/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --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/list-simple/dll2c_insert_equal.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 05:04:47,133 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 05:04:47,139 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 05:04:47,178 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 05:04:47,179 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 05:04:47,187 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 05:04:47,189 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 05:04:47,193 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 05:04:47,196 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 05:04:47,199 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 05:04:47,200 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 05:04:47,201 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 05:04:47,201 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 05:04:47,204 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 05:04:47,206 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 05:04:47,208 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 05:04:47,210 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 05:04:47,211 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 05:04:47,212 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 05:04:47,220 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 05:04:47,223 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 05:04:47,224 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 05:04:47,225 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 05:04:47,226 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 05:04:47,238 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 05:04:47,238 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 05:04:47,239 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 05:04:47,239 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 05:04:47,240 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 05:04:47,243 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 05:04:47,244 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 05:04:47,244 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 05:04:47,245 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 05:04:47,246 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 05:04:47,247 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 05:04:47,247 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 05:04:47,248 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 05:04:47,248 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 05:04:47,248 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 05:04:47,250 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 05:04:47,251 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 05:04:47,252 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 05:04:47,295 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 05:04:47,295 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 05:04:47,297 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 05:04:47,297 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 05:04:47,298 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 05:04:47,298 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 05:04:47,298 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 05:04:47,298 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 05:04:47,298 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 05:04:47,299 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 05:04:47,300 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 05:04:47,300 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 05:04:47,300 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 05:04:47,301 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 05:04:47,301 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 05:04:47,301 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 05:04:47,301 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 05:04:47,302 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 05:04:47,302 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 05:04:47,302 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 05:04:47,302 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 05:04:47,302 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 05:04:47,303 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 05:04:47,303 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 05:04:47,303 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 05:04:47,303 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 05:04:47,303 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 05:04:47,303 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 05:04:47,304 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 05:04:47,304 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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 05:04:47,628 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 05:04:47,643 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 05:04:47,646 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 05:04:47,648 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 05:04:47,648 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 05:04:47,649 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/dll2c_insert_equal.i [2020-10-14 05:04:47,723 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/49846d5b0/733c1da7f9d047d88638a72a2d1043e0/FLAGd1ea70609 [2020-10-14 05:04:48,267 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 05:04:48,268 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-simple/dll2c_insert_equal.i [2020-10-14 05:04:48,281 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/49846d5b0/733c1da7f9d047d88638a72a2d1043e0/FLAGd1ea70609 [2020-10-14 05:04:48,560 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/49846d5b0/733c1da7f9d047d88638a72a2d1043e0 [2020-10-14 05:04:48,570 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 05:04:48,572 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 05:04:48,573 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 05:04:48,573 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 05:04:48,577 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 05:04:48,578 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 05:04:48" (1/1) ... [2020-10-14 05:04:48,581 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d693c5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:04:48, skipping insertion in model container [2020-10-14 05:04:48,581 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 05:04:48" (1/1) ... [2020-10-14 05:04:48,588 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 05:04:48,638 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 05:04:49,139 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 05:04:49,149 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 05:04:49,196 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 05:04:49,260 INFO L208 MainTranslator]: Completed translation [2020-10-14 05:04:49,262 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:04:49 WrapperNode [2020-10-14 05:04:49,262 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 05:04:49,263 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 05:04:49,263 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 05:04:49,263 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 05:04:49,277 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:04:49" (1/1) ... [2020-10-14 05:04:49,279 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:04:49" (1/1) ... [2020-10-14 05:04:49,302 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:04:49" (1/1) ... [2020-10-14 05:04:49,302 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:04:49" (1/1) ... [2020-10-14 05:04:49,324 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:04:49" (1/1) ... [2020-10-14 05:04:49,330 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:04:49" (1/1) ... [2020-10-14 05:04:49,334 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:04:49" (1/1) ... [2020-10-14 05:04:49,341 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 05:04:49,342 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 05:04:49,342 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 05:04:49,342 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 05:04:49,343 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:04:49" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 05:04:49,402 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 05:04:49,403 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 05:04:49,403 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-14 05:04:49,403 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-14 05:04:49,403 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-10-14 05:04:49,403 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2020-10-14 05:04:49,403 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_circular_create [2020-10-14 05:04:49,404 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_circular_destroy [2020-10-14 05:04:49,404 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_circular_insert [2020-10-14 05:04:49,404 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 05:04:49,404 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 05:04:49,404 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-14 05:04:49,404 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-14 05:04:49,405 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-14 05:04:49,405 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-14 05:04:49,405 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-14 05:04:49,405 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-14 05:04:49,405 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-14 05:04:49,405 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-14 05:04:49,405 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-14 05:04:49,406 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-14 05:04:49,406 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-14 05:04:49,406 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-14 05:04:49,406 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-14 05:04:49,406 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-14 05:04:49,406 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-14 05:04:49,407 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-14 05:04:49,407 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-14 05:04:49,407 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-14 05:04:49,407 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-14 05:04:49,407 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-14 05:04:49,407 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-14 05:04:49,407 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-14 05:04:49,408 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-14 05:04:49,408 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-14 05:04:49,408 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-14 05:04:49,408 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-14 05:04:49,408 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-14 05:04:49,408 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-14 05:04:49,408 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-14 05:04:49,409 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-14 05:04:49,409 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-14 05:04:49,409 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-14 05:04:49,409 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-14 05:04:49,409 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-14 05:04:49,409 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-14 05:04:49,409 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-14 05:04:49,410 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-14 05:04:49,410 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-14 05:04:49,410 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-14 05:04:49,410 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-14 05:04:49,410 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-14 05:04:49,410 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-14 05:04:49,410 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-14 05:04:49,411 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-14 05:04:49,411 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-14 05:04:49,411 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-14 05:04:49,411 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-14 05:04:49,411 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-14 05:04:49,411 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-14 05:04:49,411 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-14 05:04:49,412 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-14 05:04:49,412 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-14 05:04:49,412 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-14 05:04:49,412 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-14 05:04:49,412 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-14 05:04:49,412 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-14 05:04:49,412 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-14 05:04:49,412 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-14 05:04:49,413 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-14 05:04:49,413 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-14 05:04:49,413 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-14 05:04:49,413 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 05:04:49,413 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-14 05:04:49,413 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-14 05:04:49,413 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-14 05:04:49,414 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 05:04:49,414 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-14 05:04:49,414 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-14 05:04:49,414 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-14 05:04:49,414 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-14 05:04:49,414 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-14 05:04:49,414 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-14 05:04:49,415 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-14 05:04:49,415 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-14 05:04:49,415 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-14 05:04:49,415 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-14 05:04:49,415 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-14 05:04:49,415 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-14 05:04:49,416 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-14 05:04:49,416 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-14 05:04:49,416 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-14 05:04:49,416 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-14 05:04:49,416 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-14 05:04:49,416 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-14 05:04:49,417 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-14 05:04:49,417 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-14 05:04:49,417 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-14 05:04:49,417 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-14 05:04:49,417 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-14 05:04:49,417 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-14 05:04:49,417 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-14 05:04:49,418 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-14 05:04:49,418 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-14 05:04:49,418 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-14 05:04:49,418 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-14 05:04:49,418 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-14 05:04:49,418 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-14 05:04:49,419 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-14 05:04:49,419 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-14 05:04:49,419 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-14 05:04:49,419 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-14 05:04:49,419 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-14 05:04:49,419 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-14 05:04:49,419 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-14 05:04:49,420 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-14 05:04:49,420 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-10-14 05:04:49,420 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2020-10-14 05:04:49,420 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-14 05:04:49,420 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-14 05:04:49,420 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-14 05:04:49,421 INFO L130 BoogieDeclarations]: Found specification of procedure dll_circular_create [2020-10-14 05:04:49,421 INFO L130 BoogieDeclarations]: Found specification of procedure dll_circular_destroy [2020-10-14 05:04:49,421 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-14 05:04:49,421 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 05:04:49,421 INFO L130 BoogieDeclarations]: Found specification of procedure dll_circular_insert [2020-10-14 05:04:49,421 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 05:04:49,421 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-14 05:04:49,422 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-10-14 05:04:49,422 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-14 05:04:49,422 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 05:04:49,422 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 05:04:49,885 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-10-14 05:04:50,112 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 05:04:50,113 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-10-14 05:04:50,117 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 05:04:50 BoogieIcfgContainer [2020-10-14 05:04:50,117 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 05:04:50,119 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 05:04:50,119 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 05:04:50,122 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 05:04:50,123 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 05:04:48" (1/3) ... [2020-10-14 05:04:50,124 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cd0eb7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 05:04:50, skipping insertion in model container [2020-10-14 05:04:50,124 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:04:49" (2/3) ... [2020-10-14 05:04:50,124 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cd0eb7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 05:04:50, skipping insertion in model container [2020-10-14 05:04:50,124 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 05:04:50" (3/3) ... [2020-10-14 05:04:50,126 INFO L109 eAbstractionObserver]: Analyzing ICFG dll2c_insert_equal.i [2020-10-14 05:04:50,135 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 05:04:50,144 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 05:04:50,159 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 05:04:50,182 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 05:04:50,182 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 05:04:50,182 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 05:04:50,182 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 05:04:50,183 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 05:04:50,183 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 05:04:50,183 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 05:04:50,183 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 05:04:50,200 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states. [2020-10-14 05:04:50,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-14 05:04:50,208 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:04:50,209 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:04:50,210 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:04:50,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:04:50,217 INFO L82 PathProgramCache]: Analyzing trace with hash 1731853532, now seen corresponding path program 1 times [2020-10-14 05:04:50,226 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:04:50,226 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [580838557] [2020-10-14 05:04:50,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:04:50,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:04:50,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:04:50,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:04:50,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:04:51,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:04:51,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:04:51,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-14 05:04:51,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 05:04:51,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 984 [2020-10-14 05:04:51,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:04:51,385 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:04:51,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:04:51,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-14 05:04:51,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:04:51,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 05:04:51,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:04:51,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:04:51,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:04:51,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:04:51,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:04:51,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:04:51,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 05:04:51,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:04:51,446 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:04:51,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:04:51,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:04:51,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:04:51,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:04:51,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:04:51,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:04:51,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:04:51,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:04:51,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 05:04:51,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:04:51,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-14 05:04:51,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:04:51,507 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:04:51,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:04:51,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 05:04:51,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:04:51,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:04:51,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 05:04:51,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:04:51,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:04:51,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:04:51,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:04:51,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:04:51,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 05:04:51,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:04:51,531 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:04:51,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:04:51,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:04:51,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:04:51,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:04:51,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 