/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/dll2c_insert_equal.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 23:35:57,478 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 23:35:57,482 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 23:35:57,516 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 23:35:57,516 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 23:35:57,526 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 23:35:57,528 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 23:35:57,531 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 23:35:57,534 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 23:35:57,537 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 23:35:57,538 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 23:35:57,539 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 23:35:57,539 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 23:35:57,542 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 23:35:57,544 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 23:35:57,545 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 23:35:57,547 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 23:35:57,548 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 23:35:57,550 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 23:35:57,558 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 23:35:57,560 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 23:35:57,561 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 23:35:57,562 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 23:35:57,562 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 23:35:57,574 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 23:35:57,574 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 23:35:57,575 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 23:35:57,576 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 23:35:57,582 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 23:35:57,583 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 23:35:57,583 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 23:35:57,586 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 23:35:57,587 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 23:35:57,588 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 23:35:57,588 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 23:35:57,588 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 23:35:57,592 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 23:35:57,592 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 23:35:57,592 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 23:35:57,593 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 23:35:57,594 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 23:35:57,595 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 23:35:57,637 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 23:35:57,638 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 23:35:57,639 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 23:35:57,639 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 23:35:57,640 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 23:35:57,640 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 23:35:57,642 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 23:35:57,642 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 23:35:57,642 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 23:35:57,643 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 23:35:57,643 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 23:35:57,644 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 23:35:57,644 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 23:35:57,645 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 23:35:57,645 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 23:35:57,645 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 23:35:57,645 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 23:35:57,645 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 23:35:57,646 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 23:35:57,646 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 23:35:57,646 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 23:35:57,646 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 23:35:57,646 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 23:35:57,647 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 23:35:57,647 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 23:35:57,647 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 23:35:57,647 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 23:35:57,648 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 23:35:57,648 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 23:35:57,648 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 23:35:57,935 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 23:35:57,946 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 23:35:57,951 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 23:35:57,952 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 23:35:57,953 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 23:35:57,953 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/dll2c_insert_equal.i [2020-10-14 23:35:58,025 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ebd1bb295/838735de312b483db6a5b385dada73c2/FLAG6ec82d98d [2020-10-14 23:35:58,628 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 23:35:58,630 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-simple/dll2c_insert_equal.i [2020-10-14 23:35:58,654 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ebd1bb295/838735de312b483db6a5b385dada73c2/FLAG6ec82d98d [2020-10-14 23:35:58,876 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ebd1bb295/838735de312b483db6a5b385dada73c2 [2020-10-14 23:35:58,888 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 23:35:58,890 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 23:35:58,894 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 23:35:58,894 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 23:35:58,897 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 23:35:58,899 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:35:58" (1/1) ... [2020-10-14 23:35:58,902 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@352fd783 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:35:58, skipping insertion in model container [2020-10-14 23:35:58,902 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:35:58" (1/1) ... [2020-10-14 23:35:58,911 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 23:35:58,965 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 23:35:59,376 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 23:35:59,391 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 23:35:59,467 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 23:35:59,528 INFO L208 MainTranslator]: Completed translation [2020-10-14 23:35:59,530 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:35:59 WrapperNode [2020-10-14 23:35:59,530 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 23:35:59,531 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 23:35:59,531 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 23:35:59,531 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 23:35:59,541 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:35:59" (1/1) ... [2020-10-14 23:35:59,542 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:35:59" (1/1) ... [2020-10-14 23:35:59,562 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:35:59" (1/1) ... [2020-10-14 23:35:59,563 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:35:59" (1/1) ... [2020-10-14 23:35:59,583 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:35:59" (1/1) ... [2020-10-14 23:35:59,589 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:35:59" (1/1) ... [2020-10-14 23:35:59,593 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:35:59" (1/1) ... [2020-10-14 23:35:59,600 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 23:35:59,601 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 23:35:59,601 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 23:35:59,601 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 23:35:59,602 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:35:59" (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 23:35:59,665 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 23:35:59,666 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 23:35:59,666 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-14 23:35:59,666 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-14 23:35:59,666 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-10-14 23:35:59,666 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2020-10-14 23:35:59,666 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_circular_create [2020-10-14 23:35:59,668 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_circular_destroy [2020-10-14 23:35:59,668 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_circular_insert [2020-10-14 23:35:59,668 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 23:35:59,668 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 23:35:59,668 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-14 23:35:59,669 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-14 23:35:59,669 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-14 23:35:59,669 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-14 23:35:59,670 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-14 23:35:59,670 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-14 23:35:59,670 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-14 23:35:59,670 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-14 23:35:59,670 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-14 23:35:59,671 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-14 23:35:59,671 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-14 23:35:59,672 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-14 23:35:59,672 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-14 23:35:59,672 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-14 23:35:59,674 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-14 23:35:59,674 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-14 23:35:59,674 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-14 23:35:59,675 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-14 23:35:59,675 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-14 23:35:59,675 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-14 23:35:59,675 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-14 23:35:59,675 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-14 23:35:59,675 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-14 23:35:59,676 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-14 23:35:59,676 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-14 23:35:59,676 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-14 23:35:59,678 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-14 23:35:59,678 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-14 23:35:59,678 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-14 23:35:59,679 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-14 23:35:59,679 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-14 23:35:59,679 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-14 23:35:59,679 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-14 23:35:59,680 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-14 23:35:59,681 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-14 23:35:59,681 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-14 23:35:59,681 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-14 23:35:59,681 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-14 23:35:59,681 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-14 23:35:59,682 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-14 23:35:59,682 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-14 23:35:59,682 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-14 23:35:59,682 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-14 23:35:59,682 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-14 23:35:59,683 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-14 23:35:59,683 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-14 23:35:59,683 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-14 23:35:59,684 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-14 23:35:59,684 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-14 23:35:59,684 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-14 23:35:59,684 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-14 23:35:59,684 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-14 23:35:59,685 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-14 23:35:59,685 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-14 23:35:59,685 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-14 23:35:59,685 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-14 23:35:59,686 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-14 23:35:59,687 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-14 23:35:59,687 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-14 23:35:59,688 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-14 23:35:59,688 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-14 23:35:59,689 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 23:35:59,689 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-14 23:35:59,689 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-14 23:35:59,689 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-14 23:35:59,689 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 23:35:59,689 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-14 23:35:59,689 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-14 23:35:59,690 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-14 23:35:59,690 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-14 23:35:59,690 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-14 23:35:59,690 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-14 23:35:59,690 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-14 23:35:59,690 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-14 23:35:59,690 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-14 23:35:59,691 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-14 23:35:59,691 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-14 23:35:59,691 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-14 23:35:59,691 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-14 23:35:59,691 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-14 23:35:59,691 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-14 23:35:59,691 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-14 23:35:59,691 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-14 23:35:59,692 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-14 23:35:59,692 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-14 23:35:59,692 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-14 23:35:59,692 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-14 23:35:59,692 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-14 23:35:59,692 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-14 23:35:59,692 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-14 23:35:59,693 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-14 23:35:59,693 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-14 23:35:59,693 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-14 23:35:59,693 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-14 23:35:59,693 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-14 23:35:59,693 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-14 23:35:59,693 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-14 23:35:59,694 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-14 23:35:59,694 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-14 23:35:59,694 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-14 23:35:59,694 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-14 23:35:59,694 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-14 23:35:59,694 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-14 23:35:59,694 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-14 23:35:59,695 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-14 23:35:59,695 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-10-14 23:35:59,695 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2020-10-14 23:35:59,696 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-14 23:35:59,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-14 23:35:59,697 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-14 23:35:59,697 INFO L130 BoogieDeclarations]: Found specification of procedure dll_circular_create [2020-10-14 23:35:59,698 INFO L130 BoogieDeclarations]: Found specification of procedure dll_circular_destroy [2020-10-14 23:35:59,698 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-14 23:35:59,698 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 23:35:59,699 INFO L130 BoogieDeclarations]: Found specification of procedure dll_circular_insert [2020-10-14 23:35:59,702 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 23:35:59,702 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-14 23:35:59,702 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-10-14 23:35:59,703 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-14 23:35:59,703 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 23:35:59,703 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 23:36:00,136 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-10-14 23:36:00,322 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 23:36:00,322 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-10-14 23:36:00,329 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:36:00 BoogieIcfgContainer [2020-10-14 23:36:00,330 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 23:36:00,331 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 23:36:00,331 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 23:36:00,335 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 23:36:00,336 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:35:58" (1/3) ... [2020-10-14 23:36:00,337 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16c17a77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:36:00, skipping insertion in model container [2020-10-14 23:36:00,337 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:35:59" (2/3) ... [2020-10-14 23:36:00,344 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16c17a77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:36:00, skipping insertion in model container [2020-10-14 23:36:00,344 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:36:00" (3/3) ... [2020-10-14 23:36:00,346 INFO L109 eAbstractionObserver]: Analyzing ICFG dll2c_insert_equal.i [2020-10-14 23:36:00,357 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 23:36:00,368 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 23:36:00,383 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 23:36:00,406 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 23:36:00,406 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 23:36:00,406 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 23:36:00,407 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 23:36:00,407 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 23:36:00,407 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 23:36:00,407 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 23:36:00,408 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 23:36:00,428 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states. [2020-10-14 23:36:00,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-14 23:36:00,435 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:36:00,437 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 23:36:00,437 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:36:00,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:36:00,444 INFO L82 PathProgramCache]: Analyzing trace with hash 1731853532, now seen corresponding path program 1 times [2020-10-14 23:36:00,453 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:36:00,453 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [872059782] [2020-10-14 23:36:00,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:36:00,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:36:00,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:00,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:01,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:01,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:01,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:36:01,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-14 23:36:01,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 23:36:01,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1078 [2020-10-14 23:36:01,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:36:01,691 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:36:01,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:36:01,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:36:01,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 23:36:01,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 23:36:01,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:36:01,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:36:01,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:01,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:36:01,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:36:01,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:36:01,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 23:36:01,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:36:01,791 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:36:01,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:36:01,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:36:01,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:36:01,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:36:01,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:36:01,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:36:01,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:01,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:01,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:36:01,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 23:36:01,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:36:01,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-14 23:36:01,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:36:01,937 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:36:01,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:36:01,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:36:01,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 23:36:01,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:36:01,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:36:01,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:36:01,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:01,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:36:01,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:36:01,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:36:01,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-14 