/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/list-simple/sll2c_append_unequal.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 23:39:46,374 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 23:39:46,376 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 23:39:46,400 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 23:39:46,401 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 23:39:46,402 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 23:39:46,403 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 23:39:46,405 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 23:39:46,406 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 23:39:46,407 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 23:39:46,408 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 23:39:46,409 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 23:39:46,409 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 23:39:46,410 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 23:39:46,411 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 23:39:46,412 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 23:39:46,413 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 23:39:46,414 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 23:39:46,416 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 23:39:46,418 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 23:39:46,419 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 23:39:46,420 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 23:39:46,421 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 23:39:46,422 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 23:39:46,425 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 23:39:46,425 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 23:39:46,425 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 23:39:46,426 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 23:39:46,427 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 23:39:46,427 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 23:39:46,428 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 23:39:46,428 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 23:39:46,429 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 23:39:46,430 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 23:39:46,431 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 23:39:46,431 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 23:39:46,431 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 23:39:46,432 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 23:39:46,432 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 23:39:46,433 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 23:39:46,433 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 23:39:46,434 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 23:39:46,457 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 23:39:46,457 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 23:39:46,458 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 23:39:46,459 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 23:39:46,459 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 23:39:46,459 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 23:39:46,459 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 23:39:46,459 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 23:39:46,460 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 23:39:46,460 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 23:39:46,460 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 23:39:46,460 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 23:39:46,460 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 23:39:46,460 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 23:39:46,461 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 23:39:46,461 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 23:39:46,461 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 23:39:46,461 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 23:39:46,461 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 23:39:46,462 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 23:39:46,462 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 23:39:46,462 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 23:39:46,462 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 23:39:46,462 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 23:39:46,463 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 23:39:46,463 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 23:39:46,463 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 23:39:46,463 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 23:39:46,463 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 23:39:46,464 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 23:39:46,798 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 23:39:46,811 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 23:39:46,814 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 23:39:46,816 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 23:39:46,817 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 23:39:46,817 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/sll2c_append_unequal.i [2020-10-14 23:39:46,884 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8c775ae1d/f684ec152f484718a9993135c3e27e1e/FLAGe9a2a3850 [2020-10-14 23:39:47,344 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 23:39:47,345 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-simple/sll2c_append_unequal.i [2020-10-14 23:39:47,359 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8c775ae1d/f684ec152f484718a9993135c3e27e1e/FLAGe9a2a3850 [2020-10-14 23:39:47,641 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8c775ae1d/f684ec152f484718a9993135c3e27e1e [2020-10-14 23:39:47,650 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 23:39:47,651 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 23:39:47,653 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 23:39:47,653 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 23:39:47,656 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 23:39:47,658 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:39:47" (1/1) ... [2020-10-14 23:39:47,661 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20b2dea7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:39:47, skipping insertion in model container [2020-10-14 23:39:47,661 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:39:47" (1/1) ... [2020-10-14 23:39:47,669 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 23:39:47,713 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 23:39:48,217 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 23:39:48,228 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 23:39:48,273 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 23:39:48,353 INFO L208 MainTranslator]: Completed translation [2020-10-14 23:39:48,354 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:39:48 WrapperNode [2020-10-14 23:39:48,354 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 23:39:48,355 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 23:39:48,355 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 23:39:48,355 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 23:39:48,371 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:39:48" (1/1) ... [2020-10-14 23:39:48,373 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:39:48" (1/1) ... [2020-10-14 23:39:48,420 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:39:48" (1/1) ... [2020-10-14 23:39:48,420 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:39:48" (1/1) ... [2020-10-14 23:39:48,447 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:39:48" (1/1) ... [2020-10-14 23:39:48,453 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:39:48" (1/1) ... [2020-10-14 23:39:48,457 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:39:48" (1/1) ... [2020-10-14 23:39:48,465 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 23:39:48,465 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 23:39:48,465 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 23:39:48,465 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 23:39:48,466 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:39:48" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 23:39:48,544 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 23:39:48,544 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 23:39:48,544 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-14 23:39:48,545 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-14 23:39:48,545 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-10-14 23:39:48,545 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2020-10-14 23:39:48,545 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_circular_create [2020-10-14 23:39:48,546 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_circular_destroy [2020-10-14 23:39:48,546 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_circular_append [2020-10-14 23:39:48,546 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 23:39:48,546 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 23:39:48,547 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-14 23:39:48,547 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-14 23:39:48,547 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-14 23:39:48,547 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-14 23:39:48,548 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-14 23:39:48,548 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-14 23:39:48,548 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-14 23:39:48,548 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-14 23:39:48,548 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-14 23:39:48,549 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-14 23:39:48,549 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-14 23:39:48,550 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-14 23:39:48,550 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-14 23:39:48,551 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-14 23:39:48,551 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-14 23:39:48,552 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-14 23:39:48,553 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-14 23:39:48,553 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-14 23:39:48,553 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-14 23:39:48,553 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-14 23:39:48,553 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-14 23:39:48,553 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-14 23:39:48,553 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-14 23:39:48,554 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-14 23:39:48,554 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-14 23:39:48,554 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-14 23:39:48,554 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-14 23:39:48,554 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-14 23:39:48,555 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-14 23:39:48,555 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-14 23:39:48,555 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-14 23:39:48,555 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-14 23:39:48,555 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-14 23:39:48,555 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-14 23:39:48,557 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-14 23:39:48,557 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-14 23:39:48,557 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-14 23:39:48,557 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-14 23:39:48,558 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-14 23:39:48,558 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-14 23:39:48,558 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-14 23:39:48,558 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-14 23:39:48,558 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-14 23:39:48,559 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-14 23:39:48,559 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-14 23:39:48,559 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-14 23:39:48,559 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-14 23:39:48,559 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-14 23:39:48,559 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-14 23:39:48,559 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-14 23:39:48,560 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-14 23:39:48,560 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-14 23:39:48,560 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-14 23:39:48,560 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-14 23:39:48,560 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-14 23:39:48,560 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-14 23:39:48,561 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-14 23:39:48,562 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-14 23:39:48,562 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-14 23:39:48,562 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-14 23:39:48,564 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-14 23:39:48,564 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 23:39:48,564 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-14 23:39:48,564 