 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 15:34:25,264 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 15:34:25,265 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 15:34:25,266 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 15:34:25,267 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 15:34:25,269 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 15:34:25,269 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 15:34:25,270 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 15:34:25,271 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 15:34:25,271 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 15:34:25,272 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 15:34:25,272 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 15:34:25,273 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 15:34:25,274 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 15:34:25,275 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 15:34:25,276 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 15:34:25,276 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 15:34:25,277 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 15:34:25,277 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 15:34:25,277 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 15:34:25,278 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 15:34:25,279 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 15:34:25,280 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 [2020-10-12 15:34:25,303 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 15:34:25,304 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 15:34:25,305 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 15:34:25,305 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 15:34:25,305 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 15:34:25,306 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 15:34:25,306 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 15:34:25,306 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 15:34:25,306 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 15:34:25,307 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 15:34:25,307 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 15:34:25,307 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 15:34:25,307 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 15:34:25,307 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 15:34:25,308 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 15:34:25,308 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 15:34:25,308 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 15:34:25,308 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 15:34:25,308 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 15:34:25,309 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 15:34:25,309 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 15:34:25,309 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 15:34:25,309 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 15:34:25,309 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 15:34:25,310 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 15:34:25,310 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 15:34:25,310 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 15:34:25,310 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 15:34:25,310 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 15:34:25,311 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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 15:34:25,653 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 15:34:25,666 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 15:34:25,670 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 15:34:25,672 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 15:34:25,672 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 15:34:25,673 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/sll-01-1.i [2020-10-12 15:34:25,753 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a0198602b/15b72567da5e4607955f8ea4e70a4479/FLAGb28f79fcc [2020-10-12 15:34:26,287 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 15:34:26,288 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/forester-heap/sll-01-1.i [2020-10-12 15:34:26,308 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a0198602b/15b72567da5e4607955f8ea4e70a4479/FLAGb28f79fcc [2020-10-12 15:34:26,561 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a0198602b/15b72567da5e4607955f8ea4e70a4479 [2020-10-12 15:34:26,570 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 15:34:26,572 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 15:34:26,573 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 15:34:26,573 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 15:34:26,577 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 15:34:26,578 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 03:34:26" (1/1) ... [2020-10-12 15:34:26,582 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35272ab1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:34:26, skipping insertion in model container [2020-10-12 15:34:26,582 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 03:34:26" (1/1) ... [2020-10-12 15:34:26,591 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 15:34:26,658 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 15:34:27,076 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 15:34:27,084 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 15:34:27,144 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 15:34:27,202 INFO L208 MainTranslator]: Completed translation [2020-10-12 15:34:27,202 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:34:27 WrapperNode [2020-10-12 15:34:27,203 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 15:34:27,203 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 15:34:27,204 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 15:34:27,204 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 15:34:27,219 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:34:27" (1/1) ... [2020-10-12 15:34:27,220 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:34:27" (1/1) ... [2020-10-12 15:34:27,238 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:34:27" (1/1) ... [2020-10-12 15:34:27,239 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:34:27" (1/1) ... [2020-10-12 15:34:27,261 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:34:27" (1/1) ... [2020-10-12 15:34:27,274 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:34:27" (1/1) ... [2020-10-12 15:34:27,278 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:34:27" (1/1) ... [2020-10-12 15:34:27,285 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 15:34:27,286 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 15:34:27,289 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 15:34:27,289 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 15:34:27,291 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:34:27" (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 [2020-10-12 15:34:27,351 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 15:34:27,351 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 15:34:27,351 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 15:34:27,351 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-12 15:34:27,352 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-12 15:34:27,352 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-12 15:34:27,352 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-12 15:34:27,352 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-12 15:34:27,352 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-12 15:34:27,352 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-12 15:34:27,353 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-12 15:34:27,353 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-12 15:34:27,353 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-12 15:34:27,353 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-12 15:34:27,353 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-12 15:34:27,353 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-12 15:34:27,354 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-12 15:34:27,354 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-12 15:34:27,354 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-12 15:34:27,354 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-12 15:34:27,354 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-12 15:34:27,354 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-12 15:34:27,355 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-12 15:34:27,355 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-12 15:34:27,355 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-12 15:34:27,355 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-12 15:34:27,355 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-12 15:34:27,355 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-12 15:34:27,356 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-12 15:34:27,356 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-12 15:34:27,356 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-12 15:34:27,356 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-12 15:34:27,356 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-12 15:34:27,356 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-12 15:34:27,357 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-12 15:34:27,357 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-12 15:34:27,357 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-12 15:34:27,357 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-12 15:34:27,357 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-12 15:34:27,357 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-12 15:34:27,358 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-12 15:34:27,358 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-12 15:34:27,358 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-12 15:34:27,358 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-12 15:34:27,358 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-12 15:34:27,358 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-12 15:34:27,359 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-12 15:34:27,359 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-12 15:34:27,359 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-12 15:34:27,359 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-12 15:34:27,359 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-12 15:34:27,359 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-12 15:34:27,360 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-12 15:34:27,360 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-12 15:34:27,360 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-12 15:34:27,360 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-12 15:34:27,360 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-12 15:34:27,360 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-12 15:34:27,360 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-12 15:34:27,361 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-12 15:34:27,361 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-12 15:34:27,361 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-12 15:34:27,361 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-12 15:34:27,361 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-12 15:34:27,361 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-12 15:34:27,362 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-12 15:34:27,362 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-12 15:34:27,362 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-12 15:34:27,362 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-12 15:34:27,362 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-12 15:34:27,362 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-12 15:34:27,363 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-12 15:34:27,363 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-12 15:34:27,363 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-12 15:34:27,363 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-12 15:34:27,363 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-12 15:34:27,363 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-12 15:34:27,363 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-12 15:34:27,364 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-12 15:34:27,364 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-12 15:34:27,364 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-12 15:34:27,364 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-12 15:34:27,364 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-12 15:34:27,364 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-12 15:34:27,365 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-12 15:34:27,365 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-12 15:34:27,365 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-12 15:34:27,365 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-12 15:34:27,365 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-12 15:34:27,365 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-12 15:34:27,365 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-12 15:34:27,366 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-12 15:34:27,366 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-12 15:34:27,366 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-12 15:34:27,366 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-12 15:34:27,366 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-12 15:34:27,366 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-12 15:34:27,366 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-12 15:34:27,367 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-12 15:34:27,367 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-12 15:34:27,367 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-12 15:34:27,367 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-12 15:34:27,367 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-12 15:34:27,367 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-12 15:34:27,367 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-12 15:34:27,368 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-12 15:34:27,368 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 15:34:27,368 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 15:34:27,368 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 15:34:27,368 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-12 15:34:27,368 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-12 15:34:27,368 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-12 15:34:27,369 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-12 15:34:27,369 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 15:34:27,369 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 15:34:28,106 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 15:34:28,106 INFO L295 CfgBuilder]: Removed 30 assume(true) statements. [2020-10-12 15:34:28,111 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 03:34:28 BoogieIcfgContainer [2020-10-12 15:34:28,111 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 15:34:28,113 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 15:34:28,113 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 15:34:28,116 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 15:34:28,116 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 03:34:26" (1/3) ... [2020-10-12 15:34:28,117 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@663d85c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 03:34:28, skipping insertion in model container [2020-10-12 15:34:28,118 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:34:27" (2/3) ... [2020-10-12 15:34:28,118 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@663d85c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 03:34:28, skipping insertion in model container [2020-10-12 15:34:28,118 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 03:34:28" (3/3) ... [2020-10-12 15:34:28,120 INFO L109 eAbstractionObserver]: Analyzing ICFG sll-01-1.i [2020-10-12 15:34:28,132 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 15:34:28,140 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 13 error locations. [2020-10-12 15:34:28,155 INFO L251 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2020-10-12 15:34:28,183 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 15:34:28,183 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 15:34:28,183 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 15:34:28,183 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 15:34:28,184 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 15:34:28,184 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 15:34:28,184 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 15:34:28,184 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 15:34:28,210 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states. [2020-10-12 15:34:28,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-12 15:34:28,216 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:34:28,217 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:34:28,218 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:34:28,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:34:28,228 INFO L82 PathProgramCache]: Analyzing trace with hash -1861454184, now seen corresponding path program 1 times [2020-10-12 15:34:28,238 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:34:28,238 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [722045813] [2020-10-12 15:34:28,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:34:28,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:28,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:28,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:28,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-12 15:34:28,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:28,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-12 15:34:28,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:28,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:34:28,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:34:28,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 15:34:28,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-12 15:34:28,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:34:28,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:28,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:28,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:28,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:34:28,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:28,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-12 15:34:28,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:28,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:34:28,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:34:28,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:34:28,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:28,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:34:28,665 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [722045813] [2020-10-12 15:34:28,667 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:34:28,668 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 15:34:28,668 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448158867] [2020-10-12 15:34:28,674 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 15:34:28,674 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:34:28,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 15:34:28,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 15:34:28,692 INFO L87 Difference]: Start difference. First operand 88 states. Second operand 4 states. [2020-10-12 15:34:28,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:34:28,931 INFO L93 Difference]: Finished difference Result 186 states and 302 transitions. [2020-10-12 15:34:28,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-12 15:34:28,933 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-10-12 15:34:28,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:34:28,944 INFO L225 Difference]: With dead ends: 186 [2020-10-12 15:34:28,945 INFO L226 Difference]: Without dead ends: 99 [2020-10-12 15:34:28,949 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 15:34:28,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-10-12 15:34:28,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 81. [2020-10-12 15:34:28,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-12 15:34:28,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 90 transitions. [2020-10-12 15:34:28,997 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 90 transitions. Word has length 8 [2020-10-12 15:34:28,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:34:28,998 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 90 transitions. [2020-10-12 15:34:28,998 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 15:34:28,998 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 90 transitions. [2020-10-12 15:34:28,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-12 15:34:28,999 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:34:28,999 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:34:28,999 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 15:34:29,000 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:34:29,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:34:29,000 INFO L82 PathProgramCache]: Analyzing trace with hash 1461031906, now seen corresponding path program 1 times [2020-10-12 15:34:29,001 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:34:29,001 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1804138184] [2020-10-12 15:34:29,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:34:29,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:29,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:29,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:29,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:29,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-12 15:34:29,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:34:29,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-10-12 15:34:29,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:29,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 15:34:29,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 15:34:29,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-12 15:34:29,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:34:29,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:34:29,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:29,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:29,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:29,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:34:29,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:29,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 15:34:29,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:29,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:34:29,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:34:29,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:34:29,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 15:34:29,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:34:29,260 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1804138184] [2020-10-12 15:34:29,261 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:34:29,261 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 15:34:29,261 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502573619] [2020-10-12 15:34:29,264 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 15:34:29,264 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:34:29,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 15:34:29,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 15:34:29,265 INFO L87 Difference]: Start difference. First operand 81 states and 90 transitions. Second operand 5 states. [2020-10-12 15:34:29,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:34:29,521 INFO L93 Difference]: Finished difference Result 205 states and 227 transitions. [2020-10-12 15:34:29,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 15:34:29,522 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-10-12 15:34:29,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:34:29,524 INFO L225 Difference]: With dead ends: 205 [2020-10-12 15:34:29,524 INFO L226 Difference]: Without dead ends: 136 [2020-10-12 15:34:29,526 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 [2020-10-12 15:34:29,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-10-12 15:34:29,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 83. [2020-10-12 15:34:29,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-12 15:34:29,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 92 transitions. [2020-10-12 15:34:29,539 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 92 transitions. Word has length 14 [2020-10-12 15:34:29,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:34:29,540 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 92 transitions. [2020-10-12 15:34:29,540 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 15:34:29,540 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 92 transitions. [2020-10-12 15:34:29,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-12 15:34:29,541 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:34:29,541 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:34:29,541 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 15:34:29,541 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:34:29,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:34:29,542 INFO L82 PathProgramCache]: Analyzing trace with hash 1461033828, now seen corresponding path program 1 times [2020-10-12 15:34:29,542 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:34:29,542 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [918835952] [2020-10-12 15:34:29,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:34:29,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:29,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:29,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:29,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:29,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-12 15:34:29,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:34:29,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-12 15:34:29,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:29,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 15:34:29,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 15:34:29,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-12 15:34:29,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:29,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:34:29,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:29,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:29,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:29,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:34:29,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:29,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 15:34:29,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:29,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:34:29,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:34:29,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:34:29,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:34:29,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:34:29,651 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [918835952] [2020-10-12 15:34:29,651 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:34:29,652 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 15:34:29,652 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810548198] [2020-10-12 15:34:29,652 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 15:34:29,653 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:34:29,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 15:34:29,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 15:34:29,654 INFO L87 Difference]: Start difference. First operand 83 states and 92 transitions. Second operand 5 states. [2020-10-12 15:34:29,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:34:29,813 INFO L93 Difference]: Finished difference Result 83 states and 92 transitions. [2020-10-12 15:34:29,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 15:34:29,813 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-10-12 15:34:29,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:34:29,815 INFO L225 Difference]: With dead ends: 83 [2020-10-12 15:34:29,815 INFO L226 Difference]: Without dead ends: 81 [2020-10-12 15:34:29,816 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 15:34:29,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-10-12 15:34:29,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2020-10-12 15:34:29,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-12 15:34:29,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 90 transitions. [2020-10-12 15:34:29,830 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 90 transitions. Word has length 14 [2020-10-12 15:34:29,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:34:29,835 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 90 transitions. [2020-10-12 15:34:29,835 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 15:34:29,835 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 90 transitions. [2020-10-12 15:34:29,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-12 15:34:29,836 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:34:29,837 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:34:29,837 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 15:34:29,837 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:34:29,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:34:29,838 INFO L82 PathProgramCache]: Analyzing trace with hash -631612141, now seen corresponding path program 1 times [2020-10-12 15:34:29,838 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:34:29,839 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1314375746] [2020-10-12 15:34:29,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:34:29,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:29,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:29,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:29,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-12 15:34:29,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:29,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-12 15:34:29,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:29,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:34:29,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-12 15:34:29,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 15:34:29,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:34:30,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:34:30,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:30,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:30,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:30,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:34:30,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:30,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:34:30,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:30,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:34:30,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:34:30,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:34:30,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:30,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:34:30,022 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1314375746] [2020-10-12 15:34:30,022 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:34:30,023 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 15:34:30,023 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247101805] [2020-10-12 15:34:30,023 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 15:34:30,023 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:34:30,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 15:34:30,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 15:34:30,024 INFO L87 Difference]: Start difference. First operand 81 states and 90 transitions. Second operand 4 states. [2020-10-12 15:34:30,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:34:30,190 INFO L93 Difference]: Finished difference Result 84 states and 94 transitions. [2020-10-12 15:34:30,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-12 15:34:30,190 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-10-12 15:34:30,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:34:30,192 INFO L225 Difference]: With dead ends: 84 [2020-10-12 15:34:30,192 INFO L226 Difference]: Without dead ends: 80 [2020-10-12 15:34:30,193 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 15:34:30,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-12 15:34:30,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 77. [2020-10-12 15:34:30,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-12 15:34:30,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 86 transitions. [2020-10-12 15:34:30,213 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 86 transitions. Word has length 19 [2020-10-12 15:34:30,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:34:30,213 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 86 transitions. [2020-10-12 15:34:30,213 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 15:34:30,214 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 86 transitions. [2020-10-12 15:34:30,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-12 15:34:30,215 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:34:30,216 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] [2020-10-12 15:34:30,216 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 15:34:30,216 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:34:30,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:34:30,217 INFO L82 PathProgramCache]: Analyzing trace with hash 1894864309, now seen corresponding path program 1 times [2020-10-12 15:34:30,217 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:34:30,217 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1059494403] [2020-10-12 15:34:30,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:34:30,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:30,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:30,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:30,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:30,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-12 15:34:30,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:34:30,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-12 15:34:30,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:30,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 15:34:30,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-12 15:34:30,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-12 15:34:30,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 15:34:30,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:34:30,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:30,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:30,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:30,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:34:30,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:30,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 15:34:30,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:30,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:34:30,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:34:30,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:34:30,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:30,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:34:30,449 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1059494403] [2020-10-12 15:34:30,450 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:34:30,450 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 15:34:30,450 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872176872] [2020-10-12 15:34:30,451 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 15:34:30,452 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:34:30,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 15:34:30,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 15:34:30,452 INFO L87 Difference]: Start difference. First operand 77 states and 86 transitions. Second operand 5 states. [2020-10-12 15:34:30,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:34:30,641 INFO L93 Difference]: Finished difference Result 95 states and 107 transitions. [2020-10-12 15:34:30,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 15:34:30,642 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-10-12 15:34:30,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:34:30,643 INFO L225 Difference]: With dead ends: 95 [2020-10-12 15:34:30,643 INFO L226 Difference]: Without dead ends: 75 [2020-10-12 15:34:30,644 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 [2020-10-12 15:34:30,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-10-12 15:34:30,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 74. [2020-10-12 15:34:30,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-10-12 15:34:30,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 83 transitions. [2020-10-12 15:34:30,652 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 83 transitions. Word has length 20 [2020-10-12 15:34:30,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:34:30,653 INFO L479 AbstractCegarLoop]: Abstraction has 74 states and 83 transitions. [2020-10-12 15:34:30,653 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 15:34:30,653 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 83 transitions. [2020-10-12 15:34:30,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-12 15:34:30,654 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:34:30,654 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:34:30,654 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 15:34:30,654 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:34:30,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:34:30,655 INFO L82 PathProgramCache]: Analyzing trace with hash 1337316768, now seen corresponding path program 1 times [2020-10-12 15:34:30,655 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:34:30,655 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2072237162] [2020-10-12 15:34:30,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:34:30,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:30,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:30,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:30,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-12 15:34:30,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:30,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-12 15:34:30,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:30,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:34:30,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-12 15:34:30,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-12 