/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label06.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 21:06:43,465 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 21:06:43,467 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 21:06:43,502 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 21:06:43,502 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 21:06:43,510 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 21:06:43,512 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 21:06:43,516 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 21:06:43,518 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 21:06:43,519 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 21:06:43,520 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 21:06:43,522 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 21:06:43,523 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 21:06:43,526 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 21:06:43,530 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 21:06:43,532 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 21:06:43,533 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 21:06:43,534 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 21:06:43,536 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 21:06:43,544 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 21:06:43,546 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 21:06:43,547 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 21:06:43,548 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 21:06:43,548 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 21:06:43,561 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 21:06:43,561 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 21:06:43,561 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 21:06:43,562 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 21:06:43,562 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 21:06:43,566 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 21:06:43,567 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 21:06:43,567 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 21:06:43,571 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 21:06:43,572 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 21:06:43,577 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 21:06:43,577 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 21:06:43,578 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 21:06:43,578 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 21:06:43,578 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 21:06:43,579 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 21:06:43,581 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 21:06:43,582 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 21:06:43,611 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 21:06:43,612 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 21:06:43,613 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 21:06:43,613 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 21:06:43,613 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 21:06:43,614 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 21:06:43,614 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 21:06:43,614 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 21:06:43,614 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 21:06:43,614 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 21:06:43,615 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 21:06:43,615 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 21:06:43,615 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 21:06:43,615 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 21:06:43,615 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 21:06:43,615 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 21:06:43,616 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 21:06:43,616 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 21:06:43,616 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 21:06:43,616 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 21:06:43,616 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 21:06:43,617 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 21:06:43,617 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 21:06:43,617 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 21:06:43,617 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 21:06:43,618 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 21:06:43,618 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 21:06:43,618 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 21:06:43,618 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 21:06:43,618 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 21:06:43,938 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 21:06:43,952 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 21:06:43,955 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 21:06:43,957 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 21:06:43,957 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 21:06:43,958 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label06.c [2020-10-14 21:06:44,037 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/66e46bf98/838e7e6e115b4e6b9ba2c46e5086389f/FLAGeccc7eeba [2020-10-14 21:06:44,855 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 21:06:44,856 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label06.c [2020-10-14 21:06:44,900 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/66e46bf98/838e7e6e115b4e6b9ba2c46e5086389f/FLAGeccc7eeba [2020-10-14 21:06:45,362 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/66e46bf98/838e7e6e115b4e6b9ba2c46e5086389f [2020-10-14 21:06:45,371 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 21:06:45,373 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 21:06:45,374 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 21:06:45,374 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 21:06:45,378 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 21:06:45,379 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:06:45" (1/1) ... [2020-10-14 21:06:45,382 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12925ca7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:06:45, skipping insertion in model container [2020-10-14 21:06:45,383 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:06:45" (1/1) ... [2020-10-14 21:06:45,391 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 21:06:45,530 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 21:06:47,041 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 21:06:47,050 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 21:06:47,655 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 21:06:47,682 INFO L208 MainTranslator]: Completed translation [2020-10-14 21:06:47,683 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:06:47 WrapperNode [2020-10-14 21:06:47,683 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 21:06:47,684 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 21:06:47,684 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 21:06:47,684 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 21:06:47,699 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:06:47" (1/1) ... [2020-10-14 21:06:47,699 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:06:47" (1/1) ... [2020-10-14 21:06:47,761 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:06:47" (1/1) ... [2020-10-14 21:06:47,761 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:06:47" (1/1) ... [2020-10-14 21:06:47,853 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:06:47" (1/1) ... [2020-10-14 21:06:47,887 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:06:47" (1/1) ... [2020-10-14 21:06:47,909 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:06:47" (1/1) ... [2020-10-14 21:06:47,947 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 21:06:47,948 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 21:06:47,948 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 21:06:47,949 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 21:06:47,950 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:06:47" (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 21:06:48,022 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 21:06:48,022 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 21:06:48,022 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 21:06:48,022 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 21:06:48,023 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 21:06:48,023 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 21:06:48,023 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 21:06:48,023 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 21:06:48,023 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 21:06:48,023 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 21:06:48,024 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 21:06:48,024 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 21:06:48,024 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 21:06:48,024 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 21:06:48,024 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 21:06:48,025 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 21:06:48,025 