/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem18_label37.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 04:19:29,593 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 04:19:29,596 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 04:19:29,636 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 04:19:29,637 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 04:19:29,645 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 04:19:29,647 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 04:19:29,651 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 04:19:29,654 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 04:19:29,657 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 04:19:29,658 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 04:19:29,659 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 04:19:29,659 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 04:19:29,662 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 04:19:29,665 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 04:19:29,667 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 04:19:29,668 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 04:19:29,669 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 04:19:29,670 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 04:19:29,678 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 04:19:29,681 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 04:19:29,682 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 04:19:29,683 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 04:19:29,683 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 04:19:29,695 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 04:19:29,695 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 04:19:29,696 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 04:19:29,698 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 04:19:29,699 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 04:19:29,706 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 04:19:29,706 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 04:19:29,707 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 04:19:29,708 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 04:19:29,708 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 04:19:29,712 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 04:19:29,712 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 04:19:29,713 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 04:19:29,713 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 04:19:29,714 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 04:19:29,715 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 04:19:29,716 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 04:19:29,716 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 04:19:29,753 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 04:19:29,754 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 04:19:29,756 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 04:19:29,756 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 04:19:29,756 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 04:19:29,757 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 04:19:29,757 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 04:19:29,757 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 04:19:29,757 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 04:19:29,757 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 04:19:29,758 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 04:19:29,759 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 04:19:29,759 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 04:19:29,759 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 04:19:29,759 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 04:19:29,760 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 04:19:29,760 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 04:19:29,760 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 04:19:29,760 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 04:19:29,760 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 04:19:29,761 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 04:19:29,761 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 04:19:29,761 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 04:19:29,762 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 04:19:29,762 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 04:19:29,762 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 04:19:29,762 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 04:19:29,762 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 04:19:29,762 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 04:19:29,763 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 04:19:30,059 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 04:19:30,073 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 04:19:30,077 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 04:19:30,079 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 04:19:30,079 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 04:19:30,080 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label37.c [2020-10-14 04:19:30,153 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/38c5ff188/44666421df0c477fa388258faee07cf7/FLAG2454bdf2a [2020-10-14 04:19:30,884 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 04:19:30,885 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem18_label37.c [2020-10-14 04:19:30,913 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/38c5ff188/44666421df0c477fa388258faee07cf7/FLAG2454bdf2a [2020-10-14 04:19:30,984 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/38c5ff188/44666421df0c477fa388258faee07cf7 [2020-10-14 04:19:30,997 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 04:19:30,999 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 04:19:31,002 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 04:19:31,002 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 04:19:31,006 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 04:19:31,007 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:19:30" (1/1) ... [2020-10-14 04:19:31,011 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@157ca41e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:19:31, skipping insertion in model container [2020-10-14 04:19:31,011 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:19:30" (1/1) ... [2020-10-14 04:19:31,020 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 04:19:31,157 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 04:19:32,428 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:19:32,433 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 04:19:32,936 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:19:32,975 INFO L208 MainTranslator]: Completed translation [2020-10-14 04:19:32,978 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:19:32 WrapperNode [2020-10-14 04:19:32,978 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 04:19:32,980 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 04:19:32,980 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 04:19:32,980 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 04:19:32,999 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:19:32" (1/1) ... [2020-10-14 04:19:33,002 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:19:32" (1/1) ... [2020-10-14 04:19:33,074 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:19:32" (1/1) ... [2020-10-14 04:19:33,075 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:19:32" (1/1) ... [2020-10-14 04:19:33,158 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:19:32" (1/1) ... [2020-10-14 04:19:33,293 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:19:32" (1/1) ... [2020-10-14 04:19:33,309 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:19:32" (1/1) ... [2020-10-14 04:19:33,327 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 04:19:33,327 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 04:19:33,327 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 04:19:33,328 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 04:19:33,329 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:19:32" (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 04:19:33,409 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 04:19:33,410 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 04:19:33,410 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 04:19:33,410 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 04:19:33,410 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 04:19:33,411 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 04:19:33,411 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 04:19:33,411 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 04:19:33,411 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 04:19:33,411 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 04:19:33,412 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 04:19:33,412 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 04:19:33,412 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 04:19:33,412 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 04:19:33,413 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 04:19:39,546 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 04:19:39,547 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 04:19:39,568 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:19:39 BoogieIcfgContainer [2020-10-14 04:19:39,568 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 04:19:39,572 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 04:19:39,572 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 04:19:39,576 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 04:19:39,576 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 04:19:30" (1/3) ... [2020-10-14 04:19:39,578 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2da0086a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:19:39, skipping insertion in model container [2020-10-14 04:19:39,578 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:19:32" (2/3) ... [2020-10-14 04:19:39,578 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2da0086a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:19:39, skipping insertion in model container [2020-10-14 04:19:39,579 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:19:39" (3/3) ... [2020-10-14 04:19:39,582 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem18_label37.c [2020-10-14 04:19:39,596 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 04:19:39,608 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 04:19:39,622 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 04:19:39,654 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 04:19:39,654 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 04:19:39,655 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 04:19:39,655 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 04:19:39,655 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 04:19:39,655 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 04:19:39,656 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 04:19:39,656 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 04:19:39,702 INFO L276 IsEmpty]: Start isEmpty. Operand 774 states. [2020-10-14 04:19:39,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-14 04:19:39,716 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:19:39,717 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:19:39,717 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:19:39,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:19:39,724 INFO L82 PathProgramCache]: Analyzing trace with hash -545503303, now seen corresponding path program 1 times [2020-10-14 04:19:39,734 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:19:39,735 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1945575724] [2020-10-14 