23:36:01,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:36:01,991 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:36:01,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:36:01,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:36:01,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:36:01,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:36:02,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 23:36:02,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:36:02,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:02,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:02,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:36:02,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 23:36:02,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:36:02,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 200 [2020-10-14 23:36:02,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:36:02,214 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:36:02,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:36:02,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 23:36:02,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 23:36:02,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:36:02,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:36:02,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:36:02,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:02,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:36:02,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:36:02,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:36:02,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-14 23:36:02,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:36:02,281 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:36:02,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:36:02,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:36:02,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 23:36:02,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:36:02,293 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-14 23:36:02,294 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [872059782] [2020-10-14 23:36:02,296 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:36:02,297 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-14 23:36:02,302 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549400265] [2020-10-14 23:36:02,309 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 23:36:02,309 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:36:02,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 23:36:02,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-14 23:36:02,328 INFO L87 Difference]: Start difference. First operand 57 states. Second operand 7 states. [2020-10-14 23:36:02,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:36:02,849 INFO L93 Difference]: Finished difference Result 109 states and 144 transitions. [2020-10-14 23:36:02,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 23:36:02,852 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 37 [2020-10-14 23:36:02,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:36:02,870 INFO L225 Difference]: With dead ends: 109 [2020-10-14 23:36:02,870 INFO L226 Difference]: Without dead ends: 43 [2020-10-14 23:36:02,877 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-14 23:36:02,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-10-14 23:36:02,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-10-14 23:36:02,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-14 23:36:02,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 51 transitions. [2020-10-14 23:36:02,954 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 51 transitions. Word has length 37 [2020-10-14 23:36:02,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:36:02,957 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 51 transitions. [2020-10-14 23:36:02,957 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 23:36:02,957 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 51 transitions. [2020-10-14 23:36:02,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-14 23:36:02,959 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:36:02,960 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:36:02,960 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 23:36:02,960 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:36:02,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:36:02,961 INFO L82 PathProgramCache]: Analyzing trace with hash 651262008, now seen corresponding path program 1 times [2020-10-14 23:36:02,961 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:36:02,962 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [108751463] [2020-10-14 23:36:02,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:36:02,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:36:02,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:03,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:03,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:05,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:36:05,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-14 23:36:05,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:36:05,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2672 [2020-10-14 23:36:05,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:36:05,660 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:36:05,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-14 23:36:05,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:36:05,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-14 23:36:05,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:36:06,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:36:06,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:36:06,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:06,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:36:06,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:36:06,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:36:06,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 23:36:06,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:36:06,062 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:36:06,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:36:06,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:36:06,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:36:06,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:36:06,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:36:06,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:36:06,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:06,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:36:06,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 23:36:06,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:36:06,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 197 [2020-10-14 23:36:06,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:36:06,311 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:36:06,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 23:36:06,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:36:06,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 23:36:06,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:36:06,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:36:06,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:36:06,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:06,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:36:06,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:36:06,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:36:06,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-14 23:36:06,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:36:06,622 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:36:06,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:36:06,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:36:06,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 23:36:06,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:36:06,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 23:36:06,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:36:06,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:07,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:36:07,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 23:36:07,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:36:07,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 409 [2020-10-14 23:36:07,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:36:07,134 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:36:07,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 23:36:07,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:36:07,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 23:36:07,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:36:07,549 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-10-14 23:36:07,811 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2020-10-14 23:36:08,812 WARN L193 SmtUtils]: Spent 798.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 95 [2020-10-14 23:36:08,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:36:08,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:36:09,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:09,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:36:09,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:36:09,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:36:09,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-14 23:36:09,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:36:09,112 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:36:09,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 23:36:09,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:36:09,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:36:09,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:36:09,595 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 41 [2020-10-14 23:36:09,621 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 23:36:09,621 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [108751463] [2020-10-14 23:36:09,621 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:36:09,622 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-14 23:36:09,622 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945769026] [2020-10-14 23:36:09,624 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-14 23:36:09,624 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:36:09,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-14 23:36:09,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=454, Unknown=0, NotChecked=0, Total=506 [2020-10-14 23:36:09,625 INFO L87 Difference]: Start difference. First operand 43 states and 51 transitions. Second operand 23 states. [2020-10-14 23:36:12,219 WARN L193 SmtUtils]: Spent 899.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 117 [2020-10-14 23:36:13,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:36:13,931 INFO L93 Difference]: Finished difference Result 67 states and 83 transitions. [2020-10-14 23:36:13,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-14 23:36:13,932 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 38 [2020-10-14 23:36:13,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:36:13,938 INFO L225 Difference]: With dead ends: 67 [2020-10-14 23:36:13,938 INFO L226 Difference]: Without dead ends: 65 [2020-10-14 23:36:13,939 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=126, Invalid=1134, Unknown=0, NotChecked=0, Total=1260 [2020-10-14 23:36:13,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-10-14 23:36:13,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 56. [2020-10-14 23:36:13,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-14 23:36:13,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 69 transitions. [2020-10-14 23:36:13,955 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 69 transitions. Word has length 38 [2020-10-14 23:36:13,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:36:13,956 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 69 transitions. [2020-10-14 23:36:13,956 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-14 23:36:13,956 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 69 transitions. [2020-10-14 23:36:13,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-14 23:36:13,958 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:36:13,958 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:36:13,958 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 23:36:13,958 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:36:13,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:36:13,959 INFO L82 PathProgramCache]: Analyzing trace with hash 515163690, now seen corresponding path program 2 times [2020-10-14 23:36:13,959 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:36:13,959 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1720808661] [2020-10-14 23:36:13,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:36:13,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:36:13,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:14,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:14,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:14,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:36:14,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-14 23:36:14,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:36:14,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 849 [2020-10-14 23:36:14,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:36:14,833 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:36:14,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 23:36:14,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:36:14,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-14 23:36:14,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:36:14,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:36:14,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:36:14,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:14,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:36:14,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:36:14,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:36:14,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:36:14,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:36:14,873 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:36:14,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:36:14,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:36:14,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:36:14,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:36:14,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:36:14,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:36:14,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:14,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:14,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:36:14,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 23:36:14,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:36:14,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-14 23:36:14,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:36:14,977 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:36:14,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:36:14,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:36:14,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 23:36:14,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:36:14,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:36:14,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:36:14,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:14,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:36:14,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:36:14,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:36:14,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 23:36:14,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:36:14,992 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:36:14,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:36:14,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:36:14,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:36:14,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:36:14,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 23:36:15,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:36:15,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:15,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:36:15,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 23:36:15,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:36:15,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-14 23:36:15,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:36:15,087 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:36:15,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 23:36:15,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 23:36:15,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 23:36:15,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:36:15,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:36:15,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:36:15,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:15,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:36:15,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:36:15,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:36:15,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 23:36:15,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:36:15,143 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:36:15,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:36:15,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:36:15,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 23:36:15,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:36:15,151 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-14 23:36:15,152 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1720808661] [2020-10-14 23:36:15,152 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:36:15,153 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 23:36:15,153 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069863529] [2020-10-14 23:36:15,153 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 23:36:15,154 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:36:15,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 23:36:15,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-14 23:36:15,155 INFO L87 Difference]: Start difference. First operand 56 states and 69 transitions. Second operand 8 states. [2020-10-14 23:36:15,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:36:15,433 INFO L93 Difference]: Finished difference Result 68 states and 84 transitions. [2020-10-14 23:36:15,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 23:36:15,434 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 39 [2020-10-14 23:36:15,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:36:15,436 INFO L225 Difference]: With dead ends: 68 [2020-10-14 23:36:15,436 INFO L226 Difference]: Without dead ends: 54 [2020-10-14 23:36:15,437 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-10-14 23:36:15,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-14 23:36:15,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-10-14 23:36:15,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-14 23:36:15,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 64 transitions. [2020-10-14 23:36:15,448 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 64 transitions. Word has length 39 [2020-10-14 23:36:15,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:36:15,449 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 64 transitions. [2020-10-14 23:36:15,449 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 23:36:15,449 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 64 transitions. [2020-10-14 23:36:15,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-14 23:36:15,450 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:36:15,451 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] [2020-10-14 23:36:15,451 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 23:36:15,451 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:36:15,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:36:15,451 INFO L82 PathProgramCache]: Analyzing trace with hash -11327266, now seen corresponding path program 1 times [2020-10-14 23:36:15,452 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:36:15,452 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [125012516] [2020-10-14 23:36:15,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:36:15,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:36:15,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:15,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:15,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:15,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:17,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:19,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:20,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:36:20,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-14 23:36:20,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 23:36:20,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-14 23:36:20,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:36:20,479 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:36:20,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-14 23:36:20,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:36:20,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-14 23:36:20,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:36:20,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:36:20,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:36:20,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:20,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:36:20,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:36:20,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:36:20,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:36:20,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:36:20,537 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:36:20,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:36:20,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:36:20,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:36:20,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:36:20,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:36:20,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:36:20,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:20,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:20,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:36:20,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 23:36:20,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:36:20,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-14 23:36:20,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:36:20,683 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:36:20,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 23:36:20,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:36:20,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 