05:04:51,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:04:51,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:04:51,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:04:51,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:04:51,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 05:04:51,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:04:51,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-14 05:04:51,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:04:51,652 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:04:51,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:04:51,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 05:04:51,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:04:51,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:04:51,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 05:04:51,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:04:51,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:04:51,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:04:51,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:04:51,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:04:51,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 05:04:51,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:04:51,683 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:04:51,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:04:51,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:04:51,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:04:51,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:04:51,696 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-14 05:04:51,697 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [580838557] [2020-10-14 05:04:51,699 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:04:51,700 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 05:04:51,700 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655999543] [2020-10-14 05:04:51,708 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 05:04:51,712 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:04:51,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 05:04:51,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 05:04:51,730 INFO L87 Difference]: Start difference. First operand 57 states. Second operand 4 states. [2020-10-14 05:04:52,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:04:52,006 INFO L93 Difference]: Finished difference Result 103 states and 134 transitions. [2020-10-14 05:04:52,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 05:04:52,008 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 37 [2020-10-14 05:04:52,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:04:52,018 INFO L225 Difference]: With dead ends: 103 [2020-10-14 05:04:52,019 INFO L226 Difference]: Without dead ends: 42 [2020-10-14 05:04:52,023 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 05:04:52,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-14 05:04:52,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-10-14 05:04:52,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-14 05:04:52,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 50 transitions. [2020-10-14 05:04:52,075 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 50 transitions. Word has length 37 [2020-10-14 05:04:52,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:04:52,077 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 50 transitions. [2020-10-14 05:04:52,078 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 05:04:52,078 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 50 transitions. [2020-10-14 05:04:52,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-14 05:04:52,080 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:04:52,080 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:04:52,081 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 05:04:52,081 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:04:52,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:04:52,082 INFO L82 PathProgramCache]: Analyzing trace with hash -1838199702, now seen corresponding path program 1 times [2020-10-14 05:04:52,082 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:04:52,082 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [970141291] [2020-10-14 05:04:52,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:04:52,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:04:52,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:04:52,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:04:52,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:04:53,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:04:53,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-14 05:04:53,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 05:04:53,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1576 [2020-10-14 05:04:53,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:04:53,683 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:04:53,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:04:53,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-14 05:04:53,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-14 05:04:53,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:04:53,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:04:53,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:04:53,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:04:53,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:04:53,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:04:53,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:04:53,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 05:04:53,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:04:53,720 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:04:53,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:04:53,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:04:53,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:04:53,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:04:53,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:04:53,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:04:53,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:04:53,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:04:53,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 05:04:53,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:04:53,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 05:04:53,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:04:53,761 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:04:53,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:04:53,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:04:53,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:04:53,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:04:53,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 05:04:53,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:04:53,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:04:53,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:04:53,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:04:53,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:04:53,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 05:04:53,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:04:53,782 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:04:53,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:04:53,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:04:53,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:04:53,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:04:53,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 05:04:53,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:04:53,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:04:53,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:04:53,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 05:04:53,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:04:53,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-14 05:04:53,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:04:53,858 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:04:53,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:04:53,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 05:04:53,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-14 05:04:53,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:04:53,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 05:04:53,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:04:53,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:04:53,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:04:53,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:04:53,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:04:53,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 05:04:53,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:04:53,893 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:04:53,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:04:53,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:04:53,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:04:53,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:04:53,901 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-14 05:04:53,902 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [970141291] [2020-10-14 05:04:53,903 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:04:53,903 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 05:04:53,903 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574030233] [2020-10-14 05:04:53,906 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 05:04:53,907 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:04:53,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 05:04:53,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 05:04:53,907 INFO L87 Difference]: Start difference. First operand 42 states and 50 transitions. Second operand 5 states. [2020-10-14 05:04:54,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:04:54,111 INFO L93 Difference]: Finished difference Result 56 states and 67 transitions. [2020-10-14 05:04:54,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 05:04:54,112 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 37 [2020-10-14 05:04:54,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:04:54,115 INFO L225 Difference]: With dead ends: 56 [2020-10-14 05:04:54,115 INFO L226 Difference]: Without dead ends: 46 [2020-10-14 05:04:54,117 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 05:04:54,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-14 05:04:54,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 44. [2020-10-14 05:04:54,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-10-14 05:04:54,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2020-10-14 05:04:54,127 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 37 [2020-10-14 05:04:54,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:04:54,128 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2020-10-14 05:04:54,128 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 05:04:54,128 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2020-10-14 05:04:54,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-14 05:04:54,130 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:04:54,130 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:04:54,130 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 05:04:54,130 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:04:54,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:04:54,131 INFO L82 PathProgramCache]: Analyzing trace with hash 651262008, now seen corresponding path program 1 times [2020-10-14 05:04:54,131 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:04:54,131 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1516741622] [2020-10-14 05:04:54,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:04:54,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:04:54,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:04:54,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:04:54,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:04:56,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:04:56,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-14 05:04:56,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 05:04:56,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2575 [2020-10-14 05:04:56,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:04:56,729 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:04:56,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 05:04:56,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 05:04:56,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 05:04:56,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 05:04:56,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:04:56,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:04:56,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:04:56,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:04:56,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:04:56,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:04:56,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 05:04:56,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:04:56,775 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:04:56,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:04:56,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:04:56,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:04:56,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:04:56,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:04:56,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:04:56,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:04:56,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:04:56,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 05:04:56,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:04:56,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-14 05:04:56,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:04:56,852 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:04:56,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 05:04:56,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 05:04:56,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 05:04:56,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:04:56,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 05:04:56,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:04:56,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:04:56,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:04:56,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:04:56,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:04:56,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 05:04:56,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:04:56,902 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:04:56,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:04:56,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:04:56,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 05:04:56,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:04:56,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 05:04:56,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:04:56,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:04:56,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:04:56,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 05:04:56,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:04:56,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-14 05:04:56,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:04:56,941 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:04:56,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:04:56,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-14 05:04:56,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:04:56,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:04:56,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 05:04:56,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:04:56,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:04:56,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:04:56,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:04:56,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:04:56,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 05:04:56,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:04:56,958 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:04:56,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:04:56,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:04:56,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:04:56,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:04:56,966 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-14 05:04:56,966 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1516741622] [2020-10-14 05:04:56,966 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:04:56,967 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-14 05:04:56,967 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980773576] [2020-10-14 05:04:56,967 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 05:04:56,968 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:04:56,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 05:04:56,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-14 05:04:56,968 INFO L87 Difference]: Start difference. First operand 44 states and 53 transitions. Second operand 7 states. [2020-10-14 05:04:57,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:04:57,188 INFO L93 Difference]: Finished difference Result 78 states and 95 transitions. [2020-10-14 05:04:57,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 05:04:57,188 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 38 [2020-10-14 05:04:57,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:04:57,190 INFO L225 Difference]: With dead ends: 78 [2020-10-14 05:04:57,190 INFO L226 Difference]: Without dead ends: 49 [2020-10-14 05:04:57,191 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-14 05:04:57,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-10-14 05:04:57,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 45. [2020-10-14 05:04:57,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-14 05:04:57,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 54 transitions. [2020-10-14 05:04:57,199 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 54 transitions. Word has length 38 [2020-10-14 05:04:57,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:04:57,200 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 54 transitions. [2020-10-14 05:04:57,200 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 05:04:57,200 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 54 transitions. [2020-10-14 05:04:57,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-14 05:04:57,202 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:04:57,202 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:04:57,202 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 05:04:57,203 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:04:57,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:04:57,203 INFO L82 PathProgramCache]: Analyzing trace with hash 1124252396, now seen corresponding path program 1 times [2020-10-14 05:04:57,203 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:04:57,204 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [450742515] [2020-10-14 05:04:57,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:04:57,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:04:57,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:00,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:05:00,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-14 05:05:00,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:05:00,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3583 [2020-10-14 05:05:00,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:05:00,833 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:05:00,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-14 05:05:00,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 05:05:00,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-14 05:05:00,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:05:01,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:05:01,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:05:01,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:01,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:05:01,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:05:01,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:05:01,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:05:01,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:05:01,112 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:05:01,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:05:01,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:05:01,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:05:01,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:05:01,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:05:01,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:05:01,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:01,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:05:01,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-14 05:05:01,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:05:01,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 618 [2020-10-14 05:05:01,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:05:01,770 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:05:01,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-14 05:05:01,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:05:01,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-14 05:05:01,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:05:02,376 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 [2020-10-14 05:05:02,691 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 51 [2020-10-14 05:05:02,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 05:05:02,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:05:02,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:02,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:05:02,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:05:02,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:05:02,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-14 05:05:02,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:05:02,795 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:05:02,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 05:05:02,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:05:02,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 05:05:02,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:05:02,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-14 05:05:02,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:05:02,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:02,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:05:02,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:05:02,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:05:02,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-14 05:05:02,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:05:02,904 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:05:02,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 05:05:02,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:05:02,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 05:05:02,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 05:05:02,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 05:05:03,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:05:03,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:03,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:05:03,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 05:05:03,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:05:03,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 534 [2020-10-14 05:05:03,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:05:03,550 