15:34:30,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:30,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:34:30,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:30,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:30,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:30,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:34:30,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:30,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:34:30,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:30,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:34:30,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:34:30,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:34:30,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:30,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:34:30,729 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2072237162] [2020-10-12 15:34:30,730 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:34:30,730 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 15:34:30,730 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832717823] [2020-10-12 15:34:30,731 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 15:34:30,731 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:34:30,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 15:34:30,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 15:34:30,731 INFO L87 Difference]: Start difference. First operand 74 states and 83 transitions. Second operand 4 states. [2020-10-12 15:34:30,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:34:30,850 INFO L93 Difference]: Finished difference Result 98 states and 111 transitions. [2020-10-12 15:34:30,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-12 15:34:30,851 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2020-10-12 15:34:30,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:34:30,854 INFO L225 Difference]: With dead ends: 98 [2020-10-12 15:34:30,854 INFO L226 Difference]: Without dead ends: 96 [2020-10-12 15:34:30,855 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 15:34:30,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-12 15:34:30,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 76. [2020-10-12 15:34:30,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-10-12 15:34:30,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 86 transitions. [2020-10-12 15:34:30,864 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 86 transitions. Word has length 24 [2020-10-12 15:34:30,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:34:30,864 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 86 transitions. [2020-10-12 15:34:30,865 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 15:34:30,865 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 86 transitions. [2020-10-12 15:34:30,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-12 15:34:30,866 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:34:30,866 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:34:30,866 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 15:34:30,866 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:34:30,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:34:30,867 INFO L82 PathProgramCache]: Analyzing trace with hash -1492857654, now seen corresponding path program 1 times [2020-10-12 15:34:30,867 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:34:30,867 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1561406033] [2020-10-12 15:34:30,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:34:30,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:30,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:30,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:30,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:30,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:31,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:31,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-12 15:34:31,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 15:34:31,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 457 [2020-10-12 15:34:31,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:31,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 15:34:31,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 15:34:31,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 15:34:31,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:31,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:34:31,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:31,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:31,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:31,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:34:31,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:31,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:34:31,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:31,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:34:31,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:34:31,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:34:31,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:31,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:34:31,418 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1561406033] [2020-10-12 15:34:31,418 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:34:31,418 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 15:34:31,418 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478345367] [2020-10-12 15:34:31,419 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 15:34:31,419 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:34:31,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 15:34:31,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-12 15:34:31,420 INFO L87 Difference]: Start difference. First operand 76 states and 86 transitions. Second operand 7 states. [2020-10-12 15:34:31,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:34:31,736 INFO L93 Difference]: Finished difference Result 180 states and 204 transitions. [2020-10-12 15:34:31,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 15:34:31,737 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 25 [2020-10-12 15:34:31,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:34:31,738 INFO L225 Difference]: With dead ends: 180 [2020-10-12 15:34:31,738 INFO L226 Difference]: Without dead ends: 139 [2020-10-12 15:34:31,739 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-12 15:34:31,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-10-12 15:34:31,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 86. [2020-10-12 15:34:31,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-10-12 15:34:31,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 97 transitions. [2020-10-12 15:34:31,748 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 97 transitions. Word has length 25 [2020-10-12 15:34:31,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:34:31,748 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 97 transitions. [2020-10-12 15:34:31,748 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 15:34:31,748 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 97 transitions. [2020-10-12 15:34:31,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-12 15:34:31,749 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:34:31,749 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:34:31,750 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 15:34:31,750 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:34:31,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:34:31,751 INFO L82 PathProgramCache]: Analyzing trace with hash -1502808758, now seen corresponding path program 1 times [2020-10-12 15:34:31,751 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:34:31,751 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1137654931] [2020-10-12 15:34:31,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:34:31,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:31,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:31,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:31,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:31,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:32,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:32,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-12 15:34:32,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 15:34:32,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 267 [2020-10-12 15:34:32,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:32,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 15:34:32,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 15:34:32,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 15:34:32,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:32,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:34:32,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:32,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:32,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:32,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:34:32,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:32,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 15:34:32,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:32,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:34:32,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:34:32,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:34:32,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:32,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:34:32,105 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1137654931] [2020-10-12 15:34:32,105 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:34:32,105 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 15:34:32,105 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312326044] [2020-10-12 15:34:32,106 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 15:34:32,106 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:34:32,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 15:34:32,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-12 15:34:32,107 INFO L87 Difference]: Start difference. First operand 86 states and 97 transitions. Second operand 7 states. [2020-10-12 15:34:32,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:34:32,459 INFO L93 Difference]: Finished difference Result 191 states and 219 transitions. [2020-10-12 15:34:32,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 15:34:32,459 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 25 [2020-10-12 15:34:32,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:34:32,461 INFO L225 Difference]: With dead ends: 191 [2020-10-12 15:34:32,461 INFO L226 Difference]: Without dead ends: 150 [2020-10-12 15:34:32,462 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-12 15:34:32,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-10-12 15:34:32,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 91. [2020-10-12 15:34:32,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-12 15:34:32,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 103 transitions. [2020-10-12 15:34:32,471 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 103 transitions. Word has length 25 [2020-10-12 15:34:32,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:34:32,472 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 103 transitions. [2020-10-12 15:34:32,472 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 15:34:32,472 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 103 transitions. [2020-10-12 15:34:32,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-12 15:34:32,474 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:34:32,474 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:34:32,474 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 15:34:32,474 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:34:32,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:34:32,475 INFO L82 PathProgramCache]: Analyzing trace with hash -1632693981, now seen corresponding path program 1 times [2020-10-12 15:34:32,475 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:34:32,475 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1136644984] [2020-10-12 15:34:32,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:34:32,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:32,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:32,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:32,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:32,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-12 15:34:32,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:34:32,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-12 15:34:32,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:32,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 15:34:32,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-12 15:34:32,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-12 15:34:32,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:34:32,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:34:32,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:32,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:32,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:32,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:34:32,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:32,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:34:32,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:32,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:34:32,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:34:32,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:34:32,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:34:32,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:34:32,668 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1136644984] [2020-10-12 15:34:32,668 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:34:32,668 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 15:34:32,669 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100759050] [2020-10-12 15:34:32,669 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 15:34:32,669 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:34:32,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 15:34:32,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 15:34:32,670 INFO L87 Difference]: Start difference. First operand 91 states and 103 transitions. Second operand 5 states. [2020-10-12 15:34:32,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:34:32,902 INFO L93 Difference]: Finished difference Result 101 states and 116 transitions. [2020-10-12 15:34:32,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 15:34:32,903 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2020-10-12 15:34:32,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:34:32,904 INFO L225 Difference]: With dead ends: 101 [2020-10-12 15:34:32,905 INFO L226 Difference]: Without dead ends: 99 [2020-10-12 15:34:32,906 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 [2020-10-12 15:34:32,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-10-12 15:34:32,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 94. [2020-10-12 15:34:32,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-10-12 15:34:32,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 107 transitions. [2020-10-12 15:34:32,916 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 107 transitions. Word has length 27 [2020-10-12 15:34:32,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:34:32,917 INFO L479 AbstractCegarLoop]: Abstraction has 94 states and 107 transitions. [2020-10-12 15:34:32,917 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 15:34:32,917 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 107 transitions. [2020-10-12 15:34:32,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-12 15:34:32,919 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:34:32,919 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:34:32,919 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 15:34:32,919 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:34:32,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:34:32,920 INFO L82 PathProgramCache]: Analyzing trace with hash -1630846939, now seen corresponding path program 1 times [2020-10-12 15:34:32,920 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:34:32,920 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [507423331] [2020-10-12 15:34:32,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:34:32,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:32,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:33,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:33,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:33,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-12 15:34:33,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:34:33,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 251 [2020-10-12 15:34:33,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:33,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 15:34:33,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-12 15:34:33,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-12 15:34:33,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:33,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:34:33,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:33,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:33,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:33,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:34:33,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:33,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 15:34:33,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:33,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:34:33,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:34:33,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:34:33,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:34:33,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:34:33,276 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [507423331] [2020-10-12 15:34:33,277 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:34:33,277 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 15:34:33,277 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071126064] [2020-10-12 15:34:33,278 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 15:34:33,278 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:34:33,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 15:34:33,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-12 15:34:33,279 INFO L87 Difference]: Start difference. First operand 94 states and 107 transitions. Second operand 6 states. [2020-10-12 15:34:33,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:34:33,541 INFO L93 Difference]: Finished difference Result 157 states and 180 transitions. [2020-10-12 15:34:33,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 15:34:33,542 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 27 [2020-10-12 15:34:33,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:34:33,543 INFO L225 Difference]: With dead ends: 157 [2020-10-12 15:34:33,543 INFO L226 Difference]: Without dead ends: 97 [2020-10-12 15:34:33,544 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-12 15:34:33,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-10-12 15:34:33,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 91. [2020-10-12 15:34:33,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-12 15:34:33,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 103 transitions. [2020-10-12 15:34:33,553 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 103 transitions. Word has length 27 [2020-10-12 15:34:33,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:34:33,553 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 103 transitions. [2020-10-12 15:34:33,553 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 15:34:33,554 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 103 transitions. [2020-10-12 15:34:33,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-12 15:34:33,554 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:34:33,555 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:34:33,555 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 15:34:33,555 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:34:33,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:34:33,555 INFO L82 PathProgramCache]: Analyzing trace with hash 567478293, now seen corresponding path program 1 times [2020-10-12 15:34:33,556 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:34:33,556 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1154879180] [2020-10-12 15:34:33,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:34:33,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:33,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:33,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:33,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:33,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:33,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:34,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:34,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-12 15:34:34,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 15:34:34,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 490 [2020-10-12 15:34:34,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:34,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 15:34:34,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 15:34:34,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 15:34:34,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:34,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:34:34,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:34,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:34,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:34,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:34:34,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:34,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 15:34:34,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:34,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:34:34,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:34:34,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:34:34,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:34,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:34:34,347 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1154879180] [2020-10-12 15:34:34,348 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:34:34,348 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-12 15:34:34,348 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613000698] [2020-10-12 15:34:34,349 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 15:34:34,349 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:34:34,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 15:34:34,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-12 15:34:34,349 INFO L87 Difference]: Start difference. First operand 91 states and 103 transitions. Second operand 9 states. [2020-10-12 15:34:35,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:34:35,001 INFO L93 Difference]: Finished difference Result 203 states and 228 transitions. [2020-10-12 15:34:35,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 15:34:35,002 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 28 [2020-10-12 15:34:35,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:34:35,006 INFO L225 Difference]: With dead ends: 203 [2020-10-12 15:34:35,007 INFO L226 Difference]: Without dead ends: 201 [2020-10-12 15:34:35,007 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-10-12 15:34:35,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2020-10-12 15:34:35,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 96. [2020-10-12 15:34:35,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-10-12 15:34:35,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 109 transitions. [2020-10-12 15:34:35,021 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 109 transitions. Word has length 28 [2020-10-12 15:34:35,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:34:35,022 INFO L479 AbstractCegarLoop]: Abstraction has 96 states and 109 transitions. [2020-10-12 15:34:35,022 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 15:34:35,022 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 109 transitions. [2020-10-12 15:34:35,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-12 15:34:35,025 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:34:35,025 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:34:35,026 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 15:34:35,026 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:34:35,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:34:35,027 INFO L82 PathProgramCache]: Analyzing trace with hash 758661948, now seen corresponding path program 1 times [2020-10-12 15:34:35,027 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:34:35,027 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1412721304] [2020-10-12 15:34:35,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:34:35,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:35,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:35,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:35,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:35,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:35,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:35,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:35,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-12 15:34:35,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 15:34:35,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 624 [2020-10-12 15:34:35,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:35,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 15:34:35,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 15:34:35,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-12 15:34:35,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:35,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:34:35,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:35,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:35,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:35,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:34:35,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:35,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:34:35,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:35,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:34:35,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:34:35,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:34:35,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:35,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:34:35,818 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1412721304] [2020-10-12 15:34:35,818 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:34:35,818 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-12 15:34:35,818 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643939554] [2020-10-12 15:34:35,819 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 15:34:35,819 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:34:35,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 15:34:35,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-12 15:34:35,820 INFO L87 Difference]: Start difference. First operand 96 states and 109 transitions. Second operand 9 states. [2020-10-12 15:34:36,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:34:36,306 INFO L93 Difference]: Finished difference Result 201 states and 226 transitions. [2020-10-12 15:34:36,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 15:34:36,309 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 31 [2020-10-12 15:34:36,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:34:36,311 INFO L225 Difference]: With dead ends: 201 [2020-10-12 15:34:36,312 INFO L226 Difference]: Without dead ends: 199 [2020-10-12 15:34:36,313 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-10-12 15:34:36,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2020-10-12 15:34:36,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 99. [2020-10-12 15:34:36,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-12 15:34:36,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 112 transitions. [2020-10-12 15:34:36,323 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 112 transitions. Word has length 31 [2020-10-12 15:34:36,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:34:36,323 INFO L479 AbstractCegarLoop]: Abstraction has 99 states and 112 transitions. [2020-10-12 15:34:36,323 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 15:34:36,323 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 112 transitions. [2020-10-12 15:34:36,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-12 15:34:36,325 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:34:36,326 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:34:36,326 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 15:34:36,326 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:34:36,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:34:36,327 INFO L82 PathProgramCache]: Analyzing trace with hash -1719230162, now seen corresponding path program 1 times [2020-10-12 15:34:36,327 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:34:36,327 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1384360012] [2020-10-12 15:34:36,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:34:36,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:36,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:36,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:36,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:36,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:36,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:36,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:36,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:36,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:36,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:36,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-12 15:34:36,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-12 15:34:36,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 418 [2020-10-12 15:34:36,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:36,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 15:34:36,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-12 15:34:36,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-12 15:34:36,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:36,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:34:36,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:36,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:36,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:36,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:34:36,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:36,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:34:36,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:36,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:34:36,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:34:36,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:34:36,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:34:36,830 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:34:36,830 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1384360012] [2020-10-12 15:34:36,831 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:34:36,831 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 15:34:36,831 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668335101] [2020-10-12 15:34:36,832 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 15:34:36,832 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:34:36,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 15:34:36,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-12 15:34:36,833 INFO L87 Difference]: Start difference. First operand 99 states and 112 transitions. Second operand 7 states. [2020-10-12 15:34:37,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:34:37,206 INFO L93 Difference]: Finished difference Result 230 states and 262 transitions. [2020-10-12 15:34:37,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 15:34:37,209 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2020-10-12 15:34:37,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:34:37,210 INFO L225 Difference]: With dead ends: 230 [2020-10-12 15:34:37,210 INFO L226 Difference]: Without dead ends: 191 [2020-10-12 15:34:37,213 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-12 15:34:37,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2020-10-12 15:34:37,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 134. [2020-10-12 15:34:37,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-10-12 15:34:37,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 158 transitions. [2020-10-12 15:34:37,229 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 158 transitions. Word has length 33 [2020-10-12 15:34:37,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:34:37,229 INFO L479 AbstractCegarLoop]: Abstraction has 134 states and 158 transitions. [2020-10-12 15:34:37,229 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 15:34:37,229 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 158 transitions. [2020-10-12 15:34:37,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-12 15:34:37,230 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:34:37,230 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:34:37,231 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-12 15:34:37,231 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:34:37,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:34:37,231 INFO L82 PathProgramCache]: Analyzing trace with hash -999338862, now seen corresponding path program 1 times [2020-10-12 15:34:37,232 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:34:37,232 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1684110223] [2020-10-12 15:34:37,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:34:37,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:37,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:37,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:37,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-12 15:34:37,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:37,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-12 15:34:37,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:37,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 15:34:37,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:34:37,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-12 15:34:37,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:37,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:34:37,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:37,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:37,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:37,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:34:37,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:37,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:34:37,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:37,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:34:37,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:34:37,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:34:37,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:37,380 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:34:37,380 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1684110223] [2020-10-12 15:34:37,381 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:34:37,381 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 15:34:37,381 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28974736] [2020-10-12 15:34:37,381 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 15:34:37,382 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:34:37,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 15:34:37,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-12 15:34:37,382 INFO L87 Difference]: Start difference. First operand 134 states and 158 transitions. Second operand 6 states. [2020-10-12 15:34:37,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:34:37,650 INFO L93 Difference]: Finished difference Result 243 states and 285 transitions. [2020-10-12 15:34:37,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 15:34:37,650 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 33 [2020-10-12 15:34:37,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:34:37,652 INFO L225 Difference]: With dead ends: 243 [2020-10-12 15:34:37,652 INFO L226 Difference]: Without dead ends: 185 [2020-10-12 15:34:37,652 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-12 15:34:37,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-10-12 15:34:37,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 160. [2020-10-12 15:34:37,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-10-12 15:34:37,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 190 transitions. [2020-10-12 15:34:37,670 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 190 transitions. Word has length 33 [2020-10-12 15:34:37,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:34:37,671 INFO L479 AbstractCegarLoop]: Abstraction has 160 states and 190 transitions. [2020-10-12 15:34:37,671 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 15:34:37,671 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 190 transitions. [2020-10-12 15:34:37,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-12 15:34:37,672 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:34:37,672 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:34:37,673 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-12 15:34:37,673 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:34:37,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:34:37,673 INFO L82 PathProgramCache]: Analyzing trace with hash -1941174974, now seen corresponding path program 1 times [2020-10-12 15:34:37,673 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:34:37,674 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [690828874] [2020-10-12 15:34:37,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:34:37,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:37,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:37,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:37,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-12 15:34:37,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:37,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-12 15:34:37,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:37,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:34:37,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-12 15:34:37,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 15:34:37,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:37,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:34:37,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:37,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:37,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:37,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:34:37,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:37,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:34:37,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:37,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:34:37,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:34:37,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:34:37,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:37,756 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:34:37,756 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [690828874] [2020-10-12 15:34:37,756 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:34:37,756 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 15:34:37,757 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909960101] [2020-10-12 15:34:37,757 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 15:34:37,757 