23:36:20,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:36:20,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:36:20,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:36:20,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:20,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:20,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:36:20,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:36:20,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:36:20,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-14 23:36:20,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:36:20,771 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:36:20,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:36:20,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:36:20,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 23:36:20,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 23:36:20,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 23:36:20,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:36:20,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:20,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:21,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:36:21,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 23:36:21,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:36:21,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 236 [2020-10-14 23:36:21,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:36:21,053 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:36:21,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 23:36:21,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:36:21,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 23:36:21,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:36:21,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:36:21,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:36:21,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:21,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:36:21,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:36:21,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:36:21,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-14 23:36:21,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:36:21,260 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:36:21,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:36:21,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:36:21,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:36:21,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:36:21,384 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 23:36:21,385 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [125012516] [2020-10-14 23:36:21,385 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:36:21,386 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-14 23:36:21,386 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898009024] [2020-10-14 23:36:21,386 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-14 23:36:21,387 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:36:21,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-14 23:36:21,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=302, Unknown=0, NotChecked=0, Total=342 [2020-10-14 23:36:21,388 INFO L87 Difference]: Start difference. First operand 54 states and 64 transitions. Second operand 19 states. [2020-10-14 23:36:22,805 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 46 [2020-10-14 23:36:23,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:36:23,256 INFO L93 Difference]: Finished difference Result 93 states and 111 transitions. [2020-10-14 23:36:23,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-14 23:36:23,257 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 40 [2020-10-14 23:36:23,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:36:23,259 INFO L225 Difference]: With dead ends: 93 [2020-10-14 23:36:23,259 INFO L226 Difference]: Without dead ends: 58 [2020-10-14 23:36:23,260 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=109, Invalid=883, Unknown=0, NotChecked=0, Total=992 [2020-10-14 23:36:23,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-14 23:36:23,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57. [2020-10-14 23:36:23,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-14 23:36:23,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 67 transitions. [2020-10-14 23:36:23,271 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 67 transitions. Word has length 40 [2020-10-14 23:36:23,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:36:23,272 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 67 transitions. [2020-10-14 23:36:23,272 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-14 23:36:23,272 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 67 transitions. [2020-10-14 23:36:23,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-14 23:36:23,273 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:36:23,274 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 23:36:23,274 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 23:36:23,274 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:36:23,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:36:23,275 INFO L82 PathProgramCache]: Analyzing trace with hash 1380637502, now seen corresponding path program 1 times [2020-10-14 23:36:23,275 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:36:23,275 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [727605569] [2020-10-14 23:36:23,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:36:23,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:36:23,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:23,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:23,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:26,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:36:26,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-14 23:36:26,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:36:26,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3465 [2020-10-14 23:36:26,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:36:26,754 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:36:26,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-14 23:36:26,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:36:26,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-14 23:36:26,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:36:26,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:36:26,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:36:26,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:27,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:36:27,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:36:27,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:36:27,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:36:27,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:36:27,002 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:36:27,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:36:27,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:36:27,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:36:27,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:36:27,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:36:27,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:36:27,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:27,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:36:27,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 23:36:27,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:36:27,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-14 23:36:27,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:36:27,095 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:36:27,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 23:36:27,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:36:27,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 23:36:27,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:36:27,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:36:27,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:36:27,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:27,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:36:27,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:36:27,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:36:27,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 23:36:27,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:36:27,190 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:36:27,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:36:27,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:36:27,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 23:36:27,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:36:27,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 23:36:27,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:36:27,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:27,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:36:27,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 23:36:27,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:36:27,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 516 [2020-10-14 23:36:27,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:36:27,755 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:36:27,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 23:36:27,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:36:27,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 23:36:27,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:36:28,359 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 42 [2020-10-14 23:36:28,689 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 68 [2020-10-14 23:36:30,507 WARN L193 SmtUtils]: Spent 1.57 s on a formula simplification. DAG size of input: 132 DAG size of output: 111 [2020-10-14 23:36:30,936 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 83 [2020-10-14 23:36:30,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:36:30,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:36:30,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:30,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:36:30,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:36:30,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:36:30,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-14 23:36:30,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:36:30,984 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:36:30,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 23:36:30,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:36:30,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:36:30,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:36:31,280 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 23:36:31,281 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [727605569] [2020-10-14 23:36:31,281 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:36:31,281 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-14 23:36:31,281 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955239508] [2020-10-14 23:36:31,282 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-14 23:36:31,282 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:36:31,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-14 23:36:31,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=459, Unknown=0, NotChecked=0, Total=506 [2020-10-14 23:36:31,283 INFO L87 Difference]: Start difference. First operand 57 states and 67 transitions. Second operand 23 states. [2020-10-14 23:36:34,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:36:34,090 INFO L93 Difference]: Finished difference Result 74 states and 85 transitions. [2020-10-14 23:36:34,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-14 23:36:34,090 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 41 [2020-10-14 23:36:34,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:36:34,094 INFO L225 Difference]: With dead ends: 74 [2020-10-14 23:36:34,094 INFO L226 Difference]: Without dead ends: 71 [2020-10-14 23:36:34,095 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=90, Invalid=840, Unknown=0, NotChecked=0, Total=930 [2020-10-14 23:36:34,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-10-14 23:36:34,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 59. [2020-10-14 23:36:34,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-14 23:36:34,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 69 transitions. [2020-10-14 23:36:34,108 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 69 transitions. Word has length 41 [2020-10-14 23:36:34,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:36:34,108 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 69 transitions. [2020-10-14 23:36:34,108 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-14 23:36:34,109 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 69 transitions. [2020-10-14 23:36:34,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-14 23:36:34,110 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:36:34,111 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] [2020-10-14 23:36:34,111 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 23:36:34,111 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:36:34,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:36:34,111 INFO L82 PathProgramCache]: Analyzing trace with hash -149868658, now seen corresponding path program 1 times [2020-10-14 23:36:34,112 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:36:34,112 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [816896807] [2020-10-14 23:36:34,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:36:34,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:36:34,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:34,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:34,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:37,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:36:37,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-14 23:36:37,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:36:37,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2960 [2020-10-14 23:36:37,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:36:37,085 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:36:37,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-14 23:36:37,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:36:37,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-14 23:36:37,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:36:37,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:36:37,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:36:37,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:37,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:36:37,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:36:37,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:36:37,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:36:37,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:36:37,246 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:36:37,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:36:37,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:36:37,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:36:37,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:36:37,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:36:37,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:36:37,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:37,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:36:37,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 23:36:37,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:36:37,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-14 23:36:37,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:36:37,359 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:36:37,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 23:36:37,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:36:37,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 23:36:37,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:36:37,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:36:37,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:36:37,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:37,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:36:37,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:36:37,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:36:37,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 23:36:37,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:36:37,534 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:36:37,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:36:37,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:36:37,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 23:36:37,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:36:37,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 23:36:37,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:36:37,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:38,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:36:38,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 23:36:38,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:36:38,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 423 [2020-10-14 23:36:38,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:36:38,055 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:36:38,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 23:36:38,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:36:38,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 23:36:38,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:36:38,395 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2020-10-14 23:36:39,259 WARN L193 SmtUtils]: Spent 484.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 92 [2020-10-14 23:36:39,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:36:39,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:36:39,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:39,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:36:39,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:36:39,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:36:39,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-14 23:36:39,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:36:39,453 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:36:39,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 23:36:39,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:36:39,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:36:39,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:36:39,749 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 37 [2020-10-14 23:36:39,781 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 23:36:39,781 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [816896807] [2020-10-14 23:36:39,783 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:36:39,783 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-14 23:36:39,783 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288459098] [2020-10-14 23:36:39,784 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-14 23:36:39,784 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:36:39,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-14 23:36:39,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=461, Unknown=0, NotChecked=0, Total=506 [2020-10-14 23:36:39,786 INFO L87 Difference]: Start difference. First operand 59 states and 69 transitions. Second operand 23 states. [2020-10-14 23:36:42,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:36:42,430 INFO L93 Difference]: Finished difference Result 71 states and 82 transitions. [2020-10-14 23:36:42,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-14 23:36:42,431 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 42 [2020-10-14 23:36:42,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:36:42,432 INFO L225 Difference]: With dead ends: 71 [2020-10-14 23:36:42,433 INFO L226 Difference]: Without dead ends: 69 [2020-10-14 23:36:42,437 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=92, Invalid=900, Unknown=0, NotChecked=0, Total=992 [2020-10-14 23:36:42,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-10-14 23:36:42,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 61. [2020-10-14 23:36:42,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-14 23:36:42,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 71 transitions. [2020-10-14 23:36:42,457 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 71 transitions. Word has length 42 [2020-10-14 23:36:42,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:36:42,457 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 71 transitions. [2020-10-14 23:36:42,457 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-14 23:36:42,457 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 71 transitions. [2020-10-14 23:36:42,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-14 23:36:42,464 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:36:42,464 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:36:42,465 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 23:36:42,465 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:36:42,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:36:42,469 INFO L82 PathProgramCache]: Analyzing trace with hash 1124252396, now seen corresponding path program 1 times [2020-10-14 23:36:42,470 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:36:42,470 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1836052975] [2020-10-14 23:36:42,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:36:42,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:36:42,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:44,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:36:44,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-14 23:36:44,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:36:44,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2433 [2020-10-14 23:36:44,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:36:44,937 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:36:44,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-14 23:36:44,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:36:44,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-14 23:36:44,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:36:45,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:36:45,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:36:45,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:45,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:36:45,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:36:45,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:36:45,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:36:45,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:36:45,160 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:36:45,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:36:45,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:36:45,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:36:45,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:36:45,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:36:45,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:36:45,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:45,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:36:45,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-14 