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:05:03,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 05:05:03,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 05:05:03,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 05:05:03,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 05:05:06,532 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 45 [2020-10-14 05:05:06,894 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 56 [2020-10-14 05:05:08,842 WARN L193 SmtUtils]: Spent 1.55 s on a formula simplification. DAG size of input: 155 DAG size of output: 130 [2020-10-14 05:05:16,632 WARN L193 SmtUtils]: Spent 6.04 s on a formula simplification. DAG size of input: 245 DAG size of output: 182 [2020-10-14 05:05:16,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 05:05:16,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:05:16,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:16,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:05:16,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:05:16,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:05:16,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-14 05:05:16,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:05:16,712 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:05:16,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 05:05:16,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 05:05:16,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 05:05:16,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:05:17,247 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 40 [2020-10-14 05:05:17,335 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 05:05:17,338 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [450742515] [2020-10-14 05:05:17,339 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:05:17,339 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-14 05:05:17,339 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642126901] [2020-10-14 05:05:17,341 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-14 05:05:17,341 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:05:17,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-14 05:05:17,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=740, Unknown=0, NotChecked=0, Total=812 [2020-10-14 05:05:17,343 INFO L87 Difference]: Start difference. First operand 45 states and 54 transitions. Second operand 29 states. [2020-10-14 05:05:20,192 WARN L193 SmtUtils]: Spent 1.65 s on a formula simplification that was a NOOP. DAG size: 186 [2020-10-14 05:05:23,616 WARN L193 SmtUtils]: Spent 1.59 s on a formula simplification that was a NOOP. DAG size: 191 [2020-10-14 05:05:26,460 WARN L193 SmtUtils]: Spent 2.01 s on a formula simplification that was a NOOP. DAG size: 195 [2020-10-14 05:05:30,873 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 67 [2020-10-14 05:05:31,273 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 84 [2020-10-14 05:05:40,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:05:40,426 INFO L93 Difference]: Finished difference Result 75 states and 95 transitions. [2020-10-14 05:05:40,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-14 05:05:40,428 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 48 [2020-10-14 05:05:40,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:05:40,431 INFO L225 Difference]: With dead ends: 75 [2020-10-14 05:05:40,432 INFO L226 Difference]: Without dead ends: 73 [2020-10-14 05:05:40,433 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 323 ImplicationChecksByTransitivity, 21.1s TimeCoverageRelationStatistics Valid=161, Invalid=1731, Unknown=0, NotChecked=0, Total=1892 [2020-10-14 05:05:40,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-10-14 05:05:40,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 62. [2020-10-14 05:05:40,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-10-14 05:05:40,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 78 transitions. [2020-10-14 05:05:40,453 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 78 transitions. Word has length 48 [2020-10-14 05:05:40,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:05:40,453 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 78 transitions. [2020-10-14 05:05:40,453 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-14 05:05:40,454 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 78 transitions. [2020-10-14 05:05:40,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-14 05:05:40,455 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:05:40,455 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:05:40,455 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 05:05:40,456 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:05:40,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:05:40,456 INFO L82 PathProgramCache]: Analyzing trace with hash 1690553436, now seen corresponding path program 1 times [2020-10-14 05:05:40,456 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:05:40,457 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [283437917] [2020-10-14 05:05:40,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:05:40,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:05:40,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:40,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:41,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:43,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:05:43,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-14 05:05:43,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 05:05:43,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3312 [2020-10-14 05:05:43,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:05:43,794 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:05:43,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 05:05:43,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 05:05:43,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-14 05:05:43,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:05:43,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:05:43,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:05:43,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:43,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:05:43,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:05:43,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:05:43,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:05:43,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:05:43,831 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:05:43,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:05:43,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:05:43,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:05:43,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:05:43,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:05:43,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:05:43,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:43,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:43,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:05:43,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-14 05:05:43,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:05:43,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-14 05:05:43,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:05:43,942 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:05:43,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:05:43,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:05:43,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 05:05:43,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:05:43,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 05:05:43,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:05:43,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:43,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:05:43,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:05:43,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:05:43,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 05:05:43,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:05:43,959 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:05:43,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:05:43,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:05:43,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:05:43,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:05:43,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-14 05:05:43,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:05:43,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:43,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:05:43,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:05:43,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:05:43,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 05:05:43,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:05:43,970 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:05:43,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:05:43,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:05:43,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:05:43,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:05:43,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 05:05:43,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:05:43,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:44,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:05:44,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 05:05:44,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:05:44,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-14 05:05:44,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:05:44,046 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:05:44,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 05:05:44,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 05:05:44,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 05:05:44,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:05:44,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 05:05:44,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:05:44,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:44,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:05:44,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:05:44,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:05:44,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 05:05:44,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:05:44,088 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:05:44,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:05:44,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:05:44,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 05:05:44,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:05:44,096 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-14 05:05:44,096 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [283437917] [2020-10-14 05:05:44,096 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:05:44,097 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-14 05:05:44,097 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912386511] [2020-10-14 05:05:44,097 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 05:05:44,097 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:05:44,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 05:05:44,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-14 05:05:44,098 INFO L87 Difference]: Start difference. First operand 62 states and 78 transitions. Second operand 7 states. [2020-10-14 05:05:44,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:05:44,327 INFO L93 Difference]: Finished difference Result 74 states and 93 transitions. [2020-10-14 05:05:44,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 05:05:44,328 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 49 [2020-10-14 05:05:44,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:05:44,331 INFO L225 Difference]: With dead ends: 74 [2020-10-14 05:05:44,331 INFO L226 Difference]: Without dead ends: 61 [2020-10-14 05:05:44,334 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-14 05:05:44,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-10-14 05:05:44,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2020-10-14 05:05:44,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-14 05:05:44,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 76 transitions. [2020-10-14 05:05:44,360 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 76 transitions. Word has length 49 [2020-10-14 05:05:44,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:05:44,360 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 76 transitions. [2020-10-14 05:05:44,360 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 05:05:44,361 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 76 transitions. [2020-10-14 05:05:44,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-14 05:05:44,368 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:05:44,369 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:05:44,369 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 05:05:44,369 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:05:44,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:05:44,370 INFO L82 PathProgramCache]: Analyzing trace with hash -2002003466, now seen corresponding path program 2 times [2020-10-14 05:05:44,371 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:05:44,371 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [971433135] [2020-10-14 05:05:44,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:05:44,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:05:44,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:44,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:45,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:05:45,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-14 05:05:45,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:05:45,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 698 [2020-10-14 05:05:45,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:05:45,098 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:05:45,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 05:05:45,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 05:05:45,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-14 05:05:45,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:05:45,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:05:45,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:05:45,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:45,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:05:45,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:05:45,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:05:45,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:05:45,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:05:45,136 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:05:45,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:05:45,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:05:45,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:05:45,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 05:05:45,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:05:45,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:05:45,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:45,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:45,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:05:45,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-14 05:05:45,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:05:45,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-10-14 05:05:45,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:05:45,320 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:05:45,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:05:45,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:05:45,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 05:05:45,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:05:45,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 05:05:45,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:05:45,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:45,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:05:45,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:05:45,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:05:45,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 05:05:45,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:05:45,342 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:05:45,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:05:45,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:05:45,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:05:45,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:05:45,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-14 05:05:45,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:05:45,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:45,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:05:45,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:05:45,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:05:45,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 05:05:45,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:05:45,357 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:05:45,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:05:45,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:05:45,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:05:45,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:05:45,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 05:05:45,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:05:45,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:45,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:05:45,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 05:05:45,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:05:45,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-14 05:05:45,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:05:45,450 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:05:45,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 05:05:45,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 05:05:45,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 05:05:45,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:05:45,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 05:05:45,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:05:45,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:45,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:05:45,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:05:45,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:05:45,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 05:05:45,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:05:45,514 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:05:45,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:05:45,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:05:45,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 05:05:45,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:05:45,527 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-14 05:05:45,528 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [971433135] [2020-10-14 05:05:45,528 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:05:45,528 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 05:05:45,528 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387088035] [2020-10-14 05:05:45,529 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 05:05:45,529 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:05:45,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 05:05:45,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-14 05:05:45,530 INFO L87 Difference]: Start difference. First operand 61 states and 76 transitions. Second operand 8 states. [2020-10-14 05:05:45,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:05:45,898 INFO L93 Difference]: Finished difference Result 73 states and 91 transitions. [2020-10-14 05:05:45,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 05:05:45,899 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 49 [2020-10-14 05:05:45,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:05:45,900 INFO L225 Difference]: With dead ends: 73 [2020-10-14 05:05:45,900 INFO L226 Difference]: Without dead ends: 59 [2020-10-14 05:05:45,901 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-10-14 05:05:45,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-10-14 05:05:45,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2020-10-14 05:05:45,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-14 05:05:45,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 71 transitions. [2020-10-14 05:05:45,912 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 71 transitions. Word has length 49 [2020-10-14 05:05:45,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:05:45,913 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 71 transitions. [2020-10-14 05:05:45,913 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 05:05:45,913 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 71 transitions. [2020-10-14 05:05:45,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-14 05:05:45,914 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:05:45,914 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:05:45,914 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 05:05:45,915 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:05:45,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:05:45,915 INFO L82 PathProgramCache]: Analyzing trace with hash -734097774, now seen corresponding path program 1 times [2020-10-14 05:05:45,915 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:05:45,916 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1232417513] [2020-10-14 05:05:45,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:05:45,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:05:45,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:46,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:46,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:48,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:50,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:05:50,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-14 05:05:50,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 05:05:50,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-14 05:05:50,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:05:50,967 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:05:50,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 05:05:50,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-10-14 05:05:50,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 05:05:50,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:05:50,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:05:50,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:05:50,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:50,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:05:51,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:05:51,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:05:51,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:05:51,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:05:51,000 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:05:51,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:05:51,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:05:51,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:05:51,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:05:51,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:05:51,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:05:51,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:51,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:05:51,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-14 05:05:51,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:05:51,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 