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:34:37,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 15:34:37,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 15:34:37,758 INFO L87 Difference]: Start difference. First operand 160 states and 190 transitions. Second operand 4 states. [2020-10-12 15:34:37,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:34:37,888 INFO L93 Difference]: Finished difference Result 209 states and 251 transitions. [2020-10-12 15:34:37,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-12 15:34:37,888 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 35 [2020-10-12 15:34:37,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:34:37,890 INFO L225 Difference]: With dead ends: 209 [2020-10-12 15:34:37,890 INFO L226 Difference]: Without dead ends: 207 [2020-10-12 15:34:37,893 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 15:34:37,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2020-10-12 15:34:37,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 196. [2020-10-12 15:34:37,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-10-12 15:34:37,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 233 transitions. [2020-10-12 15:34:37,913 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 233 transitions. Word has length 35 [2020-10-12 15:34:37,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:34:37,913 INFO L479 AbstractCegarLoop]: Abstraction has 196 states and 233 transitions. [2020-10-12 15:34:37,913 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 15:34:37,913 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 233 transitions. [2020-10-12 15:34:37,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-12 15:34:37,914 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:34:37,914 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:34:37,915 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-12 15:34:37,915 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:34:37,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:34:37,915 INFO L82 PathProgramCache]: Analyzing trace with hash 1766986308, now seen corresponding path program 1 times [2020-10-12 15:34:37,915 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:34:37,916 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1036900722] [2020-10-12 15:34:37,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:34:37,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:37,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:37,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:37,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-12 15:34:37,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:37,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-12 15:34:37,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:37,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:34:37,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-12 15:34:37,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-12 15:34:37,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:37,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:34:37,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:37,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:37,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:37,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:34:37,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:37,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:34:37,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:37,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:34:37,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:34:37,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:34:37,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:37,988 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:34:37,988 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1036900722] [2020-10-12 15:34:37,991 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:34:37,991 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 15:34:37,991 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967944849] [2020-10-12 15:34:37,992 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 15:34:37,992 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:34:37,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 15:34:37,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 15:34:37,993 INFO L87 Difference]: Start difference. First operand 196 states and 233 transitions. Second operand 4 states. [2020-10-12 15:34:38,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:34:38,114 INFO L93 Difference]: Finished difference Result 328 states and 396 transitions. [2020-10-12 15:34:38,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-12 15:34:38,115 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 35 [2020-10-12 15:34:38,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:34:38,116 INFO L225 Difference]: With dead ends: 328 [2020-10-12 15:34:38,116 INFO L226 Difference]: Without dead ends: 219 [2020-10-12 15:34:38,117 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 15:34:38,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2020-10-12 15:34:38,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 193. [2020-10-12 15:34:38,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2020-10-12 15:34:38,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 231 transitions. [2020-10-12 15:34:38,134 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 231 transitions. Word has length 35 [2020-10-12 15:34:38,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:34:38,134 INFO L479 AbstractCegarLoop]: Abstraction has 193 states and 231 transitions. [2020-10-12 15:34:38,134 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 15:34:38,135 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 231 transitions. [2020-10-12 15:34:38,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-12 15:34:38,135 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:34:38,135 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:34:38,136 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-12 15:34:38,136 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:34:38,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:34:38,136 INFO L82 PathProgramCache]: Analyzing trace with hash 930038423, now seen corresponding path program 1 times [2020-10-12 15:34:38,136 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:34:38,137 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [228672400] [2020-10-12 15:34:38,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:34:38,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:38,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:38,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:38,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:38,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-12 15:34:38,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:34:38,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-10-12 15:34:38,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:38,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 15:34:38,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-12 15:34:38,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-12 15:34:38,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:38,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:34:38,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:38,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:38,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:38,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:34:38,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:38,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:34:38,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:38,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:34:38,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:34:38,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:34:38,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:38,391 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:34:38,391 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [228672400] [2020-10-12 15:34:38,391 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:34:38,391 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 15:34:38,392 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826206255] [2020-10-12 15:34:38,392 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 15:34:38,392 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:34:38,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 15:34:38,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-12 15:34:38,393 INFO L87 Difference]: Start difference. First operand 193 states and 231 transitions. Second operand 7 states. [2020-10-12 15:34:38,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:34:38,806 INFO L93 Difference]: Finished difference Result 338 states and 398 transitions. [2020-10-12 15:34:38,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 15:34:38,806 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 36 [2020-10-12 15:34:38,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:34:38,809 INFO L225 Difference]: With dead ends: 338 [2020-10-12 15:34:38,809 INFO L226 Difference]: Without dead ends: 307 [2020-10-12 15:34:38,810 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-12 15:34:38,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2020-10-12 15:34:38,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 224. [2020-10-12 15:34:38,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2020-10-12 15:34:38,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 270 transitions. [2020-10-12 15:34:38,829 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 270 transitions. Word has length 36 [2020-10-12 15:34:38,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:34:38,829 INFO L479 AbstractCegarLoop]: Abstraction has 224 states and 270 transitions. [2020-10-12 15:34:38,829 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 15:34:38,829 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 270 transitions. [2020-10-12 15:34:38,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-12 15:34:38,830 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:34:38,830 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:34:38,830 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-12 15:34:38,831 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:34:38,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:34:38,831 INFO L82 PathProgramCache]: Analyzing trace with hash -928805065, now seen corresponding path program 1 times [2020-10-12 15:34:38,831 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:34:38,831 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [226077353] [2020-10-12 15:34:38,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:34:38,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:38,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:38,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:38,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:38,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:38,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:39,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:39,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:39,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:39,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:39,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:39,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:39,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:39,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:42,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:42,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-12 15:34:42,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-12 15:34:42,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3425 [2020-10-12 15:34:42,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:42,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 15:34:42,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 15:34:42,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-12 15:34:42,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:42,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:34:42,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:42,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:42,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:42,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:34:42,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:42,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:34:42,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:42,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:34:42,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:34:42,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:34:42,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:42,470 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:34:42,470 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [226077353] [2020-10-12 15:34:42,471 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:34:42,471 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 15:34:42,474 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15747985] [2020-10-12 15:34:42,476 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 15:34:42,476 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:34:42,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 15:34:42,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-12 15:34:42,477 INFO L87 Difference]: Start difference. First operand 224 states and 270 transitions. Second operand 9 states. [2020-10-12 15:34:42,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:34:42,879 INFO L93 Difference]: Finished difference Result 263 states and 305 transitions. [2020-10-12 15:34:42,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 15:34:42,879 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 39 [2020-10-12 15:34:42,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:34:42,881 INFO L225 Difference]: With dead ends: 263 [2020-10-12 15:34:42,881 INFO L226 Difference]: Without dead ends: 218 [2020-10-12 15:34:42,883 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2020-10-12 15:34:42,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-10-12 15:34:42,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 205. [2020-10-12 15:34:42,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2020-10-12 15:34:42,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 243 transitions. [2020-10-12 15:34:42,899 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 243 transitions. Word has length 39 [2020-10-12 15:34:42,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:34:42,900 INFO L479 AbstractCegarLoop]: Abstraction has 205 states and 243 transitions. [2020-10-12 15:34:42,900 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 15:34:42,900 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 243 transitions. [2020-10-12 15:34:42,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-12 15:34:42,900 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:34:42,901 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:34:42,901 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-12 15:34:42,901 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:34:42,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:34:42,901 INFO L82 PathProgramCache]: Analyzing trace with hash 1979917628, now seen corresponding path program 1 times [2020-10-12 15:34:42,902 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:34:42,902 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1867182792] [2020-10-12 15:34:42,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:34:42,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:42,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:42,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:43,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:43,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:43,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:43,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:44,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:44,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:44,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:44,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:45,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:45,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:45,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:45,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-12 15:34:45,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-12 15:34:45,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2747 [2020-10-12 15:34:45,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:45,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 15:34:45,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 15:34:45,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-12 15:34:45,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:46,013 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 36 [2020-10-12 15:34:46,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:34:46,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:46,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:46,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:46,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:34:46,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:46,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:34:46,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:46,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:34:46,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:34:46,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:34:46,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:46,197 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:34:46,198 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1867182792] [2020-10-12 15:34:46,198 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:34:46,198 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-12 15:34:46,199 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293312392] [2020-10-12 15:34:46,200 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 15:34:46,200 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:34:46,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 15:34:46,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-10-12 15:34:46,201 INFO L87 Difference]: Start difference. First operand 205 states and 243 transitions. Second operand 12 states. [2020-10-12 15:34:47,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:34:47,523 INFO L93 Difference]: Finished difference Result 483 states and 578 transitions. [2020-10-12 15:34:47,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-12 15:34:47,524 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 40 [2020-10-12 15:34:47,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:34:47,526 INFO L225 Difference]: With dead ends: 483 [2020-10-12 15:34:47,526 INFO L226 Difference]: Without dead ends: 481 [2020-10-12 15:34:47,527 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=147, Invalid=453, Unknown=0, NotChecked=0, Total=600 [2020-10-12 15:34:47,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2020-10-12 15:34:47,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 246. [2020-10-12 15:34:47,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 246 states. [2020-10-12 15:34:47,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 293 transitions. [2020-10-12 15:34:47,550 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 293 transitions. Word has length 40 [2020-10-12 15:34:47,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:34:47,550 INFO L479 AbstractCegarLoop]: Abstraction has 246 states and 293 transitions. [2020-10-12 15:34:47,550 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 15:34:47,551 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 293 transitions. [2020-10-12 15:34:47,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-12 15:34:47,551 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:34:47,552 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:34:47,552 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-12 15:34:47,552 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:34:47,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:34:47,552 INFO L82 PathProgramCache]: Analyzing trace with hash -2026576836, now seen corresponding path program 1 times [2020-10-12 15:34:47,553 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:34:47,553 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [689412780] [2020-10-12 15:34:47,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:34:47,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:47,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:47,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:47,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-12 15:34:47,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:47,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 220 [2020-10-12 15:34:47,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:47,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 15:34:47,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:34:47,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-12 15:34:47,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:34:48,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:34:48,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:48,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:48,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:48,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:34:48,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:48,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:34:48,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:48,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:34:48,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:34:48,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:34:48,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:48,125 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:34:48,125 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [689412780] [2020-10-12 15:34:48,125 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:34:48,126 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-12 15:34:48,126 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737949474] [2020-10-12 15:34:48,126 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 15:34:48,126 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:34:48,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 15:34:48,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-12 15:34:48,127 INFO L87 Difference]: Start difference. First operand 246 states and 293 transitions. Second operand 11 states. [2020-10-12 15:34:49,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:34:49,625 INFO L93 Difference]: Finished difference Result 486 states and 572 transitions. [2020-10-12 15:34:49,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-12 15:34:49,626 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 40 [2020-10-12 15:34:49,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:34:49,629 INFO L225 Difference]: With dead ends: 486 [2020-10-12 15:34:49,630 INFO L226 Difference]: Without dead ends: 484 [2020-10-12 15:34:49,631 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=137, Invalid=415, Unknown=0, NotChecked=0, Total=552 [2020-10-12 15:34:49,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 484 states. [2020-10-12 15:34:49,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 484 to 268. [2020-10-12 15:34:49,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 268 states. [2020-10-12 15:34:49,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 319 transitions. [2020-10-12 15:34:49,662 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 319 transitions. Word has length 40 [2020-10-12 15:34:49,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:34:49,663 INFO L479 AbstractCegarLoop]: Abstraction has 268 states and 319 transitions. [2020-10-12 15:34:49,663 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 15:34:49,663 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 319 transitions. [2020-10-12 15:34:49,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-12 15:34:49,664 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:34:49,664 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:34:49,664 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-12 15:34:49,665 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:34:49,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:34:49,665 INFO L82 PathProgramCache]: Analyzing trace with hash 1295314108, now seen corresponding path program 1 times [2020-10-12 15:34:49,666 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:34:49,666 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2129149729] [2020-10-12 15:34:49,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:34:49,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:49,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:50,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:50,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-12 15:34:50,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:50,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 361 [2020-10-12 15:34:50,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:50,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 15:34:50,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:34:50,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-12 15:34:50,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:50,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:34:50,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:50,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:50,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:50,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:34:50,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:50,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:34:50,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:50,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:34:50,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:34:50,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:34:50,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:34:50,396 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:34:50,396 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2129149729] [2020-10-12 15:34:50,397 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:34:50,397 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-12 15:34:50,397 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373899176] [2020-10-12 15:34:50,398 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 15:34:50,399 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:34:50,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 15:34:50,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-10-12 15:34:50,399 INFO L87 Difference]: Start difference. First operand 268 states and 319 transitions. Second operand 11 states. [2020-10-12 15:34:51,216 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 63 [2020-10-12 15:34:51,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:34:51,628 INFO L93 Difference]: Finished difference Result 495 states and 586 transitions. [2020-10-12 15:34:51,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-12 15:34:51,628 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 40 [2020-10-12 15:34:51,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:34:51,632 INFO L225 Difference]: With dead ends: 495 [2020-10-12 15:34:51,632 INFO L226 Difference]: Without dead ends: 493 [2020-10-12 15:34:51,633 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2020-10-12 15:34:51,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493 states. [2020-10-12 15:34:51,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493 to 276. [2020-10-12 15:34:51,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 276 states. [2020-10-12 15:34:51,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 328 transitions. [2020-10-12 15:34:51,657 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 328 transitions. Word has length 40 [2020-10-12 15:34:51,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:34:51,657 INFO L479 AbstractCegarLoop]: Abstraction has 276 states and 328 transitions. [2020-10-12 15:34:51,658 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 15:34:51,658 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 328 transitions. [2020-10-12 15:34:51,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-12 15:34:51,658 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:34:51,659 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:34:51,659 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-12 15:34:51,659 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:34:51,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:34:51,659 INFO L82 PathProgramCache]: Analyzing trace with hash 944292021, now seen corresponding path program 1 times [2020-10-12 15:34:51,660 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:34:51,660 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1399756035] [2020-10-12 15:34:51,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:34:51,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:51,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:51,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:51,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:51,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:52,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:52,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:52,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:52,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:52,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:52,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:53,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:53,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:53,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:53,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:53,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:53,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:53,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:54,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:56,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:56,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-12 15:34:56,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-12 15:34:56,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4657 [2020-10-12 15:34:56,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:56,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 15:34:56,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:34:56,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-12 15:34:56,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:56,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:34:56,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:56,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:56,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:56,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:34:56,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:56,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:34:56,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:56,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:34:56,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:34:56,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:34:56,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:56,661 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:34:56,661 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1399756035] [2020-10-12 15:34:56,661 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:34:56,662 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-12 15:34:56,662 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335371907] [2020-10-12 15:34:56,662 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 15:34:56,662 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:34:56,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 15:34:56,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-10-12 15:34:56,663 INFO L87 Difference]: Start difference. First operand 276 states and 328 transitions. Second operand 12 states. [2020-10-12 15:34:57,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:34:57,968 INFO L93 Difference]: Finished difference Result 454 states and 536 transitions. [2020-10-12 15:34:57,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-12 15:34:57,971 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 43 [2020-10-12 15:34:57,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:34:57,973 INFO L225 Difference]: With dead ends: 454 [2020-10-12 15:34:57,973 INFO L226 Difference]: Without dead ends: 364 [2020-10-12 15:34:57,974 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=125, Invalid=475, Unknown=0, NotChecked=0, Total=600 [2020-10-12 15:34:57,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2020-10-12 15:34:57,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 276. [2020-10-12 15:34:57,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 276 states. [2020-10-12 15:34:57,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 328 transitions. [2020-10-12 15:34:57,996 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 328 transitions. Word has length 43 [2020-10-12 15:34:57,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:34:57,996 INFO L479 AbstractCegarLoop]: Abstraction has 276 states and 328 transitions. [2020-10-12 15:34:57,997 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 15:34:57,997 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 328 transitions. [2020-10-12 15:34:57,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-12 15:34:57,998 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:34:57,998 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:34:57,998 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-12 15:34:57,998 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:34:57,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:34:57,999 INFO L82 PathProgramCache]: Analyzing trace with hash 608870837, now seen corresponding path program 1 times [2020-10-12 15:34:57,999 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:34:57,999 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1086399570] [2020-10-12 15:34:57,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:34:58,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:58,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:58,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:58,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:58,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:58,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-12 15:34:58,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 15:34:58,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 635 [2020-10-12 15:34:58,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:58,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 15:34:58,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 15:34:58,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-12 15:34:58,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:59,019 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 59 [2020-10-12 15:34:59,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:34:59,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:34:59,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:34:59,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:34:59,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:34:59,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:34:59,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:34:59,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:34:59,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:34:59,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:34:59,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:34:59,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:34:59,351 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:34:59,351 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1086399570] [2020-10-12 15:34:59,351 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:34:59,351 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-12 15:34:59,352 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111879246] [2020-10-12 15:34:59,352 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 15:34:59,352 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:34:59,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 15:34:59,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-12 15:34:59,353 INFO L87 Difference]: Start difference. First operand 276 states and 328 transitions. Second operand 11 states. [2020-10-12 15:34:59,692 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 78 [2020-10-12 15:35:00,062 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 90 [2020-10-12 15:35:00,322 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 87 [2020-10-12 15:35:00,791 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 91 [2020-10-12 15:35:01,238 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 57 [2020-10-12 15:35:01,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:35:01,664 INFO L93 Difference]: Finished difference Result 459 states and 540 transitions. [2020-10-12 15:35:01,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-12 15:35:01,665 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 43 [2020-10-12 15:35:01,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:35:01,668 INFO L225 Difference]: With dead ends: 459 [2020-10-12 15:35:01,668 INFO L226 Difference]: Without dead ends: 457 [2020-10-12 15:35:01,669 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=142, Invalid=458, Unknown=0, NotChecked=0, Total=600 [2020-10-12 15:35:01,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 457 states. [2020-10-12 15:35:01,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 457 to 310. [2020-10-12 15:35:01,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 310 states. [2020-10-12 15:35:01,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 366 transitions. [2020-10-12 15:35:01,693 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 366 transitions. Word has length 43 [2020-10-12 15:35:01,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:35:01,693 INFO L479 AbstractCegarLoop]: Abstraction has 310 states and 366 transitions. [2020-10-12 15:35:01,693 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 15:35:01,694 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 366 transitions. [2020-10-12 15:35:01,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-12 15:35:01,694 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:35:01,695 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:35:01,695 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-12 15:35:01,695 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:35:01,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:35:01,695 INFO L82 PathProgramCache]: Analyzing trace with hash 938403788, now seen corresponding path program 1 times [2020-10-12 15:35:01,696 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:35:01,696 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [486799346] [2020-10-12 15:35:01,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:35:01,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:35:01,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:01,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:01,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:01,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:01,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:01,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:02,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:03,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:03,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:05,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:35:05,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-12 