23:36:45,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:36:45,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 294 [2020-10-14 23:36:45,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:36:45,494 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:36:45,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-14 23:36:45,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:36:45,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-14 23:36:45,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:36:46,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:36:46,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:36:46,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:46,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:36:46,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:36:46,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:36:46,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-14 23:36:46,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:36:46,145 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:36:46,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 23:36:46,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:36:46,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 23:36:46,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:36:46,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-14 23:36:46,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:36:46,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:46,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:36:46,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:36:46,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:36:46,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 23:36:46,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:36:46,238 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:36:46,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:36:46,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:36:46,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 23:36:46,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:36:46,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 23:36:46,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:36:46,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:46,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:36:46,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 23:36:46,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:36:46,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 164 [2020-10-14 23:36:46,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:36:46,501 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:36:46,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 23:36:46,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:36:46,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 23:36:46,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:36:47,895 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 45 [2020-10-14 23:36:48,191 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 56 [2020-10-14 23:36:50,266 WARN L193 SmtUtils]: Spent 1.71 s on a formula simplification. DAG size of input: 155 DAG size of output: 130 [2020-10-14 23:36:59,864 WARN L193 SmtUtils]: Spent 6.84 s on a formula simplification. DAG size of input: 245 DAG size of output: 182 [2020-10-14 23:36:59,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:36:59,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:36:59,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:59,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:36:59,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:36:59,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:36:59,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-14 23:36:59,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:36:59,918 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:36:59,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 23:36:59,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:36:59,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:36:59,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:37:00,410 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 40 [2020-10-14 23:37:00,463 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 23:37:00,464 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1836052975] [2020-10-14 23:37:00,464 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:37:00,464 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-14 23:37:00,465 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220443328] [2020-10-14 23:37:00,465 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-14 23:37:00,465 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:37:00,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-14 23:37:00,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=740, Unknown=0, NotChecked=0, Total=812 [2020-10-14 23:37:00,466 INFO L87 Difference]: Start difference. First operand 61 states and 71 transitions. Second operand 29 states. [2020-10-14 23:37:03,511 WARN L193 SmtUtils]: Spent 2.13 s on a formula simplification that was a NOOP. DAG size: 186 [2020-10-14 23:37:07,431 WARN L193 SmtUtils]: Spent 1.67 s on a formula simplification that was a NOOP. DAG size: 191 [2020-10-14 23:37:10,428 WARN L193 SmtUtils]: Spent 1.94 s on a formula simplification that was a NOOP. DAG size: 195 [2020-10-14 23:37:14,632 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 54 [2020-10-14 23:37:15,021 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 67 [2020-10-14 23:37:17,186 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 84 [2020-10-14 23:37:23,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:37:23,331 INFO L93 Difference]: Finished difference Result 82 states and 97 transitions. [2020-10-14 23:37:23,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-14 23:37:23,333 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 48 [2020-10-14 23:37:23,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:37:23,336 INFO L225 Difference]: With dead ends: 82 [2020-10-14 23:37:23,336 INFO L226 Difference]: Without dead ends: 80 [2020-10-14 23:37:23,338 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 323 ImplicationChecksByTransitivity, 22.8s TimeCoverageRelationStatistics Valid=161, Invalid=1731, Unknown=0, NotChecked=0, Total=1892 [2020-10-14 23:37:23,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-14 23:37:23,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 69. [2020-10-14 23:37:23,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-14 23:37:23,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 82 transitions. [2020-10-14 23:37:23,360 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 82 transitions. Word has length 48 [2020-10-14 23:37:23,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:37:23,361 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 82 transitions. [2020-10-14 23:37:23,361 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-14 23:37:23,361 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 82 transitions. [2020-10-14 23:37:23,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-14 23:37:23,363 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:37:23,363 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:37:23,363 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 23:37:23,363 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:37:23,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:37:23,364 INFO L82 PathProgramCache]: Analyzing trace with hash 2030230568, now seen corresponding path program 1 times [2020-10-14 23:37:23,364 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:37:23,364 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1886299392] [2020-10-14 23:37:23,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:37:23,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:37:23,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:37:23,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:37:23,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:37:23,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-14 23:37:23,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:37:23,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 551 [2020-10-14 23:37:23,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:37:23,927 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:37:23,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:37:23,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 23:37:23,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-14 23:37:23,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:37:23,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:37:23,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:37:23,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:37:23,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:37:23,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:37:23,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:37:23,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 23:37:23,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:37:23,980 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:37:23,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:37:23,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:37:23,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:37:23,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:37:23,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:37:24,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:37:24,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:37:24,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:37:24,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 23:37:24,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:37:24,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-14 23:37:24,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:37:24,038 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:37:24,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:37:24,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:37:24,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 23:37:24,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:37:24,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:37:24,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:37:24,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:37:24,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:37:24,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:37:24,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:37:24,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 23:37:24,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:37:24,080 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:37:24,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:37:24,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:37:24,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 23:37:24,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:37:24,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 23:37:24,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:37:24,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:37:24,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:37:24,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 23:37:24,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:37:24,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-14 23:37:24,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:37:24,148 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:37:24,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:37:24,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 23:37:24,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 23:37:24,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:37:24,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:37:24,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:37:24,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:37:24,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:37:24,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:37:24,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:37:24,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 23:37:24,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:37:24,198 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:37:24,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:37:24,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:37:24,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 23:37:24,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:37:24,205 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-14 23:37:24,205 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1886299392] [2020-10-14 23:37:24,205 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:37:24,206 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 23:37:24,211 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688910900] [2020-10-14 23:37:24,211 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 23:37:24,212 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:37:24,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 23:37:24,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-14 23:37:24,212 INFO L87 Difference]: Start difference. First operand 69 states and 82 transitions. Second operand 9 states. [2020-10-14 23:37:24,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:37:24,515 INFO L93 Difference]: Finished difference Result 78 states and 92 transitions. [2020-10-14 23:37:24,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 23:37:24,516 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 45 [2020-10-14 23:37:24,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:37:24,518 INFO L225 Difference]: With dead ends: 78 [2020-10-14 23:37:24,518 INFO L226 Difference]: Without dead ends: 59 [2020-10-14 23:37:24,519 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-10-14 23:37:24,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-10-14 23:37:24,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2020-10-14 23:37:24,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-14 23:37:24,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 70 transitions. [2020-10-14 23:37:24,531 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 70 transitions. Word has length 45 [2020-10-14 23:37:24,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:37:24,531 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 70 transitions. [2020-10-14 23:37:24,531 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 23:37:24,531 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 70 transitions. [2020-10-14 23:37:24,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-14 23:37:24,532 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:37:24,532 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:37:24,533 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 23:37:24,533 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:37:24,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:37:24,533 INFO L82 PathProgramCache]: Analyzing trace with hash -734097774, now seen corresponding path program 1 times [2020-10-14 23:37:24,533 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:37:24,534 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [12094459] [2020-10-14 23:37:24,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:37:24,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:37:24,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:37:24,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:37:24,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:37:26,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:37:28,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:37:28,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-14 23:37:28,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 23:37:28,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3805 [2020-10-14 23:37:28,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:37:28,358 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:37:28,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-14 23:37:28,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:37:28,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-14 23:37:28,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:37:28,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:37:28,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:37:28,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:37:28,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:37:28,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:37:28,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:37:28,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:37:28,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:37:28,411 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:37:28,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:37:28,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:37:28,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:37:28,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:37:28,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:37:28,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:37:28,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:37:28,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:37:28,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-14 23:37:28,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:37:28,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-14 23:37:28,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:37:28,569 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:37:28,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 23:37:28,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:37:28,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 23:37:28,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:37:28,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:37:28,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:37:28,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:37:28,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:37:28,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:37:28,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:37:28,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 23:37:28,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:37:28,627 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:37:28,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:37:28,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:37:28,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:37:28,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:37:28,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-14 23:37:28,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:37:28,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:37:28,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:37:28,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:37:28,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:37:28,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 23:37:28,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:37:28,647 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:37:28,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:37:28,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:37:28,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 23:37:28,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:37:28,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 23:37:28,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:37:28,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:37:28,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:37:28,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:37:28,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 23:37:28,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:37:28,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-14 23:37:28,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:37:28,759 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:37:28,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 23:37:28,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:37:28,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 23:37:28,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:37:28,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:37:28,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:37:28,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:37:28,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:37:28,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:37:28,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:37:28,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 23:37:28,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:37:28,938 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:37:28,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:37:28,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:37:28,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:37:28,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:37:29,050 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 23:37:29,051 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [12094459] [2020-10-14 23:37:29,051 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:37:29,051 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-14 23:37:29,051 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545134945] [2020-10-14 23:37:29,051 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-14 23:37:29,052 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:37:29,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-14 23:37:29,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=338, Unknown=0, NotChecked=0, Total=380 [2020-10-14 23:37:29,052 INFO L87 Difference]: Start difference. First operand 59 states and 70 transitions. Second operand 20 states. [2020-10-14 23:37:30,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:37:30,542 INFO L93 Difference]: Finished difference Result 94 states and 111 transitions. [2020-10-14 23:37:30,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-14 23:37:30,543 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 50 [2020-10-14 23:37:30,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:37:30,544 INFO L225 Difference]: With dead ends: 94 [2020-10-14 23:37:30,545 INFO L226 Difference]: Without dead ends: 55 [2020-10-14 23:37:30,545 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=115, Invalid=941, Unknown=0, NotChecked=0, Total=1056 [2020-10-14 23:37:30,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-10-14 23:37:30,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-10-14 23:37:30,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-14 23:37:30,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 62 transitions. [2020-10-14 23:37:30,557 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 62 transitions. Word has length 50 [2020-10-14 23:37:30,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:37:30,557 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 62 transitions. [2020-10-14 23:37:30,557 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-14 23:37:30,557 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 62 transitions. [2020-10-14 23:37:30,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-14 23:37:30,558 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:37:30,559 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:37:30,559 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 23:37:30,559 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:37:30,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:37:30,559 INFO L82 PathProgramCache]: Analyzing trace with hash 449588234, now seen corresponding path program 1 times [2020-10-14 23:37:30,560 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:37:30,560 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1312309196] [2020-10-14 23:37:30,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:37:30,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:37:30,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:37:31,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:37:33,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:37:33,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-14 23:37:33,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:37:33,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3123 [2020-10-14 23:37:33,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:37:33,710 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:37:33,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-14 23:37:33,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:37:33,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-14 23:37:33,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:37:33,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:37:33,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:37:33,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:37:33,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:37:33,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:37:33,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:37:33,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:37:33,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:37:33,900 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:37:33,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:37:33,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:37:33,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:37:33,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:37:33,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:37:33,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:37:33,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:37:34,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:37:34,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-14 23:37:34,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:37:34,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-14 23:37:34,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:37:34,018 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:37:34,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 23:37:34,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:37:34,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 23:37:34,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:37:34,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:37:34,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:37:34,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:37:34,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:37:34,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:37:34,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:37:34,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 23:37:34,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:37:34,120 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:37:34,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:37:34,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:37:34,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:37:34,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:37:34,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-14 23:37:34,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:37:34,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:37:34,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:37:34,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:37:34,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:37:34,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 23:37:34,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:37:34,135 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:37:34,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:37:34,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:37:34,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 23:37:34,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:37:34,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 23:37:34,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:37:34,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:37:34,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:37:34,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 23:37:34,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:37:34,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 212 [2020-10-14 23:37:34,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:37:34,404 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:37:34,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 23:37:34,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:37:34,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 23:37:34,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:37:34,817 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 47 [2020-10-14 23:37:36,224 WARN L193 SmtUtils]: Spent 1.23 s on a formula simplification. DAG size of input: 143 DAG size of output: 106 [2020-10-14 23:37:36,600 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 59 [2020-10-14 23:37:36,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:37:36,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:37:36,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:37:36,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:37:36,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:37:36,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:37:36,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 23:37:36,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:37:36,628 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:37:36,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 23:37:36,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:37:36,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:37:36,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:37:36,875 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 23:37:36,875 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1312309196] [2020-10-14 23:37:36,876 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:37:36,876 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-14 23:37:36,876 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915534558] [2020-10-14 23:37:36,876 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-14 23:37:36,876 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:37:36,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-14 23:37:36,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=505, Unknown=0, NotChecked=0, Total=552 [2020-10-14 23:37:36,877 INFO L87 Difference]: Start difference. First operand 55 states and 62 transitions. Second operand 24 states. [2020-10-14 23:37:38,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:37:38,725 INFO L93 Difference]: Finished difference Result 68 states and 75 transitions. [2020-10-14 23:37:38,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-14 23:37:38,726 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 51 [2020-10-14 23:37:38,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:37:38,727 INFO L225 Difference]: With dead ends: 68 [2020-10-14 23:37:38,728 INFO L226 Difference]: Without dead ends: 65 [2020-10-14 23:37:38,729 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=100, Invalid=1022, Unknown=0, NotChecked=0, Total=1122 [2020-10-14 23:37:38,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-10-14 23:37:38,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 59. [2020-10-14 23:37:38,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-14 23:37:38,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 67 transitions. [2020-10-14 23:37:38,740 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 67 transitions. Word has length 51 [2020-10-14 23:37:38,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:37:38,740 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 67 transitions. [2020-10-14 23:37:38,740 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-14 23:37:38,740 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 67 transitions. [2020-10-14 23:37:38,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-14 23:37:38,741 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:37:38,741 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:37:38,741 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 23:37:38,742 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:37:38,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:37:38,744 INFO L82 PathProgramCache]: Analyzing trace with hash 1052375106, now seen corresponding path program 1 times [2020-10-14 23:37:38,745 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:37:38,745 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [485262695] [2020-10-14 23:37:38,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:37:38,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:37:38,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:37:40,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:37:40,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-14 23:37:40,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:37:40,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1729 [2020-10-14 23:37:40,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:37:40,503 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:37:40,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-14 23:37:40,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:37:40,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-14 23:37:40,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:37:40,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:37:40,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:37:40,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:37:40,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:37:40,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:37:40,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:37:40,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:37:40,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:37:40,726 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:37:40,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:37:40,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:37:40,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:37:40,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:37:40,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:37:40,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:37:40,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:37:40,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:37:40,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-14 23:37:40,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:37:40,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-10-14 23:37:40,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:37:40,911 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:37:40,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 23:37:40,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:37:40,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 23:37:40,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:37:41,201 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 42 [2020-10-14 23:37:41,478 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 36 [2020-10-14 23:37:41,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:37:41,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:37:41,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:37:41,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:37:41,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:37:41,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:37:41,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 23:37:41,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:37:41,540 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:37:41,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:37:41,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:37:41,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 23:37:41,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:37:41,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-14 23:37:41,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:37:41,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:37:41,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:37:41,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:37:41,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:37:41,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 23:37:41,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:37:41,635 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:37:41,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 23:37:41,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:37:41,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 23:37:41,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:37:41,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 23:37:41,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:37:41,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:37:41,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:37:41,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 23:37:41,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:37:41,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 211 [2020-10-14 23:37:41,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:37:41,946 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:37:41,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 23:37:41,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:37:41,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 23:37:41,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:37:43,894 WARN L193 SmtUtils]: Spent 1.33 s on a formula simplification. DAG size of input: 119 DAG size of output: 89 [2020-10-14 23:37:43,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:37:43,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:37:43,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:37:44,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:37:44,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:37:44,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:37:44,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-14 23:37:44,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:37:44,022 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:37:44,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 23:37:44,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:37:44,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:37:44,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:37:44,346 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 23:37:44,346 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [485262695] [2020-10-14 23:37:44,346 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:37:44,346 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-14 23:37:44,346 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684880906] [2020-10-14 23:37:44,347 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-14 23:37:44,348 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:37:44,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-14 23:37:44,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=750, Unknown=0, NotChecked=0, Total=812 [2020-10-14 23:37:44,349 INFO L87 Difference]: Start difference. First operand 59 states and 67 transitions. Second operand 29 states. [2020-10-14 23:37:45,778 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 65 [2020-10-14 23:37:46,762 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-10-14 23:37:47,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:37:47,560 INFO L93 Difference]: Finished difference Result 73 states and 83 transitions. [2020-10-14 23:37:47,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-14 23:37:47,564 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 52 [2020-10-14 23:37:47,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:37:47,565 INFO L225 Difference]: With dead ends: 73 [2020-10-14 23:37:47,565 INFO L226 Difference]: Without dead ends: 71 [2020-10-14 23:37:47,566 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=127, Invalid=1513, Unknown=0, NotChecked=0, Total=1640 [2020-10-14 23:37:47,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-10-14 23:37:47,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 63. [2020-10-14 23:37:47,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-10-14 23:37:47,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 71 transitions. [2020-10-14 23:37:47,576 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 71 transitions. Word has length 52 [2020-10-14 23:37:47,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:37:47,577 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 71 transitions. [2020-10-14 23:37:47,577 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-14 23:37:47,577 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 71 transitions. [2020-10-14 23:37:47,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-14 23:37:47,578 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:37:47,578 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:37:47,578 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 23:37:47,578 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:37:47,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:37:47,579 INFO L82 PathProgramCache]: Analyzing trace with hash 1020734624, now seen corresponding path program 2 times [2020-10-14 23:37:47,579 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:37:47,579 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1395000925] [2020-10-14 23:37:47,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:37:47,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:37:47,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:37:47,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:37:50,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:37:50,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 23:37:50,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:37:50,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3236 [2020-10-14 23:37:50,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:37:50,832 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:37:50,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 37 [2020-10-14 23:37:50,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:37:50,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-14 23:37:50,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:37:51,108 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 33 [2020-10-14 23:37:51,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:37:51,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:37:51,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:37:51,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:37:51,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:37:51,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:37:51,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:37:51,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:37:51,162 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:37:51,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:37:51,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:37:51,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:37:51,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:37:51,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:37:51,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:37:51,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:37:51,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:37:51,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-14 23:37:51,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:37:51,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 658 [2020-10-14 23:37:51,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:37:51,861 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:37:51,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-14 23:37:51,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:37:51,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-14 23:37:51,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:37:52,366 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 48 [2020-10-14 23:37:52,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:37:52,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:37:52,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:37:52,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:37:52,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:37:52,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:37:52,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 23:37:52,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:37:52,746 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:37:52,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 23:37:52,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:37:52,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 23:37:52,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:37:52,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-14 23:37:52,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:37:52,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:37:52,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:37:52,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:37:52,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:37:52,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 23:37:52,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:37:52,823 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:37:52,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 23:37:52,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:37:52,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 23:37:52,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:37:52,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-14 23:37:52,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:37:52,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:37:52,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:37:52,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:37:52,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:37:52,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 23:37:52,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:37:52,924 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:37:52,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:37:52,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:37:52,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 23:37:52,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:37:53,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-14 23:37:53,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:37:53,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:37:53,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:37:53,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 23:37:53,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:37:53,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-14 23:37:53,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:37:53,169 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:37:53,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 23:37:53,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:37:53,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 23:37:53,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:37:53,790 WARN L193 SmtUtils]: Spent 352.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 75 [2020-10-14 23:37:54,140 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 72 [2020-10-14 23:37:54,443 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 75 [2020-10-14 23:37:54,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:37:54,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:37:54,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:37:54,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:37:54,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:37:54,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:37:54,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-14 23:37:54,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:37:54,663 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:37:54,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 23:37:54,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:37:54,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:37:54,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:37:55,313 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 38 [2020-10-14 23:37:55,336 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 14 proven. 18 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-14 23:37:55,336 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1395000925] [2020-10-14 23:37:55,336 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:37:55,336 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-10-14 23:37:55,336 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232937186] [2020-10-14 23:37:55,337 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-10-14 23:37:55,337 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:37:55,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-10-14 23:37:55,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=1032, Unknown=0, NotChecked=0, Total=1122 [2020-10-14 23:37:55,338 INFO L87 Difference]: Start difference. First operand 63 states and 71 transitions. Second operand 34 states. [2020-10-14 23:37:58,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:37:58,546 INFO L93 Difference]: Finished difference Result 73 states and 82 transitions. [2020-10-14 23:37:58,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-14 23:37:58,547 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 58 [2020-10-14 23:37:58,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:37:58,549 INFO L225 Difference]: With dead ends: 73 [2020-10-14 23:37:58,549 INFO L226 Difference]: Without dead ends: 71 [2020-10-14 23:37:58,550 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 479 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=203, Invalid=2247, Unknown=0, NotChecked=0, Total=2450 [2020-10-14 23:37:58,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-10-14 23:37:58,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 63. [2020-10-14 23:37:58,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-10-14 23:37:58,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 70 transitions. [2020-10-14 23:37:58,562 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 70 transitions. Word has length 58 [2020-10-14 23:37:58,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:37:58,562 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 70 transitions. [2020-10-14 23:37:58,562 INFO L480 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-10-14 23:37:58,562 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 70 transitions. [2020-10-14 23:37:58,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-14 23:37:58,563 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:37:58,563 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:37:58,564 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 23:37:58,564 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:37:58,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:37:58,564 INFO L82 PathProgramCache]: Analyzing trace with hash -1953044748, now seen corresponding path program 1 times [2020-10-14 23:37:58,564 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:37:58,564 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1535751213] [2020-10-14 23:37:58,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:37:58,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:37:58,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:38:00,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:38:00,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-14 23:38:00,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:38:00,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1826 [2020-10-14 23:38:00,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:38:00,414 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:38:00,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-14 23:38:00,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:38:00,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-14 23:38:00,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:38:00,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:38:00,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:38:00,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:38:00,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:38:00,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:38:00,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:38:00,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:38:00,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:38:00,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:38:00,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:38:00,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:38:00,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:38:00,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:38:00,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:38:00,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:38:00,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:38:00,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:38:00,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-14 23:38:00,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:38:00,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 178 [2020-10-14 23:38:00,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:38:00,778 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:38:00,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 23:38:00,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:38:00,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 23:38:00,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:38:01,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:38:01,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:38:01,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:38:01,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:38:01,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:38:01,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:38:01,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 23:38:01,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:38:01,173 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:38:01,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:38:01,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:38:01,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 23:38:01,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:38:01,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-14 23:38:01,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:38:01,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:38:01,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:38:01,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:38:01,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:38:01,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 23:38:01,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:38:01,294 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:38:01,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 23:38:01,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:38:01,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:38:01,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:38:01,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 23:38:01,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:38:01,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:38:01,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:38:01,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 23:38:01,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:38:01,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-14 23:38:01,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:38:01,578 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:38:01,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 23:38:01,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:38:01,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 23:38:01,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:38:02,120 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 44 [2020-10-14 23:38:02,446 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 57 [2020-10-14 23:38:04,425 WARN L193 SmtUtils]: Spent 1.64 s on a formula simplification. DAG size of input: 143 DAG size of output: 123 [2020-10-14 23:38:05,079 WARN L193 SmtUtils]: Spent 357.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 81 [2020-10-14 23:38:05,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:38:05,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:38:05,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:38:05,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:38:05,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:38:05,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:38:05,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-14 23:38:05,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:38:05,115 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:38:05,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 23:38:05,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:38:05,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:38:05,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:38:05,479 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 38 [2020-10-14 23:38:05,505 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 14 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 23:38:05,506 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1535751213] [2020-10-14 23:38:05,506 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:38:05,506 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-14 23:38:05,506 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823637931] [2020-10-14 23:38:05,507 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-14 23:38:05,507 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:38:05,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-14 23:38:05,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=808, Unknown=0, NotChecked=0, Total=870 [2020-10-14 23:38:05,508 INFO L87 Difference]: Start difference. First operand 63 states and 70 transitions. Second operand 30 states. [2020-10-14 23:38:06,192 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2020-10-14 23:38:08,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:38:08,615 INFO L93 Difference]: Finished difference Result 80 states and 89 transitions. [2020-10-14 23:38:08,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-14 23:38:08,616 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 55 [2020-10-14 23:38:08,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:38:08,617 INFO L225 Difference]: With dead ends: 80 [2020-10-14 23:38:08,617 INFO L226 Difference]: Without dead ends: 77 [2020-10-14 23:38:08,618 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=124, Invalid=1516, Unknown=0, NotChecked=0, Total=1640 [2020-10-14 23:38:08,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-10-14 23:38:08,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 61. [2020-10-14 23:38:08,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-14 23:38:08,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 68 transitions. [2020-10-14 23:38:08,626 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 68 transitions. Word has length 55 [2020-10-14 23:38:08,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:38:08,626 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 68 transitions. [2020-10-14 23:38:08,627 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-14 23:38:08,627 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 68 transitions. [2020-10-14 23:38:08,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-14 23:38:08,627 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:38:08,627 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:38:08,627 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 23:38:08,628 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:38:08,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:38:08,628 INFO L82 PathProgramCache]: Analyzing trace with hash -414803304, now seen corresponding path program 2 times [2020-10-14 23:38:08,628 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:38:08,628 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [323634267] [2020-10-14 23:38:08,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:38:08,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:38:08,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:38:11,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:38:12,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:38:12,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 23:38:12,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:38:12,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3729 [2020-10-14 23:38:12,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:38:12,392 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:38:12,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 36 [2020-10-14 23:38:12,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:38:12,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-14 23:38:12,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:38:12,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:38:12,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:38:12,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:38:12,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:38:12,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:38:12,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:38:12,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:38:12,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:38:12,777 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:38:12,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:38:12,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:38:12,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:38:12,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:38:12,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:38:12,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:38:12,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:38:13,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:38:13,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-14 23:38:13,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:38:13,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 227 [2020-10-14 23:38:13,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:38:13,044 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:38:13,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-14 23:38:13,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:38:13,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 23:38:13,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:38:13,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:38:13,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:38:13,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:38:13,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:38:13,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:38:13,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:38:13,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 23:38:13,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:38:13,764 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:38:13,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 23:38:13,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:38:13,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 23:38:13,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:38:13,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-14 23:38:13,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:38:13,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:38:13,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:38:13,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:38:13,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:38:13,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-14 23:38:13,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:38:13,911 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:38:13,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 23:38:13,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:38:13,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:38:13,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:38:14,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 23:38:14,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:38:14,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:38:14,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:38:14,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 23:38:14,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:38:14,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 199 [2020-10-14 23:38:14,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:38:14,456 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:38:14,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 23:38:14,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:38:14,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 23:38:14,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:38:15,085 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 57 [2020-10-14 23:38:15,564 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 74 [2020-10-14 23:38:16,847 WARN L193 SmtUtils]: Spent 953.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 104 [2020-10-14 23:38:17,152 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 61 [2020-10-14 23:38:17,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:38:17,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:38:17,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:38:17,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:38:17,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:38:17,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:38:17,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-14 23:38:17,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:38:17,196 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:38:17,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 23:38:17,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:38:17,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:38:17,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:38:17,976 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 39 [2020-10-14 23:38:18,004 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 23:38:18,005 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [323634267] [2020-10-14 23:38:18,005 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:38:18,005 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-14 23:38:18,006 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053511317] [2020-10-14 23:38:18,006 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-14 23:38:18,006 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:38:18,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-14 23:38:18,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=868, Unknown=0, NotChecked=0, Total=930 [2020-10-14 23:38:18,008 INFO L87 Difference]: Start difference. First operand 61 states and 68 transitions. Second operand 31 states. [2020-10-14 23:38:19,071 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 61 [2020-10-14 23:38:19,978 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 61 [2020-10-14 23:38:20,382 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 83 [2020-10-14 23:38:22,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:38:22,499 INFO L93 Difference]: Finished difference Result 78 states and 87 transitions. [2020-10-14 23:38:22,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-14 23:38:22,501 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 56 [2020-10-14 23:38:22,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:38:22,502 INFO L225 Difference]: With dead ends: 78 [2020-10-14 23:38:22,502 INFO L226 Difference]: Without dead ends: 76 [2020-10-14 23:38:22,503 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=140, Invalid=1840, Unknown=0, NotChecked=0, Total=1980 [2020-10-14 23:38:22,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-14 23:38:22,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 67. [2020-10-14 23:38:22,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-14 23:38:22,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 74 transitions. [2020-10-14 23:38:22,512 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 74 transitions. Word has length 56 [2020-10-14 23:38:22,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:38:22,513 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 74 transitions. [2020-10-14 23:38:22,513 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-14 23:38:22,513 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 74 transitions. [2020-10-14 23:38:22,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-14 23:38:22,514 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:38:22,514 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:38:22,514 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 23:38:22,514 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:38:22,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:38:22,515 INFO L82 PathProgramCache]: Analyzing trace with hash 1893101558, now seen corresponding path program 3 times [2020-10-14 23:38:22,515 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:38:22,515 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1098363557] [2020-10-14 23:38:22,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:38:22,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:38:22,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:38:22,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:38:27,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:38:27,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 23:38:27,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:38:27,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5045 [2020-10-14 23:38:27,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:38:27,580 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:38:27,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-14 23:38:27,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:38:27,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-14 23:38:27,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:38:27,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:38:27,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:38:27,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:38:27,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:38:27,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:38:27,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:38:27,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:38:27,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:38:27,845 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:38:27,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:38:27,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:38:27,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:38:27,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:38:27,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:38:27,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:38:27,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:38:28,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:38:28,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-14 23:38:28,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:38:28,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 361 [2020-10-14 23:38:28,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:38:28,251 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:38:28,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 23:38:28,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:38:28,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-14 23:38:28,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:38:28,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:38:28,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:38:28,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:38:28,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:38:28,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:38:28,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:38:28,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 23:38:28,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:38:28,753 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:38:28,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:38:28,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:38:28,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:38:28,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:38:28,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-14 23:38:28,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:38:28,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:38:28,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:38:28,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:38:28,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:38:28,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 23:38:28,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:38:28,767 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:38:28,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:38:28,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:38:28,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 23:38:28,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:38:28,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-14 23:38:28,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:38:28,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:38:28,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:38:28,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:38:28,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:38:28,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 23:38:28,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:38:28,857 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:38:28,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 23:38:28,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:38:28,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 23:38:28,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:38:28,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-14 23:38:28,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:38:28,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:38:29,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:38:29,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 23:38:29,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:38:29,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-10-14 23:38:29,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:38:29,138 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:38:29,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 23:38:29,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:38:29,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 23:38:29,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:38:29,699 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 51 [2020-10-14 23:38:30,026 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 59 [2020-10-14 23:38:35,676 WARN L193 SmtUtils]: Spent 5.18 s on a formula simplification. DAG size of input: 179 DAG size of output: 150 [2020-10-14 23:38:38,693 WARN L193 SmtUtils]: Spent 2.28 s on a formula simplification. DAG size of input: 140 DAG size of output: 111 [2020-10-14 23:38:38,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:38:38,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:38:38,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:38:38,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:38:38,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:38:38,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:38:38,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-14 23:38:38,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:38:38,736 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:38:38,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 23:38:38,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:38:38,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:38:38,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:38:39,194 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 38 [2020-10-14 23:38:39,224 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 25 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-14 23:38:39,224 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1098363557] [2020-10-14 23:38:39,225 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:38:39,225 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-14 23:38:39,225 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186049919] [2020-10-14 23:38:39,225 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-14 23:38:39,225 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:38:39,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-14 23:38:39,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=803, Unknown=0, NotChecked=0, Total=870 [2020-10-14 23:38:39,226 INFO L87 Difference]: Start difference. First operand 67 states and 74 transitions. Second operand 30 states. [2020-10-14 23:38:40,057 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 51 [2020-10-14 23:38:42,382 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2020-10-14 23:38:44,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:38:44,100 INFO L93 Difference]: Finished difference Result 79 states and 88 transitions. [2020-10-14 23:38:44,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-14 23:38:44,101 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 62 [2020-10-14 23:38:44,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:38:44,102 INFO L225 Difference]: With dead ends: 79 [2020-10-14 23:38:44,103 INFO L226 Difference]: Without dead ends: 77 [2020-10-14 23:38:44,104 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 12.1s TimeCoverageRelationStatistics Valid=151, Invalid=1741, Unknown=0, NotChecked=0, Total=1892 [2020-10-14 23:38:44,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-10-14 23:38:44,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 63. [2020-10-14 23:38:44,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-10-14 23:38:44,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 70 transitions. [2020-10-14 23:38:44,115 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 70 transitions. Word has length 62 [2020-10-14 23:38:44,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:38:44,116 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 70 transitions. [2020-10-14 23:38:44,116 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-14 23:38:44,116 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 70 transitions. [2020-10-14 23:38:44,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-14 23:38:44,117 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:38:44,117 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:38:44,117 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 23:38:44,117 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:38:44,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:38:44,117 INFO L82 PathProgramCache]: Analyzing trace with hash -782885666, now seen corresponding path program 2 times [2020-10-14 23:38:44,118 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:38:44,118 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1110137225] [2020-10-14 23:38:44,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:38:44,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:38:44,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:38:44,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:38:44,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:38:45,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:38:45,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 23:38:45,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:38:45,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1336 [2020-10-14 23:38:45,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:38:45,469 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:38:45,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:38:45,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:38:45,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-14 23:38:45,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:38:45,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:38:45,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:38:45,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:38:45,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:38:45,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:38:45,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:38:45,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:38:45,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:38:45,628 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:38:45,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:38:45,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:38:45,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:38:45,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:38:45,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:38:45,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:38:45,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:38:45,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:38:45,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:38:45,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-14 23:38:45,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:38:45,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-10-14 23:38:45,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:38:45,830 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:38:45,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:38:45,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:38:45,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 23:38:45,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:38:45,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:38:45,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:38:45,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:38:45,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:38:45,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:38:45,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:38:45,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 23:38:45,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:38:45,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:38:45,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:38:45,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:38:45,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:38:45,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:38:45,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-14 23:38:45,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:38:45,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:38:45,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:38:45,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:38:45,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:38:45,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 23:38:45,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:38:45,864 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:38:45,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:38:45,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:38:45,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:38:45,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:38:45,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 23:38:45,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:38:45,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:38:45,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:38:45,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 23:38:45,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:38:45,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-14 23:38:45,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:38:45,907 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:38:45,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:38:45,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:38:45,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 23:38:45,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:38:45,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:38:45,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:38:45,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:38:45,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:38:45,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:38:45,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:38:45,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 23:38:45,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:38:45,928 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:38:45,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:38:45,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:38:45,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:38:45,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:38:45,942 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-10-14 23:38:45,943 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1110137225] [2020-10-14 23:38:45,949 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:38:45,949 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 23:38:45,950 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410459153] [2020-10-14 23:38:45,950 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 23:38:45,950 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:38:45,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 23:38:45,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-14 23:38:45,951 INFO L87 Difference]: Start difference. First operand 63 states and 70 transitions. Second operand 9 states. [2020-10-14 23:38:46,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:38:46,348 INFO L93 Difference]: Finished difference Result 85 states and 93 transitions. [2020-10-14 23:38:46,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 23:38:46,349 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 59 [2020-10-14 23:38:46,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:38:46,351 INFO L225 Difference]: With dead ends: 85 [2020-10-14 23:38:46,351 INFO L226 Difference]: Without dead ends: 82 [2020-10-14 23:38:46,351 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2020-10-14 23:38:46,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-10-14 23:38:46,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 75. [2020-10-14 23:38:46,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-14 23:38:46,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 84 transitions. [2020-10-14 23:38:46,364 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 84 transitions. Word has length 59 [2020-10-14 23:38:46,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:38:46,364 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 84 transitions. [2020-10-14 23:38:46,364 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 23:38:46,365 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 84 transitions. [2020-10-14 23:38:46,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-14 23:38:46,365 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:38:46,366 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:38:46,366 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 23:38:46,366 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:38:46,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:38:46,366 INFO L82 PathProgramCache]: Analyzing trace with hash 1500389870, now seen corresponding path program 4 times [2020-10-14 23:38:46,367 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:38:46,367 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1632898126] [2020-10-14 23:38:46,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:38:46,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:38:46,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:38:47,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:38:48,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:38:48,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:38:49,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:38:51,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:38:51,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:38:51,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 23:38:51,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 23:38:51,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5545 [2020-10-14 23:38:51,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:38:51,946 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:38:51,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-14 23:38:51,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:38:51,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-14 23:38:51,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:38:52,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:38:52,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:38:52,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:38:52,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:38:52,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:38:52,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:38:52,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:38:52,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:38:52,425 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:38:52,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:38:52,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:38:52,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:38:52,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:38:52,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:38:52,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:38:52,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:38:52,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:38:52,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-14 23:38:52,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:38:52,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 456 [2020-10-14 23:38:52,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:38:52,961 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:38:52,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 23:38:52,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:38:52,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 23:38:52,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:38:53,508 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 43 [2020-10-14 23:38:53,895 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 41 [2020-10-14 23:38:54,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:38:54,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:38:54,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:38:54,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:38:54,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:38:54,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:38:54,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 23:38:54,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:38:54,025 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:38:54,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:38:54,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:38:54,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 23:38:54,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:38:54,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-14 23:38:54,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:38:54,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:38:54,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:38:54,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:38:54,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:38:54,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-14 23:38:54,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:38:54,235 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:38:54,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 23:38:54,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:38:54,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:38:54,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:38:54,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 23:38:54,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:38:54,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:38:54,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:38:54,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 23:38:54,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:38:54,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 164 [2020-10-14 23:38:54,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:38:54,704 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:38:54,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 23:38:54,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:38:54,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 23:38:54,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:38:55,224 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 34 [2020-10-14 23:38:55,662 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 56 [2020-10-14 23:38:57,079 WARN L193 SmtUtils]: Spent 1.16 s on a formula simplification. DAG size of input: 154 DAG size of output: 119 [2020-10-14 23:38:58,396 WARN L193 SmtUtils]: Spent 535.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 86 [2020-10-14 23:38:59,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:38:59,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:38:59,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:38:59,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:38:59,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:38:59,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:38:59,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 23:38:59,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:38:59,196 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:38:59,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 23:38:59,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:38:59,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:38:59,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:38:59,590 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 10 proven. 22 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 23:38:59,591 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1632898126] [2020-10-14 23:38:59,591 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:38:59,591 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-14 23:38:59,591 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567075216] [2020-10-14 23:38:59,592 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-14 23:38:59,592 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:38:59,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-14 23:38:59,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=865, Unknown=0, NotChecked=0, Total=930 [2020-10-14 23:38:59,593 INFO L87 Difference]: Start difference. First operand 75 states and 84 transitions. Second operand 31 states. [2020-10-14 23:39:00,440 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 51 [2020-10-14 23:39:00,894 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 45 [2020-10-14 23:39:01,256 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2020-10-14 23:39:01,908 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 84 [2020-10-14 23:39:04,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:39:04,361 INFO L93 Difference]: Finished difference Result 86 states and 97 transitions. [2020-10-14 23:39:04,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-14 23:39:04,362 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 60 [2020-10-14 23:39:04,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:39:04,363 INFO L225 Difference]: With dead ends: 86 [2020-10-14 23:39:04,363 INFO L226 Difference]: Without dead ends: 61 [2020-10-14 23:39:04,365 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=140, Invalid=1752, Unknown=0, NotChecked=0, Total=1892 [2020-10-14 23:39:04,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-10-14 23:39:04,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 59. [2020-10-14 23:39:04,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-14 23:39:04,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 66 transitions. [2020-10-14 23:39:04,375 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 66 transitions. Word has length 60 [2020-10-14 23:39:04,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:39:04,375 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 66 transitions. [2020-10-14 23:39:04,376 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-14 23:39:04,376 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 66 transitions. [2020-10-14 23:39:04,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-14 23:39:04,376 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:39:04,376 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:39:04,377 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 23:39:04,377 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:39:04,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:39:04,377 INFO L82 PathProgramCache]: Analyzing trace with hash 174383808, now seen corresponding path program 3 times [2020-10-14 23:39:04,377 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:39:04,377 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1948991903] [2020-10-14 23:39:04,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:39:04,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:39:04,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:39:04,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:39:07,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:39:09,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:39:09,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-14 23:39:09,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:39:09,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-14 23:39:09,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:39:09,417 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:39:09,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 40 [2020-10-14 23:39:09,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:39:09,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 23:39:09,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:39:09,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:39:09,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:39:09,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:39:09,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:39:09,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:39:09,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:39:09,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:39:09,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:39:09,628 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:39:09,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:39:09,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:39:09,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:39:09,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:39:09,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:39:09,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:39:09,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:39:10,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:39:10,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-14 23:39:10,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:39:10,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 670 [2020-10-14 23:39:10,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:39:10,363 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:39:10,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-14 23:39:10,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:39:10,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-14 23:39:10,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:39:10,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:39:10,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:39:10,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:39:10,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:39:10,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:39:10,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:39:10,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 23:39:10,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:39:10,945 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:39:10,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:39:10,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:39:10,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 23:39:10,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:39:11,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-14 23:39:11,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:39:11,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:39:11,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:39:11,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:39:11,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:39:11,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-14 23:39:11,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:39:11,062 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:39:11,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 23:39:11,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:39:11,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:39:11,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:39:11,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-14 23:39:11,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:39:11,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:39:11,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:39:11,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:39:11,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:39:11,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 23:39:11,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:39:11,338 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:39:11,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 23:39:11,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:39:11,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:39:11,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:39:11,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-14 23:39:11,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:39:11,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:39:11,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:39:11,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 23:39:11,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:39:11,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 205 [2020-10-14 23:39:11,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:39:11,790 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:39:11,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 23:39:11,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:39:11,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 23:39:11,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:39:12,698 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 39 [2020-10-14 23:39:13,007 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 47 [2020-10-14 23:39:13,749 WARN L193 SmtUtils]: Spent 514.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 93 [2020-10-14 23:39:16,028 WARN L193 SmtUtils]: Spent 1.33 s on a formula simplification. DAG size of input: 117 DAG size of output: 98 [2020-10-14 23:39:16,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:39:16,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:39:16,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:39:16,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:39:16,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:39:16,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:39:16,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 23:39:16,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:39:16,059 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:39:16,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 23:39:16,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:39:16,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:39:16,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:39:16,398 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 14 proven. 22 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-14 23:39:16,399 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1948991903] [2020-10-14 23:39:16,399 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:39:16,399 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2020-10-14 23:39:16,399 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618571444] [2020-10-14 23:39:16,400 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-10-14 23:39:16,400 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:39:16,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-10-14 23:39:16,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=1111, Unknown=0, NotChecked=0, Total=1190 [2020-10-14 23:39:16,401 INFO L87 Difference]: Start difference. First operand 59 states and 66 transitions. Second operand 35 states. [2020-10-14 23:39:20,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:39:20,950 INFO L93 Difference]: Finished difference Result 68 states and 74 transitions. [2020-10-14 23:39:20,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-14 23:39:20,952 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 65 [2020-10-14 23:39:20,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:39:20,953 INFO L225 Difference]: With dead ends: 68 [2020-10-14 23:39:20,953 INFO L226 Difference]: Without dead ends: 65 [2020-10-14 23:39:20,955 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 372 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=194, Invalid=2356, Unknown=0, NotChecked=0, Total=2550 [2020-10-14 23:39:20,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-10-14 23:39:20,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 59. [2020-10-14 23:39:20,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-14 23:39:20,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 65 transitions. [2020-10-14 23:39:20,966 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 65 transitions. Word has length 65 [2020-10-14 23:39:20,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:39:20,967 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 65 transitions. [2020-10-14 23:39:20,967 INFO L480 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-10-14 23:39:20,967 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 65 transitions. [2020-10-14 23:39:20,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-14 23:39:20,968 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:39:20,968 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:39:20,968 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 23:39:20,968 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:39:20,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:39:20,969 INFO L82 PathProgramCache]: Analyzing trace with hash 1110972492, now seen corresponding path program 5 times [2020-10-14 23:39:20,969 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:39:20,969 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [66031241] [2020-10-14 23:39:20,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:39:20,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:39:20,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:39:21,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:39:23,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:39:25,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:39:25,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-14 23:39:25,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:39:25,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-14 23:39:25,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:39:25,994 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:39:25,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 43 [2020-10-14 23:39:25,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:39:25,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-14 23:39:25,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:39:26,305 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 36 [2020-10-14 23:39:26,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:39:26,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:39:26,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:39:26,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:39:26,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:39:26,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:39:26,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:39:26,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:39:26,452 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:39:26,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:39:26,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:39:26,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:39:26,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:39:26,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:39:26,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:39:26,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:39:26,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:39:28,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:39:28,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-14 23:39:28,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:39:28,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2132 [2020-10-14 23:39:28,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:39:28,634 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:39:28,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-14 23:39:28,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:39:28,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-14 23:39:28,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:39:29,112 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 36 [2020-10-14 23:39:29,420 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 30 [2020-10-14 23:39:29,652 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 39 [2020-10-14 23:39:30,036 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 63 [2020-10-14 23:39:30,305 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 49 [2020-10-14 23:39:30,691 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 58 [2020-10-14 23:39:30,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:39:30,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:39:30,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:39:30,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:39:30,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:39:30,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:39:30,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 23:39:30,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:39:30,794 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:39:30,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 23:39:30,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:39:30,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 23:39:30,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:39:30,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-14 23:39:30,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:39:30,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:39:30,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:39:30,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:39:30,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:39:30,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 23:39:30,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:39:30,924 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:39:30,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:39:30,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:39:30,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 23:39:30,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:39:31,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-14 23:39:31,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:39:31,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:39:31,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:39:31,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:39:31,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:39:31,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-14 23:39:31,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:39:31,115 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:39:31,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 23:39:31,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:39:31,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:39:31,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:39:31,547 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 34 [2020-10-14 23:39:31,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-14 23:39:31,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:39:31,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:39:31,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:39:31,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 23:39:31,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:39:31,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 184 [2020-10-14 23:39:31,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:39:31,757 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:39:31,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 23:39:31,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:39:31,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 23:39:31,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:39:33,457 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 46 [2020-10-14 23:39:35,027 WARN L193 SmtUtils]: Spent 1.26 s on a formula simplification. DAG size of input: 117 DAG size of output: 76 [2020-10-14 23:39:42,429 WARN L193 SmtUtils]: Spent 6.23 s on a formula simplification. DAG size of input: 281 DAG size of output: 148 [2020-10-14 23:39:49,050 WARN L193 SmtUtils]: Spent 5.13 s on a formula simplification. DAG size of input: 349 DAG size of output: 145 [2020-10-14 23:39:51,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:39:51,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:39:51,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:39:51,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:39:51,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:39:51,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:39:51,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-14 23:39:51,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:39:51,167 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:39:51,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 23:39:51,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:39:51,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:39:51,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:39:52,117 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 42 [2020-10-14 23:39:52,163 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 16 proven. 24 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-14 23:39:52,163 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [66031241] [2020-10-14 23:39:52,163 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:39:52,164 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2020-10-14 23:39:52,164 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803844762] [2020-10-14 23:39:52,164 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-10-14 23:39:52,165 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:39:52,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-10-14 23:39:52,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=1246, Unknown=0, NotChecked=0, Total=1332 [2020-10-14 23:39:52,166 INFO L87 Difference]: Start difference. First operand 59 states and 65 transitions. Second operand 37 states. [2020-10-14 23:39:53,413 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-14 23:39:54,411 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 38 [2020-10-14 23:39:54,972 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54