04:19:39,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:19:39,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:19:40,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:19:40,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:19:40,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 04:19:40,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:19:40,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 449 [2020-10-14 04:19:40,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:19:40,426 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:19:40,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 04:19:40,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 04:19:40,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-14 04:19:40,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 04:19:40,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:19:40,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:19:40,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:19:40,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:19:40,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:19:40,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:19:40,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-14 04:19:40,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:19:40,616 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:19:40,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:19:40,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:19:40,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 04:19:40,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 04:19:40,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:19:40,649 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1945575724] [2020-10-14 04:19:40,652 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:19:40,652 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 04:19:40,653 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597390150] [2020-10-14 04:19:40,661 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 04:19:40,662 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:19:40,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 04:19:40,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 04:19:40,681 INFO L87 Difference]: Start difference. First operand 774 states. Second operand 4 states. [2020-10-14 04:19:50,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:19:50,103 INFO L93 Difference]: Finished difference Result 2270 states and 4349 transitions. [2020-10-14 04:19:50,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:19:50,106 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 62 [2020-10-14 04:19:50,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:19:50,145 INFO L225 Difference]: With dead ends: 2270 [2020-10-14 04:19:50,145 INFO L226 Difference]: Without dead ends: 1432 [2020-10-14 04:19:50,156 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:19:50,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1432 states. [2020-10-14 04:19:50,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1432 to 1425. [2020-10-14 04:19:50,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1425 states. [2020-10-14 04:19:50,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1425 states to 1425 states and 2229 transitions. [2020-10-14 04:19:50,340 INFO L78 Accepts]: Start accepts. Automaton has 1425 states and 2229 transitions. Word has length 62 [2020-10-14 04:19:50,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:19:50,341 INFO L479 AbstractCegarLoop]: Abstraction has 1425 states and 2229 transitions. [2020-10-14 04:19:50,342 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 04:19:50,342 INFO L276 IsEmpty]: Start isEmpty. Operand 1425 states and 2229 transitions. [2020-10-14 04:19:50,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-14 04:19:50,358 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:19:50,359 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:19:50,360 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 04:19:50,360 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:19:50,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:19:50,361 INFO L82 PathProgramCache]: Analyzing trace with hash -568428812, now seen corresponding path program 1 times [2020-10-14 04:19:50,362 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:19:50,362 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1848048827] [2020-10-14 04:19:50,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:19:50,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:19:50,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:19:50,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:19:51,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:19:51,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:19:51,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-14 04:19:51,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:19:51,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1554 [2020-10-14 04:19:51,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:19:51,977 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:19:51,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:19:51,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-14 04:19:51,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-14 04:19:51,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 04:19:52,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:19:52,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:19:52,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:19:52,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:19:52,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:19:52,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:19:52,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 04:19:52,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:19:52,067 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:19:52,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:19:52,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:19:52,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:19:52,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:19:52,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:19:52,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:19:52,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:19:52,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:19:52,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-14 04:19:52,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:19:52,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-14 04:19:52,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:19:52,160 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:19:52,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:19:52,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:19:52,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-14 04:19:52,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:19:52,206 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 54 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:19:52,206 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1848048827] [2020-10-14 04:19:52,207 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:19:52,207 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:19:52,207 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256642729] [2020-10-14 04:19:52,209 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:19:52,210 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:19:52,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:19:52,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:19:52,211 INFO L87 Difference]: Start difference. First operand 1425 states and 2229 transitions. Second operand 5 states. [2020-10-14 04:19:52,554 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 33 [2020-10-14 04:20:03,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:20:03,341 INFO L93 Difference]: Finished difference Result 4276 states and 6734 transitions. [2020-10-14 04:20:03,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:20:03,342 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 132 [2020-10-14 04:20:03,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:20:03,359 INFO L225 Difference]: With dead ends: 4276 [2020-10-14 04:20:03,359 INFO L226 Difference]: Without dead ends: 2857 [2020-10-14 04:20:03,366 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:20:03,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2857 states. [2020-10-14 04:20:03,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2857 to 2853. [2020-10-14 04:20:03,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2853 states. [2020-10-14 04:20:03,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2853 states to 2853 states and 4026 transitions. [2020-10-14 04:20:03,457 INFO L78 Accepts]: Start accepts. Automaton has 2853 states and 4026 transitions. Word has length 132 [2020-10-14 04:20:03,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:20:03,460 INFO L479 AbstractCegarLoop]: Abstraction has 2853 states and 4026 transitions. [2020-10-14 04:20:03,460 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:20:03,461 INFO L276 IsEmpty]: Start isEmpty. Operand 2853 states and 4026 transitions. [2020-10-14 04:20:03,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-10-14 04:20:03,466 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:20:03,466 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:20:03,466 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 04:20:03,467 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:20:03,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:20:03,467 INFO L82 PathProgramCache]: Analyzing trace with hash -1470879444, now seen corresponding path program 1 times [2020-10-14 04:20:03,467 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:20:03,468 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1010367196] [2020-10-14 04:20:03,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:20:03,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:20:03,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:03,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:04,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:20:04,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-14 04:20:04,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:20:04,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 850 [2020-10-14 04:20:04,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:20:04,360 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:20:04,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:20:04,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-14 04:20:04,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-14 04:20:04,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:20:04,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:20:04,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:20:04,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:04,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:20:04,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:20:04,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:20:04,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:20:04,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:20:04,466 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:20:04,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:20:04,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:20:04,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:20:04,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:20:04,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:20:04,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:20:04,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:04,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:20:04,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 04:20:04,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:20:04,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-14 04:20:04,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:20:04,572 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:20:04,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:20:04,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:20:04,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-14 04:20:04,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:20:04,650 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 54 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:20:04,651 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1010367196] [2020-10-14 04:20:04,652 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:20:04,652 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:20:04,653 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519967941] [2020-10-14 04:20:04,655 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:20:04,656 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:20:04,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:20:04,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:20:04,657 INFO L87 Difference]: Start difference. First operand 2853 states and 4026 transitions. Second operand 5 states. [2020-10-14 04:20:13,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:20:13,025 INFO L93 Difference]: Finished difference Result 8547 states and 12183 transitions. [2020-10-14 04:20:13,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:20:13,027 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 136 [2020-10-14 04:20:13,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:20:13,053 INFO L225 Difference]: With dead ends: 8547 [2020-10-14 04:20:13,054 INFO L226 Difference]: Without dead ends: 5700 [2020-10-14 04:20:13,062 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:20:13,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5700 states. [2020-10-14 04:20:13,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5700 to 5696. [2020-10-14 04:20:13,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5696 states. [2020-10-14 04:20:13,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5696 states to 5696 states and 7348 transitions. [2020-10-14 04:20:13,207 INFO L78 Accepts]: Start accepts. Automaton has 5696 states and 7348 transitions. Word has length 136 [2020-10-14 04:20:13,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:20:13,208 INFO L479 AbstractCegarLoop]: Abstraction has 5696 states and 7348 transitions. [2020-10-14 04:20:13,208 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:20:13,208 INFO L276 IsEmpty]: Start isEmpty. Operand 5696 states and 7348 transitions. [2020-10-14 04:20:13,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-10-14 04:20:13,211 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:20:13,211 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:20:13,211 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 04:20:13,212 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:20:13,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:20:13,212 INFO L82 PathProgramCache]: Analyzing trace with hash 308008176, now seen corresponding path program 1 times [2020-10-14 04:20:13,212 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:20:13,213 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [201184284] [2020-10-14 04:20:13,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:20:13,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:20:13,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:13,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:13,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:14,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:20:14,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-14 04:20:14,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:20:14,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1199 [2020-10-14 04:20:14,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:20:14,442 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:20:14,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:20:14,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 98 [2020-10-14 04:20:14,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-14 04:20:14,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:20:14,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:20:14,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:20:14,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:14,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:20:14,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:20:14,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:20:14,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:20:14,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:20:14,516 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:20:14,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:20:14,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:20:14,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:20:14,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:20:14,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:20:14,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:20:14,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:14,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:20:14,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-14 04:20:14,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:20:14,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-14 04:20:14,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:20:14,618 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:20:14,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:20:14,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:20:14,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-14 04:20:14,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:20:14,669 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 54 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:20:14,671 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [201184284] [2020-10-14 04:20:14,672 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:20:14,672 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:20:14,673 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914388605] [2020-10-14 04:20:14,674 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:20:14,675 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:20:14,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:20:14,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:20:14,676 INFO L87 Difference]: Start difference. First operand 5696 states and 7348 transitions. Second operand 5 states. [2020-10-14 04:20:23,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:20:23,197 INFO L93 Difference]: Finished difference Result 14227 states and 18961 transitions. [2020-10-14 04:20:23,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:20:23,198 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 150 [2020-10-14 04:20:23,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:20:23,244 INFO L225 Difference]: With dead ends: 14227 [2020-10-14 04:20:23,244 INFO L226 Difference]: Without dead ends: 8537 [2020-10-14 04:20:23,259 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:20:23,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8537 states. [2020-10-14 04:20:23,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8537 to 8533. [2020-10-14 04:20:23,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8533 states. [2020-10-14 04:20:23,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8533 states to 8533 states and 10601 transitions. [2020-10-14 04:20:23,479 INFO L78 Accepts]: Start accepts. Automaton has 8533 states and 10601 transitions. Word has length 150 [2020-10-14 04:20:23,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:20:23,480 INFO L479 AbstractCegarLoop]: Abstraction has 8533 states and 10601 transitions. [2020-10-14 04:20:23,480 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:20:23,480 INFO L276 IsEmpty]: Start isEmpty. Operand 8533 states and 10601 transitions. [2020-10-14 04:20:23,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-14 04:20:23,483 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:20:23,483 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:20:23,483 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 04:20:23,484 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:20:23,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:20:23,484 INFO L82 PathProgramCache]: Analyzing trace with hash -94359028, now seen corresponding path program 1 times [2020-10-14 04:20:23,484 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:20:23,485 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2007901717] [2020-10-14 04:20:23,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:20:23,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:20:23,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:23,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:24,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:20:24,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-14 04:20:24,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:20:24,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 674 [2020-10-14 04:20:24,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:20:24,189 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:20:24,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:20:24,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 100 [2020-10-14 04:20:24,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-14 04:20:24,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:20:24,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:20:24,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:20:24,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:24,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:20:24,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:20:24,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:20:24,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:20:24,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:20:24,295 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:20:24,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:20:24,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:20:24,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:20:24,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:20:24,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:20:24,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:20:24,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:24,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:20:24,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-14 04:20:24,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:20:24,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-14 04:20:24,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:20:24,421 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:20:24,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:20:24,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:20:24,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-14 04:20:24,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-14 04:20:24,572 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 54 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:20:24,573 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2007901717] [2020-10-14 04:20:24,573 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:20:24,574 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:20:24,574 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401820451] [2020-10-14 04:20:24,575 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:20:24,575 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:20:24,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:20:24,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:20:24,576 INFO L87 Difference]: Start difference. First operand 8533 states and 10601 transitions. Second operand 5 states. [2020-10-14 04:20:33,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:20:33,557 INFO L93 Difference]: Finished difference Result 18481 states and 23666 transitions. [2020-10-14 04:20:33,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:20:33,558 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 152 [2020-10-14 04:20:33,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:20:33,598 INFO L225 Difference]: With dead ends: 18481 [2020-10-14 04:20:33,599 INFO L226 Difference]: Without dead ends: 9954 [2020-10-14 04:20:33,619 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:20:33,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9954 states. [2020-10-14 04:20:33,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9954 to 9950. [2020-10-14 04:20:33,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9950 states. [2020-10-14 04:20:33,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9950 states to 9950 states and 12262 transitions. [2020-10-14 04:20:33,852 INFO L78 Accepts]: Start accepts. Automaton has 9950 states and 12262 transitions. Word has length 152 [2020-10-14 04:20:33,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:20:33,853 INFO L479 AbstractCegarLoop]: Abstraction has 9950 states and 12262 transitions. [2020-10-14 04:20:33,853 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:20:33,854 INFO L276 IsEmpty]: Start isEmpty. Operand 9950 states and 12262 transitions. [2020-10-14 04:20:33,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-10-14 04:20:33,857 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:20:33,857 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:20:33,858 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 04:20:33,858 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:20:33,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:20:33,858 INFO L82 PathProgramCache]: Analyzing trace with hash 1296550529, now seen corresponding path program 1 times [2020-10-14 04:20:33,858 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:20:33,859 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1179786544] [2020-10-14 04:20:33,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:20:33,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:20:33,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:33,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:34,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:34,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:20:34,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-14 04:20:34,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:20:34,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1103 [2020-10-14 04:20:34,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:20:34,991 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:20:34,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:20:34,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-14 04:20:34,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-14 04:20:34,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:20:35,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:20:35,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:20:35,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:35,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:20:35,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:20:35,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:20:35,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:20:35,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:20:35,061 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:20:35,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:20:35,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:20:35,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:20:35,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:20:35,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:20:35,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:20:35,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:35,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:20:35,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-14 04:20:35,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:20:35,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-14 04:20:35,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:20:35,160 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:20:35,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:20:35,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:20:35,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-14 04:20:35,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:20:35,215 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 54 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:20:35,215 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1179786544] [2020-10-14 04:20:35,216 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:20:35,217 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:20:35,217 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292686397] [2020-10-14 04:20:35,218 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:20:35,218 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:20:35,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:20:35,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:20:35,219 INFO L87 Difference]: Start difference. First operand 9950 states and 12262 transitions. Second operand 5 states. [2020-10-14 04:20:43,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:20:43,323 INFO L93 Difference]: Finished difference Result 22738 states and 28905 transitions. [2020-10-14 04:20:43,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:20:43,327 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 157 [2020-10-14 04:20:43,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:20:43,384 INFO L225 Difference]: With dead ends: 22738 [2020-10-14 04:20:43,384 INFO L226 Difference]: Without dead ends: 12794 [2020-10-14 04:20:43,405 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:20:43,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12794 states. [2020-10-14 04:20:43,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12794 to 12790. [2020-10-14 04:20:43,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12790 states. [2020-10-14 04:20:43,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12790 states to 12790 states and 15571 transitions. [2020-10-14 04:20:43,648 INFO L78 Accepts]: Start accepts. Automaton has 12790 states and 15571 transitions. Word has length 157 [2020-10-14 04:20:43,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:20:43,649 INFO L479 AbstractCegarLoop]: Abstraction has 12790 states and 15571 transitions. [2020-10-14 04:20:43,649 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:20:43,649 INFO L276 IsEmpty]: Start isEmpty. Operand 12790 states and 15571 transitions. [2020-10-14 04:20:43,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-10-14 04:20:43,655 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:20:43,655 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:20:43,655 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 04:20:43,656 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:20:43,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:20:43,656 INFO L82 PathProgramCache]: Analyzing trace with hash -639360172, now seen corresponding path program 1 times [2020-10-14 04:20:43,656 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:20:43,657 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [334698684] [2020-10-14 04:20:43,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:20:43,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:20:43,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:43,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:44,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:45,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:20:45,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 222 [2020-10-14 04:20:45,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:20:45,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1447 [2020-10-14 04:20:45,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:20:45,142 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:20:45,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:20:45,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 160 [2020-10-14 04:20:45,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-14 04:20:45,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:20:45,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:20:45,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:20:45,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:45,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:20:45,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:20:45,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:20:45,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:20:45,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:20:45,230 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:20:45,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:20:45,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:20:45,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:20:45,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:20:45,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:20:45,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:20:45,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:45,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:20:45,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-14 04:20:45,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:20:45,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-14 04:20:45,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:20:45,394 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:20:45,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:20:45,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:20:45,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 145 [2020-10-14 04:20:45,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:20:45,499 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 54 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:20:45,500 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [334698684] [2020-10-14 04:20:45,500 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:20:45,500 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:20:45,501 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373958178] [2020-10-14 04:20:45,502 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:20:45,502 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:20:45,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:20:45,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:20:45,503 INFO L87 Difference]: Start difference. First operand 12790 states and 15571 transitions. Second operand 5 states. [2020-10-14 04:20:54,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:20:54,766 INFO L93 Difference]: Finished difference Result 31966 states and 39877 transitions. [2020-10-14 04:20:54,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:20:54,767 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 212 [2020-10-14 04:20:54,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:20:54,825 INFO L225 Difference]: With dead ends: 31966 [2020-10-14 04:20:54,826 INFO L226 Difference]: Without dead ends: 19182 [2020-10-14 04:20:54,853 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:20:54,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19182 states. [2020-10-14 04:20:55,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19182 to 19174. [2020-10-14 04:20:55,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19174 states. [2020-10-14 04:20:55,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19174 states to 19174 states and 23089 transitions. [2020-10-14 04:20:55,201 INFO L78 Accepts]: Start accepts. Automaton has 19174 states and 23089 transitions. Word has length 212 [2020-10-14 04:20:55,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:20:55,202 INFO L479 AbstractCegarLoop]: Abstraction has 19174 states and 23089 transitions. [2020-10-14 04:20:55,202 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:20:55,202 INFO L276 IsEmpty]: Start isEmpty. Operand 19174 states and 23089 transitions. [2020-10-14 04:20:55,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2020-10-14 04:20:55,210 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:20:55,210 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:20:55,211 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 04:20:55,211 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:20:55,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:20:55,211 INFO L82 PathProgramCache]: Analyzing trace with hash 1134912638, now seen corresponding path program 1 times [2020-10-14 04:20:55,212 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:20:55,212 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [478715298] [2020-10-14 04:20:55,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:20:55,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:20:55,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:55,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:56,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:20:56,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 235 [2020-10-14 04:20:56,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:20:56,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1045 [2020-10-14 04:20:56,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:20:56,290 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:20:56,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:20:56,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 173 [2020-10-14 04:20:56,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-14 04:20:56,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:20:56,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:20:56,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:20:56,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:56,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:20:56,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:20:56,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:20:56,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:20:56,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:20:56,370 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:20:56,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:20:56,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:20:56,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:20:56,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:20:56,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:20:56,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:20:56,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:56,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:20:56,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-14 04:20:56,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:20:56,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 04:20:56,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:20:56,411 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:20:56,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:20:56,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:20:56,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:20:56,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:20:56,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-14 04:20:56,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:20:56,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:56,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:20:56,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 04:20:56,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:20:56,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-14 04:20:56,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:20:56,477 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:20:56,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:20:56,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:20:56,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-14 04:20:56,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:20:56,538 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 111 proven. 2 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2020-10-14 04:20:56,538 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [478715298] [2020-10-14 04:20:56,539 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:20:56,539 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:20:56,539 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666251671] [2020-10-14 04:20:56,540 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:20:56,540 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:20:56,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:20:56,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:20:56,541 INFO L87 Difference]: Start difference. First operand 19174 states and 23089 transitions. Second operand 5 states. [2020-10-14 04:21:17,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:21:17,544 INFO L93 Difference]: Finished difference Result 51786 states and 63387 transitions. [2020-10-14 04:21:17,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:21:17,545 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 223 [2020-10-14 04:21:17,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:21:17,681 INFO L225 Difference]: With dead ends: 51786 [2020-10-14 04:21:17,681 INFO L226 Difference]: Without dead ends: 32618 [2020-10-14 04:21:17,720 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:21:17,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32618 states. [2020-10-14 04:21:19,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32618 to 32610. [2020-10-14 04:21:19,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32610 states. [2020-10-14 04:21:19,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32610 states to 32610 states and 38128 transitions. [2020-10-14 04:21:19,097 INFO L78 Accepts]: Start accepts. Automaton has 32610 states and 38128 transitions. Word has length 223 [2020-10-14 04:21:19,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:21:19,097 INFO L479 AbstractCegarLoop]: Abstraction has 32610 states and 38128 transitions. [2020-10-14 04:21:19,097 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:21:19,097 INFO L276 IsEmpty]: Start isEmpty. Operand 32610 states and 38128 transitions. [2020-10-14 04:21:19,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2020-10-14 04:21:19,107 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:21:19,108 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:21:19,108 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 04:21:19,108 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:21:19,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:21:19,109 INFO L82 PathProgramCache]: Analyzing trace with hash -1577377989, now seen corresponding path program 1 times [2020-10-14 04:21:19,109 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:21:19,109 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1388146800] [2020-10-14 04:21:19,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:21:19,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:21:19,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:21:19,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:21:19,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:21:19,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:21:21,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:21:23,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:21:23,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 256 [2020-10-14 04:21:23,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 04:21:23,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4372 [2020-10-14 04:21:23,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:21:23,509 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:21:23,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:21:23,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 98 [2020-10-14 04:21:23,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-14 04:21:23,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:21:23,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:21:23,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:21:23,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:21:23,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:21:23,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:21:23,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:21:23,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:21:23,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:21:23,606 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:21:23,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:21:23,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:21:23,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:21:23,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:21:23,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:21:23,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:21:23,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:21:23,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:21:23,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-14 04:21:23,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:21:23,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-14 04:21:23,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:21:23,728 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:21:23,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:21:23,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:21:23,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-14 04:21:23,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:21:23,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-10-14 04:21:23,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:21:23,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:21:23,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:21:23,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-14 04:21:23,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:21:23,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-14 04:21:23,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:21:23,913 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:21:23,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:21:23,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:21:23,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-14 04:21:23,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:21:24,174 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 195 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 04:21:24,179 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1388146800] [2020-10-14 04:21:24,179 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:21:24,180 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:21:24,180 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197565295] [2020-10-14 04:21:24,181 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:21:24,181 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:21:24,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:21:24,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:21:24,182 INFO L87 Difference]: Start difference. First operand 32610 states and 38128 transitions. Second operand 7 states. [2020-10-14 04:21:34,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:21:34,816 INFO L93 Difference]: Finished difference Result 75311 states and 90123 transitions. [2020-10-14 04:21:34,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 04:21:34,817 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 244 [2020-10-14 04:21:34,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:21:34,919 INFO L225 Difference]: With dead ends: 75311 [2020-10-14 04:21:34,920 INFO L226 Difference]: Without dead ends: 36311 [2020-10-14 04:21:34,975 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:21:35,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36311 states. [2020-10-14 04:21:35,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36311 to 36283. [2020-10-14 04:21:35,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36283 states. [2020-10-14 04:21:35,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36283 states to 36283 states and 39667 transitions. [2020-10-14 04:21:35,510 INFO L78 Accepts]: Start accepts. Automaton has 36283 states and 39667 transitions. Word has length 244 [2020-10-14 04:21:35,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:21:35,511 INFO L479 AbstractCegarLoop]: Abstraction has 36283 states and 39667 transitions. [2020-10-14 04:21:35,511 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:21:35,511 INFO L276 IsEmpty]: Start isEmpty. Operand 36283 states and 39667 transitions. [2020-10-14 04:21:35,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2020-10-14 04:21:35,517 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:21:35,518 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:21:35,518 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 04:21:35,518 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:21:35,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:21:35,519 INFO L82 PathProgramCache]: Analyzing trace with hash 1686847963, now seen corresponding path program 1 times [2020-10-14 04:21:35,519 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:21:35,520 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [17237461] [2020-10-14 04:21:35,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:21:35,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:21:35,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:21:35,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:21:36,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:21:38,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:21:38,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 272 [2020-10-14 04:21:38,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:21:38,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2770 [2020-10-14 04:21:38,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:21:38,326 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:21:38,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:21:38,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 100 [2020-10-14 04:21:38,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-14 04:21:38,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:21:38,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:21:38,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:21:38,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:21:38,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:21:38,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:21:38,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:21:38,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:21:38,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:21:38,410 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:21:38,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:21:38,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:21:38,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:21:38,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:21:38,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:21:38,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:21:38,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:21:38,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:21:38,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-14 04:21:38,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:21:38,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-14 04:21:38,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:21:38,498 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:21:38,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:21:38,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:21:38,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-14 04:21:38,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:21:38,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-14 04:21:38,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:21:38,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:21:38,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:21:38,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-14 04:21:38,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:21:38,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-14 04:21:38,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:21:38,671 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:21:38,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:21:38,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:21:38,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-14 04:21:38,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:21:38,825 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 197 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 04:21:38,826 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [17237461] [2020-10-14 04:21:38,826 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:21:38,827 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:21:38,827 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193382604] [2020-10-14 04:21:38,828 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:21:38,828 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:21:38,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:21:38,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:21:38,829 INFO L87 Difference]: Start difference. First operand 36283 states and 39667 transitions. Second operand 7 states. [2020-10-14 04:21:49,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:21:49,934 INFO L93 Difference]: Finished difference Result 91310 states and 101156 transitions. [2020-10-14 04:21:49,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 04:21:49,935 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 260 [2020-10-14 04:21:49,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:21:50,082 INFO L225 Difference]: With dead ends: 91310 [2020-10-14 04:21:50,083 INFO L226 Difference]: Without dead ends: 55033 [2020-10-14 04:21:50,136 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:21:50,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55033 states. [2020-10-14 04:21:50,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55033 to 54301. [2020-10-14 04:21:50,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54301 states. [2020-10-14 04:21:50,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54301 states to 54301 states and 59734 transitions. [2020-10-14 04:21:50,734 INFO L78 Accepts]: Start accepts. Automaton has 54301 states and 59734 transitions. Word has length 260 [2020-10-14 04:21:50,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:21:50,735 INFO L479 AbstractCegarLoop]: Abstraction has 54301 states and 59734 transitions. [2020-10-14 04:21:50,735 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:21:50,735 INFO L276 IsEmpty]: Start isEmpty. Operand 54301 states and 59734 transitions. [2020-10-14 04:21:50,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2020-10-14 04:21:50,747 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:21:50,748 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:21:50,748 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 04:21:50,748 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:21:50,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:21:50,749 INFO L82 PathProgramCache]: Analyzing trace with hash 320532929, now seen corresponding path program 1 times [2020-10-14 04:21:50,749 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:21:50,749 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [337300968] [2020-10-14 04:21:50,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:21:50,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:21:50,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:21:50,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:21:50,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:21:53,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:21:55,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:21:55,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 371 [2020-10-14 04:21:55,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 04:21:55,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 04:21:55,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:21:55,785 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:21:55,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:21:55,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-14 04:21:55,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-14 04:21:55,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:21:55,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:21:55,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:21:55,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:21:55,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:21:55,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:21:55,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:21:55,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:21:55,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:21:55,859 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:21:55,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:21:55,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:21:55,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:21:55,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:21:55,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:21:55,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:21:55,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:21:55,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:21:55,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-14 04:21:55,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:21:55,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-14 04:21:55,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:21:55,922 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:21:55,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:21:55,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:21:55,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-14 04:21:55,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:21:55,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-14 04:21:55,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:21:55,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:21:56,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:21:56,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 04:21:56,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:21:56,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-14 04:21:56,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:21:56,036 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:21:56,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:21:56,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:21:56,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-14 04:21:56,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:21:56,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2020-10-14 04:21:56,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:21:56,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:21:56,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:21:56,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-14 04:21:56,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:21:56,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-14 04:21:56,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:21:56,189 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:21:56,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:21:56,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 106 [2020-10-14 04:21:56,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:21:56,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:21:56,301 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 242 proven. 