15:35:05,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-12 15:35:05,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3471 [2020-10-12 15:35:05,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:35:05,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 15:35:05,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 15:35:05,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-12 15:35:05,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:35:05,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:35:05,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:35:05,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:05,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:35:05,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:35:05,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:35:05,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:35:05,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:35:05,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:35:05,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:35:05,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:35:05,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:35:05,322 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:35:05,323 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [486799346] [2020-10-12 15:35:05,323 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:35:05,323 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-12 15:35:05,324 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676944860] [2020-10-12 15:35:05,324 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 15:35:05,324 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:35:05,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 15:35:05,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-12 15:35:05,325 INFO L87 Difference]: Start difference. First operand 310 states and 366 transitions. Second operand 9 states. [2020-10-12 15:35:05,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:35:05,803 INFO L93 Difference]: Finished difference Result 359 states and 419 transitions. [2020-10-12 15:35:05,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 15:35:05,804 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 44 [2020-10-12 15:35:05,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:35:05,807 INFO L225 Difference]: With dead ends: 359 [2020-10-12 15:35:05,807 INFO L226 Difference]: Without dead ends: 357 [2020-10-12 15:35:05,808 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2020-10-12 15:35:05,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2020-10-12 15:35:05,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 316. [2020-10-12 15:35:05,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 316 states. [2020-10-12 15:35:05,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 372 transitions. [2020-10-12 15:35:05,831 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 372 transitions. Word has length 44 [2020-10-12 15:35:05,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:35:05,832 INFO L479 AbstractCegarLoop]: Abstraction has 316 states and 372 transitions. [2020-10-12 15:35:05,832 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 15:35:05,832 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 372 transitions. [2020-10-12 15:35:05,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-12 15:35:05,833 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:35:05,833 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:35:05,833 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-12 15:35:05,833 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:35:05,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:35:05,834 INFO L82 PathProgramCache]: Analyzing trace with hash -1122193205, now seen corresponding path program 1 times [2020-10-12 15:35:05,834 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:35:05,834 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [985743555] [2020-10-12 15:35:05,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:35:05,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:35:05,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:05,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:05,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:06,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:06,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:35:06,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-12 15:35:06,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 15:35:06,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 270 [2020-10-12 15:35:06,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:35:06,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 15:35:06,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:35:06,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-12 15:35:06,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:35:06,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:35:06,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:35:06,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:06,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:35:06,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:35:06,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:35:06,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:35:06,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:35:06,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:35:06,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:35:06,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:35:06,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:35:06,277 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:35:06,277 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [985743555] [2020-10-12 15:35:06,277 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:35:06,278 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 15:35:06,278 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977252512] [2020-10-12 15:35:06,278 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 15:35:06,278 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:35:06,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 15:35:06,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-12 15:35:06,279 INFO L87 Difference]: Start difference. First operand 316 states and 372 transitions. Second operand 9 states. [2020-10-12 15:35:07,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:35:07,197 INFO L93 Difference]: Finished difference Result 611 states and 724 transitions. [2020-10-12 15:35:07,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-12 15:35:07,198 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 45 [2020-10-12 15:35:07,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:35:07,200 INFO L225 Difference]: With dead ends: 611 [2020-10-12 15:35:07,200 INFO L226 Difference]: Without dead ends: 531 [2020-10-12 15:35:07,201 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=87, Invalid=293, Unknown=0, NotChecked=0, Total=380 [2020-10-12 15:35:07,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 531 states. [2020-10-12 15:35:07,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 531 to 414. [2020-10-12 15:35:07,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 414 states. [2020-10-12 15:35:07,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 490 transitions. [2020-10-12 15:35:07,233 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 490 transitions. Word has length 45 [2020-10-12 15:35:07,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:35:07,233 INFO L479 AbstractCegarLoop]: Abstraction has 414 states and 490 transitions. [2020-10-12 15:35:07,234 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 15:35:07,234 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 490 transitions. [2020-10-12 15:35:07,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-12 15:35:07,235 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:35:07,235 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:35:07,235 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-12 15:35:07,235 INFO L427 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:35:07,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:35:07,236 INFO L82 PathProgramCache]: Analyzing trace with hash 944633931, now seen corresponding path program 1 times [2020-10-12 15:35:07,236 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:35:07,236 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2140315568] [2020-10-12 15:35:07,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:35:07,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:35:07,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:07,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:07,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:07,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:07,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:35:07,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-12 15:35:07,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 15:35:07,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 374 [2020-10-12 15:35:07,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:35:07,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 15:35:07,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:35:07,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-12 15:35:07,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:35:07,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:35:07,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:35:07,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:07,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:35:07,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:35:07,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:35:07,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:35:07,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:35:07,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:35:07,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:35:07,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:35:07,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:35:07,927 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:35:07,927 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2140315568] [2020-10-12 15:35:07,928 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:35:07,928 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 15:35:07,928 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140587306] [2020-10-12 15:35:07,928 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 15:35:07,928 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:35:07,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 15:35:07,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-12 15:35:07,929 INFO L87 Difference]: Start difference. First operand 414 states and 490 transitions. Second operand 10 states. [2020-10-12 15:35:09,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:35:09,131 INFO L93 Difference]: Finished difference Result 682 states and 805 transitions. [2020-10-12 15:35:09,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-12 15:35:09,132 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 45 [2020-10-12 15:35:09,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:35:09,135 INFO L225 Difference]: With dead ends: 682 [2020-10-12 15:35:09,135 INFO L226 Difference]: Without dead ends: 680 [2020-10-12 15:35:09,137 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2020-10-12 15:35:09,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 680 states. [2020-10-12 15:35:09,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 680 to 456. [2020-10-12 15:35:09,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 456 states. [2020-10-12 15:35:09,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 456 states to 456 states and 543 transitions. [2020-10-12 15:35:09,183 INFO L78 Accepts]: Start accepts. Automaton has 456 states and 543 transitions. Word has length 45 [2020-10-12 15:35:09,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:35:09,184 INFO L479 AbstractCegarLoop]: Abstraction has 456 states and 543 transitions. [2020-10-12 15:35:09,184 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 15:35:09,184 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states and 543 transitions. [2020-10-12 15:35:09,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-12 15:35:09,185 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:35:09,185 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:35:09,185 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-12 15:35:09,185 INFO L427 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:35:09,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:35:09,187 INFO L82 PathProgramCache]: Analyzing trace with hash 49320255, now seen corresponding path program 1 times [2020-10-12 15:35:09,187 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:35:09,187 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2022880833] [2020-10-12 15:35:09,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:35:09,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:35:09,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:09,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:09,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:09,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:09,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:09,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:09,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:09,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:10,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:35:10,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-12 15:35:10,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-12 15:35:10,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1338 [2020-10-12 15:35:10,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:35:10,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 15:35:10,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 15:35:10,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-12 15:35:10,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:35:10,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:35:10,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:35:10,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:10,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:35:10,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:35:10,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:35:10,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:35:10,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:35:10,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:35:10,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:35:10,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:35:10,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:35:10,723 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:35:10,723 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2022880833] [2020-10-12 15:35:10,723 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:35:10,723 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 15:35:10,724 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824569285] [2020-10-12 15:35:10,724 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 15:35:10,724 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:35:10,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 15:35:10,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-12 15:35:10,725 INFO L87 Difference]: Start difference. First operand 456 states and 543 transitions. Second operand 9 states. [2020-10-12 15:35:11,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:35:11,248 INFO L93 Difference]: Finished difference Result 477 states and 564 transitions. [2020-10-12 15:35:11,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-12 15:35:11,249 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 47 [2020-10-12 15:35:11,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:35:11,251 INFO L225 Difference]: With dead ends: 477 [2020-10-12 15:35:11,251 INFO L226 Difference]: Without dead ends: 446 [2020-10-12 15:35:11,252 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2020-10-12 15:35:11,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446 states. [2020-10-12 15:35:11,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446 to 430. [2020-10-12 15:35:11,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 430 states. [2020-10-12 15:35:11,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 516 transitions. [2020-10-12 15:35:11,285 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 516 transitions. Word has length 47 [2020-10-12 15:35:11,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:35:11,286 INFO L479 AbstractCegarLoop]: Abstraction has 430 states and 516 transitions. [2020-10-12 15:35:11,286 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 15:35:11,286 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 516 transitions. [2020-10-12 15:35:11,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-12 15:35:11,287 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:35:11,287 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:35:11,287 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-12 15:35:11,287 INFO L427 AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:35:11,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:35:11,288 INFO L82 PathProgramCache]: Analyzing trace with hash 967827270, now seen corresponding path program 1 times [2020-10-12 15:35:11,288 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:35:11,288 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1966214629] [2020-10-12 15:35:11,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:35:11,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:35:11,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:11,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:11,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:11,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:11,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:35:11,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-12 15:35:11,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 15:35:11,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 574 [2020-10-12 15:35:11,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:35:11,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 15:35:11,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:35:11,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-12 15:35:11,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:35:12,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:35:12,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:35:12,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:12,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:35:12,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:35:12,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:35:12,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:35:12,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:35:12,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:35:12,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:35:12,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:35:12,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:35:12,156 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:35:12,157 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1966214629] [2020-10-12 15:35:12,157 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:35:12,157 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 15:35:12,157 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216477280] [2020-10-12 15:35:12,157 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 15:35:12,157 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:35:12,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 15:35:12,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-12 15:35:12,158 INFO L87 Difference]: Start difference. First operand 430 states and 516 transitions. Second operand 10 states. [2020-10-12 15:35:13,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:35:13,198 INFO L93 Difference]: Finished difference Result 637 states and 757 transitions. [2020-10-12 15:35:13,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-12 15:35:13,198 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 48 [2020-10-12 15:35:13,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:35:13,201 INFO L225 Difference]: With dead ends: 637 [2020-10-12 15:35:13,201 INFO L226 Difference]: Without dead ends: 635 [2020-10-12 15:35:13,202 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2020-10-12 15:35:13,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 635 states. [2020-10-12 15:35:13,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 635 to 436. [2020-10-12 15:35:13,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 436 states. [2020-10-12 15:35:13,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 522 transitions. [2020-10-12 15:35:13,238 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 522 transitions. Word has length 48 [2020-10-12 15:35:13,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:35:13,238 INFO L479 AbstractCegarLoop]: Abstraction has 436 states and 522 transitions. [2020-10-12 15:35:13,238 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 15:35:13,238 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 522 transitions. [2020-10-12 15:35:13,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-12 15:35:13,239 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:35:13,239 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:35:13,239 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-12 15:35:13,240 INFO L427 AbstractCegarLoop]: === Iteration 29 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:35:13,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:35:13,240 INFO L82 PathProgramCache]: Analyzing trace with hash -1636282852, now seen corresponding path program 2 times [2020-10-12 15:35:13,240 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:35:13,240 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [226069641] [2020-10-12 15:35:13,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:35:13,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:35:13,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:13,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:13,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:13,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:35:13,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-12 15:35:13,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 15:35:13,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 342 [2020-10-12 15:35:13,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:35:13,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 15:35:13,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:35:13,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-12 15:35:13,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:35:13,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:35:13,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:35:13,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:13,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:35:13,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:35:13,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:35:13,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:35:13,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:35:13,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:35:13,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:35:13,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:35:13,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:35:13,846 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:35:13,847 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [226069641] [2020-10-12 15:35:13,847 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:35:13,847 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 15:35:13,847 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377148122] [2020-10-12 15:35:13,848 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 15:35:13,848 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:35:13,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 15:35:13,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-12 15:35:13,849 INFO L87 Difference]: Start difference. First operand 436 states and 522 transitions. Second operand 10 states. [2020-10-12 15:35:14,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:35:14,621 INFO L93 Difference]: Finished difference Result 641 states and 768 transitions. [2020-10-12 15:35:14,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-12 15:35:14,622 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 50 [2020-10-12 15:35:14,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:35:14,624 INFO L225 Difference]: With dead ends: 641 [2020-10-12 15:35:14,624 INFO L226 Difference]: Without dead ends: 561 [2020-10-12 15:35:14,625 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2020-10-12 15:35:14,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2020-10-12 15:35:14,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 520. [2020-10-12 15:35:14,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 520 states. [2020-10-12 15:35:14,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 520 states to 520 states and 631 transitions. [2020-10-12 15:35:14,668 INFO L78 Accepts]: Start accepts. Automaton has 520 states and 631 transitions. Word has length 50 [2020-10-12 15:35:14,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:35:14,668 INFO L479 AbstractCegarLoop]: Abstraction has 520 states and 631 transitions. [2020-10-12 15:35:14,669 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 15:35:14,669 INFO L276 IsEmpty]: Start isEmpty. Operand 520 states and 631 transitions. [2020-10-12 15:35:14,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-12 15:35:14,670 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:35:14,670 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:35:14,670 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-12 15:35:14,671 INFO L427 AbstractCegarLoop]: === Iteration 30 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:35:14,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:35:14,671 INFO L82 PathProgramCache]: Analyzing trace with hash -1026530128, now seen corresponding path program 1 times [2020-10-12 15:35:14,671 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:35:14,671 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2114864778] [2020-10-12 15:35:14,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:35:14,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:35:14,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:14,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:14,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:15,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:15,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:15,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:15,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:15,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:15,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:15,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:16,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:16,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:35:16,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-12 15:35:16,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-12 15:35:16,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2299 [2020-10-12 15:35:16,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:35:16,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 15:35:16,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:35:16,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-12 15:35:16,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:35:17,306 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 35 [2020-10-12 15:35:17,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:35:17,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:35:17,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:17,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:35:17,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:35:17,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:35:17,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:35:17,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:35:17,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:35:17,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:35:17,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:35:17,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:35:17,708 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:35:17,709 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2114864778] [2020-10-12 15:35:17,709 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:35:17,709 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-12 15:35:17,710 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863155040] [2020-10-12 15:35:17,710 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 15:35:17,710 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:35:17,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 15:35:17,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-10-12 15:35:17,711 INFO L87 Difference]: Start difference. First operand 520 states and 631 transitions. Second operand 12 states. [2020-10-12 15:35:18,749 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 89 [2020-10-12 15:35:18,968 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 60 [2020-10-12 15:35:19,441 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 72 [2020-10-12 15:35:19,687 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 92 [2020-10-12 15:35:20,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:35:20,170 INFO L93 Difference]: Finished difference Result 588 states and 699 transitions. [2020-10-12 15:35:20,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-12 15:35:20,170 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 51 [2020-10-12 15:35:20,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:35:20,172 INFO L225 Difference]: With dead ends: 588 [2020-10-12 15:35:20,173 INFO L226 Difference]: Without dead ends: 586 [2020-10-12 15:35:20,173 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=188, Invalid=624, Unknown=0, NotChecked=0, Total=812 [2020-10-12 15:35:20,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 586 states. [2020-10-12 15:35:20,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 586 to 480. [2020-10-12 15:35:20,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 480 states. [2020-10-12 15:35:20,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 480 states to 480 states and 581 transitions. [2020-10-12 15:35:20,214 INFO L78 Accepts]: Start accepts. Automaton has 480 states and 581 transitions. Word has length 51 [2020-10-12 15:35:20,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:35:20,215 INFO L479 AbstractCegarLoop]: Abstraction has 480 states and 581 transitions. [2020-10-12 15:35:20,215 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 15:35:20,215 INFO L276 IsEmpty]: Start isEmpty. Operand 480 states and 581 transitions. [2020-10-12 15:35:20,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-12 15:35:20,216 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:35:20,216 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:35:20,216 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-12 15:35:20,216 INFO L427 AbstractCegarLoop]: === Iteration 31 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:35:20,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:35:20,217 INFO L82 PathProgramCache]: Analyzing trace with hash -1563554768, now seen corresponding path program 1 times [2020-10-12 15:35:20,217 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:35:20,217 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1180976083] [2020-10-12 15:35:20,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:35:20,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:35:20,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:20,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:20,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:21,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:21,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:21,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:35:21,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-12 15:35:21,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 15:35:21,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1602 [2020-10-12 15:35:21,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:35:21,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 15:35:21,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:35:21,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-12 15:35:21,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:35:22,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:35:22,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:35:22,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:22,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:35:22,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:35:22,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:35:22,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:35:22,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:35:22,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:35:22,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:35:22,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:35:22,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:35:22,303 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:35:22,303 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1180976083] [2020-10-12 15:35:22,303 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:35:22,304 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-12 15:35:22,304 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186500698] [2020-10-12 15:35:22,304 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 15:35:22,305 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:35:22,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 15:35:22,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-10-12 15:35:22,305 INFO L87 Difference]: Start difference. First operand 480 states and 581 transitions. Second operand 11 states. [2020-10-12 15:35:23,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:35:23,451 INFO L93 Difference]: Finished difference Result 834 states and 1010 transitions. [2020-10-12 15:35:23,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-12 15:35:23,451 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 51 [2020-10-12 15:35:23,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:35:23,453 INFO L225 Difference]: With dead ends: 834 [2020-10-12 15:35:23,453 INFO L226 Difference]: Without dead ends: 634 [2020-10-12 15:35:23,454 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=110, Invalid=310, Unknown=0, NotChecked=0, Total=420 [2020-10-12 15:35:23,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2020-10-12 15:35:23,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 454. [2020-10-12 15:35:23,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 454 states. [2020-10-12 15:35:23,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 454 states to 454 states and 543 transitions. [2020-10-12 15:35:23,494 INFO L78 Accepts]: Start accepts. Automaton has 454 states and 543 transitions. Word has length 51 [2020-10-12 15:35:23,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:35:23,494 INFO L479 AbstractCegarLoop]: Abstraction has 454 states and 543 transitions. [2020-10-12 15:35:23,494 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 15:35:23,494 INFO L276 IsEmpty]: Start isEmpty. Operand 454 states and 543 transitions. [2020-10-12 15:35:23,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-12 15:35:23,495 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:35:23,496 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:35:23,496 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-12 15:35:23,496 INFO L427 AbstractCegarLoop]: === Iteration 32 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:35:23,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:35:23,496 INFO L82 PathProgramCache]: Analyzing trace with hash 559953507, now seen corresponding path program 1 times [2020-10-12 15:35:23,497 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:35:23,497 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [926335231] [2020-10-12 15:35:23,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:35:23,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:35:23,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:23,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:23,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:23,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:23,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:24,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:24,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:24,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:24,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:24,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:24,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:24,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:25,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:35:25,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-12 15:35:25,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-12 15:35:25,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1773 [2020-10-12 15:35:25,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:35:25,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 15:35:25,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 15:35:25,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-12 15:35:25,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:35:25,711 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 36 [2020-10-12 15:35:25,954 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 36 [2020-10-12 15:35:26,137 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 42 [2020-10-12 15:35:26,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:35:26,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:35:26,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:26,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:35:26,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:35:26,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:35:26,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 15:35:26,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:35:26,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:35:26,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:35:26,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:35:26,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:35:26,357 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:35:26,357 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [926335231] [2020-10-12 15:35:26,357 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:35:26,358 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-12 15:35:26,358 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042912526] [2020-10-12 15:35:26,358 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 15:35:26,358 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:35:26,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 