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 21:06:52,909 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 21:06:52,909 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 21:06:52,926 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:06:52 BoogieIcfgContainer [2020-10-14 21:06:52,926 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 21:06:52,929 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 21:06:52,930 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 21:06:52,933 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 21:06:52,933 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 09:06:45" (1/3) ... [2020-10-14 21:06:52,935 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8892b94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:06:52, skipping insertion in model container [2020-10-14 21:06:52,936 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:06:47" (2/3) ... [2020-10-14 21:06:52,936 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8892b94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:06:52, skipping insertion in model container [2020-10-14 21:06:52,937 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:06:52" (3/3) ... [2020-10-14 21:06:52,939 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem12_label06.c [2020-10-14 21:06:52,949 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 21:06:52,958 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 21:06:52,970 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 21:06:52,997 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 21:06:52,997 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 21:06:52,997 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 21:06:52,997 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 21:06:52,998 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 21:06:52,998 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 21:06:52,998 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 21:06:52,998 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 21:06:53,032 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states. [2020-10-14 21:06:53,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-14 21:06:53,039 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:06:53,040 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] [2020-10-14 21:06:53,041 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:06:53,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:06:53,047 INFO L82 PathProgramCache]: Analyzing trace with hash 1616401258, now seen corresponding path program 1 times [2020-10-14 21:06:53,056 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:06:53,057 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1968796897] [2020-10-14 21:06:53,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:06:53,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:06:53,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:06:53,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:06:53,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-14 21:06:53,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:06:53,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 346 [2020-10-14 21:06:53,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:06:53,562 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:06:53,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:06:53,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:06:53,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-14 21:06:53,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 21:06:53,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:06:53,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:06:53,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:06:53,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:06:53,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:06:53,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:06:53,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 21:06:53,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:06:53,679 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:06:53,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:06:53,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:06:53,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:06:53,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:06:53,695 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 21:06:53,696 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1968796897] [2020-10-14 21:06:53,698 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:06:53,699 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 21:06:53,700 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297609226] [2020-10-14 21:06:53,705 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 21:06:53,705 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:06:53,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 21:06:53,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 21:06:53,723 INFO L87 Difference]: Start difference. First operand 839 states. Second operand 4 states. [2020-10-14 21:07:01,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:07:01,890 INFO L93 Difference]: Finished difference Result 2471 states and 4735 transitions. [2020-10-14 21:07:01,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 21:07:01,892 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2020-10-14 21:07:01,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:07:01,922 INFO L225 Difference]: With dead ends: 2471 [2020-10-14 21:07:01,922 INFO L226 Difference]: Without dead ends: 1568 [2020-10-14 21:07:01,935 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 21:07:01,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1568 states. [2020-10-14 21:07:02,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1568 to 1555. [2020-10-14 21:07:02,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1555 states. [2020-10-14 21:07:02,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1555 states to 1555 states and 2403 transitions. [2020-10-14 21:07:02,092 INFO L78 Accepts]: Start accepts. Automaton has 1555 states and 2403 transitions. Word has length 29 [2020-10-14 21:07:02,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:07:02,093 INFO L479 AbstractCegarLoop]: Abstraction has 1555 states and 2403 transitions. [2020-10-14 21:07:02,093 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 21:07:02,094 INFO L276 IsEmpty]: Start isEmpty. Operand 1555 states and 2403 transitions. [2020-10-14 21:07:02,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-14 21:07:02,099 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:07:02,099 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:07:02,100 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 21:07:02,100 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:07:02,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:07:02,100 INFO L82 PathProgramCache]: Analyzing trace with hash -428207165, now seen corresponding path program 1 times [2020-10-14 21:07:02,101 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:07:02,101 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1104029562] [2020-10-14 21:07:02,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:07:02,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:07:02,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:02,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:02,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:07:02,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-14 21:07:02,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:07:02,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 668 [2020-10-14 21:07:02,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:07:02,815 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:07:02,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 21:07:02,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:07:02,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-14 21:07:02,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 21:07:02,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:07:02,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:07:02,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:02,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:07:02,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:07:02,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:07:02,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 21:07:02,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:07:02,905 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:07:02,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:07:02,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:07:02,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:07:02,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:07:02,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:07:02,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:07:02,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:03,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:07:03,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 21:07:03,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:07:03,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-14 21:07:03,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:07:03,064 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:07:03,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:07:03,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:07:03,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 