05:05:51,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:05:51,037 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:05:51,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:05:51,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:05:51,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:05:51,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:05:51,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 05:05:51,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:05:51,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:51,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:05:51,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:05:51,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:05:51,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 05:05:51,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:05:51,054 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:05:51,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:05:51,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:05:51,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:05:51,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:05:51,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-14 05:05:51,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:05:51,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:51,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:05:51,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:05:51,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:05:51,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 05:05:51,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:05:51,065 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:05:51,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:05:51,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:05:51,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:05:51,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:05:51,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 05:05:51,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:05:51,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:51,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:05:51,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 05:05:51,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:05:51,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-14 05:05:51,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:05:51,155 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:05:51,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 05:05:51,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 05:05:51,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 05:05:51,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:05:51,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 05:05:51,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:05:51,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:51,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:05:51,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:05:51,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:05:51,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 05:05:51,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:05:51,229 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:05:51,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:05:51,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:05:51,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:05:51,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:05:51,238 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-14 05:05:51,239 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1232417513] [2020-10-14 05:05:51,239 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:05:51,239 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 05:05:51,239 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888225628] [2020-10-14 05:05:51,240 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 05:05:51,240 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:05:51,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 05:05:51,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-14 05:05:51,241 INFO L87 Difference]: Start difference. First operand 59 states and 71 transitions. Second operand 7 states. [2020-10-14 05:05:51,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:05:51,522 INFO L93 Difference]: Finished difference Result 70 states and 84 transitions. [2020-10-14 05:05:51,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 05:05:51,523 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 50 [2020-10-14 05:05:51,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:05:51,525 INFO L225 Difference]: With dead ends: 70 [2020-10-14 05:05:51,525 INFO L226 Difference]: Without dead ends: 59 [2020-10-14 05:05:51,526 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-14 05:05:51,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-10-14 05:05:51,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2020-10-14 05:05:51,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-14 05:05:51,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 70 transitions. [2020-10-14 05:05:51,545 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 70 transitions. Word has length 50 [2020-10-14 05:05:51,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:05:51,545 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 70 transitions. [2020-10-14 05:05:51,545 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 05:05:51,546 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 70 transitions. [2020-10-14 05:05:51,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-14 05:05:51,548 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:05:51,548 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:05:51,548 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 05:05:51,549 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:05:51,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:05:51,549 INFO L82 PathProgramCache]: Analyzing trace with hash -1543444400, now seen corresponding path program 1 times [2020-10-14 05:05:51,550 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:05:51,550 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [89181154] [2020-10-14 05:05:51,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:05:51,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:05:51,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:51,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:52,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:52,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:53,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:56,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:05:56,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-14 05:05:56,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 05:05:56,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 05:05:56,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:05:56,575 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:05:56,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 05:05:56,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 05:05:56,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-14 05:05:56,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:05:56,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:05:56,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:05:56,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:56,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:05:56,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:05:56,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:05:56,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:05:56,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:05:56,649 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:05:56,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:05:56,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:05:56,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:05:56,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:05:56,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:05:56,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:05:56,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:56,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:05:56,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-14 05:05:56,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:05:56,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-14 05:05:56,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:05:56,704 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:05:56,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:05:56,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:05:56,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 05:05:56,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:05:56,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 05:05:56,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:05:56,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:56,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:05:56,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:05:56,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:05:56,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:05:56,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:05:56,718 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:05:56,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:05:56,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:05:56,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:05:56,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:05:56,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-14 05:05:56,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:05:56,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:56,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:05:56,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:05:56,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:05:56,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 05:05:56,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:05:56,727 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:05:56,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:05:56,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:05:56,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:05:56,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:05:56,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 05:05:56,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:05:56,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:56,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:05:56,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 05:05:56,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:05:56,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-14 05:05:56,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:05:56,828 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:05:56,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 05:05:56,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:05:56,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 05:05:56,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:05:57,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 05:05:57,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:05:57,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:57,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:05:57,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:05:57,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:05:57,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-14 05:05:57,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:05:57,064 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:05:57,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 05:05:57,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:05:57,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 05:05:57,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:05:57,137 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-14 05:05:57,138 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [89181154] [2020-10-14 05:05:57,138 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:05:57,138 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-14 05:05:57,139 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346984015] [2020-10-14 05:05:57,139 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 05:05:57,139 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:05:57,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 05:05:57,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2020-10-14 05:05:57,140 INFO L87 Difference]: Start difference. First operand 59 states and 70 transitions. Second operand 14 states. [2020-10-14 05:05:57,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:05:57,936 INFO L93 Difference]: Finished difference Result 71 states and 83 transitions. [2020-10-14 05:05:57,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 05:05:57,937 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 50 [2020-10-14 05:05:57,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:05:57,939 INFO L225 Difference]: With dead ends: 71 [2020-10-14 05:05:57,939 INFO L226 Difference]: Without dead ends: 69 [2020-10-14 05:05:57,940 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=69, Invalid=437, Unknown=0, NotChecked=0, Total=506 [2020-10-14 05:05:57,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-10-14 05:05:57,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 59. [2020-10-14 05:05:57,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-14 05:05:57,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 70 transitions. [2020-10-14 05:05:57,950 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 70 transitions. Word has length 50 [2020-10-14 05:05:57,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:05:57,950 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 70 transitions. [2020-10-14 05:05:57,950 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 05:05:57,951 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 70 transitions. [2020-10-14 05:05:57,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-14 05:05:57,951 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:05:57,951 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:05:57,952 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 05:05:57,952 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:05:57,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:05:57,952 INFO L82 PathProgramCache]: Analyzing trace with hash 449588234, now seen corresponding path program 1 times [2020-10-14 05:05:57,952 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:05:57,953 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [219741981] [2020-10-14 05:05:57,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:05:57,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:05:57,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:58,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:06:02,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:06:02,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-14 05:06:02,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:06:02,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 05:06:02,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:06:02,983 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:06:02,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-14 05:06:02,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 05:06:02,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-14 05:06:02,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:06:03,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:06:03,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:06:03,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:06:03,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:06:03,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:06:03,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:06:03,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:06:03,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:06:03,173 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:06:03,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:06:03,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:06:03,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:06:03,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:06:03,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:06:03,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:06:03,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:06:03,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:06:03,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-14 05:06:03,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:06:03,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-10-14 05:06:03,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:06:03,348 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:06:03,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 05:06:03,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:06:03,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 05:06:03,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:06:03,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 05:06:03,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:06:03,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:06:03,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:06:03,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:06:03,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:06:03,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 05:06:03,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:06:03,434 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:06:03,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:06:03,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:06:03,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:06:03,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:06:03,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-14 05:06:03,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:06:03,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:06:03,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:06:03,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:06:03,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:06:03,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 05:06:03,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:06:03,456 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:06:03,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 05:06:03,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:06:03,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 05:06:03,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:06:03,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 05:06:03,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:06:03,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:06:03,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:06:03,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 05:06:03,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:06:03,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 291 [2020-10-14 05:06:03,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:06:03,811 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:06:03,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 05:06:03,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 05:06:03,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 05:06:03,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:06:06,162 WARN L193 SmtUtils]: Spent 1.67 s on a formula simplification. DAG size of input: 152 DAG size of output: 110 [2020-10-14 05:06:06,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 05:06:06,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:06:06,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:06:06,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:06:06,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:06:06,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:06:06,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-14 05:06:06,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:06:06,402 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:06:06,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 05:06:06,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 05:06:06,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 05:06:06,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:06:06,598 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 05:06:06,598 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [219741981] [2020-10-14 05:06:06,599 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:06:06,599 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-14 05:06:06,599 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533537659] [2020-10-14 05:06:06,600 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-14 05:06:06,600 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:06:06,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-14 05:06:06,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=505, Unknown=0, NotChecked=0, Total=552 [2020-10-14 05:06:06,601 INFO L87 Difference]: Start difference. First operand 59 states and 70 transitions. Second operand 24 states. [2020-10-14 05:06:08,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:06:08,497 INFO L93 Difference]: Finished difference Result 82 states and 94 transitions. [2020-10-14 05:06:08,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-14 05:06:08,498 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 51 [2020-10-14 05:06:08,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:06:08,500 INFO L225 Difference]: With dead ends: 82 [2020-10-14 05:06:08,500 INFO L226 Difference]: Without dead ends: 79 [2020-10-14 05:06:08,502 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=100, Invalid=1022, Unknown=0, NotChecked=0, Total=1122 [2020-10-14 05:06:08,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-10-14 05:06:08,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 66. [2020-10-14 05:06:08,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-14 05:06:08,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 78 transitions. [2020-10-14 05:06:08,513 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 78 transitions. Word has length 51 [2020-10-14 05:06:08,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:06:08,514 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 78 transitions. [2020-10-14 05:06:08,514 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-14 05:06:08,514 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 78 transitions. [2020-10-14 05:06:08,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-14 05:06:08,515 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:06:08,515 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:06:08,515 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 05:06:08,515 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:06:08,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:06:08,516 INFO L82 PathProgramCache]: Analyzing trace with hash 1052375106, now seen corresponding path program 1 times [2020-10-14 05:06:08,516 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:06:08,516 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1998932433] [2020-10-14 05:06:08,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:06:08,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:06:08,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:06:10,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:06:10,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-14 05:06:10,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:06:10,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2447 [2020-10-14 05:06:10,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:06:10,995 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:06:10,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-14 05:06:10,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 05:06:10,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-14 05:06:10,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:06:11,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:06:11,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:06:11,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:06:11,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:06:11,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:06:11,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:06:11,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:06:11,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:06:11,213 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:06:11,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:06:11,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:06:11,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:06:11,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:06:11,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:06:11,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:06:11,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:06:11,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:06:11,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-14 05:06:11,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:06:11,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 235 [2020-10-14 05:06:11,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:06:11,484 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:06:11,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 05:06:11,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:06:11,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 05:06:11,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:06:12,018 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 36 [2020-10-14 05:06:12,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 05:06:12,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:06:12,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:06:12,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:06:12,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:06:12,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:06:12,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 05:06:12,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:06:12,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:06:12,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 05:06:12,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:06:12,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 05:06:12,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:06:12,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-14 05:06:12,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:06:12,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:06:12,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:06:12,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:06:12,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:06:12,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 05:06:12,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:06:12,179 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:06:12,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 05:06:12,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:06:12,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 05:06:12,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:06:12,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 05:06:12,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:06:12,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:06:12,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:06:12,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 05:06:12,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:06:12,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 211 [2020-10-14 05:06:12,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:06:12,497 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:06:12,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 05:06:12,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 05:06:12,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 05:06:12,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:06:14,431 WARN L193 SmtUtils]: Spent 1.28 s on a formula simplification. DAG size of input: 119 DAG size of output: 89 [2020-10-14 05:06:14,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 05:06:14,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:06:14,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:06:14,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:06:14,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:06:14,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:06:14,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-14 05:06:14,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:06:14,566 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:06:14,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 05:06:14,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 05:06:14,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 05:06:14,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:06:14,896 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 05:06:14,897 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1998932433] [2020-10-14 05:06:14,897 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:06:14,898 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-14 05:06:14,898 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863735489] [2020-10-14 05:06:14,899 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-14 05:06:14,899 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:06:14,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-14 05:06:14,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=750, Unknown=0, NotChecked=0, Total=812 [2020-10-14 05:06:14,900 INFO L87 Difference]: Start difference. First operand 66 states and 78 transitions. Second operand 29 states. [2020-10-14 05:06:16,335 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 65 [2020-10-14 05:06:17,322 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-10-14 05:06:18,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:06:18,780 INFO L93 Difference]: Finished difference Result 80 states and 94 transitions. [2020-10-14 05:06:18,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-14 05:06:18,782 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 52 [2020-10-14 05:06:18,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:06:18,784 INFO L225 Difference]: With dead ends: 80 [2020-10-14 05:06:18,785 INFO L226 Difference]: Without dead ends: 78 [2020-10-14 05:06:18,786 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=127, Invalid=1513, Unknown=0, NotChecked=0, Total=1640 [2020-10-14 05:06:18,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-10-14 05:06:18,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 68. [2020-10-14 05:06:18,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-10-14 05:06:18,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 80 transitions. [2020-10-14 05:06:18,798 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 80 transitions. Word has length 52 [2020-10-14 05:06:18,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:06:18,799 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 80 transitions. [2020-10-14 05:06:18,799 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-14 05:06:18,799 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 80 transitions. [2020-10-14 05:06:18,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-14 05:06:18,800 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:06:18,800 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:06:18,800 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 05:06:18,801 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:06:18,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:06:18,801 INFO L82 PathProgramCache]: Analyzing trace with hash 1169183782, now seen corresponding path program 1 times [2020-10-14 05:06:18,801 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:06:18,801 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1902550545] [2020-10-14 05:06:18,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:06:18,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:06:18,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:06:18,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:06:19,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:06:19,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:06:20,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:06:23,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:06:23,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-14 05:06:23,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 05:06:23,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4335 [2020-10-14 05:06:23,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:06:23,156 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:06:23,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-14 05:06:23,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 05:06:23,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-14 05:06:23,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:06:23,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:06:23,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:06:23,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:06:23,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:06:23,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:06:23,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:06:23,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:06:23,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:06:23,209 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:06:23,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:06:23,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:06:23,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:06:23,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:06:23,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:06:23,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:06:23,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:06:23,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:06:23,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-14 05:06:23,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:06:23,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-14 05:06:23,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:06:23,334 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:06:23,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 05:06:23,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:06:23,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 05:06:23,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:06:23,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 05:06:23,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:06:23,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:06:23,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:06:23,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:06:23,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:06:23,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 05:06:23,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:06:23,417 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:06:23,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:06:23,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:06:23,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:06:23,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:06:23,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-14 05:06:23,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:06:23,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:06:23,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:06:23,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:06:23,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:06:23,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 05:06:23,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:06:23,431 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:06:23,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 05:06:23,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:06:23,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 05:06:23,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:06:23,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 05:06:23,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:06:23,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:06:23,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:06:23,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:06:23,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 05:06:23,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:06:23,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 190 [2020-10-14 05:06:23,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:06:23,679 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:06:23,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 05:06:23,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 05:06:23,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 05:06:23,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:06:23,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 05:06:23,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:06:23,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:06:23,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:06:23,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:06:23,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:06:23,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 05:06:23,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:06:23,824 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:06:23,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 05:06:23,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 05:06:23,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 05:06:23,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:06:23,923 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 05:06:23,924 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1902550545] [2020-10-14 05:06:23,924 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:06:23,924 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-14 05:06:23,924 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282421985] [2020-10-14 05:06:23,925 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-14 05:06:23,925 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:06:23,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-14 05:06:23,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=301, Unknown=0, NotChecked=0, Total=342 [2020-10-14 05:06:23,925 INFO L87 Difference]: Start difference. First operand 68 states and 80 transitions. Second operand 19 states. [2020-10-14 05:06:25,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:06:25,003 INFO L93 Difference]: Finished difference Result 109 states and 127 transitions. [2020-10-14 05:06:25,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 05:06:25,004 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 53 [2020-10-14 05:06:25,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:06:25,005 INFO L225 Difference]: With dead ends: 109 [2020-10-14 05:06:25,005 INFO L226 Difference]: Without dead ends: 63 [2020-10-14 05:06:25,006 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=95, Invalid=717, Unknown=0, NotChecked=0, Total=812 [2020-10-14 05:06:25,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-10-14 05:06:25,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2020-10-14 05:06:25,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-10-14 05:06:25,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 72 transitions. [2020-10-14 05:06:25,015 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 72 transitions. Word has length 53 [2020-10-14 05:06:25,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:06:25,015 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 72 transitions. [2020-10-14 05:06:25,015 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-14 05:06:25,016 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 72 transitions. [2020-10-14 05:06:25,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-14 05:06:25,016 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:06:25,016 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 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] [2020-10-14 05:06:25,017 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 05:06:25,017 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:06:25,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:06:25,017 INFO L82 PathProgramCache]: Analyzing trace with hash 1020734624, now seen corresponding path program 3 times [2020-10-14 05:06:25,017 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:06:25,017 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [943447077] [2020-10-14 05:06:25,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:06:25,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:06:25,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:06:25,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:06:28,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:06:28,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 05:06:28,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:06:28,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3208 [2020-10-14 05:06:28,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:06:28,240 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:06:28,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 05:06:28,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 05:06:28,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-14 05:06:28,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:06:28,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:06:28,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:06:28,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:06:28,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:06:28,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:06:28,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:06:28,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:06:28,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:06:28,276 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:06:28,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:06:28,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:06:28,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:06:28,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:06:28,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:06:28,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:06:28,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:06:28,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:06:28,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-14 05:06:28,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:06:28,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-14 05:06:28,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:06:28,416 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:06:28,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 05:06:28,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 05:06:28,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-14 05:06:28,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:06:28,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 05:06:28,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:06:28,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:06:28,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:06:28,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:06:28,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:06:28,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 05:06:28,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:06:28,465 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:06:28,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:06:28,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:06:28,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 05:06:28,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:06:28,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-14 05:06:28,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:06:28,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:06:28,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:06:28,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:06:28,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:06:28,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 05:06:28,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:06:28,482 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:06:28,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:06:28,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:06:28,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 05:06:28,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:06:28,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-14 05:06:28,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:06:28,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:06:28,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:06:28,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:06:28,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:06:28,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 05:06:28,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:06:28,497 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:06:28,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:06:28,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:06:28,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 05:06:28,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:06:28,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-14 05:06:28,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:06:28,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:06:28,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:06:28,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 05:06:28,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:06:28,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 05:06:28,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:06:28,515 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:06:28,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:06:28,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-14 05:06:28,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:06:28,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:06:28,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 05:06:28,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:06:28,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:06:28,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:06:28,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:06:28,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:06:28,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 05:06:28,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:06:28,526 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:06:28,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:06:28,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:06:28,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:06:28,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:06:28,532 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2020-10-14 05:06:28,532 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [943447077] [2020-10-14 05:06:28,532 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:06:28,532 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 05:06:28,532 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188935194] [2020-10-14 05:06:28,533 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 05:06:28,533 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:06:28,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 05:06:28,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-14 05:06:28,534 INFO L87 Difference]: Start difference. First operand 63 states and 72 transitions. Second operand 8 states. [2020-10-14 05:06:28,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:06:28,794 INFO L93 Difference]: Finished difference Result 83 states and 92 transitions. [2020-10-14 05:06:28,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 05:06:28,795 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 58 [2020-10-14 05:06:28,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:06:28,796 INFO L225 Difference]: With dead ends: 83 [2020-10-14 05:06:28,796 INFO L226 Difference]: Without dead ends: 48 [2020-10-14 05:06:28,797 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-10-14 05:06:28,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-14 05:06:28,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2020-10-14 05:06:28,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-10-14 05:06:28,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 52 transitions. [2020-10-14 05:06:28,805 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 52 transitions. Word has length 58 [2020-10-14 05:06:28,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:06:28,806 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 52 transitions. [2020-10-14 05:06:28,806 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 05:06:28,806 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 52 transitions. [2020-10-14 05:06:28,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-14 05:06:28,807 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:06:28,807 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1] [2020-10-14 05:06:28,807 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 05:06:28,807 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:06:28,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:06:28,808 INFO L82 PathProgramCache]: Analyzing trace with hash -1953044748, now seen corresponding path program 1 times [2020-10-14 05:06:28,808 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:06:28,808 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1243336615] [2020-10-14 05:06:28,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:06:28,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:06:28,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:06:30,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:06:30,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-14 05:06:30,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:06:30,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1832 [2020-10-14 05:06:30,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:06:30,662 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:06:30,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-14 05:06:30,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 05:06:30,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-14 05:06:30,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:06:30,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:06:30,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:06:30,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:06:30,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:06:30,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:06:30,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:06:30,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:06:30,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:06:30,804 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:06:30,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:06:30,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:06:30,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:06:30,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:06:30,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:06:30,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:06:30,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:06:31,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:06:31,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-14 05:06:31,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:06:31,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 234 [2020-10-14 05:06:31,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:06:31,080 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:06:31,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 05:06:31,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:06:31,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 05:06:31,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:06:31,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 05:06:31,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:06:31,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:06:31,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:06:31,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:06:31,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:06:31,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 05:06:31,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:06:31,451 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:06:31,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 05:06:31,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:06:31,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 05:06:31,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:06:31,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-14 05:06:31,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:06:31,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:06:31,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:06:31,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:06:31,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:06:31,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 05:06:31,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:06:31,569 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:06:31,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 05:06:31,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 05:06:31,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 05:06:31,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:06:31,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 05:06:31,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:06:31,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:06:31,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:06:31,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 05:06:31,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:06:31,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-10-14 05:06:31,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:06:31,869 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:06:31,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 05:06:31,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 05:06:31,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 05:06:31,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:06:32,432 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 44 [2020-10-14 05:06:32,777 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 57 [2020-10-14 05:06:34,663 WARN L193 SmtUtils]: Spent 1.55 s on a formula simplification. DAG size of input: 143 DAG size of output: 123 [2020-10-14 05:06:35,285 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 81 [2020-10-14 05:06:35,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 05:06:35,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:06:35,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:06:35,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:06:35,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:06:35,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:06:35,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-14 05:06:35,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:06:35,331 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:06:35,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 05:06:35,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 05:06:35,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 05:06:35,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:06:35,690 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 38 [2020-10-14 05:06:35,714 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 14 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 05:06:35,715 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1243336615] [2020-10-14 05:06:35,715 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:06:35,715 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-14 05:06:35,715 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370221005] [2020-10-14 05:06:35,716 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-14 05:06:35,716 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:06:35,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-14 05:06:35,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=808, Unknown=0, NotChecked=0, Total=870 [2020-10-14 05:06:35,717 INFO L87 Difference]: Start difference. First operand 48 states and 52 transitions. Second operand 30 states. [2020-10-14 05:06:36,451 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2020-10-14 05:06:38,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:06:38,597 INFO L93 Difference]: Finished difference Result 57 states and 61 transitions. [2020-10-14 05:06:38,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-14 05:06:38,600 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 55 [2020-10-14 05:06:38,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:06:38,601 INFO L225 Difference]: With dead ends: 57 [2020-10-14 05:06:38,601 INFO L226 Difference]: Without dead ends: 54 [2020-10-14 05:06:38,602 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=124, Invalid=1516, Unknown=0, NotChecked=0, Total=1640 [2020-10-14 05:06:38,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-14 05:06:38,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 50. [2020-10-14 05:06:38,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-14 05:06:38,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2020-10-14 05:06:38,612 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 55 [2020-10-14 05:06:38,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:06:38,613 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2020-10-14 05:06:38,613 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-14 05:06:38,613 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2020-10-14 05:06:38,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-14 05:06:38,614 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:06:38,614 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1] [2020-10-14 05:06:38,614 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 05:06:38,614 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:06:38,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:06:38,615 INFO L82 PathProgramCache]: Analyzing trace with hash -414803304, now seen corresponding path program 2 times [2020-10-14 05:06:38,615 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:06:38,615 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [267196582] [2020-10-14 05:06:38,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:06:38,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:06:38,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:06:40,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:06:42,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:06:42,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 05:06:42,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:06:42,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3747 [2020-10-14 05:06:42,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:06:42,399 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:06:42,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 36 [2020-10-14 05:06:42,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 05:06:42,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-14 05:06:42,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:06:42,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:06:42,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:06:42,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:06:42,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:06:42,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:06:42,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:06:42,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:06:42,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:06:42,805 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:06:42,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:06:42,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:06:42,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:06:42,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:06:42,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:06:42,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:06:42,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:06:43,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:06:43,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-14 05:06:43,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:06:43,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 248 [2020-10-14 05:06:43,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:06:43,101 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:06:43,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-14 05:06:43,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:06:43,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 05:06:43,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:06:43,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 05:06:43,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:06:43,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:06:43,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:06:43,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:06:43,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:06:43,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 05:06:43,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:06:43,821 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:06:43,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 05:06:43,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:06:43,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 05:06:43,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:06:43,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-14 05:06:43,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:06:43,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:06:43,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:06:43,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:06:43,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:06:43,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-14 05:06:43,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:06:43,974 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:06:43,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 05:06:43,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 05:06:43,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 05:06:43,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:06:44,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 05:06:44,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:06:44,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:06:44,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:06:44,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 05:06:44,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:06:44,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 193 [2020-10-14 05:06:44,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:06:44,494 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:06:44,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 05:06:44,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 05:06:44,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 05:06:44,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:06:45,085 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 57 [2020-10-14 05:06:45,512 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 74 [2020-10-14 05:06:46,697 WARN L193 SmtUtils]: Spent 915.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 104 [2020-10-14 05:06:46,984 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 61 [2020-10-14 05:06:46,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 05:06:46,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:06:46,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:06:47,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:06:47,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:06:47,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:06:47,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-14 05:06:47,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:06:47,027 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:06:47,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 05:06:47,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 05:06:47,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 05:06:47,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:06:47,691 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 39 [2020-10-14 05:06:47,722 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 05:06:47,722 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [267196582] [2020-10-14 05:06:47,722 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:06:47,722 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-14 05:06:47,722 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388456398] [2020-10-14 05:06:47,723 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-14 05:06:47,723 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:06:47,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-14 05:06:47,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=868, Unknown=0, NotChecked=0, Total=930 [2020-10-14 05:06:47,724 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand 31 states. [2020-10-14 05:06:48,814 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 61 [2020-10-14 05:06:49,658 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 61 [2020-10-14 05:06:50,012 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 83 [2020-10-14 05:06:51,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:06:51,797 INFO L93 Difference]: Finished difference Result 54 states and 58 transitions. [2020-10-14 05:06:51,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-14 05:06:51,798 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 56 [2020-10-14 05:06:51,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:06:51,799 INFO L225 Difference]: With dead ends: 54 [2020-10-14 05:06:51,799 INFO L226 Difference]: Without dead ends: 52 [2020-10-14 05:06:51,801 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=140, Invalid=1840, Unknown=0, NotChecked=0, Total=1980 [2020-10-14 05:06:51,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-14 05:06:51,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2020-10-14 05:06:51,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-14 05:06:51,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 56 transitions. [2020-10-14 05:06:51,817 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 56 transitions. Word has length 56 [2020-10-14 05:06:51,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:06:51,819 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 56 transitions. [2020-10-14 05:06:51,819 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-14 05:06:51,819 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 56 transitions. [2020-10-14 05:06:51,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-14 05:06:51,824 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:06:51,824 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:06:51,824 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 05:06:51,824 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:06:51,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:06:51,825 INFO L82 PathProgramCache]: Analyzing trace with hash -782885666, now seen corresponding path program 2 times [2020-10-14 05:06:51,826 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:06:51,826 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [754894848] [2020-10-14 05:06:51,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:06:51,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:06:51,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:06:51,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:06:51,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:06:53,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:06:53,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 05:06:53,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 05:06:53,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2079 [2020-10-14 05:06:53,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:06:53,929 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:06:53,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 05:06:53,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 05:06:53,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-14 05:06:53,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:06:54,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:06:54,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:06:54,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:06:54,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:06:54,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:06:54,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:06:54,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:06:54,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:06:54,085 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:06:54,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:06:54,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:06:54,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:06:54,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:06:54,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:06:54,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:06:54,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:06:54,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:06:54,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:06:54,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-14 05:06:54,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:06:54,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-14 05:06:54,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:06:54,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:06:54,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:06:54,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:06:54,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 05:06:54,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:06:54,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 05:06:54,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:06:54,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:06:54,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:06:54,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:06:54,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:06:54,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 05:06:54,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:06:54,266 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:06:54,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:06:54,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:06:54,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:06:54,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:06:54,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-14 05:06:54,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:06:54,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:06:54,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:06:54,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:06:54,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:06:54,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 05:06:54,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:06:54,279 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:06:54,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:06:54,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:06:54,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:06:54,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:06:54,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 05:06:54,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:06:54,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:06:54,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:06:54,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 05:06:54,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:06:54,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-14 05:06:54,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:06:54,324 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:06:54,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:06:54,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:06:54,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 05:06:54,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:06:54,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 05:06:54,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:06:54,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:06:54,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:06:54,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:06:54,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:06:54,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 05:06:54,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:06:54,341 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:06:54,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:06:54,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:06:54,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:06:54,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:06:54,352 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-10-14 05:06:54,353 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [754894848] [2020-10-14 05:06:54,353 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:06:54,353 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 05:06:54,354 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512081685] [2020-10-14 05:06:54,356 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 05:06:54,356 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:06:54,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 05:06:54,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-14 05:06:54,359 INFO L87 Difference]: Start difference. First operand 52 states and 56 transitions. Second operand 9 states. [2020-10-14 05:06:54,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:06:54,780 INFO L93 Difference]: Finished difference Result 61 states and 65 transitions. [2020-10-14 05:06:54,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 05:06:54,782 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 59 [2020-10-14 05:06:54,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:06:54,784 INFO L225 Difference]: With dead ends: 61 [2020-10-14 05:06:54,784 INFO L226 Difference]: Without dead ends: 58 [2020-10-14 05:06:54,785 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2020-10-14 05:06:54,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-14 05:06:54,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 54. [2020-10-14 05:06:54,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-14 05:06:54,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 58 transitions. [2020-10-14 05:06:54,805 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 58 transitions. Word has length 59 [2020-10-14 05:06:54,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:06:54,806 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 58 transitions. [2020-10-14 05:06:54,806 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 05:06:54,806 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 58 transitions. [2020-10-14 05:06:54,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-14 05:06:54,807 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:06:54,808 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:06:54,808 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 05:06:54,808 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:06:54,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:06:54,810 INFO L82 PathProgramCache]: Analyzing trace with hash 1500389870, now seen corresponding path program 3 times [2020-10-14 05:06:54,810 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:06:54,810 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1928477311] [2020-10-14 05:06:54,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:06:54,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:06:54,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:06:56,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:06:57,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:06:57,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:06:58,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:06:59,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:06:59,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 05:06:59,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 05:06:59,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-14 05:06:59,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:06:59,871 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:06:59,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 37 [2020-10-14 05:06:59,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 05:06:59,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-14 05:06:59,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:07:00,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:07:00,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:07:00,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:00,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:07:00,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:07:00,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:07:00,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:07:00,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:07:00,329 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:07:00,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:07:00,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:07:00,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:07:00,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:07:00,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:07:00,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:07:00,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:00,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:07:00,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-14 05:07:00,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:07:00,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 350 [2020-10-14 05:07:00,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:07:00,740 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:07:00,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-14 05:07:00,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:07:00,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-14 05:07:00,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:07:01,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 05:07:01,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:07:01,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:01,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:07:01,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:07:01,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:07:01,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-14 05:07:01,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:07:01,590 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:07:01,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 05:07:01,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:07:01,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 05:07:01,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:07:01,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-14 05:07:01,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:07:01,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:01,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:07:01,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:07:01,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:07:01,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-14 05:07:01,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:07:01,754 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:07:01,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 05:07:01,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 05:07:01,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 05:07:01,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:07:01,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 05:07:02,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:07:02,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:02,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:07:02,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 05:07:02,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:07:02,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 234 [2020-10-14 05:07:02,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:07:02,240 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:07:02,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 05:07:02,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 05:07:02,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 05:07:02,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:07:03,008 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 60 [2020-10-14 05:07:03,792 WARN L193 SmtUtils]: Spent 513.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 82 [2020-10-14 05:07:09,452 WARN L193 SmtUtils]: Spent 5.10 s on a formula simplification. DAG size of input: 164 DAG size of output: 141 [2020-10-14 05:07:11,129 WARN L193 SmtUtils]: Spent 645.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 109 [2020-10-14 05:07:11,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 05:07:11,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:07:11,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:11,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:07:11,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:07:11,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:07:11,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-14 05:07:11,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:07:11,172 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:07:11,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 05:07:11,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 05:07:11,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 05:07:11,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:07:11,930 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 43 [2020-10-14 05:07:11,966 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 05:07:11,966 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1928477311] [2020-10-14 05:07:11,966 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:07:11,967 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-14 05:07:11,967 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937620947] [2020-10-14 05:07:11,967 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-14 05:07:11,967 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:07:11,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-14 05:07:11,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=928, Unknown=0, NotChecked=0, Total=992 [2020-10-14 05:07:11,968 INFO L87 Difference]: Start difference. First operand 54 states and 58 transitions. Second operand 32 states. [2020-10-14 05:07:13,353 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 64 [2020-10-14 05:07:14,489 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 61 [2020-10-14 05:07:15,035 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 87 [2020-10-14 05:07:18,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:07:18,355 INFO L93 Difference]: Finished difference Result 58 states and 62 transitions. [2020-10-14 05:07:18,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-14 05:07:18,356 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 60 [2020-10-14 05:07:18,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:07:18,358 INFO L225 Difference]: With dead ends: 58 [2020-10-14 05:07:18,358 INFO L226 Difference]: Without dead ends: 56 [2020-10-14 05:07:18,360 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 13.4s TimeCoverageRelationStatistics Valid=159, Invalid=2193, Unknown=0, NotChecked=0, Total=2352 [2020-10-14 05:07:18,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-14 05:07:18,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-10-14 05:07:18,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-14 05:07:18,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 60 transitions. [2020-10-14 05:07:18,369 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 60 transitions. Word has length 60 [2020-10-14 05:07:18,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:07:18,370 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 60 transitions. [2020-10-14 05:07:18,370 INFO L480 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-14 05:07:18,370 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 60 transitions. [2020-10-14 05:07:18,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-14 05:07:18,371 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:07:18,371 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:07:18,371 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 05:07:18,371 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:07:18,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:07:18,372 INFO L82 PathProgramCache]: Analyzing trace with hash 391400904, now seen corresponding path program 3 times [2020-10-14 05:07:18,372 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:07:18,372 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [46157569] [2020-10-14 05:07:18,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:07:18,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:07:18,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:19,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:22,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:23,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:07:23,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-14 05:07:23,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 05:07:23,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 05:07:23,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:07:23,404 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:07:23,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-14 05:07:23,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 05:07:23,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-14 05:07:23,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:07:23,621 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 35 [2020-10-14 05:07:23,759 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 35 [2020-10-14 05:07:24,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:07:24,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:07:24,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:24,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:07:24,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:07:24,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:07:24,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:07:24,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:07:24,089 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:07:24,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:07:24,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:07:24,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:07:24,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:07:24,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:07:24,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:07:24,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:24,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:07:24,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-14 05:07:24,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:07:24,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 232 [2020-10-14 05:07:24,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:07:24,366 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:07:24,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 05:07:24,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:07:24,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 05:07:24,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:07:25,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 05:07:25,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:07:25,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:25,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:07:25,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:07:25,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:07:25,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 05:07:25,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:07:25,129 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:07:25,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 05:07:25,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:07:25,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 05:07:25,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:07:25,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-14 05:07:25,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:07:25,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:25,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:07:25,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:07:25,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:07:25,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-14 05:07:25,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:07:25,269 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:07:25,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 05:07:25,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 05:07:25,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 05:07:25,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:07:25,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 05:07:25,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:07:25,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:25,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:07:25,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 05:07:25,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:07:25,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 417 [2020-10-14 05:07:25,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:07:25,945 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:07:25,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 05:07:25,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 05:07:25,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 05:07:25,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:07:27,315 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 36 [2020-10-14 05:07:27,623 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 43 [2020-10-14 05:07:41,405 WARN L193 SmtUtils]: Spent 13.15 s on a formula simplification. DAG size of input: 300 DAG size of output: 175 [2020-10-14 05:07:47,807 WARN L193 SmtUtils]: Spent 4.93 s on a formula simplification. DAG size of input: 212 DAG size of output: 153 [2020-10-14 05:07:47,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 05:07:47,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:07:47,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:47,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:07:47,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:07:47,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:07:47,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 05:07:47,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:07:47,838 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:07:47,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 05:07:47,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 05:07:47,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 05:07:47,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:07:48,333 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 4 proven. 34 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 05:07:48,333 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [46157569] [2020-10-14 05:07:48,334 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:07:48,334 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-14 05:07:48,334 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20268688] [2020-10-14 05:07:48,335 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-14 05:07:48,335 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:07:48,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-14 05:07:48,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=925, Unknown=0, NotChecked=0, Total=992 [2020-10-14 05:07:48,336 INFO L87 Difference]: Start difference. First operand 56 states and 60 transitions. Second operand 32 states. [2020-10-14 05:07:49,498 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2020-10-14 05:07:50,105 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 44 [2020-10-14 05:07:50,649 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2020-10-14 05:07:51,498 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 82 [2020-10-14 05:07:55,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:07:55,037 INFO L93 Difference]: Finished difference Result 65 states and 69 transitions. [2020-10-14 05:07:55,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-14 05:07:55,039 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 63 [2020-10-14 05:07:55,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:07:55,039 INFO L225 Difference]: With dead ends: 65 [2020-10-14 05:07:55,039 INFO L226 Difference]: Without dead ends: 62 [2020-10-14 05:07:55,041 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 25.5s TimeCoverageRelationStatistics Valid=179, Invalid=2077, Unknown=0, NotChecked=0, Total=2256 [2020-10-14 05:07:55,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-10-14 05:07:55,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 58. [2020-10-14 05:07:55,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-10-14 05:07:55,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 62 transitions. [2020-10-14 05:07:55,050 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 62 transitions. Word has length 63 [2020-10-14 05:07:55,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:07:55,051 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 62 transitions. [2020-10-14 05:07:55,051 INFO L480 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-14 05:07:55,051 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 62 transitions. [2020-10-14 05:07:55,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-14 05:07:55,051 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:07:55,052 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:07:55,052 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 05:07:55,052 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:07:55,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:07:55,052 INFO L82 PathProgramCache]: Analyzing trace with hash -751432124, now seen corresponding path program 4 times [2020-10-14 05:07:55,053 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:07:55,053 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1961062786] [2020-10-14 05:07:55,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:07:55,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:07:55,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:56,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:57,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:58,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:58,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:00,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:00,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:08:00,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 05:08:00,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 05:08:00,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5439 [2020-10-14 05:08:00,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:08:00,517 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:08:00,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 37 [2020-10-14 05:08:00,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 05:08:00,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-14 05:08:00,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:08:00,737 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 40 [2020-10-14 05:08:00,872 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 43 [2020-10-14 05:08:01,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:08:01,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:08:01,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:01,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:08:01,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:08:01,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:08:01,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:08:01,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:08:01,196 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:08:01,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:08:01,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:08:01,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:08:01,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:08:01,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:08:01,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:08:01,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:01,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:01,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:08:01,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-14 05:08:01,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:08:01,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 295 [2020-10-14 05:08:01,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:08:01,545 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:08:01,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-14 05:08:01,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:08:01,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-14 05:08:01,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:08:02,069 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 52 [2020-10-14 05:08:02,265 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 46 [2020-10-14 05:08:02,649 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 54 [2020-10-14 05:08:02,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 05:08:02,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:08:02,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:02,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:08:02,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:08:02,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:08:02,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 05:08:02,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:08:02,790 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:08:02,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 05:08:02,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:08:02,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 05:08:02,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:08:02,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-14 05:08:02,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:08:02,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:02,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:08:02,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:08:02,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:08:02,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 05:08:02,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:08:02,938 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:08:02,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 05:08:02,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:08:02,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 05:08:02,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:08:03,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 05:08:03,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:08:03,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:03,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:08:03,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 05:08:03,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:08:03,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 255 [2020-10-14 05:08:03,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:08:03,360 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:08:03,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 05:08:03,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 05:08:03,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 05:08:03,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:08:04,265 WARN L193 SmtUtils]: Spent 378.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 66 [2020-10-14 05:08:04,950 WARN L193 SmtUtils]: Spent 407.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 72 [2020-10-14 05:08:11,421 WARN L193 SmtUtils]: Spent 5.90 s on a formula simplification. DAG size of input: 200 DAG size of output: 152 [2020-10-14 05:08:12,502 WARN L193 SmtUtils]: Spent 652.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 121 [2020-10-14 05:08:12,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 05:08:12,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:08:12,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:12,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:08:12,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:08:12,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:08:12,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-14 05:08:12,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:08:12,553 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:08:12,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 05:08:12,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 05:08:12,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 05:08:12,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:08:13,201 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 45 [2020-10-14 05:08:13,242 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 8 proven. 38 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 05:08:13,243 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1961062786] [2020-10-14 05:08:13,243 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:08:13,243 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2020-10-14 05:08:13,243 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359425873] [2020-10-14 05:08:13,244 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-10-14 05:08:13,244 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:08:13,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-10-14 05:08:13,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=985, Unknown=0, NotChecked=0, Total=1056 [2020-10-14 05:08:13,245 INFO L87 Difference]: Start difference. First operand 58 states and 62 transitions. Second operand 33 states. [2020-10-14 05:08:14,324 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 58 [2020-10-14 05:08:15,012 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 50 [2020-10-14 05:08:15,352 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 51 [2020-10-14 05:08:15,882 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 77 [2020-10-14 05:08:16,744 WARN L193 SmtUtils]: Spent 526.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 105 [2020-10-14 05:08:18,652 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2020-10-14 05:08:20,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:08:20,802 INFO L93 Difference]: Finished difference Result 93 states and 99 transitions. [2020-10-14 05:08:20,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-14 05:08:20,804 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 64 [2020-10-14 05:08:20,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:08:20,805 INFO L225 Difference]: With dead ends: 93 [2020-10-14 05:08:20,805 INFO L226 Difference]: Without dead ends: 91 [2020-10-14 05:08:20,807 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 14.9s TimeCoverageRelationStatistics Valid=170, Invalid=2280, Unknown=0, NotChecked=0, Total=2450 [2020-10-14 05:08:20,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-10-14 05:08:20,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 84. [2020-10-14 05:08:20,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-10-14 05:08:20,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 89 transitions. [2020-10-14 05:08:20,816 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 89 transitions. Word has length 64 [2020-10-14 05:08:20,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:08:20,817 INFO L479 AbstractCegarLoop]: Abstraction has 84 states and 89 transitions. [2020-10-14 05:08:20,817 INFO L480 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-10-14 05:08:20,817 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 89 transitions. [2020-10-14 05:08:20,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-14 05:08:20,817 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:08:20,818 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:08:20,818 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 05:08:20,818 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:08:20,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:08:20,818 INFO L82 PathProgramCache]: Analyzing trace with hash -327785402, now seen corresponding path program 1 times [2020-10-14 05:08:20,818 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:08:20,818 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [266925221] [2020-10-14 05:08:20,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:08:20,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:08:20,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:20,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:21,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:21,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:22,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:24,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:25,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:25,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:25,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:08:25,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 05:08:25,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 05:08:25,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-14 05:08:25,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:08:25,845 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:08:25,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 05:08:25,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 05:08:25,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 05:08:25,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:08:25,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:08:25,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:08:25,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:25,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:08:25,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:08:25,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:08:25,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:08:25,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:08:25,868 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:08:25,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:08:25,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:08:25,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:08:25,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:08:25,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:08:25,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:08:25,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:25,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:25,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:08:25,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-14 05:08:25,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:08:25,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-14 05:08:25,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:08:25,982 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:08:25,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 05:08:25,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 05:08:25,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 05:08:25,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:08:26,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 05:08:26,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:08:26,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:26,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:08:26,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:08:26,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:08:26,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 05:08:26,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:08:26,019 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:08:26,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 05:08:26,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:08:26,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 05:08:26,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:08:26,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-14 05:08:26,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:08:26,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:26,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:08:26,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:08:26,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:08:26,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 05:08:26,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:08:26,059 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:08:26,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:08:26,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:08:26,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 05:08:26,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:08:26,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 05:08:26,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:08:26,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:26,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:08:26,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 05:08:26,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:08:26,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 05:08:26,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:08:26,075 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:08:26,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:08:26,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-14 05:08:26,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:08:26,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:08:26,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 05:08:26,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:08:26,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:26,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:08:26,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:08:26,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:08:26,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 05:08:26,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:08:26,084 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:08:26,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:08:26,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:08:26,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:08:26,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:08:26,088 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-14 05:08:26,089 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [266925221] [2020-10-14 05:08:26,089 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:08:26,089 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 05:08:26,089 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338785486] [2020-10-14 05:08:26,090 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 05:08:26,090 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:08:26,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 05:08:26,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-14 05:08:26,090 INFO L87 Difference]: Start difference. First operand 84 states and 89 transitions. Second operand 8 states. [2020-10-14 05:08:26,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:08:26,335 INFO L93 Difference]: Finished difference Result 104 states and 109 transitions. [2020-10-14 05:08:26,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 05:08:26,337 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 64 [2020-10-14 05:08:26,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:08:26,338 INFO L225 Difference]: With dead ends: 104 [2020-10-14 05:08:26,338 INFO L226 Difference]: Without dead ends: 60 [2020-10-14 05:08:26,339 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-14 05:08:26,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-14 05:08:26,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2020-10-14 05:08:26,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-10-14 05:08:26,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 63 transitions. [2020-10-14 05:08:26,350 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 63 transitions. Word has length 64 [2020-10-14 05:08:26,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:08:26,350 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 63 transitions. [2020-10-14 05:08:26,350 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 05:08:26,350 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 63 transitions. [2020-10-14 05:08:26,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-14 05:08:26,351 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:08:26,351 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:08:26,351 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-14 05:08:26,352 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:08:26,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:08:26,352 INFO L82 PathProgramCache]: Analyzing trace with hash -543426126, now seen corresponding path program 4 times [2020-10-14 05:08:26,352 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:08:26,352 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1267894451] [2020-10-14 05:08:26,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:08:26,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:08:26,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:27,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:29,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:30,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:31,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:08:31,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-14 05:08:31,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 05:08:31,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 05:08:31,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:08:31,380 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:08:31,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 37 [2020-10-14 05:08:31,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 05:08:31,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 05:08:31,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:08:31,836 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 38 [2020-10-14 05:08:32,012 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 47 [2020-10-14 05:08:32,165 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 34 [2020-10-14 05:08:32,304 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 36 [2020-10-14 05:08:32,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:08:32,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:08:32,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:32,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:08:32,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:08:32,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:08:32,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:08:32,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:08:32,739 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:08:32,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:08:32,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:08:32,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:08:32,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:08:32,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:08:32,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:08:32,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:33,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:08:33,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-14 05:08:33,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:08:33,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 340 [2020-10-14 05:08:33,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:08:33,143 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:08:33,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 05:08:33,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:08:33,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 05:08:33,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:08:33,616 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 41 [2020-10-14 05:08:34,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 05:08:34,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:08:34,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:34,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:08:34,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:08:34,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:08:34,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 05:08:34,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:08:34,067 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:08:34,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 05:08:34,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:08:34,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 05:08:34,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:08:34,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-14 05:08:34,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:08:34,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:34,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:08:34,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:08:34,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:08:34,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 05:08:34,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:08:34,240 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:08:34,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 05:08:34,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 05:08:34,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 05:08:34,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:08:34,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 05:08:34,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:08:34,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:34,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:08:34,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 05:08:34,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:08:34,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-10-14 05:08:34,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:08:34,668 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:08:34,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 05:08:34,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 05:08:34,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 05:08:34,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0