15:35:26,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2020-10-12 15:35:26,361 INFO L87 Difference]: Start difference. First operand 454 states and 543 transitions. Second operand 13 states. [2020-10-12 15:35:27,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:35:27,812 INFO L93 Difference]: Finished difference Result 717 states and 852 transitions. [2020-10-12 15:35:27,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-12 15:35:27,812 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 52 [2020-10-12 15:35:27,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:35:27,816 INFO L225 Difference]: With dead ends: 717 [2020-10-12 15:35:27,816 INFO L226 Difference]: Without dead ends: 715 [2020-10-12 15:35:27,817 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=108, Invalid=492, Unknown=0, NotChecked=0, Total=600 [2020-10-12 15:35:27,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 715 states. [2020-10-12 15:35:27,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 715 to 493. [2020-10-12 15:35:27,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 493 states. [2020-10-12 15:35:27,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 493 states to 493 states and 589 transitions. [2020-10-12 15:35:27,864 INFO L78 Accepts]: Start accepts. Automaton has 493 states and 589 transitions. Word has length 52 [2020-10-12 15:35:27,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:35:27,864 INFO L479 AbstractCegarLoop]: Abstraction has 493 states and 589 transitions. [2020-10-12 15:35:27,865 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 15:35:27,865 INFO L276 IsEmpty]: Start isEmpty. Operand 493 states and 589 transitions. [2020-10-12 15:35:27,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-12 15:35:27,867 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:35:27,867 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:35:27,867 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-12 15:35:27,868 INFO L427 AbstractCegarLoop]: === Iteration 33 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:35:27,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:35:27,868 INFO L82 PathProgramCache]: Analyzing trace with hash -413122845, now seen corresponding path program 1 times [2020-10-12 15:35:27,868 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:35:27,868 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1455362127] [2020-10-12 15:35:27,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:35:27,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:35:27,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:27,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:28,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:28,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:28,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:28,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:28,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:28,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:28,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:28,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:28,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:28,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:29,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:35:29,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-12 15:35:29,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-12 15:35:29,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1449 [2020-10-12 15:35:29,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:35:29,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 15:35:29,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:35:29,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-12 15:35:29,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:35:29,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:35:29,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:35:29,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:29,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:35:29,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:35:29,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:35:29,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:35:29,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:35:29,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:35:29,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:35:29,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:35:29,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:35:29,921 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:35:29,921 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1455362127] [2020-10-12 15:35:29,921 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:35:29,921 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-12 15:35:29,921 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473904931] [2020-10-12 15:35:29,922 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-12 15:35:29,922 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:35:29,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-12 15:35:29,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2020-10-12 15:35:29,922 INFO L87 Difference]: Start difference. First operand 493 states and 589 transitions. Second operand 14 states. [2020-10-12 15:35:31,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:35:31,476 INFO L93 Difference]: Finished difference Result 812 states and 964 transitions. [2020-10-12 15:35:31,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-12 15:35:31,476 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 52 [2020-10-12 15:35:31,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:35:31,479 INFO L225 Difference]: With dead ends: 812 [2020-10-12 15:35:31,480 INFO L226 Difference]: Without dead ends: 810 [2020-10-12 15:35:31,480 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=160, Invalid=652, Unknown=0, NotChecked=0, Total=812 [2020-10-12 15:35:31,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 810 states. [2020-10-12 15:35:31,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 810 to 511. [2020-10-12 15:35:31,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 511 states. [2020-10-12 15:35:31,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 511 states to 511 states and 611 transitions. [2020-10-12 15:35:31,528 INFO L78 Accepts]: Start accepts. Automaton has 511 states and 611 transitions. Word has length 52 [2020-10-12 15:35:31,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:35:31,528 INFO L479 AbstractCegarLoop]: Abstraction has 511 states and 611 transitions. [2020-10-12 15:35:31,528 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-12 15:35:31,528 INFO L276 IsEmpty]: Start isEmpty. Operand 511 states and 611 transitions. [2020-10-12 15:35:31,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-12 15:35:31,529 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:35:31,530 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:35:31,530 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-12 15:35:31,530 INFO L427 AbstractCegarLoop]: === Iteration 34 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:35:31,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:35:31,530 INFO L82 PathProgramCache]: Analyzing trace with hash 1092058851, now seen corresponding path program 2 times [2020-10-12 15:35:31,531 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:35:31,531 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1909438042] [2020-10-12 15:35:31,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:35:31,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:35:31,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:31,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:31,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:32,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:32,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:32,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:32,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:32,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:32,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:32,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:32,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:32,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:33,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:35:33,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-12 15:35:33,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-12 15:35:33,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1505 [2020-10-12 15:35:33,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:35:33,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 15:35:33,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 15:35:33,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-12 15:35:33,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:35:33,420 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 55 [2020-10-12 15:35:33,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:35:33,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:35:33,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:33,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:35:33,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:35:33,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:35:33,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:35:33,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:35:33,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:35:33,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:35:33,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:35:33,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:35:33,684 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:35:33,684 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1909438042] [2020-10-12 15:35:33,684 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:35:33,685 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-12 15:35:33,685 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499475595] [2020-10-12 15:35:33,685 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-12 15:35:33,685 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:35:33,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-12 15:35:33,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-10-12 15:35:33,686 INFO L87 Difference]: Start difference. First operand 511 states and 611 transitions. Second operand 14 states. [2020-10-12 15:35:34,310 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 66 [2020-10-12 15:35:35,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:35:35,650 INFO L93 Difference]: Finished difference Result 868 states and 1031 transitions. [2020-10-12 15:35:35,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-12 15:35:35,651 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 52 [2020-10-12 15:35:35,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:35:35,653 INFO L225 Difference]: With dead ends: 868 [2020-10-12 15:35:35,653 INFO L226 Difference]: Without dead ends: 866 [2020-10-12 15:35:35,654 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=198, Invalid=794, Unknown=0, NotChecked=0, Total=992 [2020-10-12 15:35:35,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 866 states. [2020-10-12 15:35:35,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 866 to 511. [2020-10-12 15:35:35,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 511 states. [2020-10-12 15:35:35,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 511 states to 511 states and 611 transitions. [2020-10-12 15:35:35,700 INFO L78 Accepts]: Start accepts. Automaton has 511 states and 611 transitions. Word has length 52 [2020-10-12 15:35:35,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:35:35,701 INFO L479 AbstractCegarLoop]: Abstraction has 511 states and 611 transitions. [2020-10-12 15:35:35,701 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-12 15:35:35,701 INFO L276 IsEmpty]: Start isEmpty. Operand 511 states and 611 transitions. [2020-10-12 15:35:35,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-12 15:35:35,702 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:35:35,702 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:35:35,702 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-12 15:35:35,702 INFO L427 AbstractCegarLoop]: === Iteration 35 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:35:35,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:35:35,703 INFO L82 PathProgramCache]: Analyzing trace with hash 118982499, now seen corresponding path program 2 times [2020-10-12 15:35:35,703 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:35:35,703 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1272469047] [2020-10-12 15:35:35,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:35:35,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:35:35,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:35,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:35,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:36,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:36,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:36,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:36,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:35:36,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-12 15:35:36,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 15:35:36,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1235 [2020-10-12 15:35:36,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:35:36,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 15:35:36,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:35:36,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-12 15:35:36,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:35:37,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:35:37,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:35:37,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:37,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:35:37,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:35:37,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:35:37,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:35:37,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:35:37,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:35:37,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:35:37,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:35:37,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:35:37,237 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:35:37,238 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1272469047] [2020-10-12 15:35:37,238 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:35:37,238 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-12 15:35:37,238 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892069275] [2020-10-12 15:35:37,238 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 15:35:37,238 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:35:37,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 15:35:37,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-10-12 15:35:37,239 INFO L87 Difference]: Start difference. First operand 511 states and 611 transitions. Second operand 13 states. [2020-10-12 15:35:37,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:35:37,866 INFO L93 Difference]: Finished difference Result 790 states and 935 transitions. [2020-10-12 15:35:37,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-12 15:35:37,871 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 52 [2020-10-12 15:35:37,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:35:37,873 INFO L225 Difference]: With dead ends: 790 [2020-10-12 15:35:37,874 INFO L226 Difference]: Without dead ends: 612 [2020-10-12 15:35:37,874 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=88, Invalid=254, Unknown=0, NotChecked=0, Total=342 [2020-10-12 15:35:37,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 612 states. [2020-10-12 15:35:37,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 612 to 391. [2020-10-12 15:35:37,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 391 states. [2020-10-12 15:35:37,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 460 transitions. [2020-10-12 15:35:37,917 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 460 transitions. Word has length 52 [2020-10-12 15:35:37,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:35:37,918 INFO L479 AbstractCegarLoop]: Abstraction has 391 states and 460 transitions. [2020-10-12 15:35:37,918 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 15:35:37,918 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 460 transitions. [2020-10-12 15:35:37,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-12 15:35:37,920 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:35:37,920 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:35:37,921 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-12 15:35:37,921 INFO L427 AbstractCegarLoop]: === Iteration 36 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:35:37,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:35:37,925 INFO L82 PathProgramCache]: Analyzing trace with hash 897146061, now seen corresponding path program 1 times [2020-10-12 15:35:37,926 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:35:37,926 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [439961689] [2020-10-12 15:35:37,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:35:37,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:35:37,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:37,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:38,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:38,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:38,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:38,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:38,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:35:38,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-12 15:35:38,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 15:35:38,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 644 [2020-10-12 15:35:38,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:35:38,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 15:35:38,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-12 15:35:38,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-12 15:35:38,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:35:38,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:35:38,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:35:38,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:38,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:35:38,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:35:38,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:35:38,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:35:38,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:35:38,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:35:38,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:35:38,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:35:38,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:35:38,687 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-12 15:35:38,687 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [439961689] [2020-10-12 15:35:38,687 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:35:38,687 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 15:35:38,687 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25535624] [2020-10-12 15:35:38,688 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 15:35:38,688 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:35:38,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 15:35:38,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-12 15:35:38,689 INFO L87 Difference]: Start difference. First operand 391 states and 460 transitions. Second operand 9 states. [2020-10-12 15:35:39,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:35:39,360 INFO L93 Difference]: Finished difference Result 627 states and 735 transitions. [2020-10-12 15:35:39,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-12 15:35:39,361 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 53 [2020-10-12 15:35:39,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:35:39,363 INFO L225 Difference]: With dead ends: 627 [2020-10-12 15:35:39,363 INFO L226 Difference]: Without dead ends: 611 [2020-10-12 15:35:39,363 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=301, Unknown=0, NotChecked=0, Total=380 [2020-10-12 15:35:39,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 611 states. [2020-10-12 15:35:39,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 611 to 471. [2020-10-12 15:35:39,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 471 states. [2020-10-12 15:35:39,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 565 transitions. [2020-10-12 15:35:39,405 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 565 transitions. Word has length 53 [2020-10-12 15:35:39,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:35:39,405 INFO L479 AbstractCegarLoop]: Abstraction has 471 states and 565 transitions. [2020-10-12 15:35:39,405 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 15:35:39,405 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 565 transitions. [2020-10-12 15:35:39,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-12 15:35:39,406 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:35:39,406 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:35:39,407 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-12 15:35:39,407 INFO L427 AbstractCegarLoop]: === Iteration 37 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:35:39,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:35:39,407 INFO L82 PathProgramCache]: Analyzing trace with hash -391245138, now seen corresponding path program 2 times [2020-10-12 15:35:39,407 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:35:39,408 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [721751865] [2020-10-12 15:35:39,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:35:39,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:35:39,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:39,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:39,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:40,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:35:40,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-12 15:35:40,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 15:35:40,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 751 [2020-10-12 15:35:40,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:35:40,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 15:35:40,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:35:40,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-12 15:35:40,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:35:40,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:35:40,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:35:40,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:40,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:35:40,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:35:40,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:35:40,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:35:40,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:35:40,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:35:40,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:35:40,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:35:40,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:35:40,583 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:35:40,584 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [721751865] [2020-10-12 15:35:40,584 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:35:40,584 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-12 15:35:40,584 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841425011] [2020-10-12 15:35:40,585 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 15:35:40,585 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:35:40,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 15:35:40,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-10-12 15:35:40,585 INFO L87 Difference]: Start difference. First operand 471 states and 565 transitions. Second operand 12 states. [2020-10-12 15:35:41,342 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 62 [2020-10-12 15:35:41,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:35:41,885 INFO L93 Difference]: Finished difference Result 688 states and 819 transitions. [2020-10-12 15:35:41,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 15:35:41,885 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 55 [2020-10-12 15:35:41,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:35:41,889 INFO L225 Difference]: With dead ends: 688 [2020-10-12 15:35:41,890 INFO L226 Difference]: Without dead ends: 686 [2020-10-12 15:35:41,890 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=88, Invalid=254, Unknown=0, NotChecked=0, Total=342 [2020-10-12 15:35:41,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 686 states. [2020-10-12 15:35:41,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 686 to 471. [2020-10-12 15:35:41,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 471 states. [2020-10-12 15:35:41,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 563 transitions. [2020-10-12 15:35:41,942 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 563 transitions. Word has length 55 [2020-10-12 15:35:41,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:35:41,943 INFO L479 AbstractCegarLoop]: Abstraction has 471 states and 563 transitions. [2020-10-12 15:35:41,943 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 15:35:41,943 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 563 transitions. [2020-10-12 15:35:41,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-12 15:35:41,944 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:35:41,944 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:35:41,945 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-12 15:35:41,945 INFO L427 AbstractCegarLoop]: === Iteration 38 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:35:41,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:35:41,945 INFO L82 PathProgramCache]: Analyzing trace with hash 327610008, now seen corresponding path program 2 times [2020-10-12 15:35:41,945 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:35:41,946 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1937982114] [2020-10-12 15:35:41,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:35:41,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:35:41,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:42,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:42,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:42,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:42,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:42,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:42,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:35:42,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-12 15:35:42,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 15:35:42,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 832 [2020-10-12 15:35:42,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:35:42,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 15:35:42,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:35:42,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-12 15:35:42,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:35:43,035 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 34 [2020-10-12 15:35:43,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:35:43,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:35:43,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:43,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:35:43,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:35:43,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:35:43,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:35:43,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:35:43,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:35:43,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:35:43,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:35:43,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:35:43,176 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:35:43,176 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1937982114] [2020-10-12 15:35:43,176 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:35:43,176 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-12 15:35:43,176 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728604531] [2020-10-12 15:35:43,177 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 15:35:43,177 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:35:43,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 15:35:43,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-10-12 15:35:43,178 INFO L87 Difference]: Start difference. First operand 471 states and 563 transitions. Second operand 11 states. [2020-10-12 15:35:44,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:35:44,103 INFO L93 Difference]: Finished difference Result 559 states and 653 transitions. [2020-10-12 15:35:44,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-12 15:35:44,103 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 56 [2020-10-12 15:35:44,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:35:44,105 INFO L225 Difference]: With dead ends: 559 [2020-10-12 15:35:44,105 INFO L226 Difference]: Without dead ends: 518 [2020-10-12 15:35:44,106 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2020-10-12 15:35:44,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 518 states. [2020-10-12 15:35:44,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 518 to 471. [2020-10-12 15:35:44,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 471 states. [2020-10-12 15:35:44,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 563 transitions. [2020-10-12 15:35:44,141 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 563 transitions. Word has length 56 [2020-10-12 15:35:44,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:35:44,141 INFO L479 AbstractCegarLoop]: Abstraction has 471 states and 563 transitions. [2020-10-12 15:35:44,141 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 15:35:44,141 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 563 transitions. [2020-10-12 15:35:44,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-12 15:35:44,143 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:35:44,143 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:35:44,143 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-12 15:35:44,143 INFO L427 AbstractCegarLoop]: === Iteration 39 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:35:44,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:35:44,143 INFO L82 PathProgramCache]: Analyzing trace with hash -328498879, now seen corresponding path program 1 times [2020-10-12 15:35:44,144 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:35:44,144 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1470498806] [2020-10-12 15:35:44,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:35:44,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:35:44,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:44,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:44,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:44,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:44,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:44,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:44,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:44,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:44,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:44,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:44,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:45,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:35:45,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-12 15:35:45,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-12 15:35:45,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1598 [2020-10-12 15:35:45,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:35:45,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 15:35:45,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:35:45,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-12 15:35:45,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:35:45,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:35:45,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:35:45,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:45,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:35:45,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:35:45,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:35:45,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:35:45,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:35:45,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:35:45,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:35:45,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:35:45,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:35:45,975 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:35:45,976 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1470498806] [2020-10-12 15:35:45,976 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:35:45,976 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 15:35:45,976 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730819660] [2020-10-12 15:35:45,976 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 15:35:45,976 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:35:45,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 15:35:45,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-12 15:35:45,977 INFO L87 Difference]: Start difference. First operand 471 states and 563 transitions. Second operand 10 states. [2020-10-12 15:35:47,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:35:47,074 INFO L93 Difference]: Finished difference Result 562 states and 655 transitions. [2020-10-12 15:35:47,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-12 15:35:47,075 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 56 [2020-10-12 15:35:47,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:35:47,076 INFO L225 Difference]: With dead ends: 562 [2020-10-12 15:35:47,076 INFO L226 Difference]: Without dead ends: 477 [2020-10-12 15:35:47,077 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=80, Invalid=340, Unknown=0, NotChecked=0, Total=420 [2020-10-12 15:35:47,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 477 states. [2020-10-12 15:35:47,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 477 to 433. [2020-10-12 15:35:47,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 433 states. [2020-10-12 15:35:47,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 433 states to 433 states and 509 transitions. [2020-10-12 15:35:47,107 INFO L78 Accepts]: Start accepts. Automaton has 433 states and 509 transitions. Word has length 56 [2020-10-12 15:35:47,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:35:47,107 INFO L479 AbstractCegarLoop]: Abstraction has 433 states and 509 transitions. [2020-10-12 15:35:47,107 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 15:35:47,107 INFO L276 IsEmpty]: Start isEmpty. Operand 433 states and 509 transitions. [2020-10-12 15:35:47,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-12 15:35:47,108 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:35:47,108 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:35:47,108 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-12 15:35:47,108 INFO L427 AbstractCegarLoop]: === Iteration 40 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:35:47,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:35:47,109 INFO L82 PathProgramCache]: Analyzing trace with hash -420365, now seen corresponding path program 1 times [2020-10-12 15:35:47,109 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:35:47,109 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [954124951] [2020-10-12 15:35:47,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:35:47,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:35:47,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:47,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:47,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:47,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:47,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:47,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:47,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:47,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:47,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:47,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:48,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:48,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:51,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:35:51,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-12 15:35:51,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-12 15:35:51,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4034 [2020-10-12 15:35:51,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:35:51,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 15:35:51,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 15:35:51,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-12 15:35:51,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:35:51,484 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 46 [2020-10-12 15:35:51,686 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 43 [2020-10-12 15:35:51,955 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 36 [2020-10-12 15:35:52,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:35:52,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:35:52,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:52,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:35:52,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:35:52,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:35:52,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:35:52,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:35:52,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:35:52,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:35:52,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:35:52,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:35:52,215 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:35:52,215 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [954124951] [2020-10-12 15:35:52,215 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:35:52,215 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-12 15:35:52,216 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504257170] [2020-10-12 15:35:52,216 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-12 15:35:52,216 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:35:52,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-12 15:35:52,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2020-10-12 15:35:52,216 INFO L87 Difference]: Start difference. First operand 433 states and 509 transitions. Second operand 14 states. [2020-10-12 15:35:52,812 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 71 [2020-10-12 15:35:53,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:35:53,589 INFO L93 Difference]: Finished difference Result 480 states and 556 transitions. [2020-10-12 15:35:53,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-12 15:35:53,589 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 56 [2020-10-12 15:35:53,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:35:53,591 INFO L225 Difference]: With dead ends: 480 [2020-10-12 15:35:53,592 INFO L226 Difference]: Without dead ends: 478 [2020-10-12 15:35:53,592 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420 [2020-10-12 15:35:53,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 478 states. [2020-10-12 15:35:53,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 478 to 439. [2020-10-12 15:35:53,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 439 states. [2020-10-12 15:35:53,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439 states to 439 states and 515 transitions. [2020-10-12 15:35:53,627 INFO L78 Accepts]: Start accepts. Automaton has 439 states and 515 transitions. Word has length 56 [2020-10-12 15:35:53,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:35:53,627 INFO L479 AbstractCegarLoop]: Abstraction has 439 states and 515 transitions. [2020-10-12 15:35:53,627 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-12 15:35:53,627 INFO L276 IsEmpty]: Start isEmpty. Operand 439 states and 515 transitions. [2020-10-12 15:35:53,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-12 15:35:53,628 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:35:53,628 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:35:53,629 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-12 15:35:53,629 INFO L427 AbstractCegarLoop]: === Iteration 41 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:35:53,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:35:53,629 INFO L82 PathProgramCache]: Analyzing trace with hash 1775804019, now seen corresponding path program 1 times [2020-10-12 15:35:53,629 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:35:53,629 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [379871910] [2020-10-12 15:35:53,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:35:53,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:35:53,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:53,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:53,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:53,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:54,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:54,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:54,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:54,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:54,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:55,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:55,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:56,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:57,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:35:57,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-12 15:35:57,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-12 15:35:57,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4346 [2020-10-12 15:35:57,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:35:57,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 15:35:57,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 15:35:57,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-12 15:35:57,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:35:58,371 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 52 [2020-10-12 15:35:58,691 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 56 [2020-10-12 15:35:58,928 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 58 [2020-10-12 15:35:59,113 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 44 [2020-10-12 15:35:59,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:35:59,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:35:59,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:35:59,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:35:59,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:35:59,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:35:59,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:35:59,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:35:59,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:35:59,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:35:59,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:35:59,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:35:59,362 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:35:59,362 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [379871910] [2020-10-12 15:35:59,363 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:35:59,363 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-12 15:35:59,363 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109910912] [2020-10-12 15:35:59,363 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-12 15:35:59,363 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:35:59,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-12 15:35:59,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2020-10-12 15:35:59,364 INFO L87 Difference]: Start difference. First operand 439 states and 515 transitions. Second operand 14 states. [2020-10-12 15:35:59,724 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 67 [2020-10-12 15:35:59,974 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 69 [2020-10-12 15:36:00,309 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 75 [2020-10-12 15:36:01,004 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 81 [2020-10-12 15:36:01,300 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 63 [2020-10-12 15:36:01,698 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 60 [2020-10-12 15:36:01,888 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 74 [2020-10-12 15:36:02,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:36:02,678 INFO L93 Difference]: Finished difference Result 549 states and 628 transitions. [2020-10-12 15:36:02,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-12 15:36:02,679 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 56 [2020-10-12 15:36:02,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:36:02,681 INFO L225 Difference]: With dead ends: 549 [2020-10-12 15:36:02,682 INFO L226 Difference]: Without dead ends: 547 [2020-10-12 15:36:02,682 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=103, Invalid=547, Unknown=0, NotChecked=0, Total=650 [2020-10-12 15:36:02,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 547 states. [2020-10-12 15:36:02,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 547 to 439. [2020-10-12 15:36:02,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 439 states. [2020-10-12 15:36:02,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439 states to 439 states and 515 transitions. [2020-10-12 15:36:02,735 INFO L78 Accepts]: Start accepts. Automaton has 439 states and 515 transitions. Word has length 56 [2020-10-12 15:36:02,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:36:02,736 INFO L479 AbstractCegarLoop]: Abstraction has 439 states and 515 transitions. [2020-10-12 15:36:02,736 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-12 15:36:02,736 INFO L276 IsEmpty]: Start isEmpty. Operand 439 states and 515 transitions. [2020-10-12 15:36:02,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-12 15:36:02,737 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:36:02,737 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:36:02,737 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-12 15:36:02,737 INFO L427 AbstractCegarLoop]: === Iteration 42 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:36:02,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:36:02,738 INFO L82 PathProgramCache]: Analyzing trace with hash -550383868, now seen corresponding path program 1 times [2020-10-12 15:36:02,738 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:36:02,738 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1006327486] [2020-10-12 15:36:02,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:36:02,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:36:02,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:36:02,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:36:03,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:36:03,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:36:03,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:36:03,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:36:04,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:36:04,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-12 15:36:04,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 15:36:04,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1316 [2020-10-12 15:36:04,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:36:04,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 15:36:04,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-12 15:36:04,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-12 15:36:04,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:36:04,356 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 35 [2020-10-12 15:36:04,475 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 42 [2020-10-12 15:36:04,646 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 49 [2020-10-12 15:36:04,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:36:04,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:36:04,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:36:04,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:36:04,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:36:04,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:36:04,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:36:04,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:36:04,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:36:04,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:36:04,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:36:04,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:36:04,947 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:36:04,947 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1006327486] [2020-10-12 15:36:04,948 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:36:04,948 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-12 15:36:04,948 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104448420] [2020-10-12 15:36:04,948 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 15:36:04,948 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:36:04,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 15:36:04,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-10-12 15:36:04,949 INFO L87 Difference]: Start difference. First operand 439 states and 515 transitions. Second operand 13 states. [2020-10-12 15:36:05,484 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 70 [2020-10-12 15:36:06,033 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 88 [2020-10-12 15:36:06,248 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2020-10-12 15:36:07,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:36:07,268 INFO L93 Difference]: Finished difference Result 750 states and 890 transitions. [2020-10-12 15:36:07,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-12 15:36:07,268 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 57 [2020-10-12 15:36:07,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:36:07,271 INFO L225 Difference]: With dead ends: 750 [2020-10-12 15:36:07,271 INFO L226 Difference]: Without dead ends: 748 [2020-10-12 15:36:07,272 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=114, Invalid=588, Unknown=0, NotChecked=0, Total=702 [2020-10-12 15:36:07,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 748 states. [2020-10-12 15:36:07,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 748 to 526. [2020-10-12 15:36:07,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 526 states. [2020-10-12 15:36:07,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 618 transitions. [2020-10-12 15:36:07,325 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 618 transitions. Word has length 57 [2020-10-12 15:36:07,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:36:07,325 INFO L479 AbstractCegarLoop]: Abstraction has 526 states and 618 transitions. [2020-10-12 15:36:07,325 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 15:36:07,325 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 618 transitions. [2020-10-12 15:36:07,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-12 15:36:07,326 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:36:07,327 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:36:07,327 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-12 15:36:07,327 INFO L427 AbstractCegarLoop]: === Iteration 43 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:36:07,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:36:07,328 INFO L82 PathProgramCache]: Analyzing trace with hash 906137348, now seen corresponding path program 2 times [2020-10-12 15:36:07,328 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:36:07,328 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2059323715] [2020-10-12 15:36:07,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:36:07,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:36:07,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:36:07,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:36:07,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:36:07,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:36:08,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:36:08,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-12 15:36:08,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 15:36:08,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 679 [2020-10-12 15:36:08,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:36:08,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 15:36:08,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-12 15:36:08,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-12 15:36:08,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:36:08,322 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 39 [2020-10-12 15:36:08,649 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 52 [2020-10-12 15:36:09,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:36:09,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:36:09,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:36:09,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:36:09,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:36:09,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:36:09,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:36:09,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:36:09,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:36:09,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:36:09,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:36:09,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:36:09,057 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:36:09,057 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2059323715] [2020-10-12 15:36:09,057 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:36:09,057 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-12 15:36:09,058 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135405062] [2020-10-12 15:36:09,058 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 15:36:09,058 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:36:09,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 15:36:09,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2020-10-12 15:36:09,059 INFO L87 Difference]: Start difference. First operand 526 states and 618 transitions. Second operand 13 states. [2020-10-12 15:36:09,471 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 50 [2020-10-12 15:36:09,829 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 78 [2020-10-12 15:36:10,164 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 81 [2020-10-12 15:36:10,629 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 67 [2020-10-12 15:36:11,143 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 62 [2020-10-12 15:36:11,448 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 58 [2020-10-12 15:36:11,684 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 62 [2020-10-12 15:36:12,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:36:12,021 INFO L93 Difference]: Finished difference Result 863 states and 1025 transitions. [2020-10-12 15:36:12,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-12 15:36:12,022 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 57 [2020-10-12 15:36:12,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:36:12,025 INFO L225 Difference]: With dead ends: 863 [2020-10-12 15:36:12,025 INFO L226 Difference]: Without dead ends: 861 [2020-10-12 15:36:12,026 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=129, Invalid=627, Unknown=0, NotChecked=0, Total=756 [2020-10-12 15:36:12,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 861 states. [2020-10-12 15:36:12,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 861 to 550. [2020-10-12 15:36:12,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 550 states. [2020-10-12 15:36:12,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 550 states to 550 states and 648 transitions. [2020-10-12 15:36:12,099 INFO L78 Accepts]: Start accepts. Automaton has 550 states and 648 transitions. Word has length 57 [2020-10-12 15:36:12,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:36:12,099 INFO L479 AbstractCegarLoop]: Abstraction has 550 states and 648 transitions. [2020-10-12 15:36:12,099 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 15:36:12,099 INFO L276 IsEmpty]: Start isEmpty. Operand 550 states and 648 transitions. [2020-10-12 15:36:12,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-12 15:36:12,101 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:36:12,101 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:36:12,101 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-12 15:36:12,101 INFO L427 AbstractCegarLoop]: === Iteration 44 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:36:12,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:36:12,102 INFO L82 PathProgramCache]: Analyzing trace with hash -1322002812, now seen corresponding path program 2 times [2020-10-12 15:36:12,102 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:36:12,102 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1430029547] [2020-10-12 15:36:12,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:36:12,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:36:12,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:36:12,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:36:12,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:36:12,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:36:12,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:36:12,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-12 15:36:12,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 15:36:12,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 881 [2020-10-12 15:36:12,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:36:12,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 15:36:12,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-12 15:36:12,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-12 15:36:12,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:36:13,483 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 42 [2020-10-12 15:36:13,907 WARN L193 SmtUtils]: Spent 408.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 57 [2020-10-12 15:36:14,881 WARN L193 SmtUtils]: Spent 942.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 74 [2020-10-12 15:36:15,165 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 30 [2020-10-12 15:36:15,325 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 27 [2020-10-12 15:36:15,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:36:15,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:36:15,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:36:15,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:36:15,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:36:15,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:36:15,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 15:36:15,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:36:15,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:36:15,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:36:15,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:36:15,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:36:15,496 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:36:15,496 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1430029547] [2020-10-12 15:36:15,496 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:36:15,496 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-12 15:36:15,496 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891930453] [2020-10-12 15:36:15,496 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 15:36:15,497 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:36:15,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 15:36:15,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2020-10-12 15:36:15,497 INFO L87 Difference]: Start difference. First operand 550 states and 648 transitions. Second operand 13 states. [2020-10-12 15:36:15,830 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 58 [2020-10-12 15:36:16,092 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 84 [2020-10-12 15:36:16,362 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 66 [2020-10-12 15:36:16,825 WARN L193 SmtUtils]: Spent 354.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 81 [2020-10-12 15:36:17,344 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 107 [2020-10-12 15:36:17,838 WARN L193 SmtUtils]: Spent 437.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 95 [2020-10-12 15:36:18,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:36:18,940 INFO L93 Difference]: Finished difference Result 962 states and 1144 transitions. [2020-10-12 15:36:18,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-12 15:36:18,941 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 57 [2020-10-12 15:36:18,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:36:18,945 INFO L225 Difference]: With dead ends: 962 [2020-10-12 15:36:18,945 INFO L226 Difference]: Without dead ends: 960 [2020-10-12 15:36:18,946 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=116, Invalid=640, Unknown=0, NotChecked=0, Total=756 [2020-10-12 15:36:18,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 960 states. [2020-10-12 15:36:19,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 960 to 562. [2020-10-12 15:36:19,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 562 states. [2020-10-12 15:36:19,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 662 transitions. [2020-10-12 15:36:19,020 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 662 transitions. Word has length 57 [2020-10-12 15:36:19,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:36:19,020 INFO L479 AbstractCegarLoop]: Abstraction has 562 states and 662 transitions. [2020-10-12 15:36:19,020 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 15:36:19,021 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 662 transitions. [2020-10-12 15:36:19,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-12 15:36:19,022 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:36:19,022 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:36:19,023 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-10-12 15:36:19,023 INFO L427 AbstractCegarLoop]: === Iteration 45 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:36:19,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:36:19,023 INFO L82 PathProgramCache]: Analyzing trace with hash 366009784, now seen corresponding path program 1 times [2020-10-12 15:36:19,023 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:36:19,023 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1705763575] [2020-10-12 15:36:19,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:36:19,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:36:19,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:36:19,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:36:19,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:36:19,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:36:19,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:36:19,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:36:19,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:36:20,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:36:20,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:36:20,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:36:20,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:36:21,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:36:21,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-12 15:36:21,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-12 15:36:21,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2213 [2020-10-12 15:36:21,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:36:21,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 15:36:21,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 15:36:21,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-12 15:36:21,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:36:21,501 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 50 [2020-10-12 15:36:21,722 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 59 [2020-10-12 15:36:21,920 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 37 [2020-10-12 15:36:22,201 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 42 [2020-10-12 15:36:22,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:36:22,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:36:22,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:36:22,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:36:22,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:36:22,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:36:22,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:36:22,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:36:22,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:36:22,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:36:22,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:36:22,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:36:22,426 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:36:22,426 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1705763575] [2020-10-12 15:36:22,426 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:36:22,426 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-12 15:36:22,427 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573143755] [2020-10-12 15:36:22,427 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 15:36:22,427 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:36:22,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 15:36:22,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-10-12 15:36:22,427 INFO L87 Difference]: Start difference. First operand 562 states and 662 transitions. Second operand 12 states. [2020-10-12 15:36:23,038 WARN L193 SmtUtils]: Spent 477.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 77 [2020-10-12 15:36:23,235 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 58 [2020-10-12 15:36:23,739 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 42 [2020-10-12 15:36:23,937 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 48 [2020-10-12 15:36:24,500 WARN L193 SmtUtils]: Spent 528.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 83 [2020-10-12 15:36:24,912 WARN L193 SmtUtils]: Spent 366.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 62 [2020-10-12 15:36:25,334 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 45 [2020-10-12 15:36:25,543 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 47 [2020-10-12 15:36:25,767 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 54 [2020-10-12 15:36:25,997 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 60 [2020-10-12 15:36:26,277 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 58 [2020-10-12 15:36:26,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:36:26,434 INFO L93 Difference]: Finished difference Result 676 states and 780 transitions. [2020-10-12 15:36:26,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-12 15:36:26,434 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 59 [2020-10-12 15:36:26,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:36:26,436 INFO L225 Difference]: With dead ends: 676 [2020-10-12 15:36:26,436 INFO L226 Difference]: Without dead ends: 656 [2020-10-12 15:36:26,437 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=188, Invalid=568, Unknown=0, NotChecked=0, Total=756 [2020-10-12 15:36:26,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 656 states. [2020-10-12 15:36:26,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 656 to 562. [2020-10-12 15:36:26,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 562 states. [2020-10-12 15:36:26,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 659 transitions. [2020-10-12 15:36:26,486 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 659 transitions. Word has length 59 [2020-10-12 15:36:26,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:36:26,486 INFO L479 AbstractCegarLoop]: Abstraction has 562 states and 659 transitions. [2020-10-12 15:36:26,486 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 15:36:26,486 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 659 transitions. [2020-10-12 15:36:26,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-12 15:36:26,487 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:36:26,487 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:36:26,487 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-10-12 15:36:26,487 INFO L427 AbstractCegarLoop]: === Iteration 46 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:36:26,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:36:26,487 INFO L82 PathProgramCache]: Analyzing trace with hash 1703436781, now seen corresponding path program 1 times [2020-10-12 15:36:26,488 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:36:26,488 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [380006496] [2020-10-12 15:36:26,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:36:26,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:36:26,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:36:26,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:36:26,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:36:26,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:36:26,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:36:27,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:36:27,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:36:27,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-12 15:36:27,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 15:36:27,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 945 [2020-10-12 15:36:27,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:36:27,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 15:36:27,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-12 15:36:27,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-12 15:36:27,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:36:27,685 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 35 [2020-10-12 15:36:27,848 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 37 [2020-10-12 15:36:28,074 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 49 [2020-10-12 15:36:28,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:36:28,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:36:28,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:36:28,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:36:28,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:36:28,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:36:28,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:36:28,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:36:28,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:36:28,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:36:28,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:36:28,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:36:28,307 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:36:28,307 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [380006496] [2020-10-12 15:36:28,307 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:36:28,308 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-12 15:36:28,308 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220530469] [2020-10-12 15:36:28,308 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 15:36:28,308 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:36:28,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 15:36:28,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-10-12 15:36:28,309 INFO L87 Difference]: Start difference. First operand 562 states and 659 transitions. Second operand 13 states. [2020-10-12 15:36:28,779 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 64 [2020-10-12 15:36:29,310 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 88 [2020-10-12 15:36:29,529 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2020-10-12 15:36:30,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:36:30,520 INFO L93 Difference]: Finished difference Result 878 states and 1036 transitions. [2020-10-12 15:36:30,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-12 15:36:30,521 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 60 [2020-10-12 15:36:30,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:36:30,524 INFO L225 Difference]: With dead ends: 878 [2020-10-12 15:36:30,524 INFO L226 Difference]: Without dead ends: 876 [2020-10-12 15:36:30,524 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=124, Invalid=632, Unknown=0, NotChecked=0, Total=756 [2020-10-12 15:36:30,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 876 states. [2020-10-12 15:36:30,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 876 to 621. [2020-10-12 15:36:30,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 621 states. [2020-10-12 15:36:30,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 621 states to 621 states and 724 transitions. [2020-10-12 15:36:30,585 INFO L78 Accepts]: Start accepts. Automaton has 621 states and 724 transitions. Word has length 60 [2020-10-12 15:36:30,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:36:30,585 INFO L479 AbstractCegarLoop]: Abstraction has 621 states and 724 transitions. [2020-10-12 15:36:30,585 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 15:36:30,585 INFO L276 IsEmpty]: Start isEmpty. Operand 621 states and 724 transitions. [2020-10-12 15:36:30,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-12 15:36:30,586 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:36:30,587 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:36:30,587 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-10-12 15:36:30,587 INFO L427 AbstractCegarLoop]: === Iteration 47 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:36:30,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:36:30,587 INFO L82 PathProgramCache]: Analyzing trace with hash 872391149, now seen corresponding path program 2 times [2020-10-12 15:36:30,587 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:36:30,588 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1801293333] [2020-10-12 15:36:30,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:36:30,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:36:30,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:36:30,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:36:30,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:36:30,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:36:31,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:36:31,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-12 15:36:31,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 15:36:31,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 843 [2020-10-12 15:36:31,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:36:31,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 15:36:31,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-12 15:36:31,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-12 15:36:31,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:36:31,795 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 32 [2020-10-12 15:36:32,032 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 60 [2020-10-12 15:36:32,211 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 40 [2020-10-12 15:36:32,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:36:32,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:36:32,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:36:32,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:36:32,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:36:32,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:36:32,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 15:36:32,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:36:32,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:36:32,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:36:32,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:36:32,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:36:32,625 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:36:32,625 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1801293333] [2020-10-12 15:36:32,625 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:36:32,625 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-12 15:36:32,625 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843767430] [2020-10-12 15:36:32,625 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 15:36:32,626 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:36:32,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 15:36:32,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-10-12 15:36:32,626 INFO L87 Difference]: Start difference. First operand 621 states and 724 transitions. Second operand 13 states. [2020-10-12 15:36:33,220 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 79 [2020-10-12 15:36:33,555 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 81 [2020-10-12 15:36:34,094 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 68 [2020-10-12 15:36:34,280 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 61 [2020-10-12 15:36:34,439 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 58 [2020-10-12 15:36:34,689 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 62 [2020-10-12 15:36:35,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:36:35,278 INFO L93 Difference]: Finished difference Result 925 states and 1091 transitions. [2020-10-12 15:36:35,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-12 15:36:35,278 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 60 [2020-10-12 15:36:35,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:36:35,281 INFO L225 Difference]: With dead ends: 925 [2020-10-12 15:36:35,281 INFO L226 Difference]: Without dead ends: 923 [2020-10-12 15:36:35,282 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=133, Invalid=623, Unknown=0, NotChecked=0, Total=756 [2020-10-12 15:36:35,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 923 states. [2020-10-12 15:36:35,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 923 to 621. [2020-10-12 15:36:35,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 621 states. [2020-10-12 15:36:35,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 621 states to 621 states and 726 transitions. [2020-10-12 15:36:35,335 INFO L78 Accepts]: Start accepts. Automaton has 621 states and 726 transitions. Word has length 60 [2020-10-12 15:36:35,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:36:35,335 