107 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2020-10-14 04:21:56,301 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [337300968] [2020-10-14 04:21:56,301 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:21:56,301 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:21:56,302 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548364056] [2020-10-14 04:21:56,302 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:21:56,302 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:21:56,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:21:56,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:21:56,303 INFO L87 Difference]: Start difference. First operand 54301 states and 59734 transitions. Second operand 7 states. [2020-10-14 04:22:09,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:22:09,119 INFO L93 Difference]: Finished difference Result 124103 states and 141258 transitions. [2020-10-14 04:22:09,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 04:22:09,121 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 357 [2020-10-14 04:22:09,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:22:09,337 INFO L225 Difference]: With dead ends: 124103 [2020-10-14 04:22:09,337 INFO L226 Difference]: Without dead ends: 69808 [2020-10-14 04:22:09,423 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:22:09,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69808 states. [2020-10-14 04:22:10,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69808 to 69408. [2020-10-14 04:22:10,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69408 states. [2020-10-14 04:22:10,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69408 states to 69408 states and 76273 transitions. [2020-10-14 04:22:10,797 INFO L78 Accepts]: Start accepts. Automaton has 69408 states and 76273 transitions. Word has length 357 [2020-10-14 04:22:10,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:22:10,797 INFO L479 AbstractCegarLoop]: Abstraction has 69408 states and 76273 transitions. [2020-10-14 04:22:10,798 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:22:10,798 INFO L276 IsEmpty]: Start isEmpty. Operand 69408 states and 76273 transitions. [2020-10-14 04:22:10,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 394 [2020-10-14 04:22:10,807 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:22:10,807 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:22:10,807 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 04:22:10,808 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:22:10,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:22:10,808 INFO L82 PathProgramCache]: Analyzing trace with hash -547299878, now seen corresponding path program 1 times [2020-10-14 04:22:10,808 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:22:10,809 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [160676951] [2020-10-14 04:22:10,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:22:10,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:22:10,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:22:10,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:22:10,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:22:13,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:22:14,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:22:15,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:22:15,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 409 [2020-10-14 04:22:15,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 04:22:15,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-14 04:22:15,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:22:15,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:22:15,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:22:15,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 251 [2020-10-14 04:22:15,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-14 04:22:15,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:22:15,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:22:15,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:22:15,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:22:15,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:22:15,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:22:15,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:22:15,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:22:15,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:22:15,956 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:22:15,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:22:15,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:22:15,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:22:15,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:22:15,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:22:15,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:22:15,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:22:16,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:22:16,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-14 04:22:16,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:22:16,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 04:22:16,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:22:16,003 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:22:16,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:22:16,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:22:16,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:22:16,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:22:16,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-14 04:22:16,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:22:16,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:22:16,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:22:16,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-14 04:22:16,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:22:16,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 04:22:16,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:22:16,050 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:22:16,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:22:16,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:22:16,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:22:16,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:22:16,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2020-10-14 04:22:16,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:22:16,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:22:16,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:22:16,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 04:22:16,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:22:16,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-14 04:22:16,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:22:16,114 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:22:16,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:22:16,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:22:16,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-14 04:22:16,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:22:16,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2020-10-14 04:22:16,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:22:16,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:22:16,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:22:16,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-14 04:22:16,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:22:16,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-14 04:22:16,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:22:16,265 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:22:16,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:22:16,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:22:16,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-14 04:22:16,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:22:16,389 INFO L134 CoverageAnalysis]: Checked inductivity of 675 backedges. 458 proven. 2 refuted. 0 times theorem prover too weak. 215 trivial. 0 not checked. [2020-10-14 04:22:16,389 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [160676951] [2020-10-14 04:22:16,389 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:22:16,389 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:22:16,390 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859907612] [2020-10-14 04:22:16,390 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:22:16,390 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:22:16,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:22:16,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:22:16,391 INFO L87 Difference]: Start difference. First operand 69408 states and 76273 transitions. Second operand 7 states. [2020-10-14 04:22:31,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:22:31,445 INFO L93 Difference]: Finished difference Result 140285 states and 154246 transitions. [2020-10-14 04:22:31,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 04:22:31,446 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 393 [2020-10-14 04:22:31,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:22:31,573 INFO L225 Difference]: With dead ends: 140285 [2020-10-14 04:22:31,573 INFO L226 Difference]: Without dead ends: 67339 [2020-10-14 04:22:31,646 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:22:31,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67339 states. [2020-10-14 04:22:34,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67339 to 63795. [2020-10-14 04:22:34,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63795 states. [2020-10-14 04:22:34,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63795 states to 63795 states and 68366 transitions. [2020-10-14 04:22:34,095 INFO L78 Accepts]: Start accepts. Automaton has 63795 states and 68366 transitions. Word has length 393 [2020-10-14 04:22:34,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:22:34,096 INFO L479 AbstractCegarLoop]: Abstraction has 63795 states and 68366 transitions. [2020-10-14 04:22:34,096 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:22:34,096 INFO L276 IsEmpty]: Start isEmpty. Operand 63795 states and 68366 transitions. [2020-10-14 04:22:34,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2020-10-14 04:22:34,106 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:22:34,106 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:22:34,107 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 04:22:34,107 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:22:34,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:22:34,107 INFO L82 PathProgramCache]: Analyzing trace with hash 1788890440, now seen corresponding path program 1 times [2020-10-14 04:22:34,107 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:22:34,108 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [226367517] [2020-10-14 04:22:34,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:22:34,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:22:34,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:22:34,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:22:35,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:22:37,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:22:37,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 438 [2020-10-14 04:22:37,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:22:37,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3254 [2020-10-14 04:22:37,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:22:37,409 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:22:37,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:22:37,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 266 [2020-10-14 04:22:37,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-14 04:22:37,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:22:37,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:22:37,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:22:37,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:22:37,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:22:37,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:22:37,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:22:37,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:22:37,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:22:37,521 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:22:37,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:22:37,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:22:37,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:22:37,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:22:37,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:22:37,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:22:37,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:22:37,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:22:37,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-14 04:22:37,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:22:37,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-14 04:22:37,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:22:37,586 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:22:37,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:22:37,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:22:37,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:22:37,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:22:37,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-10-14 04:22:37,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:22:37,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:22:37,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:22:37,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 04:22:37,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:22:37,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-14 04:22:37,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:22:37,679 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:22:37,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:22:37,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:22:37,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-14 04:22:37,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:22:37,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2020-10-14 04:22:37,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:22:37,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:22:37,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:22:37,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-14 04:22:37,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:22:37,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-14 04:22:37,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:22:37,802 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:22:37,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:22:37,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:22:37,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-14 04:22:37,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:22:37,998 INFO L134 CoverageAnalysis]: Checked inductivity of 492 backedges. 380 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-14 04:22:37,998 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [226367517] [2020-10-14 04:22:37,998 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:22:37,999 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 04:22:37,999 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230294553] [2020-10-14 04:22:37,999 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 04:22:38,000 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:22:38,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 04:22:38,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 04:22:38,000 INFO L87 Difference]: Start difference. First operand 63795 states and 68366 transitions. Second operand 8 states. [2020-10-14 04:22:55,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:22:55,864 INFO L93 Difference]: Finished difference Result 137208 states and 149978 transitions. [2020-10-14 04:22:55,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 04:22:55,866 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 424 [2020-10-14 04:22:55,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:22:56,002 INFO L225 Difference]: With dead ends: 137208 [2020-10-14 04:22:56,002 INFO L226 Difference]: Without dead ends: 73419 [2020-10-14 04:22:56,064 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-10-14 04:22:56,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73419 states. [2020-10-14 04:22:56,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73419 to 72277. [2020-10-14 04:22:56,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72277 states. [2020-10-14 04:22:56,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72277 states to 72277 states and 77010 transitions. [2020-10-14 04:22:56,995 INFO L78 Accepts]: Start accepts. Automaton has 72277 states and 77010 transitions. Word has length 424 [2020-10-14 04:22:56,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:22:56,996 INFO L479 AbstractCegarLoop]: Abstraction has 72277 states and 77010 transitions. [2020-10-14 04:22:56,996 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 04:22:56,997 INFO L276 IsEmpty]: Start isEmpty. Operand 72277 states and 77010 transitions. [2020-10-14 04:22:57,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 561 [2020-10-14 04:22:57,023 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:22:57,023 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:22:57,024 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 04:22:57,024 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:22:57,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:22:57,024 INFO L82 PathProgramCache]: Analyzing trace with hash 1491362942, now seen corresponding path program 1 times [2020-10-14 04:22:57,025 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:22:57,025 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [713097926] [2020-10-14 04:22:57,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:22:57,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:22:57,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:22:57,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:22:57,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:22:59,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:23:03,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:23:03,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 576 [2020-10-14 04:23:03,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 04:23:03,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6265 [2020-10-14 04:23:03,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:23:03,354 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:23:03,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:23:03,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 132 [2020-10-14 04:23:03,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-14 04:23:03,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:23:03,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:23:03,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:23:03,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:23:03,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:23:03,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:23:03,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:23:03,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:23:03,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:23:03,419 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:23:03,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:23:03,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:23:03,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:23:03,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:23:03,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:23:03,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:23:03,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:23:03,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:23:03,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-14 04:23:03,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:23:03,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-14 04:23:03,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:23:03,501 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:23:03,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:23:03,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:23:03,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-14 04:23:03,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:23:03,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-14 04:23:03,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:23:03,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:23:03,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:23:03,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-14 04:23:03,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:23:03,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-14 04:23:03,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:23:03,591 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:23:03,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:23:03,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:23:03,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 04:23:03,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:23:03,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2020-10-14 04:23:03,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:23:03,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:23:03,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:23:03,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 298 [2020-10-14 04:23:03,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:23:03,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-14 04:23:03,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:23:03,756 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:23:03,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:23:03,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 295 [2020-10-14 04:23:03,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:23:03,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:23:03,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 04:23:03,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:23:03,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:23:03,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:23:03,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 04:23:03,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:23:03,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:23:03,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:23:03,802 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:23:03,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:23:03,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:23:03,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:23:03,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:23:03,948 INFO L134 CoverageAnalysis]: Checked inductivity of 449 backedges. 247 proven. 80 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2020-10-14 04:23:03,949 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [713097926] [2020-10-14 04:23:03,949 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:23:03,949 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:23:03,949 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55620369] [2020-10-14 04:23:03,950 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:23:03,950 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:23:03,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:23:03,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:23:03,951 INFO L87 Difference]: Start difference. First operand 72277 states and 77010 transitions. Second operand 7 states.