21:07:03,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:07:03,282 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 18 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 21:07:03,283 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1104029562] [2020-10-14 21:07:03,283 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:07:03,284 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 21:07:03,284 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319729264] [2020-10-14 21:07:03,286 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 21:07:03,286 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:07:03,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 21:07:03,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 21:07:03,287 INFO L87 Difference]: Start difference. First operand 1555 states and 2403 transitions. Second operand 6 states. [2020-10-14 21:07:12,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:07:12,731 INFO L93 Difference]: Finished difference Result 4692 states and 7286 transitions. [2020-10-14 21:07:12,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 21:07:12,733 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 104 [2020-10-14 21:07:12,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:07:12,753 INFO L225 Difference]: With dead ends: 4692 [2020-10-14 21:07:12,753 INFO L226 Difference]: Without dead ends: 3143 [2020-10-14 21:07:12,758 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:07:12,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3143 states. [2020-10-14 21:07:12,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3143 to 3127. [2020-10-14 21:07:12,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3127 states. [2020-10-14 21:07:12,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3127 states to 3127 states and 4276 transitions. [2020-10-14 21:07:12,849 INFO L78 Accepts]: Start accepts. Automaton has 3127 states and 4276 transitions. Word has length 104 [2020-10-14 21:07:12,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:07:12,850 INFO L479 AbstractCegarLoop]: Abstraction has 3127 states and 4276 transitions. [2020-10-14 21:07:12,850 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 21:07:12,850 INFO L276 IsEmpty]: Start isEmpty. Operand 3127 states and 4276 transitions. [2020-10-14 21:07:12,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-14 21:07:12,854 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:07:12,854 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:07:12,854 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 21:07:12,855 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:07:12,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:07:12,855 INFO L82 PathProgramCache]: Analyzing trace with hash 1110021871, now seen corresponding path program 1 times [2020-10-14 21:07:12,855 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:07:12,856 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2048568117] [2020-10-14 21:07:12,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:07:12,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:07:12,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:13,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:14,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:07:14,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-14 21:07:14,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:07:14,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1448 [2020-10-14 21:07:14,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:07:14,348 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:07:14,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:07:14,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:07:14,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-14 21:07:14,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:07:14,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:07:14,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:07:14,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:14,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:07:14,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:07:14,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:07:14,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 21:07:14,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:07:14,422 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:07:14,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:07:14,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:07:14,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:07:14,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:07:14,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:07:14,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:07:14,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:14,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:07:14,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-14 21:07:14,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:07:14,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 219 [2020-10-14 21:07:14,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:07:14,727 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:07:14,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:07:14,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:07:14,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 21:07:14,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:07:14,873 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:07:14,874 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2048568117] [2020-10-14 21:07:14,874 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:07:14,874 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 21:07:14,875 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317252341] [2020-10-14 21:07:14,875 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:07:14,876 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:07:14,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:07:14,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:07:14,877 INFO L87 Difference]: Start difference. First operand 3127 states and 4276 transitions. Second operand 7 states. [2020-10-14 21:07:27,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:07:27,768 INFO L93 Difference]: Finished difference Result 9530 states and 13217 transitions. [2020-10-14 21:07:27,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 21:07:27,770 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 110 [2020-10-14 21:07:27,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:07:27,801 INFO L225 Difference]: With dead ends: 9530 [2020-10-14 21:07:27,802 INFO L226 Difference]: Without dead ends: 6409 [2020-10-14 21:07:27,808 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 21:07:27,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6409 states. [2020-10-14 21:07:27,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6409 to 6371. [2020-10-14 21:07:27,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6371 states. [2020-10-14 21:07:27,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6371 states to 6371 states and 8489 transitions. [2020-10-14 21:07:27,990 INFO L78 Accepts]: Start accepts. Automaton has 6371 states and 8489 transitions. Word has length 110 [2020-10-14 21:07:27,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:07:27,991 INFO L479 AbstractCegarLoop]: Abstraction has 6371 states and 8489 transitions. [2020-10-14 21:07:27,991 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:07:27,991 INFO L276 IsEmpty]: Start isEmpty. Operand 6371 states and 8489 transitions. [2020-10-14 21:07:27,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-14 21:07:27,993 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:07:27,994 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:07:27,994 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 21:07:27,994 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:07:27,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:07:27,995 INFO L82 PathProgramCache]: Analyzing trace with hash -1332945993, now seen corresponding path program 1 times [2020-10-14 21:07:27,995 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:07:27,995 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1579278387] [2020-10-14 21:07:27,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:07:28,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:07:28,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:28,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:28,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:07:28,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-14 21:07:28,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:07:28,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 544 [2020-10-14 21:07:28,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:07:28,575 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:07:28,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:07:28,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:07:28,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-14 21:07:28,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:07:28,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:07:28,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:07:28,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:28,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:07:28,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:07:28,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:07:28,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 21:07:28,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:07:28,643 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:07:28,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:07:28,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:07:28,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:07:28,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:07:28,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:07:28,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:07:28,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:28,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:07:28,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-14 21:07:28,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:07:28,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-14 21:07:28,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:07:28,809 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:07:28,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:07:28,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:07:28,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-14 21:07:28,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:07:28,913 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:07:28,916 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1579278387] [2020-10-14 21:07:28,916 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:07:28,917 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 21:07:28,917 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365767210] [2020-10-14 21:07:28,918 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:07:28,918 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:07:28,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:07:28,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:07:28,919 INFO L87 Difference]: Start difference. First operand 6371 states and 8489 transitions. Second operand 7 states. [2020-10-14 21:07:41,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:07:41,354 INFO L93 Difference]: Finished difference Result 18741 states and 25801 transitions. [2020-10-14 21:07:41,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 21:07:41,356 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 114 [2020-10-14 21:07:41,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:07:41,427 INFO L225 Difference]: With dead ends: 18741 [2020-10-14 21:07:41,427 INFO L226 Difference]: Without dead ends: 12376 [2020-10-14 21:07:41,444 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:07:41,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12376 states. [2020-10-14 21:07:41,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12376 to 12191. [2020-10-14 21:07:41,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12191 states. [2020-10-14 21:07:41,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12191 states to 12191 states and 15645 transitions. [2020-10-14 21:07:41,862 INFO L78 Accepts]: Start accepts. Automaton has 12191 states and 15645 transitions. Word has length 114 [2020-10-14 21:07:41,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:07:41,864 INFO L479 AbstractCegarLoop]: Abstraction has 12191 states and 15645 transitions. [2020-10-14 21:07:41,864 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:07:41,864 INFO L276 IsEmpty]: Start isEmpty. Operand 12191 states and 15645 transitions. [2020-10-14 21:07:41,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-10-14 21:07:41,875 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:07:41,876 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:07:41,876 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 21:07:41,876 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:07:41,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:07:41,877 INFO L82 PathProgramCache]: Analyzing trace with hash 245870510, now seen corresponding path program 1 times [2020-10-14 21:07:41,877 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:07:41,877 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [289191213] [2020-10-14 21:07:41,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:07:41,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:07:41,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:42,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:43,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:07:43,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-10-14 21:07:43,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:07:43,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1627 [2020-10-14 21:07:43,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:07:43,560 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:07:43,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:07:43,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:07:43,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-14 21:07:43,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:07:43,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:07:43,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:07:43,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:43,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:07:43,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:07:43,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:07:43,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 21:07:43,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:07:43,668 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:07:43,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:07:43,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:07:43,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:07:43,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:07:43,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:07:43,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:07:43,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:44,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:07:44,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-14 21:07:44,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:07:44,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 346 [2020-10-14 21:07:44,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:07:44,084 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:07:44,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:07:44,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:07:44,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-14 21:07:44,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:07:44,404 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:07:44,405 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [289191213] [2020-10-14 21:07:44,405 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:07:44,405 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 21:07:44,406 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648166983] [2020-10-14 21:07:44,406 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:07:44,407 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:07:44,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:07:44,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:07:44,408 INFO L87 Difference]: Start difference. First operand 12191 states and 15645 transitions. Second operand 7 states. [2020-10-14 21:07:59,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:07:59,230 INFO L93 Difference]: Finished difference Result 24372 states and 33668 transitions. [2020-10-14 21:07:59,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 21:07:59,233 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 177 [2020-10-14 21:07:59,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:07:59,303 INFO L225 Difference]: With dead ends: 24372 [2020-10-14 21:07:59,303 INFO L226 Difference]: Without dead ends: 17650 [2020-10-14 21:07:59,323 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:07:59,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17650 states. [2020-10-14 21:07:59,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17650 to 16439. [2020-10-14 21:07:59,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16439 states. [2020-10-14 21:07:59,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16439 states to 16439 states and 20603 transitions. [2020-10-14 21:07:59,715 INFO L78 Accepts]: Start accepts. Automaton has 16439 states and 20603 transitions. Word has length 177 [2020-10-14 21:07:59,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:07:59,715 INFO L479 AbstractCegarLoop]: Abstraction has 16439 states and 20603 transitions. [2020-10-14 21:07:59,715 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:07:59,716 INFO L276 IsEmpty]: Start isEmpty. Operand 16439 states and 20603 transitions. [2020-10-14 21:07:59,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-10-14 21:07:59,719 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:07:59,719 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, 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] [2020-10-14 21:07:59,720 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 21:07:59,720 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:07:59,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:07:59,720 INFO L82 PathProgramCache]: Analyzing trace with hash -1355076569, now seen corresponding path program 1 times [2020-10-14 21:07:59,721 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:07:59,721 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1195170958] [2020-10-14 21:07:59,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:07:59,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:07:59,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:59,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:01,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:01,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:08:01,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-14 21:08:01,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:08:01,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1736 [2020-10-14 21:08:01,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:08:01,522 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:08:01,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:08:01,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-14 21:08:01,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-14 21:08:01,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:08:01,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:08:01,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:08:01,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:01,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:08:01,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:08:01,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:08:01,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 21:08:01,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:08:01,608 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:08:01,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:08:01,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:08:01,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:08:01,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:08:01,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:08:01,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:08:01,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:01,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:08:01,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 21:08:01,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:08:01,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-14 21:08:01,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:08:01,693 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:08:01,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:08:01,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:08:01,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 21:08:01,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:08:01,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-14 21:08:01,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:08:01,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:01,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:08:01,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-14 21:08:01,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:08:01,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-10-14 21:08:01,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:08:01,901 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:08:01,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:08:01,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:08:01,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-14 21:08:01,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:08:02,016 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 116 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 21:08:02,016 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1195170958] [2020-10-14 21:08:02,017 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:08:02,018 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:08:02,018 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095286676] [2020-10-14 21:08:02,019 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:08:02,019 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:08:02,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:08:02,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:08:02,020 INFO L87 Difference]: Start difference. First operand 16439 states and 20603 transitions. Second operand 7 states. [2020-10-14 21:08:16,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:08:16,988 INFO L93 Difference]: Finished difference Result 33902 states and 44669 transitions. [2020-10-14 21:08:16,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 21:08:16,989 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 204 [2020-10-14 21:08:16,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:08:17,044 INFO L225 Difference]: With dead ends: 33902 [2020-10-14 21:08:17,044 INFO L226 Difference]: Without dead ends: 17467 [2020-10-14 21:08:17,074 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-14 21:08:17,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17467 states. [2020-10-14 21:08:17,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17467 to 15673. [2020-10-14 21:08:17,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15673 states. [2020-10-14 21:08:17,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15673 states to 15673 states and 19073 transitions. [2020-10-14 21:08:17,426 INFO L78 Accepts]: Start accepts. Automaton has 15673 states and 19073 transitions. Word has length 204 [2020-10-14 21:08:17,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:08:17,426 INFO L479 AbstractCegarLoop]: Abstraction has 15673 states and 19073 transitions. [2020-10-14 21:08:17,427 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:08:17,427 INFO L276 IsEmpty]: Start isEmpty. Operand 15673 states and 19073 transitions. [2020-10-14 21:08:17,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2020-10-14 21:08:17,430 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:08:17,431 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, 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] [2020-10-14 21:08:17,431 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 21:08:17,431 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:08:17,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:08:17,431 INFO L82 PathProgramCache]: Analyzing trace with hash -258644322, now seen corresponding path program 1 times [2020-10-14 21:08:17,432 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:08:17,432 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [236966315] [2020-10-14 21:08:17,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:08:17,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:08:17,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:17,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:18,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:18,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:08:18,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 261 [2020-10-14 21:08:18,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:08:18,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1145 [2020-10-14 21:08:18,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:08:18,631 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:08:18,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:08:18,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-10-14 21:08:18,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-14 21:08:18,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:08:18,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:08:18,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:08:18,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:18,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:08:18,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:08:18,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:08:18,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 21:08:18,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:08:18,734 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:08:18,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:08:18,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:08:18,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:08:18,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:08:18,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:08:18,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:08:18,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:18,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:08:18,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-14 21:08:18,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:08:18,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-14 21:08:18,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:08:18,907 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:08:18,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:08:18,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:08:18,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-14 21:08:18,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:08:18,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-14 21:08:18,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:08:18,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:19,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:19,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:08:19,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 21:08:19,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:08:19,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-14 21:08:19,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:08:19,085 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:08:19,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:08:19,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:08:19,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 21:08:19,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:08:19,171 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 44 proven. 2 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-10-14 21:08:19,172 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [236966315] [2020-10-14 21:08:19,172 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:08:19,172 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 21:08:19,174 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117219375] [2020-10-14 21:08:19,174 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 21:08:19,175 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:08:19,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 21:08:19,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 21:08:19,176 INFO L87 Difference]: Start difference. First operand 15673 states and 19073 transitions. Second operand 6 states. [2020-10-14 21:08:41,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:08:41,919 INFO L93 Difference]: Finished difference Result 48209 states and 63605 transitions. [2020-10-14 21:08:41,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 21:08:41,921 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 249 [2020-10-14 21:08:41,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:08:42,021 INFO L225 Difference]: With dead ends: 48209 [2020-10-14 21:08:42,022 INFO L226 Difference]: Without dead ends: 31624 [2020-10-14 21:08:42,060 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 21:08:42,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31624 states. [2020-10-14 21:08:42,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31624 to 30812. [2020-10-14 21:08:42,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30812 states. [2020-10-14 21:08:42,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30812 states to 30812 states and 37986 transitions. [2020-10-14 21:08:42,621 INFO L78 Accepts]: Start accepts. Automaton has 30812 states and 37986 transitions. Word has length 249 [2020-10-14 21:08:42,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:08:42,623 INFO L479 AbstractCegarLoop]: Abstraction has 30812 states and 37986 transitions. [2020-10-14 21:08:42,623 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 21:08:42,623 INFO L276 IsEmpty]: Start isEmpty. Operand 30812 states and 37986 transitions. [2020-10-14 21:08:42,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2020-10-14 21:08:42,633 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:08:42,633 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, 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, 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] [2020-10-14 21:08:42,634 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 21:08:42,634 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:08:42,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:08:42,634 INFO L82 PathProgramCache]: Analyzing trace with hash 488711250, now seen corresponding path program 1 times [2020-10-14 21:08:42,635 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:08:42,635 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1109862065] [2020-10-14 21:08:42,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:08:42,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:08:42,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:43,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:44,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:44,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:08:44,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 279 [2020-10-14 21:08:44,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:08:44,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1337 [2020-10-14 21:08:44,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:08:44,043 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:08:44,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:08:44,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 159 [2020-10-14 21:08:44,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-14 21:08:44,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:08:44,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:08:44,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:08:44,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:44,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:08:44,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:08:44,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:08:44,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 21:08:44,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:08:44,161 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:08:44,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:08:44,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:08:44,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:08:44,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:08:44,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:08:44,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:08:44,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:44,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:08:44,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-14 21:08:44,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:08:44,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-14 21:08:44,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:08:44,351 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:08:44,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:08:44,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:08:44,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-14 21:08:44,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:08:44,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-14 21:08:44,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:08:44,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:44,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:44,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:08:44,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-14 21:08:44,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:08:44,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 208 [2020-10-14 21:08:44,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:08:44,664 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:08:44,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:08:44,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:08:44,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-14 21:08:44,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:08:44,744 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 42 proven. 2 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2020-10-14 21:08:44,745 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1109862065] [2020-10-14 21:08:44,745 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:08:44,745 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 21:08:44,746 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491862111] [2020-10-14 21:08:44,746 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 21:08:44,746 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:08:44,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 21:08:44,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 21:08:44,747 INFO L87 Difference]: Start difference. First operand 30812 states and 37986 transitions. Second operand 6 states. [2020-10-14 21:09:09,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:09:09,901 INFO L93 Difference]: Finished difference Result 77386 states and 97793 transitions. [2020-10-14 21:09:09,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 21:09:09,904 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 267 [2020-10-14 21:09:09,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:09:10,040 INFO L225 Difference]: With dead ends: 77386 [2020-10-14 21:09:10,040 INFO L226 Difference]: Without dead ends: 45743 [2020-10-14 21:09:10,101 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 21:09:10,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45743 states. [2020-10-14 21:09:11,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45743 to 43355. [2020-10-14 21:09:11,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43355 states. [2020-10-14 21:09:11,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43355 states to 43355 states and 54131 transitions. [2020-10-14 21:09:11,212 INFO L78 Accepts]: Start accepts. Automaton has 43355 states and 54131 transitions. Word has length 267 [2020-10-14 21:09:11,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:09:11,213 INFO L479 AbstractCegarLoop]: Abstraction has 43355 states and 54131 transitions. [2020-10-14 21:09:11,213 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 21:09:11,213 INFO L276 IsEmpty]: Start isEmpty. Operand 43355 states and 54131 transitions. [2020-10-14 21:09:11,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2020-10-14 21:09:11,221 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:09:11,222 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, 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, 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, 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] [2020-10-14 21:09:11,222 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 21:09:11,222 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:09:11,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:09:11,223 INFO L82 PathProgramCache]: Analyzing trace with hash -557477981, now seen corresponding path program 1 times [2020-10-14 21:09:11,223 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:09:11,223 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [521652711] [2020-10-14 21:09:11,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:09:11,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:09:11,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:09:11,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:09:11,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 326 [2020-10-14 21:09:11,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:09:11,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 523 [2020-10-14 21:09:11,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:09:11,826 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:09:11,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:09:11,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 297 [2020-10-14 21:09:11,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 21:09:11,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:09:11,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:09:11,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:09:11,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:09:11,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:09:11,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:09:11,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:09:11,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 21:09:11,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:09:11,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:09:11,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:09:11,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:09:11,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:09:11,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:09:11,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:09:12,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:09:12,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:09:12,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:09:12,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-14 21:09:12,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:09:12,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-14 21:09:12,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:09:12,063 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:09:12,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:09:12,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:09:12,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:09:12,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:09:12,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-14 21:09:12,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:09:12,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:09:12,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:09:12,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-14 21:09:12,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:09:12,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-10-14 21:09:12,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:09:12,304 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:09:12,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:09:12,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:09:12,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-10-14 21:09:12,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:09:12,431 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 45 proven. 2 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2020-10-14 21:09:12,437 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [521652711] [2020-10-14 21:09:12,438 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:09:12,438 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 21:09:12,439 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008098432] [2020-10-14 21:09:12,440 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 21:09:12,440 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:09:12,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 21:09:12,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 21:09:12,441 INFO L87 Difference]: Start difference. First operand 43355 states and 54131 transitions. Second operand 5 states. [2020-10-14 21:09:27,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:09:27,539 INFO L93 Difference]: Finished difference Result 86019 states and 107691 transitions. [2020-10-14 21:09:27,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 21:09:27,544 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 314 [2020-10-14 21:09:27,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:09:27,683 INFO L225 Difference]: With dead ends: 86019 [2020-10-14 21:09:27,683 INFO L226 Difference]: Without dead ends: 43437 [2020-10-14 21:09:27,765 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 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 21:09:27,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43437 states. [2020-10-14 21:09:29,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43437 to 43329. [2020-10-14 21:09:29,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43329 states. [2020-10-14 21:09:29,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43329 states to 43329 states and 51877 transitions. [2020-10-14 21:09:29,819 INFO L78 Accepts]: Start accepts. Automaton has 43329 states and 51877 transitions. Word has length 314 [2020-10-14 21:09:29,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:09:29,820 INFO L479 AbstractCegarLoop]: Abstraction has 43329 states and 51877 transitions. [2020-10-14 21:09:29,820 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 21:09:29,820 INFO L276 IsEmpty]: Start isEmpty. Operand 43329 states and 51877 transitions. [2020-10-14 21:09:29,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2020-10-14 21:09:29,824 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:09:29,825 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:09:29,825 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 21:09:29,825 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:09:29,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:09:29,825 INFO L82 PathProgramCache]: Analyzing trace with hash -920215177, now seen corresponding path program 1 times [2020-10-14 21:09:29,826 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:09:29,826 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1556744486] [2020-10-14 21:09:29,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:09:29,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:09:29,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:09:30,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:09:30,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:09:33,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:09:33,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 354 [2020-10-14 21:09:33,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:09:33,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3376 [2020-10-14 21:09:33,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:09:33,269 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:09:33,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:09:33,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 250 [2020-10-14 21:09:33,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 21:09:33,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:09:33,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:09:33,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:09:33,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:09:33,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:09:33,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:09:33,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:09:33,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 21:09:33,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:09:33,420 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:09:33,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:09:33,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:09:33,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:09:33,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:09:33,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:09:33,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:09:33,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:09:33,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:09:33,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-14 21:09:33,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:09:33,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-14 21:09:33,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:09:33,546 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:09:33,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:09:33,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:09:33,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:09:33,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:09:33,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-14 21:09:33,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:09:33,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:09:33,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:09:33,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-14 21:09:33,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:09:33,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-14 21:09:33,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:09:33,713 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:09:33,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:09:33,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:09:33,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-14 21:09:33,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:09:33,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-10-14 21:09:33,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:09:33,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:09:33,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:09:33,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 21:09:33,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:09:33,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-14 21:09:33,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:09:33,877 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:09:33,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:09:33,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:09:33,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 21:09:33,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:09:34,055 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 211 proven. 2 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2020-10-14 21:09:34,056 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1556744486] [2020-10-14 21:09:34,057 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:09:34,057 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:09:34,058 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028014614] [2020-10-14 21:09:34,059 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:09:34,060 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:09:34,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:09:34,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:09:34,060 INFO L87 Difference]: Start difference. First operand 43329 states and 51877 transitions. Second operand 7 states. [2020-10-14 21:09:54,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:09:54,523 INFO L93 Difference]: Finished difference Result 103494 states and 128542 transitions. [2020-10-14 21:09:54,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 21:09:54,527 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 340 [2020-10-14 21:09:54,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:09:54,676 INFO L225 Difference]: With dead ends: 103494 [2020-10-14 21:09:54,677 INFO L226 Difference]: Without dead ends: 60938 [2020-10-14 21:09:54,741 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:09:54,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60938 states. [2020-10-14 21:09:56,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60938 to 59214. [2020-10-14 21:09:56,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59214 states. [2020-10-14 21:09:56,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59214 states to 59214 states and 71251 transitions. [2020-10-14 21:09:56,210 INFO L78 Accepts]: Start accepts. Automaton has 59214 states and 71251 transitions. Word has length 340 [2020-10-14 21:09:56,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:09:56,211 INFO L479 AbstractCegarLoop]: Abstraction has 59214 states and 71251 transitions. [2020-10-14 21:09:56,212 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:09:56,212 INFO L276 IsEmpty]: Start isEmpty. Operand 59214 states and 71251 transitions. [2020-10-14 21:09:56,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2020-10-14 21:09:56,220 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:09:56,220 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, 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, 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] [2020-10-14 21:09:56,221 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 21:09:56,221 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:09:56,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:09:56,221 INFO L82 PathProgramCache]: Analyzing trace with hash -817524937, now seen corresponding path program 1 times [2020-10-14 21:09:56,222 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:09:56,222 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [734675437] [2020-10-14 21:09:56,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:09:56,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:09:56,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:09:56,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:10:01,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:10:01,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 386 [2020-10-14 21:10:01,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:10:01,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5084 [2020-10-14 21:10:01,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:10:01,440 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:10:01,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 21:10:01,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 159 [2020-10-14 21:10:01,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 199 [2020-10-14 21:10:01,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:10:01,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:10:01,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:10:01,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:10:01,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:10:01,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:10:01,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:10:01,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 21:10:01,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:10:01,670 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:10:01,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:10:01,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:10:01,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:10:01,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:10:01,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:10:01,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:10:01,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:10:01,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:10:01,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-14 21:10:01,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:10:01,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-10-14 21:10:01,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:10:01,929 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:10:01,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:10:01,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:10:01,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-14 21:10:01,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:10:01,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-14 21:10:02,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:10:02,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:10:02,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:10:02,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-14 21:10:02,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:10:02,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 230 [2020-10-14 21:10:02,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:10:02,245 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:10:02,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 21:10:02,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:10:02,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-10-14 21:10:02,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:10:02,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2020-10-14 21:10:02,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:10:02,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:10:02,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:10:02,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 21:10:02,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:10:02,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-14 21:10:02,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:10:02,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:10:02,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:10:02,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:10:02,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 21:10:02,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:10:02,826 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 324 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 21:10:02,826 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [734675437] [2020-10-14 21:10:02,826 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:10:02,827 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 21:10:02,827 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457230986] [2020-10-14 21:10:02,828 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 21:10:02,828 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:10:02,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 21:10:02,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-14 21:10:02,829 INFO L87 Difference]: Start difference. First operand 59214 states and 71251 transitions. Second operand 10 states.