INFO L479 AbstractCegarLoop]: Abstraction has 621 states and 726 transitions. [2020-10-12 15:36:35,335 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 15:36:35,335 INFO L276 IsEmpty]: Start isEmpty. Operand 621 states and 726 transitions. [2020-10-12 15:36:35,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-12 15:36:35,337 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:36:35,337 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:36:35,337 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-10-12 15:36:35,337 INFO L427 AbstractCegarLoop]: === Iteration 48 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:36:35,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:36:35,338 INFO L82 PathProgramCache]: Analyzing trace with hash -2119530068, now seen corresponding path program 2 times [2020-10-12 15:36:35,338 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:36:35,338 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [633772817] [2020-10-12 15:36:35,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:36:35,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:36:35,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:36:35,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:36:35,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:36:35,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:36:37,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:36:37,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-12 15:36:37,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 15:36:37,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1825 [2020-10-12 15:36:37,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:36:37,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 15:36:37,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:36:37,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-12 15:36:37,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:36:37,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:36:37,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:36:37,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:36:37,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:36:37,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:36:37,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:36:37,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:36:37,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:36:37,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:36:37,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:36:37,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:36:37,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:36:37,762 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-12 15:36:37,762 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [633772817] [2020-10-12 15:36:37,762 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:36:37,763 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-12 15:36:37,763 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224666662] [2020-10-12 15:36:37,763 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 15:36:37,763 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:36:37,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 15:36:37,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-10-12 15:36:37,764 INFO L87 Difference]: Start difference. First operand 621 states and 726 transitions. Second operand 12 states. [2020-10-12 15:36:38,450 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2020-10-12 15:36:39,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:36:39,297 INFO L93 Difference]: Finished difference Result 669 states and 778 transitions. [2020-10-12 15:36:39,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-12 15:36:39,298 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 61 [2020-10-12 15:36:39,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:36:39,300 INFO L225 Difference]: With dead ends: 669 [2020-10-12 15:36:39,300 INFO L226 Difference]: Without dead ends: 636 [2020-10-12 15:36:39,300 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=114, Invalid=392, Unknown=0, NotChecked=0, Total=506 [2020-10-12 15:36:39,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 636 states. [2020-10-12 15:36:39,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 636 to 600. [2020-10-12 15:36:39,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 600 states. [2020-10-12 15:36:39,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 600 states to 600 states and 704 transitions. [2020-10-12 15:36:39,348 INFO L78 Accepts]: Start accepts. Automaton has 600 states and 704 transitions. Word has length 61 [2020-10-12 15:36:39,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:36:39,348 INFO L479 AbstractCegarLoop]: Abstraction has 600 states and 704 transitions. [2020-10-12 15:36:39,349 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 15:36:39,349 INFO L276 IsEmpty]: Start isEmpty. Operand 600 states and 704 transitions. [2020-10-12 15:36:39,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-12 15:36:39,350 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:36:39,350 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:36:39,350 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-10-12 15:36:39,350 INFO L427 AbstractCegarLoop]: === Iteration 49 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:36:39,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:36:39,351 INFO L82 PathProgramCache]: Analyzing trace with hash -329461460, now seen corresponding path program 2 times [2020-10-12 15:36:39,351 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:36:39,351 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [757218952] [2020-10-12 15:36:39,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:36:39,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:36:39,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:36:39,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:36:39,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:36:39,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:36:39,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:36:40,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:36:40,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:36:44,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:36:44,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-12 15:36:44,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-12 15:36:44,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4992 [2020-10-12 15:36:44,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:36:44,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 15:36:44,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 15:36:44,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-12 15:36:44,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:36:44,691 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 31 [2020-10-12 15:36:44,876 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 38 [2020-10-12 15:36:45,177 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 77 [2020-10-12 15:36:45,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:36:45,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:36:45,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:36:45,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:36:45,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:36:45,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:36:45,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:36:45,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:36:45,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:36:45,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:36:45,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:36:45,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:36:45,771 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-12 15:36:45,772 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [757218952] [2020-10-12 15:36:45,772 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:36:45,772 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-12 15:36:45,772 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142238015] [2020-10-12 15:36:45,772 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 15:36:45,772 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:36:45,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 15:36:45,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-10-12 15:36:45,773 INFO L87 Difference]: Start difference. First operand 600 states and 704 transitions. Second operand 13 states. [2020-10-12 15:36:46,121 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 61 [2020-10-12 15:36:46,364 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 77 [2020-10-12 15:36:46,669 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 81 [2020-10-12 15:36:47,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:36:47,516 INFO L93 Difference]: Finished difference Result 673 states and 781 transitions. [2020-10-12 15:36:47,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-12 15:36:47,516 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 61 [2020-10-12 15:36:47,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:36:47,519 INFO L225 Difference]: With dead ends: 673 [2020-10-12 15:36:47,519 INFO L226 Difference]: Without dead ends: 661 [2020-10-12 15:36:47,519 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=91, Invalid=371, Unknown=0, NotChecked=0, Total=462 [2020-10-12 15:36:47,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 661 states. [2020-10-12 15:36:47,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 661 to 590. [2020-10-12 15:36:47,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 590 states. [2020-10-12 15:36:47,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 590 states to 590 states and 693 transitions. [2020-10-12 15:36:47,566 INFO L78 Accepts]: Start accepts. Automaton has 590 states and 693 transitions. Word has length 61 [2020-10-12 15:36:47,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:36:47,567 INFO L479 AbstractCegarLoop]: Abstraction has 590 states and 693 transitions. [2020-10-12 15:36:47,567 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 15:36:47,567 INFO L276 IsEmpty]: Start isEmpty. Operand 590 states and 693 transitions. [2020-10-12 15:36:47,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-12 15:36:47,568 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:36:47,568 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:36:47,568 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-10-12 15:36:47,568 INFO L427 AbstractCegarLoop]: === Iteration 50 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:36:47,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:36:47,568 INFO L82 PathProgramCache]: Analyzing trace with hash 909820675, now seen corresponding path program 3 times [2020-10-12 15:36:47,569 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:36:47,569 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1277470108] [2020-10-12 15:36:47,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:36:47,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:36:47,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:36:47,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:36:47,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:36:47,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:36:47,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:36:47,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:36:48,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:36:48,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-12 15:36:48,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 15:36:48,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 674 [2020-10-12 15:36:48,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:36:48,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 15:36:48,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:36:48,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-12 15:36:48,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:36:48,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:36:48,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:36:48,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:36:48,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:36:48,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:36:48,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:36:48,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:36:48,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:36:48,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:36:48,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:36:48,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:36:48,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:36:48,752 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:36:48,752 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1277470108] [2020-10-12 15:36:48,752 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:36:48,752 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-12 15:36:48,752 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741665683] [2020-10-12 15:36:48,753 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 15:36:48,753 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:36:48,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 15:36:48,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-10-12 15:36:48,753 INFO L87 Difference]: Start difference. First operand 590 states and 693 transitions. Second operand 12 states. [2020-10-12 15:36:49,368 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2020-10-12 15:36:49,634 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 71 [2020-10-12 15:36:50,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:36:50,823 INFO L93 Difference]: Finished difference Result 1033 states and 1241 transitions. [2020-10-12 15:36:50,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-12 15:36:50,824 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 62 [2020-10-12 15:36:50,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:36:50,827 INFO L225 Difference]: With dead ends: 1033 [2020-10-12 15:36:50,827 INFO L226 Difference]: Without dead ends: 883 [2020-10-12 15:36:50,828 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=103, Invalid=497, Unknown=0, NotChecked=0, Total=600 [2020-10-12 15:36:50,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 883 states. [2020-10-12 15:36:50,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 883 to 701. [2020-10-12 15:36:50,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 701 states. [2020-10-12 15:36:50,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 701 states to 701 states and 824 transitions. [2020-10-12 15:36:50,886 INFO L78 Accepts]: Start accepts. Automaton has 701 states and 824 transitions. Word has length 62 [2020-10-12 15:36:50,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:36:50,886 INFO L479 AbstractCegarLoop]: Abstraction has 701 states and 824 transitions. [2020-10-12 15:36:50,886 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 15:36:50,886 INFO L276 IsEmpty]: Start isEmpty. Operand 701 states and 824 transitions. [2020-10-12 15:36:50,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-12 15:36:50,887 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:36:50,887 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:36:50,888 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2020-10-12 15:36:50,888 INFO L427 AbstractCegarLoop]: === Iteration 51 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:36:50,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:36:50,888 INFO L82 PathProgramCache]: Analyzing trace with hash 338307971, now seen corresponding path program 3 times [2020-10-12 15:36:50,888 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:36:50,889 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [691402386] [2020-10-12 15:36:50,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:36:50,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:36:50,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:36:50,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:36:51,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:36:51,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:36:51,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-12 15:36:51,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 15:36:51,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 690 [2020-10-12 15:36:51,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:36:51,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 15:36:51,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:36:51,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-12 15:36:51,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:36:52,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:36:52,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:36:52,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:36:52,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:36:52,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:36:52,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:36:52,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:36:52,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:36:52,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:36:52,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:36:52,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:36:52,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:36:52,101 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:36:52,101 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [691402386] [2020-10-12 15:36:52,101 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:36:52,101 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-12 15:36:52,102 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326487632] [2020-10-12 15:36:52,102 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 15:36:52,102 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:36:52,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 15:36:52,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-10-12 15:36:52,103 INFO L87 Difference]: Start difference. First operand 701 states and 824 transitions. Second operand 13 states. [2020-10-12 15:36:52,394 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 57 [2020-10-12 15:36:52,834 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 53 [2020-10-12 15:36:54,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:36:54,317 INFO L93 Difference]: Finished difference Result 1164 states and 1393 transitions. [2020-10-12 15:36:54,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-12 15:36:54,318 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 62 [2020-10-12 15:36:54,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:36:54,322 INFO L225 Difference]: With dead ends: 1164 [2020-10-12 15:36:54,322 INFO L226 Difference]: Without dead ends: 1162 [2020-10-12 15:36:54,322 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=100, Invalid=602, Unknown=0, NotChecked=0, Total=702 [2020-10-12 15:36:54,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1162 states. [2020-10-12 15:36:54,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1162 to 785. [2020-10-12 15:36:54,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 785 states. [2020-10-12 15:36:54,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 785 states to 785 states and 928 transitions. [2020-10-12 15:36:54,387 INFO L78 Accepts]: Start accepts. Automaton has 785 states and 928 transitions. Word has length 62 [2020-10-12 15:36:54,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:36:54,387 INFO L479 AbstractCegarLoop]: Abstraction has 785 states and 928 transitions. [2020-10-12 15:36:54,387 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 15:36:54,387 INFO L276 IsEmpty]: Start isEmpty. Operand 785 states and 928 transitions. [2020-10-12 15:36:54,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-12 15:36:54,389 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:36:54,389 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:36:54,389 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2020-10-12 15:36:54,389 INFO L427 AbstractCegarLoop]: === Iteration 52 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:36:54,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:36:54,389 INFO L82 PathProgramCache]: Analyzing trace with hash 679696195, now seen corresponding path program 1 times [2020-10-12 15:36:54,389 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:36:54,390 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [439917314] [2020-10-12 15:36:54,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:36:54,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:36:54,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:36:54,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:36:54,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:36:54,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:36:54,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:36:55,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:36:56,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:36:56,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:36:58,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:36:58,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-12 15:36:58,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-12 15:36:58,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4113 [2020-10-12 15:36:58,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:36:58,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 15:36:58,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-12 15:36:58,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-12 15:36:58,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:36:58,969 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 45 [2020-10-12 15:36:59,094 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 36 [2020-10-12 15:36:59,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:36:59,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:36:59,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:36:59,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:36:59,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:36:59,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:36:59,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:36:59,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:36:59,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:36:59,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:36:59,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:36:59,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:36:59,368 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:36:59,368 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [439917314] [2020-10-12 15:36:59,368 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:36:59,368 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-12 15:36:59,369 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929192270] [2020-10-12 15:36:59,369 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 15:36:59,369 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:36:59,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 15:36:59,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2020-10-12 15:36:59,369 INFO L87 Difference]: Start difference. First operand 785 states and 928 transitions. Second operand 13 states. [2020-10-12 15:37:00,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:37:00,601 INFO L93 Difference]: Finished difference Result 807 states and 948 transitions. [2020-10-12 15:37:00,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-12 15:37:00,602 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 64 [2020-10-12 15:37:00,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:37:00,604 INFO L225 Difference]: With dead ends: 807 [2020-10-12 15:37:00,604 INFO L226 Difference]: Without dead ends: 805 [2020-10-12 15:37:00,605 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=73, Invalid=389, Unknown=0, NotChecked=0, Total=462 [2020-10-12 15:37:00,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 805 states. [2020-10-12 15:37:00,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 805 to 791. [2020-10-12 15:37:00,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 791 states. [2020-10-12 15:37:00,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 791 states to 791 states and 934 transitions. [2020-10-12 15:37:00,676 INFO L78 Accepts]: Start accepts. Automaton has 791 states and 934 transitions. Word has length 64 [2020-10-12 15:37:00,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:37:00,676 INFO L479 AbstractCegarLoop]: Abstraction has 791 states and 934 transitions. [2020-10-12 15:37:00,676 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 15:37:00,676 INFO L276 IsEmpty]: Start isEmpty. Operand 791 states and 934 transitions. [2020-10-12 15:37:00,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-12 15:37:00,677 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:37:00,677 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:37:00,678 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2020-10-12 15:37:00,678 INFO L427 AbstractCegarLoop]: === Iteration 53 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:37:00,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:37:00,678 INFO L82 PathProgramCache]: Analyzing trace with hash -1751367410, now seen corresponding path program 3 times [2020-10-12 15:37:00,678 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:37:00,678 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [327669919] [2020-10-12 15:37:00,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:37:00,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:37:00,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:37:00,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:37:00,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:37:01,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:37:01,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-12 15:37:01,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 15:37:01,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 488 [2020-10-12 15:37:01,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:37:01,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 15:37:01,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:37:01,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-12 15:37:01,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:37:01,380 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 38 [2020-10-12 15:37:01,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:37:01,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:37:01,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:37:01,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:37:01,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:37:01,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:37:01,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:37:01,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:37:01,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:37:01,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:37:01,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:37:01,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:37:01,785 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:37:01,786 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [327669919] [2020-10-12 15:37:01,786 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:37:01,786 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-12 15:37:01,786 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237176082] [2020-10-12 15:37:01,786 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 15:37:01,786 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:37:01,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 15:37:01,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2020-10-12 15:37:01,787 INFO L87 Difference]: Start difference. First operand 791 states and 934 transitions. Second operand 13 states. [2020-10-12 15:37:04,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:37:04,006 INFO L93 Difference]: Finished difference Result 1155 states and 1379 transitions. [2020-10-12 15:37:04,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-12 15:37:04,007 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 65 [2020-10-12 15:37:04,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:37:04,010 INFO L225 Difference]: With dead ends: 1155 [2020-10-12 15:37:04,011 INFO L226 Difference]: Without dead ends: 1153 [2020-10-12 15:37:04,011 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=99, Invalid=603, Unknown=0, NotChecked=0, Total=702 [2020-10-12 15:37:04,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1153 states. [2020-10-12 15:37:04,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1153 to 803. [2020-10-12 15:37:04,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 803 states. [2020-10-12 15:37:04,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 946 transitions. [2020-10-12 15:37:04,080 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 946 transitions. Word has length 65 [2020-10-12 15:37:04,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:37:04,081 INFO L479 AbstractCegarLoop]: Abstraction has 803 states and 946 transitions. [2020-10-12 15:37:04,081 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 15:37:04,081 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 946 transitions. [2020-10-12 15:37:04,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-12 15:37:04,082 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:37:04,082 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:37:04,083 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2020-10-12 15:37:04,083 INFO L427 AbstractCegarLoop]: === Iteration 54 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:37:04,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:37:04,083 INFO L82 PathProgramCache]: Analyzing trace with hash 1055186660, now seen corresponding path program 4 times [2020-10-12 15:37:04,083 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:37:04,084 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2069301355] [2020-10-12 15:37:04,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:37:04,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:37:04,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:37:04,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:37:04,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:37:04,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:37:04,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-12 15:37:04,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 15:37:04,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 674 [2020-10-12 15:37:04,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:37:04,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 15:37:04,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-12 15:37:04,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-12 15:37:04,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:37:04,955 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 36 [2020-10-12 15:37:05,111 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 34 [2020-10-12 15:37:05,230 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 37 [2020-10-12 15:37:05,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:37:05,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:37:05,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:37:05,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:37:05,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:37:05,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:37:05,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:37:05,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:37:05,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:37:05,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:37:05,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:37:05,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:37:05,547 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 13 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:37:05,547 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2069301355] [2020-10-12 15:37:05,547 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:37:05,547 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-12 15:37:05,547 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430087050] [2020-10-12 15:37:05,547 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-12 15:37:05,548 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:37:05,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-12 15:37:05,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2020-10-12 15:37:05,548 INFO L87 Difference]: Start difference. First operand 803 states and 946 transitions. Second operand 14 states. [2020-10-12 15:37:05,691 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 55 [2020-10-12 15:37:06,255 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 54 [2020-10-12 15:37:07,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:37:07,248 INFO L93 Difference]: Finished difference Result 1282 states and 1530 transitions. [2020-10-12 15:37:07,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-12 15:37:07,249 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 67 [2020-10-12 15:37:07,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:37:07,252 INFO L225 Difference]: With dead ends: 1282 [2020-10-12 15:37:07,252 INFO L226 Difference]: Without dead ends: 1132 [2020-10-12 15:37:07,252 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=129, Invalid=521, Unknown=0, NotChecked=0, Total=650 [2020-10-12 15:37:07,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1132 states. [2020-10-12 15:37:07,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1132 to 1072. [2020-10-12 15:37:07,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1072 states. [2020-10-12 15:37:07,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1072 states to 1072 states and 1275 transitions. [2020-10-12 15:37:07,346 INFO L78 Accepts]: Start accepts. Automaton has 1072 states and 1275 transitions. Word has length 67 [2020-10-12 15:37:07,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:37:07,346 INFO L479 AbstractCegarLoop]: Abstraction has 1072 states and 1275 transitions. [2020-10-12 15:37:07,347 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-12 15:37:07,347 INFO L276 IsEmpty]: Start isEmpty. Operand 1072 states and 1275 transitions. [2020-10-12 15:37:07,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-12 15:37:07,348 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:37:07,349 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:37:07,349 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2020-10-12 15:37:07,349 INFO L427 AbstractCegarLoop]: === Iteration 55 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:37:07,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:37:07,349 INFO L82 PathProgramCache]: Analyzing trace with hash -1937253784, now seen corresponding path program 1 times [2020-10-12 15:37:07,349 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:37:07,350 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [725520952] [2020-10-12 15:37:07,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:37:07,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:37:07,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:37:07,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:37:07,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:37:07,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:37:07,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:37:08,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:37:08,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:37:09,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:37:09,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-12 15:37:09,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-12 15:37:09,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1838 [2020-10-12 15:37:09,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:37:09,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 15:37:09,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-12 15:37:09,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-12 15:37:09,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:37:09,434 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 33 [2020-10-12 15:37:09,724 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 43 [2020-10-12 15:37:09,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:37:10,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:37:10,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:37:10,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:37:10,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:37:10,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:37:10,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:37:10,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:37:10,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:37:10,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:37:10,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:37:10,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:37:10,028 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:37:10,029 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [725520952] [2020-10-12 15:37:10,029 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:37:10,029 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-12 15:37:10,029 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842450242] [2020-10-12 15:37:10,029 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 15:37:10,029 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:37:10,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 15:37:10,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-10-12 15:37:10,030 INFO L87 Difference]: Start difference. First operand 1072 states and 1275 transitions. Second operand 13 states. [2020-10-12 15:37:10,537 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 57 [2020-10-12 15:37:10,980 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2020-10-12 15:37:11,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:37:11,810 INFO L93 Difference]: Finished difference Result 1102 states and 1304 transitions. [2020-10-12 15:37:11,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-12 15:37:11,811 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 67 [2020-10-12 15:37:11,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:37:11,815 INFO L225 Difference]: With dead ends: 1102 [2020-10-12 15:37:11,815 INFO L226 Difference]: Without dead ends: 1058 [2020-10-12 15:37:11,816 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=94, Invalid=556, Unknown=0, NotChecked=0, Total=650 [2020-10-12 15:37:11,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1058 states. [2020-10-12 15:37:11,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1058 to 1033. [2020-10-12 15:37:11,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1033 states. [2020-10-12 15:37:11,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1033 states to 1033 states and 1232 transitions. [2020-10-12 15:37:11,943 INFO L78 Accepts]: Start accepts. Automaton has 1033 states and 1232 transitions. Word has length 67 [2020-10-12 15:37:11,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:37:11,943 INFO L479 AbstractCegarLoop]: Abstraction has 1033 states and 1232 transitions. [2020-10-12 15:37:11,943 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 15:37:11,943 INFO L276 IsEmpty]: Start isEmpty. Operand 1033 states and 1232 transitions. [2020-10-12 15:37:11,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-12 15:37:11,944 