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-14 23:39:48,564 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-14 23:39:48,564 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 23:39:48,565 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-14 23:39:48,565 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-14 23:39:48,565 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-14 23:39:48,565 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-14 23:39:48,565 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-14 23:39:48,565 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-14 23:39:48,565 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-14 23:39:48,566 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-14 23:39:48,566 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-14 23:39:48,566 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-14 23:39:48,566 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-14 23:39:48,566 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-14 23:39:48,566 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-14 23:39:48,566 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-14 23:39:48,567 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-14 23:39:48,567 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-14 23:39:48,567 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-14 23:39:48,567 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-14 23:39:48,567 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-14 23:39:48,567 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-14 23:39:48,567 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-14 23:39:48,568 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-14 23:39:48,568 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-14 23:39:48,568 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-14 23:39:48,568 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-14 23:39:48,568 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-14 23:39:48,568 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-14 23:39:48,568 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-14 23:39:48,568 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-14 23:39:48,569 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-14 23:39:48,569 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-14 23:39:48,569 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-14 23:39:48,569 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-14 23:39:48,569 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-14 23:39:48,569 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-14 23:39:48,569 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-14 23:39:48,570 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-14 23:39:48,570 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-14 23:39:48,570 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-14 23:39:48,570 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-10-14 23:39:48,571 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2020-10-14 23:39:48,571 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-14 23:39:48,572 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-14 23:39:48,572 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-14 23:39:48,572 INFO L130 BoogieDeclarations]: Found specification of procedure sll_circular_create [2020-10-14 23:39:48,572 INFO L130 BoogieDeclarations]: Found specification of procedure sll_circular_destroy [2020-10-14 23:39:48,572 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-14 23:39:48,573 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 23:39:48,573 INFO L130 BoogieDeclarations]: Found specification of procedure sll_circular_append [2020-10-14 23:39:48,577 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 23:39:48,577 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-14 23:39:48,577 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-10-14 23:39:48,577 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-14 23:39:48,578 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 23:39:48,578 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 23:39:49,043 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-10-14 23:39:49,274 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 23:39:49,275 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-14 23:39:49,279 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:39:49 BoogieIcfgContainer [2020-10-14 23:39:49,279 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 23:39:49,281 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 23:39:49,281 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 23:39:49,285 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 23:39:49,285 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:39:47" (1/3) ... [2020-10-14 23:39:49,286 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@671ca04a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:39:49, skipping insertion in model container [2020-10-14 23:39:49,286 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:39:48" (2/3) ... [2020-10-14 23:39:49,287 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@671ca04a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:39:49, skipping insertion in model container [2020-10-14 23:39:49,287 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:39:49" (3/3) ... [2020-10-14 23:39:49,289 INFO L109 eAbstractionObserver]: Analyzing ICFG sll2c_append_unequal.i [2020-10-14 23:39:49,301 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 23:39:49,311 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 23:39:49,327 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 23:39:49,357 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 23:39:49,358 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 23:39:49,358 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 23:39:49,358 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 23:39:49,358 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 23:39:49,359 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 23:39:49,359 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 23:39:49,359 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 23:39:49,381 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states. [2020-10-14 23:39:49,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-14 23:39:49,391 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:39:49,392 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 23:39:49,393 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:39:49,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:39:49,400 INFO L82 PathProgramCache]: Analyzing trace with hash -1121781111, now seen corresponding path program 1 times [2020-10-14 23:39:49,410 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:39:49,411 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [155957145] [2020-10-14 23:39:49,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:39:49,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:39:49,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:39:49,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:39:50,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:39:51,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:39:52,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:39:52,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-14 23:39:52,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 23:39:52,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2571 [2020-10-14 23:39:52,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:39:52,158 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:39:52,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-14 23:39:52,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:39:52,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 23:39:52,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 23:39:52,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:39:52,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:39:52,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:39:52,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:39:52,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:39:52,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:39:52,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 23:39:52,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:39:52,280 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:39:52,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:39:52,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:39:52,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:39:52,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:39:52,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:39:52,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:39:52,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:39:52,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:39:52,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:39:52,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 23:39:52,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:39:52,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-14 23:39:52,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:39:52,447 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:39:52,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 23:39:52,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:39:52,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 23:39:52,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:39:52,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:39:52,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:39:52,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:39:52,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:39:52,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:39:52,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:39:52,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-14 23:39:52,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:39:52,524 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:39:52,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:39:52,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:39:52,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 23:39:52,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:39:52,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 23:39:52,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:39:52,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:39:52,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:39:52,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 23:39:52,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:39:52,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-14 23:39:52,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:39:52,689 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:39:52,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 23:39:52,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:39:52,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 23:39:52,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:39:52,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:39:52,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:39:52,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:39:52,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:39:52,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:39:52,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:39:52,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-14 23:39:52,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:39:52,854 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:39:52,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:39:52,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:39:52,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:39:52,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:39:52,951 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 23:39:52,952 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [155957145] [2020-10-14 23:39:52,955 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:39:52,955 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-14 23:39:52,956 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743555947] [2020-10-14 23:39:52,962 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-14 23:39:52,963 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:39:52,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-14 23:39:52,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2020-10-14 23:39:52,985 INFO L87 Difference]: Start difference. First operand 58 states. Second operand 18 states. [2020-10-14 23:39:53,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:39:53,988 INFO L93 Difference]: Finished difference Result 114 states and 154 transitions. [2020-10-14 23:39:53,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 23:39:53,990 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 37 [2020-10-14 23:39:53,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:39:54,002 INFO L225 Difference]: With dead ends: 114 [2020-10-14 23:39:54,002 INFO L226 Difference]: Without dead ends: 53 [2020-10-14 23:39:54,007 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=88, Invalid=668, Unknown=0, NotChecked=0, Total=756 [2020-10-14 23:39:54,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-10-14 23:39:54,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 51. [2020-10-14 23:39:54,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-14 23:39:54,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 61 transitions. [2020-10-14 23:39:54,064 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 61 transitions. Word has length 37 [2020-10-14 23:39:54,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:39:54,065 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 61 transitions. [2020-10-14 23:39:54,065 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-14 23:39:54,065 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 61 transitions. [2020-10-14 23:39:54,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-14 23:39:54,068 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:39:54,068 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] [2020-10-14 23:39:54,069 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 23:39:54,069 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:39:54,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:39:54,070 INFO L82 PathProgramCache]: Analyzing trace with hash 983235931, now seen corresponding path program 1 times [2020-10-14 23:39:54,070 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:39:54,071 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1910209922] [2020-10-14 23:39:54,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:39:54,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:39:54,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:39:54,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:39:54,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:39:58,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:39:58,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-14 23:39:58,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:39:58,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4330 [2020-10-14 23:39:58,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:39:58,431 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:39:58,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-14 23:39:58,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:39:58,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-14 23:39:58,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:39:58,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:39:58,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:39:58,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:39:58,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:39:58,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:39:58,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:39:58,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:39:58,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:39:58,494 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:39:58,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:39:58,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:39:58,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:39:58,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:39:58,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:39:58,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:39:58,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:39:58,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:39:58,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:39:58,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-14 23:39:58,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:39:58,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 243 [2020-10-14 23:39:58,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:39:58,765 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:39:58,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 23:39:58,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:39:58,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 23:39:58,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:39:58,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:39:58,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:39:58,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:39:58,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:39:58,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:39:58,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:39:58,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 23:39:58,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:39:58,862 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:39:58,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:39:58,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:39:58,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:39:58,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 23:39:58,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-14 23:39:58,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:39:58,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:39:58,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:39:58,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:39:58,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:39:58,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:39:58,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-14 23:39:58,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:39:58,926 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:39:58,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:39:58,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:39:58,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 23:39:58,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 23:39:58,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-14 23:39:58,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:39:59,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:39:59,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:39:59,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 23:39:59,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:39:59,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-14 23:39:59,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:39:59,116 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:39:59,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 23:39:59,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:39:59,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 23:39:59,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:39:59,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:39:59,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:39:59,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:39:59,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:39:59,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:39:59,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:39:59,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-14 23:39:59,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:39:59,381 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:39:59,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:39:59,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:39:59,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:39:59,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-10-14 23:39:59,529 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 23:39:59,529 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1910209922] [2020-10-14 23:39:59,534 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:39:59,534 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-14 23:39:59,535 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352833429] [2020-10-14 23:39:59,538 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-14 23:39:59,539 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:39:59,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-14 23:39:59,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2020-10-14 23:39:59,540 INFO L87 Difference]: Start difference. First operand 51 states and 61 transitions. Second operand 18 states. [2020-10-14 23:40:00,297 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 41 [2020-10-14 23:40:00,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:40:00,619 INFO L93 Difference]: Finished difference Result 64 states and 78 transitions. [2020-10-14 23:40:00,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 23:40:00,620 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 46 [2020-10-14 23:40:00,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:40:00,624 INFO L225 Difference]: With dead ends: 64 [2020-10-14 23:40:00,625 INFO L226 Difference]: Without dead ends: 51 [2020-10-14 23:40:00,627 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=84, Invalid=618, Unknown=0, NotChecked=0, Total=702 [2020-10-14 23:40:00,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-10-14 23:40:00,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 43. [2020-10-14 23:40:00,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-14 23:40:00,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 50 transitions. [2020-10-14 23:40:00,645 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 50 transitions. Word has length 46 [2020-10-14 23:40:00,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:40:00,646 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 50 transitions. [2020-10-14 23:40:00,646 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-14 23:40:00,646 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 50 transitions. [2020-10-14 23:40:00,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-14 23:40:00,649 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:40:00,650 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, 1, 1, 1] [2020-10-14 23:40:00,650 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 23:40:00,651 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:40:00,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:40:00,651 INFO L82 PathProgramCache]: Analyzing trace with hash 343088958, now seen corresponding path program 1 times [2020-10-14 23:40:00,651 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:40:00,652 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1461093838] [2020-10-14 23:40:00,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:40:00,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:40:00,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:00,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:01,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:02,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:03,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:40:03,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-14 23:40:03,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 23:40:03,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3230 [2020-10-14 23:40:03,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:40:03,905 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:40:03,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-14 23:40:03,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:40:03,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-14 23:40:03,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:40:03,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:40:03,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:40:03,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:03,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:40:03,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:40:03,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:40:03,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:40:03,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:40:03,986 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:40:03,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:40:03,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:40:03,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:40:03,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:40:04,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:40:04,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:40:04,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:04,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:40:04,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 23:40:04,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:40:04,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-14 23:40:04,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:40:04,072 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:40:04,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 23:40:04,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:40:04,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 23:40:04,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:40:04,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:40:04,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:40:04,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:04,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:40:04,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:40:04,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:40:04,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 23:40:04,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:40:04,171 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:40:04,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:40:04,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:40:04,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 23:40:04,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:40:04,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 23:40:04,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:40:04,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:04,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:40:04,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 23:40:04,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:40:04,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-10-14 23:40:04,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:40:04,402 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:40:04,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 23:40:04,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:40:04,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 23:40:04,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:40:04,935 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 55 [2020-10-14 23:40:05,317 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 69 [2020-10-14 23:40:05,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:40:05,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:40:05,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:05,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:40:05,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:40:05,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:40:05,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-14 23:40:05,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:40:05,505 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:40:05,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 23:40:05,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:40:05,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:40:05,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:40:05,700 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 23:40:05,701 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1461093838] [2020-10-14 23:40:05,701 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:40:05,701 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-14 23:40:05,701 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986087986] [2020-10-14 23:40:05,702 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-14 23:40:05,702 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:40:05,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-14 23:40:05,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=419, Unknown=0, NotChecked=0, Total=462 [2020-10-14 23:40:05,703 INFO L87 Difference]: Start difference. First operand 43 states and 50 transitions. Second operand 22 states. [2020-10-14 23:40:06,617 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 54 [2020-10-14 23:40:07,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:40:07,088 INFO L93 Difference]: Finished difference Result 76 states and 94 transitions. [2020-10-14 23:40:07,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 23:40:07,094 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 41 [2020-10-14 23:40:07,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:40:07,095 INFO L225 Difference]: With dead ends: 76 [2020-10-14 23:40:07,096 INFO L226 Difference]: Without dead ends: 68 [2020-10-14 23:40:07,097 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=88, Invalid=842, Unknown=0, NotChecked=0, Total=930 [2020-10-14 23:40:07,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-14 23:40:07,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 57. [2020-10-14 23:40:07,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-14 23:40:07,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 68 transitions. [2020-10-14 23:40:07,122 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 68 transitions. Word has length 41 [2020-10-14 23:40:07,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:40:07,123 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 68 transitions. [2020-10-14 23:40:07,123 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-14 23:40:07,124 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 68 transitions. [2020-10-14 23:40:07,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-14 23:40:07,130 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:40:07,130 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:40:07,131 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 23:40:07,131 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:40:07,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:40:07,132 INFO L82 PathProgramCache]: Analyzing trace with hash -957246055, now seen corresponding path program 1 times [2020-10-14 23:40:07,132 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:40:07,132 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [9907739] [2020-10-14 23:40:07,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:40:07,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:40:07,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:07,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:07,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:08,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:09,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:11,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:40:11,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-14 23:40:11,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 23:40:11,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3897 [2020-10-14 23:40:11,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:40:11,048 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:40:11,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-14 23:40:11,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:40:11,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-14 23:40:11,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:40:11,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:40:11,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:40:11,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:11,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:40:11,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:40:11,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:40:11,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:40:11,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:40:11,166 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:40:11,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:40:11,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:40:11,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:40:11,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:40:11,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:40:11,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:40:11,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:11,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:40:11,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 23:40:11,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:40:11,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-14 23:40:11,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:40:11,272 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:40:11,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 23:40:11,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:40:11,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 23:40:11,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 23:40:11,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:40:11,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:40:11,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:11,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:40:11,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:40:11,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:40:11,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-14 23:40:11,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:40:11,420 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:40:11,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:40:11,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:40:11,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 23:40:11,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:40:11,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 23:40:11,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:40:11,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:11,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:40:11,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 23:40:11,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:40:11,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 181 [2020-10-14 23:40:11,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:40:11,687 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:40:11,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 23:40:11,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:40:11,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 23:40:11,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:40:12,049 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 54 [2020-10-14 23:40:12,307 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 72 [2020-10-14 23:40:12,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:40:12,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:40:12,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:12,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:40:12,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:40:12,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:40:12,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-14 23:40:12,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:40:12,427 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:40:12,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 23:40:12,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:40:12,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:40:12,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:40:12,803 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 23:40:12,803 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [9907739] [2020-10-14 23:40:12,804 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:40:12,804 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-14 23:40:12,804 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901327918] [2020-10-14 23:40:12,804 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-14 23:40:12,805 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:40:12,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-14 23:40:12,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=453, Unknown=0, NotChecked=0, Total=506 [2020-10-14 23:40:12,806 INFO L87 Difference]: Start difference. First operand 57 states and 68 transitions. Second operand 23 states. [2020-10-14 23:40:14,193 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 82 [2020-10-14 23:40:14,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:40:14,681 INFO L93 Difference]: Finished difference Result 72 states and 87 transitions. [2020-10-14 23:40:14,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-14 23:40:14,683 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 43 [2020-10-14 23:40:14,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:40:14,685 INFO L225 Difference]: With dead ends: 72 [2020-10-14 23:40:14,688 INFO L226 Difference]: Without dead ends: 70 [2020-10-14 23:40:14,689 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=128, Invalid=1132, Unknown=0, NotChecked=0, Total=1260 [2020-10-14 23:40:14,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-10-14 23:40:14,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 61. [2020-10-14 23:40:14,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-14 23:40:14,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 73 transitions. [2020-10-14 23:40:14,703 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 73 transitions. Word has length 43 [2020-10-14 23:40:14,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:40:14,704 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 73 transitions. [2020-10-14 23:40:14,704 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-14 23:40:14,704 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 73 transitions. [2020-10-14 23:40:14,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-14 23:40:14,706 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:40:14,706 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:40:14,706 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 23:40:14,706 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:40:14,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:40:14,707 INFO L82 PathProgramCache]: Analyzing trace with hash -277787719, now seen corresponding path program 1 times [2020-10-14 23:40:14,707 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:40:14,707 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1882848833] [2020-10-14 23:40:14,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:40:14,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:40:14,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:14,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:15,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:16,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:17,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:18,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:40:18,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-14 23:40:18,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 23:40:18,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4066 [2020-10-14 23:40:18,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:40:18,786 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:40:18,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-14 23:40:18,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:40:18,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-14 23:40:18,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:40:18,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:40:18,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:40:18,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:18,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:40:18,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:40:18,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:40:18,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:40:18,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:40:18,921 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:40:18,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:40:18,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:40:18,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:40:18,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:40:18,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:40:18,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:40:18,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:18,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:40:19,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 23:40:19,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:40:19,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-14 23:40:19,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:40:19,003 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:40:19,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 23:40:19,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:40:19,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 23:40:19,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:40:19,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:40:19,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:40:19,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:19,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:40:19,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:40:19,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:40:19,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 23:40:19,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:40:19,102 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:40:19,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:40:19,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:40:19,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 23:40:19,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:40:19,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 23:40:19,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:40:19,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:19,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:19,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:40:19,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-14 23:40:19,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:40:19,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 311 [2020-10-14 23:40:19,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:40:19,478 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:40:19,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 23:40:19,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:40:19,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 23:40:19,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:40:19,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:40:19,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:40:19,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:19,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:40:19,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:40:19,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:40:19,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-14 23:40:19,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:40:19,882 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:40:19,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:40:19,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:40:19,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:40:19,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:40:20,106 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 23:40:20,106 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1882848833] [2020-10-14 23:40:20,106 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:40:20,106 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-14 23:40:20,107 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404533810] [2020-10-14 23:40:20,107 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-14 23:40:20,107 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:40:20,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-14 23:40:20,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=415, Unknown=0, NotChecked=0, Total=462 [2020-10-14 23:40:20,108 INFO L87 Difference]: Start difference. First operand 61 states and 73 transitions. Second operand 22 states. [2020-10-14 23:40:21,467 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 47 [2020-10-14 23:40:21,750 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 75 [2020-10-14 23:40:21,992 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 56 [2020-10-14 23:40:22,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:40:22,348 INFO L93 Difference]: Finished difference Result 73 states and 89 transitions. [2020-10-14 23:40:22,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 23:40:22,349 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 43 [2020-10-14 23:40:22,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:40:22,351 INFO L225 Difference]: With dead ends: 73 [2020-10-14 23:40:22,351 INFO L226 Difference]: Without dead ends: 62 [2020-10-14 23:40:22,353 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=112, Invalid=1010, Unknown=0, NotChecked=0, Total=1122 [2020-10-14 23:40:22,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-10-14 23:40:22,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 61. [2020-10-14 23:40:22,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-14 23:40:22,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 72 transitions. [2020-10-14 23:40:22,364 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 72 transitions. Word has length 43 [2020-10-14 23:40:22,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:40:22,365 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 72 transitions. [2020-10-14 23:40:22,365 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-14 23:40:22,365 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 72 transitions. [2020-10-14 23:40:22,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-14 23:40:22,366 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:40:22,366 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 23:40:22,367 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 23:40:22,367 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:40:22,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:40:22,367 INFO L82 PathProgramCache]: Analyzing trace with hash 2011910278, now seen corresponding path program 1 times [2020-10-14 23:40:22,368 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:40:22,368 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1071389451] [2020-10-14 23:40:22,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:40:22,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:40:22,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:22,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:23,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:23,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:24,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:26,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:26,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:27,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:40:27,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-14 23:40:27,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 23:40:27,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 23:40:27,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:40:27,392 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:40:27,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-14 23:40:27,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:40:27,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-14 23:40:27,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:40:27,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:40:27,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:40:27,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:27,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:40:27,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:40:27,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:40:27,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:40:27,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:40:27,468 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:40:27,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:40:27,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:40:27,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:40:27,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:40:27,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:40:27,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:40:27,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:27,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:40:27,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-14 23:40:27,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:40:27,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-14 23:40:27,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:40:27,556 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:40:27,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 23:40:27,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:40:27,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 23:40:27,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:40:27,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:40:27,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:40:27,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:27,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:40:27,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:40:27,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:40:27,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 23:40:27,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:40:27,624 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:40:27,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:40:27,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:40:27,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:40:27,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:40:27,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-14 23:40:27,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:40:27,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:27,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:40:27,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:40:27,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:40:27,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 23:40:27,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:40:27,638 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:40:27,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:40:27,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:40:27,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 23:40:27,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:40:27,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-14 23:40:27,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:40:27,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:27,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:40:27,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 23:40:27,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:40:27,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-14 23:40:27,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:40:27,798 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:40:27,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 23:40:27,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:40:27,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 23:40:27,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:40:28,143 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 50 [2020-10-14 23:40:28,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:40:28,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:40:28,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:28,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:40:28,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:40:28,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:40:28,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 23:40:28,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:40:28,215 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:40:28,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 23:40:28,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:40:28,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:40:28,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:40:28,360 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 23:40:28,360 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1071389451] [2020-10-14 23:40:28,361 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:40:28,361 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-14 23:40:28,361 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432224814] [2020-10-14 23:40:28,361 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-14 23:40:28,362 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:40:28,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-14 23:40:28,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=419, Unknown=0, NotChecked=0, Total=462 [2020-10-14 23:40:28,363 INFO L87 Difference]: Start difference. First operand 61 states and 72 transitions. Second operand 22 states. [2020-10-14 23:40:29,058 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 51 [2020-10-14 23:40:29,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:40:29,580 INFO L93 Difference]: Finished difference Result 83 states and 101 transitions. [2020-10-14 23:40:29,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 23:40:29,581 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 49 [2020-10-14 23:40:29,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:40:29,583 INFO L225 Difference]: With dead ends: 83 [2020-10-14 23:40:29,583 INFO L226 Difference]: Without dead ends: 75 [2020-10-14 23:40:29,584 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=88, Invalid=842, Unknown=0, NotChecked=0, Total=930 [2020-10-14 23:40:29,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-10-14 23:40:29,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 64. [2020-10-14 23:40:29,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-10-14 23:40:29,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 75 transitions. [2020-10-14 23:40:29,595 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 75 transitions. Word has length 49 [2020-10-14 23:40:29,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:40:29,596 INFO L479 AbstractCegarLoop]: Abstraction has 64 states and 75 transitions. [2020-10-14 23:40:29,596 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-14 23:40:29,596 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 75 transitions. [2020-10-14 23:40:29,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-14 23:40:29,597 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:40:29,598 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] [2020-10-14 23:40:29,598 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 23:40:29,598 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:40:29,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:40:29,598 INFO L82 PathProgramCache]: Analyzing trace with hash 757241057, now seen corresponding path program 1 times [2020-10-14 23:40:29,599 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:40:29,599 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1087577697] [2020-10-14 23:40:29,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:40:29,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:40:29,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:30,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:30,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:33,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:40:33,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-14 23:40:33,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:40:33,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3714 [2020-10-14 23:40:33,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:40:33,333 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:40:33,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-14 23:40:33,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:40:33,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-14 23:40:33,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:40:33,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:40:33,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:40:33,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:33,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:40:33,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:40:33,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:40:33,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:40:33,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:40:33,388 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:40:33,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:40:33,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:40:33,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:40:33,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:40:33,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:40:33,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:40:33,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:33,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:40:33,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-14 23:40:33,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:40:33,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-14 23:40:33,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:40:33,524 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:40:33,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 23:40:33,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:40:33,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 23:40:33,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:40:33,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:40:33,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:40:33,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:33,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:40:33,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:40:33,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:40:33,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 23:40:33,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:40:33,620 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:40:33,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:40:33,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:40:33,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 23:40:33,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:40:33,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-14 23:40:33,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:40:33,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:33,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:40:33,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:40:33,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:40:33,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 23:40:33,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:40:33,675 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:40:33,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 23:40:33,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:40:33,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:40:33,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:40:33,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-14 23:40:33,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:40:33,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:33,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:40:33,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 23:40:33,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:40:33,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-14 23:40:33,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:40:33,797 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:40:33,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 23:40:33,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:40:33,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 23:40:33,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:40:34,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:40:34,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:40:34,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:34,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:40:34,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:40:34,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:40:34,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-14 23:40:34,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:40:34,186 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:40:34,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:40:34,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:40:34,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:40:34,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:40:34,408 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-14 23:40:34,409 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1087577697] [2020-10-14 23:40:34,409 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:40:34,409 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-14 23:40:34,409 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350710964] [2020-10-14 23:40:34,410 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-14 23:40:34,410 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:40:34,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-14 23:40:34,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=458, Unknown=0, NotChecked=0, Total=506 [2020-10-14 23:40:34,411 INFO L87 Difference]: Start difference. First operand 64 states and 75 transitions. Second operand 23 states. [2020-10-14 23:40:35,621 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 46 [2020-10-14 23:40:35,916 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 65 [2020-10-14 23:40:36,152 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 58 [2020-10-14 23:40:36,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:40:36,488 INFO L93 Difference]: Finished difference Result 87 states and 106 transitions. [2020-10-14 23:40:36,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-14 23:40:36,489 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 51 [2020-10-14 23:40:36,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:40:36,490 INFO L225 Difference]: With dead ends: 87 [2020-10-14 23:40:36,491 INFO L226 Difference]: Without dead ends: 74 [2020-10-14 23:40:36,492 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=117, Invalid=1073, Unknown=0, NotChecked=0, Total=1190 [2020-10-14 23:40:36,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-14 23:40:36,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 72. [2020-10-14 23:40:36,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-10-14 23:40:36,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 86 transitions. [2020-10-14 23:40:36,504 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 86 transitions. Word has length 51 [2020-10-14 23:40:36,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:40:36,505 INFO L479 AbstractCegarLoop]: Abstraction has 72 states and 86 transitions. [2020-10-14 23:40:36,505 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-14 23:40:36,505 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 86 transitions. [2020-10-14 23:40:36,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-14 23:40:36,507 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:40:36,507 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] [2020-10-14 23:40:36,507 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 23:40:36,507 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:40:36,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:40:36,508 INFO L82 PathProgramCache]: Analyzing trace with hash 1436699393, now seen corresponding path program 1 times [2020-10-14 23:40:36,508 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:40:36,508 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1301383654] [2020-10-14 23:40:36,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:40:36,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:40:36,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:36,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:38,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:40,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:41,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:40:41,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-14 23:40:41,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 23:40:41,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-14 23:40:41,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:40:41,529 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:40:41,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-14 23:40:41,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:40:41,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-14 23:40:41,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:40:41,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:40:41,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:40:41,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:41,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:40:41,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:40:41,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:40:41,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:40:41,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:40:41,722 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:40:41,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:40:41,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:40:41,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:40:41,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:40:41,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:40:41,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:40:41,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:41,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:40:41,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-14 23:40:41,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:40:41,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 175 [2020-10-14 23:40:41,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:40:41,926 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:40:41,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 23:40:41,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:40:41,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 23:40:41,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:40:42,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:40:42,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:40:42,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:42,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:40:42,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:40:42,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:40:42,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-14 23:40:42,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:40:42,126 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:40:42,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:40:42,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:40:42,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 23:40:42,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:40:42,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-14 23:40:42,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:40:42,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:42,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:40:42,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:40:42,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:40:42,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 23:40:42,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:40:42,211 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:40:42,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 23:40:42,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:40:42,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 23:40:42,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:40:42,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-14 23:40:42,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:40:42,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:42,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:40:42,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-14 23:40:42,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:40:42,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 223 [2020-10-14 23:40:42,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:40:42,513 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:40:42,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 23:40:42,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:40:42,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 23:40:42,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:40:43,347 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 70 [2020-10-14 23:40:43,920 WARN L193 SmtUtils]: Spent 379.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 92 [2020-10-14 23:40:44,935 WARN L193 SmtUtils]: Spent 592.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 96 [2020-10-14 23:40:45,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:40:45,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:40:45,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:45,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:40:45,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:40:45,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:40:45,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-14 23:40:45,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:40:45,450 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:40:45,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 23:40:45,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:40:45,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:40:45,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:40:45,736 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 23:40:45,736 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1301383654] [2020-10-14 23:40:45,737 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:40:45,737 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-14 23:40:45,737 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622070241] [2020-10-14 23:40:45,737 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-14 23:40:45,737 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:40:45,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-14 23:40:45,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=647, Unknown=0, NotChecked=0, Total=702 [2020-10-14 23:40:45,738 INFO L87 Difference]: Start difference. First operand 72 states and 86 transitions. Second operand 27 states. [2020-10-14 23:40:47,164 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 61 [2020-10-14 23:40:47,820 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 72 [2020-10-14 23:40:48,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:40:48,867 INFO L93 Difference]: Finished difference Result 98 states and 120 transitions. [2020-10-14 23:40:48,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-14 23:40:48,871 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 51 [2020-10-14 23:40:48,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:40:48,872 INFO L225 Difference]: With dead ends: 98 [2020-10-14 23:40:48,872 INFO L226 Difference]: Without dead ends: 90 [2020-10-14 23:40:48,874 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=117, Invalid=1365, Unknown=0, NotChecked=0, Total=1482 [2020-10-14 23:40:48,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-10-14 23:40:48,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 77. [2020-10-14 23:40:48,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-14 23:40:48,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 93 transitions. [2020-10-14 23:40:48,887 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 93 transitions. Word has length 51 [2020-10-14 23:40:48,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:40:48,887 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 93 transitions. [2020-10-14 23:40:48,887 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-14 23:40:48,887 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 93 transitions. [2020-10-14 23:40:48,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-14 23:40:48,889 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:40:48,889 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:40:48,889 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 23:40:48,890 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:40:48,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:40:48,890 INFO L82 PathProgramCache]: Analyzing trace with hash 1266979508, now seen corresponding path program 1 times [2020-10-14 23:40:48,890 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:40:48,890 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [797996577] [2020-10-14 23:40:48,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:40:48,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:40:48,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:48,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:49,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:49,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:50,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:50,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:50,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:53,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:40:53,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-14 23:40:53,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 23:40:53,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4117 [2020-10-14 23:40:53,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:40:53,018 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:40:53,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-14 23:40:53,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:40:53,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-14 23:40:53,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:40:53,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:40:53,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:40:53,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:53,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:40:53,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:40:53,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:40:53,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:40:53,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:40:53,144 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:40:53,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:40:53,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:40:53,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:40:53,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:40:53,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:40:53,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:40:53,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:53,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:40:53,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 23:40:53,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:40:53,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-14 23:40:53,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:40:53,207 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:40:53,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 23:40:53,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:40:53,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 23:40:53,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:40:53,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:40:53,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:40:53,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:53,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:40:53,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:40:53,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:40:53,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 23:40:53,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:40:53,306 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:40:53,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:40:53,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:40:53,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 23:40:53,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:40:53,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 23:40:53,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:40:53,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:53,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:40:53,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 23:40:53,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:40:53,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-14 23:40:53,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:40:53,495 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:40:53,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 23:40:53,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:40:53,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 23:40:53,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:40:54,015 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 34 [2020-10-14 23:40:54,822 WARN L193 SmtUtils]: Spent 673.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 54 [2020-10-14 23:40:54,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:40:54,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:40:54,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:54,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:40:54,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:40:54,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:40:54,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-14 23:40:54,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:40:54,928 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:40:54,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 23:40:54,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:40:54,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:40:54,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:40:55,090 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 23:40:55,091 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [797996577] [2020-10-14 23:40:55,091 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:40:55,091 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-14 23:40:55,091 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494655566] [2020-10-14 23:40:55,092 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-14 23:40:55,092 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:40:55,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-14 23:40:55,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=461, Unknown=0, NotChecked=0, Total=506 [2020-10-14 23:40:55,092 INFO L87 Difference]: Start difference. First operand 77 states and 93 transitions. Second operand 23 states. [2020-10-14 23:40:55,912 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 52 [2020-10-14 23:40:56,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:40:56,522 INFO L93 Difference]: Finished difference Result 95 states and 114 transitions. [2020-10-14 23:40:56,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-14 23:40:56,523 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 46 [2020-10-14 23:40:56,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:40:56,525 INFO L225 Difference]: With dead ends: 95 [2020-10-14 23:40:56,525 INFO L226 Difference]: Without dead ends: 93 [2020-10-14 23:40:56,526 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=96, Invalid=960, Unknown=0, NotChecked=0, Total=1056 [2020-10-14 23:40:56,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-10-14 23:40:56,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 80. [2020-10-14 23:40:56,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-10-14 23:40:56,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 97 transitions. [2020-10-14 23:40:56,540 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 97 transitions. Word has length 46 [2020-10-14 23:40:56,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:40:56,541 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 97 transitions. [2020-10-14 23:40:56,541 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-14 23:40:56,541 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 97 transitions. [2020-10-14 23:40:56,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-14 23:40:56,543 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:40:56,543 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:40:56,543 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 23:40:56,543 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:40:56,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:40:56,543 INFO L82 PathProgramCache]: Analyzing trace with hash 1267024210, now seen corresponding path program 1 times [2020-10-14 23:40:56,544 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:40:56,544 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1470479628] [2020-10-14 23:40:56,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:40:56,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:40:56,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:56,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:56,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:40:56,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-14 23:40:56,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:40:56,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 285 [2020-10-14 23:40:56,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:40:56,840 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:40:56,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:40:56,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:40:56,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 23:40:56,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:40:56,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:40:56,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:40:56,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:56,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:40:56,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:40:56,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:40:56,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:40:56,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:40:56,892 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:40:56,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:40:56,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:40:56,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:40:56,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:40:56,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:40:56,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:40:56,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:56,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:40:56,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 23:40:56,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:40:56,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-14 23:40:56,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:40:56,939 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:40:56,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:40:56,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 23:40:56,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 23:40:56,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:40:56,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:40:56,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:40:56,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:56,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:40:56,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:40:56,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:40:56,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 23:40:56,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:40:56,974 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:40:56,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:40:56,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:40:56,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 23:40:56,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:40:56,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 23:40:56,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:40:56,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:56,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:40:56,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 23:40:56,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:40:56,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 23:40:57,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:40:57,000 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:40:57,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:40:57,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-14 23:40:57,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:40:57,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:40:57,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:40:57,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:40:57,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:57,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:40:57,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:40:57,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:40:57,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 23:40:57,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:40:57,014 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:40:57,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:40:57,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:40:57,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:40:57,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:40:57,021 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-14 23:40:57,023 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1470479628] [2020-10-14 23:40:57,023 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:40:57,023 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-14 23:40:57,023 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650997258] [2020-10-14 23:40:57,025 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 23:40:57,025 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:40:57,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 23:40:57,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-14 23:40:57,025 INFO L87 Difference]: Start difference. First operand 80 states and 97 transitions. Second operand 7 states. [2020-10-14 23:40:57,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:40:57,221 INFO L93 Difference]: Finished difference Result 112 states and 131 transitions. [2020-10-14 23:40:57,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 23:40:57,222 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 46 [2020-10-14 23:40:57,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:40:57,223 INFO L225 Difference]: With dead ends: 112 [2020-10-14 23:40:57,223 INFO L226 Difference]: Without dead ends: 65 [2020-10-14 23:40:57,224 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 23:40:57,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-10-14 23:40:57,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2020-10-14 23:40:57,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-14 23:40:57,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 78 transitions. [2020-10-14 23:40:57,253 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 78 transitions. Word has length 46 [2020-10-14 23:40:57,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:40:57,254 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 78 transitions. [2020-10-14 23:40:57,254 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 23:40:57,254 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 78 transitions. [2020-10-14 23:40:57,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-14 23:40:57,258 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:40:57,258 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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 23:40:57,258 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 23:40:57,259 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:40:57,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:40:57,259 INFO L82 PathProgramCache]: Analyzing trace with hash 2030361756, now seen corresponding path program 1 times [2020-10-14 23:40:57,260 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:40:57,260 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1908544668] [2020-10-14 23:40:57,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:40:57,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:40:57,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:57,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:58,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:59,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:02,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:41:02,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-14 23:41:02,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 23:41:02,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 23:41:02,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:41:02,296 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:41:02,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-14 23:41:02,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:41:02,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-14 23:41:02,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:41:02,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:41:02,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:41:02,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:02,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:41:02,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:41:02,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:41:02,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:41:02,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:41:02,531 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:41:02,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:41:02,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:41:02,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:41:02,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:41:02,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:41:02,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:41:02,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:02,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:41:02,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-14 23:41:02,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:41:02,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-14 23:41:02,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:41:02,694 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:41:02,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 23:41:02,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:41:02,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-14 23:41:02,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:41:03,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:41:03,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:41:03,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:03,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:41:03,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:41:03,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:41:03,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 23:41:03,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:41:03,018 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:41:03,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 23:41:03,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:41:03,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 23:41:03,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:41:03,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-14 23:41:03,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:41:03,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:03,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:41:03,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:41:03,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:41:03,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 23:41:03,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:41:03,134 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:41:03,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:41:03,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:41:03,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 23:41:03,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:41:03,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-14 23:41:03,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:41:03,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:03,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:41:03,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-14 23:41:03,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:41:03,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-10-14 23:41:03,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:41:03,392 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:41:03,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 23:41:03,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:41:03,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 23:41:03,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:41:05,165 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2020-10-14 23:41:05,619 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 72 [2020-10-14 23:41:06,223 WARN L193 SmtUtils]: Spent 428.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 90 [2020-10-14 23:41:08,042 WARN L193 SmtUtils]: Spent 1.51 s on a formula simplification. DAG size of input: 179 DAG size of output: 122