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:37:11,944 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:37:11,944 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2020-10-12 15:37:11,945 INFO L427 AbstractCegarLoop]: === Iteration 56 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:37:11,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:37:11,945 INFO L82 PathProgramCache]: Analyzing trace with hash -1448901020, now seen corresponding path program 4 times [2020-10-12 15:37:11,945 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:37:11,945 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1042801631] [2020-10-12 15:37:11,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:37:11,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:37:11,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:37:12,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:37:12,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:37:12,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:37:12,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:37:12,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:37:14,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:37:14,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-12 15:37:14,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 15:37:14,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2166 [2020-10-12 15:37:14,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:37:14,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 15:37:14,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-12 15:37:14,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-12 15:37:14,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:37:14,355 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 39 [2020-10-12 15:37:14,594 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 52 [2020-10-12 15:37:14,826 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 41 [2020-10-12 15:37:15,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:37:15,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:37:15,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:37:15,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:37:15,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:37:15,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:37:15,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:37:15,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:37:15,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:37:15,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:37:15,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:37:15,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:37:15,289 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 13 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:37:15,289 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1042801631] [2020-10-12 15:37:15,289 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:37:15,289 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-12 15:37:15,289 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113684583] [2020-10-12 15:37:15,290 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-12 15:37:15,290 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:37:15,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-12 15:37:15,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-10-12 15:37:15,290 INFO L87 Difference]: Start difference. First operand 1033 states and 1232 transitions. Second operand 14 states. [2020-10-12 15:37:15,703 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 54 [2020-10-12 15:37:15,900 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 55 [2020-10-12 15:37:16,096 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 53 [2020-10-12 15:37:16,374 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 59 [2020-10-12 15:37:16,907 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 62 [2020-10-12 15:37:17,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:37:17,776 INFO L93 Difference]: Finished difference Result 1347 states and 1623 transitions. [2020-10-12 15:37:17,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-12 15:37:17,777 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 67 [2020-10-12 15:37:17,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:37:17,781 INFO L225 Difference]: With dead ends: 1347 [2020-10-12 15:37:17,781 INFO L226 Difference]: Without dead ends: 1197 [2020-10-12 15:37:17,782 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=160, Invalid=596, Unknown=0, NotChecked=0, Total=756 [2020-10-12 15:37:17,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1197 states. [2020-10-12 15:37:17,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1197 to 868. [2020-10-12 15:37:17,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 868 states. [2020-10-12 15:37:17,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 868 states to 868 states and 1039 transitions. [2020-10-12 15:37:17,862 INFO L78 Accepts]: Start accepts. Automaton has 868 states and 1039 transitions. Word has length 67 [2020-10-12 15:37:17,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:37:17,862 INFO L479 AbstractCegarLoop]: Abstraction has 868 states and 1039 transitions. [2020-10-12 15:37:17,863 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-12 15:37:17,863 INFO L276 IsEmpty]: Start isEmpty. Operand 868 states and 1039 transitions. [2020-10-12 15:37:17,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-12 15:37:17,864 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:37:17,864 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:37:17,864 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2020-10-12 15:37:17,864 INFO L427 AbstractCegarLoop]: === Iteration 57 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:37:17,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:37:17,864 INFO L82 PathProgramCache]: Analyzing trace with hash 1617025599, now seen corresponding path program 3 times [2020-10-12 15:37:17,864 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:37:17,865 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1911955947] [2020-10-12 15:37:17,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:37:17,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:37:17,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:37:17,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:37:17,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:37:18,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:37:19,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:37:19,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:37:19,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:37:19,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:37:19,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:37:19,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:37:19,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:37:19,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:37:19,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:37:19,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:37:19,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:37:19,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 15:37:19,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-12 15:37:19,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2062 [2020-10-12 15:37:19,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:37:19,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 15:37:19,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:37:19,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-12 15:37:19,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:37:20,233 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 41 [2020-10-12 15:37:20,545 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 44 [2020-10-12 15:37:20,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:37:20,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:37:20,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:37:20,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:37:20,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:37:20,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:37:20,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:37:20,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:37:20,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:37:20,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:37:20,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:37:20,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:37:20,795 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:37:20,795 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1911955947] [2020-10-12 15:37:20,795 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:37:20,795 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-12 15:37:20,795 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367739230] [2020-10-12 15:37:20,796 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 15:37:20,796 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:37:20,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 15:37:20,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-10-12 15:37:20,796 INFO L87 Difference]: Start difference. First operand 868 states and 1039 transitions. Second operand 13 states. [2020-10-12 15:37:23,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:37:23,238 INFO L93 Difference]: Finished difference Result 1208 states and 1424 transitions. [2020-10-12 15:37:23,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-12 15:37:23,238 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 68 [2020-10-12 15:37:23,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:37:23,241 INFO L225 Difference]: With dead ends: 1208 [2020-10-12 15:37:23,241 INFO L226 Difference]: Without dead ends: 1192 [2020-10-12 15:37:23,242 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=161, Invalid=895, Unknown=0, NotChecked=0, Total=1056 [2020-10-12 15:37:23,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1192 states. [2020-10-12 15:37:23,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1192 to 912. [2020-10-12 15:37:23,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 912 states. [2020-10-12 15:37:23,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 912 states to 912 states and 1089 transitions. [2020-10-12 15:37:23,318 INFO L78 Accepts]: Start accepts. Automaton has 912 states and 1089 transitions. Word has length 68 [2020-10-12 15:37:23,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:37:23,318 INFO L479 AbstractCegarLoop]: Abstraction has 912 states and 1089 transitions. [2020-10-12 15:37:23,318 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 15:37:23,318 INFO L276 IsEmpty]: Start isEmpty. Operand 912 states and 1089 transitions. [2020-10-12 15:37:23,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-12 15:37:23,319 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:37:23,319 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:37:23,319 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2020-10-12 15:37:23,319 INFO L427 AbstractCegarLoop]: === Iteration 58 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:37:23,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:37:23,320 INFO L82 PathProgramCache]: Analyzing trace with hash -901717313, now seen corresponding path program 1 times [2020-10-12 15:37:23,320 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:37:23,320 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [156376675] [2020-10-12 15:37:23,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:37:23,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:37:23,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:37:23,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:37:23,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:37:23,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:37:24,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:37:24,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:37:25,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:37:25,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:37:25,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:37:25,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:37:25,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 15:37:25,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-12 15:37:25,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2243 [2020-10-12 15:37:25,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:37:25,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 15:37:25,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:37:25,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-12 15:37:25,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:37:25,873 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 41 [2020-10-12 15:37:26,158 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 46 [2020-10-12 15:37:26,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:37:26,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:37:26,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:37:26,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:37:26,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:37:26,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:37:26,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:37:26,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:37:26,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:37:26,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:37:26,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:37:26,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:37:26,560 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:37:26,560 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [156376675] [2020-10-12 15:37:26,561 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:37:26,561 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-12 15:37:26,562 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534263627] [2020-10-12 15:37:26,563 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-12 15:37:26,563 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:37:26,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-12 15:37:26,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2020-10-12 15:37:26,563 INFO L87 Difference]: Start difference. First operand 912 states and 1089 transitions. Second operand 14 states. [2020-10-12 15:37:28,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:37:28,984 INFO L93 Difference]: Finished difference Result 1023 states and 1202 transitions. [2020-10-12 15:37:28,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-12 15:37:28,985 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 68 [2020-10-12 15:37:28,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:37:28,986 INFO L225 Difference]: With dead ends: 1023 [2020-10-12 15:37:28,986 INFO L226 Difference]: Without dead ends: 1021 [2020-10-12 15:37:28,987 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=106, Invalid=706, Unknown=0, NotChecked=0, Total=812 [2020-10-12 15:37:28,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1021 states. [2020-10-12 15:37:29,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1021 to 960. [2020-10-12 15:37:29,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 960 states. [2020-10-12 15:37:29,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 960 states to 960 states and 1147 transitions. [2020-10-12 15:37:29,060 INFO L78 Accepts]: Start accepts. Automaton has 960 states and 1147 transitions. Word has length 68 [2020-10-12 15:37:29,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:37:29,060 INFO L479 AbstractCegarLoop]: Abstraction has 960 states and 1147 transitions. [2020-10-12 15:37:29,060 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-12 15:37:29,060 INFO L276 IsEmpty]: Start isEmpty. Operand 960 states and 1147 transitions. [2020-10-12 15:37:29,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-12 15:37:29,061 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:37:29,062 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:37:29,062 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2020-10-12 15:37:29,062 INFO L427 AbstractCegarLoop]: === Iteration 59 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:37:29,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:37:29,062 INFO L82 PathProgramCache]: Analyzing trace with hash 1835352474, now seen corresponding path program 3 times [2020-10-12 15:37:29,062 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:37:29,062 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [446732136] [2020-10-12 15:37:29,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:37:29,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:37:29,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:37:29,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:37:29,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:37:29,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:37:29,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:37:29,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:37:29,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:37:30,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:37:30,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:37:30,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:37:30,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:37:30,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:37:34,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:37:34,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 15:37:34,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-12 15:37:34,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-12 15:37:34,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:37:34,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 15:37:34,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 15:37:34,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-12 15:37:34,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:37:34,609 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 72 [2020-10-12 15:37:34,811 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 72 [2020-10-12 15:37:34,935 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 41 [2020-10-12 15:37:35,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:37:35,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:37:35,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:37:35,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:37:35,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:37:35,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:37:35,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:37:35,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:37:35,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:37:35,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:37:35,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:37:35,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:37:35,649 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:37:35,650 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [446732136] [2020-10-12 15:37:35,650 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:37:35,650 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-12 15:37:35,650 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225081465] [2020-10-12 15:37:35,650 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-12 15:37:35,651 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:37:35,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-12 15:37:35,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2020-10-12 15:37:35,651 INFO L87 Difference]: Start difference. First operand 960 states and 1147 transitions. Second operand 16 states. [2020-10-12 15:37:36,137 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 84 [2020-10-12 15:37:36,494 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 82 [2020-10-12 15:37:36,930 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 51 [2020-10-12 15:37:38,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:37:38,314 INFO L93 Difference]: Finished difference Result 1058 states and 1254 transitions. [2020-10-12 15:37:38,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-12 15:37:38,315 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 68 [2020-10-12 15:37:38,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:37:38,317 INFO L225 Difference]: With dead ends: 1058 [2020-10-12 15:37:38,317 INFO L226 Difference]: Without dead ends: 1056 [2020-10-12 15:37:38,317 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=135, Invalid=677, Unknown=0, NotChecked=0, Total=812 [2020-10-12 15:37:38,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1056 states. [2020-10-12 15:37:38,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1056 to 966. [2020-10-12 15:37:38,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 966 states. [2020-10-12 15:37:38,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 966 states to 966 states and 1153 transitions. [2020-10-12 15:37:38,404 INFO L78 Accepts]: Start accepts. Automaton has 966 states and 1153 transitions. Word has length 68 [2020-10-12 15:37:38,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:37:38,404 INFO L479 AbstractCegarLoop]: Abstraction has 966 states and 1153 transitions. [2020-10-12 15:37:38,404 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-12 15:37:38,404 INFO L276 IsEmpty]: Start isEmpty. Operand 966 states and 1153 transitions. [2020-10-12 15:37:38,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-12 15:37:38,405 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:37:38,406 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:37:38,406 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2020-10-12 15:37:38,406 INFO L427 AbstractCegarLoop]: === Iteration 60 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:37:38,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:37:38,406 INFO L82 PathProgramCache]: Analyzing trace with hash -683390438, now seen corresponding path program 1 times [2020-10-12 15:37:38,407 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:37:38,407 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1295586408] [2020-10-12 15:37:38,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:37:38,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:37:38,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:37:38,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:37:38,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:37:38,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:37:38,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:37:39,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:37:39,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:37:39,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:37:39,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:37:40,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:37:40,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:37:41,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:37:43,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:37:43,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 15:37:43,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-12 15:37:43,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-12 15:37:43,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:37:43,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 15:37:43,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:37:43,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-12 15:37:43,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:37:44,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:37:44,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:37:44,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:37:44,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:37:44,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:37:44,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:37:44,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:37:44,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:37:44,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:37:44,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:37:44,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:37:44,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:37:44,097 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:37:44,098 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1295586408] [2020-10-12 15:37:44,098 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:37:44,098 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-12 15:37:44,098 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279073988] [2020-10-12 15:37:44,098 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-12 15:37:44,098 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:37:44,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-12 15:37:44,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2020-10-12 15:37:44,099 INFO L87 Difference]: Start difference. First operand 966 states and 1153 transitions. Second operand 15 states. [2020-10-12 15:37:44,827 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 51 [2020-10-12 15:37:44,955 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 43 [2020-10-12 15:37:45,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:37:45,895 INFO L93 Difference]: Finished difference Result 1667 states and 2000 transitions. [2020-10-12 15:37:45,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-12 15:37:45,896 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 68 [2020-10-12 15:37:45,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:37:45,898 INFO L225 Difference]: With dead ends: 1667 [2020-10-12 15:37:45,898 INFO L226 Difference]: Without dead ends: 1665 [2020-10-12 15:37:45,899 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=161, Invalid=541, Unknown=0, NotChecked=0, Total=702 [2020-10-12 15:37:45,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1665 states. [2020-10-12 15:37:45,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1665 to 1050. [2020-10-12 15:37:45,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1050 states. [2020-10-12 15:37:45,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1050 states to 1050 states and 1248 transitions. [2020-10-12 15:37:45,984 INFO L78 Accepts]: Start accepts. Automaton has 1050 states and 1248 transitions. Word has length 68 [2020-10-12 15:37:45,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:37:45,984 INFO L479 AbstractCegarLoop]: Abstraction has 1050 states and 1248 transitions. [2020-10-12 15:37:45,984 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-12 15:37:45,984 INFO L276 IsEmpty]: Start isEmpty. Operand 1050 states and 1248 transitions. [2020-10-12 15:37:45,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-12 15:37:45,985 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:37:45,985 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:37:45,985 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2020-10-12 15:37:45,986 INFO L427 AbstractCegarLoop]: === Iteration 61 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:37:45,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:37:45,986 INFO L82 PathProgramCache]: Analyzing trace with hash 1518045722, now seen corresponding path program 2 times [2020-10-12 15:37:45,986 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:37:45,986 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1668668860] [2020-10-12 15:37:45,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:37:46,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:37:46,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:37:46,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:37:46,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:37:46,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:37:46,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:37:46,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:37:46,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:37:47,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:37:47,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:37:47,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:37:48,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:37:48,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:37:51,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:37:51,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 15:37:51,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-12 15:37:51,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-12 15:37:51,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:37:51,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 15:37:51,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 15:37:51,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-12 15:37:51,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:37:51,649 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 34 [2020-10-12 15:37:52,256 WARN L193 SmtUtils]: Spent 580.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 51 [2020-10-12 15:37:52,730 WARN L193 SmtUtils]: Spent 452.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 62 [2020-10-12 15:37:53,143 WARN L193 SmtUtils]: Spent 390.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 47 [2020-10-12 15:37:53,299 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 32 [2020-10-12 15:37:53,655 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 40 [2020-10-12 15:37:53,997 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 42 [2020-10-12 15:37:54,333 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 36 [2020-10-12 15:37:54,466 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 26 [2020-10-12 15:37:54,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:37:54,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:37:54,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:37:54,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:37:54,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:37:54,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:37:54,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:37:54,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:37:54,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:37:54,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:37:54,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:37:54,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:37:54,756 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:37:54,756 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1668668860] [2020-10-12 15:37:54,756 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:37:54,756 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-12 15:37:54,756 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634126532] [2020-10-12 15:37:54,757 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-12 15:37:54,757 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:37:54,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-12 15:37:54,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2020-10-12 15:37:54,757 INFO L87 Difference]: Start difference. First operand 1050 states and 1248 transitions. Second operand 16 states. [2020-10-12 15:37:55,255 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 84 [2020-10-12 15:37:55,571 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 61 [2020-10-12 15:37:55,913 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 89 [2020-10-12 15:37:56,424 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 57 [2020-10-12 15:37:56,951 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 65 [2020-10-12 15:37:58,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:37:58,269 INFO L93 Difference]: Finished difference Result 1432 states and 1699 transitions. [2020-10-12 15:37:58,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-12 15:37:58,271 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 68 [2020-10-12 15:37:58,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:37:58,273 INFO L225 Difference]: With dead ends: 1432 [2020-10-12 15:37:58,273 INFO L226 Difference]: Without dead ends: 1430 [2020-10-12 15:37:58,274 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=158, Invalid=712, Unknown=0, NotChecked=0, Total=870 [2020-10-12 15:37:58,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1430 states. [2020-10-12 15:37:58,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1430 to 1030. [2020-10-12 15:37:58,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1030 states. [2020-10-12 15:37:58,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1030 states to 1030 states and 1226 transitions. [2020-10-12 15:37:58,388 INFO L78 Accepts]: Start accepts. Automaton has 1030 states and 1226 transitions. Word has length 68 [2020-10-12 15:37:58,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:37:58,388 INFO L479 AbstractCegarLoop]: Abstraction has 1030 states and 1226 transitions. [2020-10-12 15:37:58,388 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-12 15:37:58,388 INFO L276 IsEmpty]: Start isEmpty. Operand 1030 states and 1226 transitions. [2020-10-12 15:37:58,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-12 15:37:58,389 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:37:58,389 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:37:58,389 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2020-10-12 15:37:58,389 INFO L427 AbstractCegarLoop]: === Iteration 62 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:37:58,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:37:58,390 INFO L82 PathProgramCache]: Analyzing trace with hash -1000697190, now seen corresponding path program 3 times [2020-10-12 15:37:58,390 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:37:58,390 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1177394055] [2020-10-12 15:37:58,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:37:58,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:37:58,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:37:58,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:37:58,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:37:58,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:37:59,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:37:59,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:00,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:00,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:00,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:01,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:02,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:02,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:03,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:03,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 15:38:03,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-12 15:38:03,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-12 15:38:03,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:03,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 15:38:03,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:38:03,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-12 15:38:03,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:38:03,888 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 40 [2020-10-12 15:38:04,052 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 39 [2020-10-12 15:38:04,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:38:04,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:04,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:04,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:04,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:38:04,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:38:04,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:38:04,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:04,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:38:04,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:38:04,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:38:04,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:38:04,358 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:38:04,358 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1177394055] [2020-10-12 15:38:04,359 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:38:04,359 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-12 15:38:04,359 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913222170] [2020-10-12 15:38:04,359 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-12 15:38:04,359 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:38:04,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-12 15:38:04,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2020-10-12 15:38:04,360 INFO L87 Difference]: Start difference. First operand 1030 states and 1226 transitions. Second operand 16 states. [2020-10-12 15:38:05,229 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 49 [2020-10-12 15:38:05,353 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 32 [2020-10-12 15:38:05,486 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 50 [2020-10-12 15:38:05,980 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 52 [2020-10-12 15:38:06,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:38:06,262 INFO L93 Difference]: Finished difference Result 1125 states and 1333 transitions. [2020-10-12 15:38:06,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-12 15:38:06,262 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 68 [2020-10-12 15:38:06,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:38:06,265 INFO L225 Difference]: With dead ends: 1125 [2020-10-12 15:38:06,265 INFO L226 Difference]: Without dead ends: 1123 [2020-10-12 15:38:06,265 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=180, Invalid=690, Unknown=0, NotChecked=0, Total=870 [2020-10-12 15:38:06,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1123 states. [2020-10-12 15:38:06,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1123 to 960. [2020-10-12 15:38:06,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 960 states. [2020-10-12 15:38:06,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 960 states to 960 states and 1146 transitions. [2020-10-12 15:38:06,397 INFO L78 Accepts]: Start accepts. Automaton has 960 states and 1146 transitions. Word has length 68 [2020-10-12 15:38:06,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:38:06,397 INFO L479 AbstractCegarLoop]: Abstraction has 960 states and 1146 transitions. [2020-10-12 15:38:06,398 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-12 15:38:06,398 INFO L276 IsEmpty]: Start isEmpty. Operand 960 states and 1146 transitions. [2020-10-12 15:38:06,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-12 15:38:06,399 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:38:06,399 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1] [2020-10-12 15:38:06,399 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2020-10-12 15:38:06,399 INFO L427 AbstractCegarLoop]: === Iteration 63 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:38:06,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:38:06,400 INFO L82 PathProgramCache]: Analyzing trace with hash 766793789, now seen corresponding path program 5 times [2020-10-12 15:38:06,400 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:38:06,400 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1206826635] [2020-10-12 15:38:06,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:38:06,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:06,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:06,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:06,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:06,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:07,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:07,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking...