/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label56.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 04:09:20,530 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 04:09:20,532 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 04:09:20,556 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 04:09:20,556 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 04:09:20,557 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 04:09:20,559 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 04:09:20,561 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 04:09:20,563 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 04:09:20,563 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 04:09:20,564 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 04:09:20,565 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 04:09:20,566 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 04:09:20,567 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 04:09:20,568 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 04:09:20,569 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 04:09:20,570 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 04:09:20,571 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 04:09:20,572 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 04:09:20,574 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 04:09:20,576 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 04:09:20,577 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 04:09:20,578 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 04:09:20,579 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 04:09:20,582 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 04:09:20,582 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 04:09:20,583 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 04:09:20,584 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 04:09:20,584 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 04:09:20,585 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 04:09:20,585 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 04:09:20,586 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 04:09:20,587 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 04:09:20,588 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 04:09:20,589 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 04:09:20,589 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 04:09:20,590 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 04:09:20,590 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 04:09:20,590 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 04:09:20,591 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 04:09:20,592 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 04:09:20,593 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 04:09:20,615 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 04:09:20,615 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 04:09:20,616 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 04:09:20,616 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 04:09:20,617 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 04:09:20,617 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 04:09:20,617 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 04:09:20,617 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 04:09:20,617 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 04:09:20,618 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 04:09:20,618 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 04:09:20,618 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 04:09:20,618 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 04:09:20,618 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 04:09:20,619 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 04:09:20,619 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 04:09:20,619 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 04:09:20,619 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 04:09:20,619 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 04:09:20,619 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 04:09:20,620 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 04:09:20,620 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 04:09:20,620 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 04:09:20,620 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 04:09:20,621 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 04:09:20,621 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 04:09:20,621 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 04:09:20,621 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 04:09:20,621 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 04:09:20,621 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 04:09:20,949 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 04:09:20,962 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 04:09:20,966 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 04:09:20,967 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 04:09:20,968 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 04:09:20,969 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label56.c [2020-10-14 04:09:21,032 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/056c09e3c/a3ab2f2849ea4a46b4ff972391569391/FLAG64bf7de6d [2020-10-14 04:09:21,789 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 04:09:21,790 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem17_label56.c [2020-10-14 04:09:21,816 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/056c09e3c/a3ab2f2849ea4a46b4ff972391569391/FLAG64bf7de6d [2020-10-14 04:09:21,923 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/056c09e3c/a3ab2f2849ea4a46b4ff972391569391 [2020-10-14 04:09:21,932 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 04:09:21,933 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 04:09:21,934 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 04:09:21,934 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 04:09:21,938 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 04:09:21,939 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:09:21" (1/1) ... [2020-10-14 04:09:21,942 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b5d0024 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:09:21, skipping insertion in model container [2020-10-14 04:09:21,942 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:09:21" (1/1) ... [2020-10-14 04:09:21,950 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 04:09:22,056 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 04:09:23,147 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:09:23,158 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 04:09:23,596 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:09:23,624 INFO L208 MainTranslator]: Completed translation [2020-10-14 04:09:23,624 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:09:23 WrapperNode [2020-10-14 04:09:23,625 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 04:09:23,626 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 04:09:23,626 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 04:09:23,626 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 04:09:23,644 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:09:23" (1/1) ... [2020-10-14 04:09:23,646 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:09:23" (1/1) ... [2020-10-14 04:09:23,700 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:09:23" (1/1) ... [2020-10-14 04:09:23,700 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:09:23" (1/1) ... [2020-10-14 04:09:23,808 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:09:23" (1/1) ... [2020-10-14 04:09:23,831 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:09:23" (1/1) ... [2020-10-14 04:09:23,869 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:09:23" (1/1) ... [2020-10-14 04:09:23,920 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 04:09:23,920 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 04:09:23,921 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 04:09:23,921 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 04:09:23,923 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:09:23" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 04:09:24,011 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 04:09:24,012 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 04:09:24,012 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 04:09:24,012 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 04:09:24,012 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 04:09:24,013 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 04:09:24,013 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 04:09:24,013 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 04:09:24,014 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 04:09:24,014 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 04:09:24,014 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 04:09:24,014 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 04:09:24,014 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 04:09:31,795 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 04:09:31,796 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 04:09:31,813 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:09:31 BoogieIcfgContainer [2020-10-14 04:09:31,813 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 04:09:31,816 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 04:09:31,816 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 04:09:31,821 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 04:09:31,821 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 04:09:21" (1/3) ... [2020-10-14 04:09:31,823 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23be1129 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:09:31, skipping insertion in model container [2020-10-14 04:09:31,823 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:09:23" (2/3) ... [2020-10-14 04:09:31,824 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23be1129 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:09:31, skipping insertion in model container [2020-10-14 04:09:31,825 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:09:31" (3/3) ... [2020-10-14 04:09:31,828 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem17_label56.c [2020-10-14 04:09:31,847 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 04:09:31,862 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 04:09:31,902 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 04:09:31,999 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 04:09:31,999 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 04:09:31,999 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 04:09:32,000 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 04:09:32,000 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 04:09:32,000 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 04:09:32,000 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 04:09:32,001 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 04:09:32,063 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states. [2020-10-14 04:09:32,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-14 04:09:32,080 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:09:32,081 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:09:32,082 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:09:32,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:09:32,090 INFO L82 PathProgramCache]: Analyzing trace with hash -1885916703, now seen corresponding path program 1 times [2020-10-14 04:09:32,102 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:09:32,102 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1677557083] [2020-10-14 04:09:32,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:09:32,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:09:32,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:09:33,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:09:33,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 04:09:33,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:09:33,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 655 [2020-10-14 04:09:33,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:09:33,068 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:09:33,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 04:09:33,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 04:09:33,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 04:09:33,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 04:09:33,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:09:33,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:09:33,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:09:33,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:09:33,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:09:33,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:09:33,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 04:09:33,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:09:33,249 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:09:33,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:09:33,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:09:33,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 04:09:33,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:09:33,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:09:33,286 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1677557083] [2020-10-14 04:09:33,288 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:09:33,289 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 04:09:33,290 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638140294] [2020-10-14 04:09:33,299 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:09:33,299 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:09:33,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:09:33,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:09:33,323 INFO L87 Difference]: Start difference. First operand 603 states. Second operand 5 states. [2020-10-14 04:09:47,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:09:47,831 INFO L93 Difference]: Finished difference Result 2169 states and 4016 transitions. [2020-10-14 04:09:47,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 04:09:47,834 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 72 [2020-10-14 04:09:47,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:09:47,893 INFO L225 Difference]: With dead ends: 2169 [2020-10-14 04:09:47,893 INFO L226 Difference]: Without dead ends: 1472 [2020-10-14 04:09:47,911 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:09:47,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1472 states. [2020-10-14 04:09:48,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1472 to 1443. [2020-10-14 04:09:48,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1443 states. [2020-10-14 04:09:48,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1443 states to 1443 states and 2111 transitions. [2020-10-14 04:09:48,124 INFO L78 Accepts]: Start accepts. Automaton has 1443 states and 2111 transitions. Word has length 72 [2020-10-14 04:09:48,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:09:48,125 INFO L479 AbstractCegarLoop]: Abstraction has 1443 states and 2111 transitions. [2020-10-14 04:09:48,125 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:09:48,126 INFO L276 IsEmpty]: Start isEmpty. Operand 1443 states and 2111 transitions. [2020-10-14 04:09:48,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-10-14 04:09:48,133 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:09:48,134 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 04:09:48,134 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 04:09:48,135 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:09:48,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:09:48,135 INFO L82 PathProgramCache]: Analyzing trace with hash -1190449908, now seen corresponding path program 1 times [2020-10-14 04:09:48,135 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:09:48,136 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1618390553] [2020-10-14 04:09:48,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:09:48,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:09:48,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:09:48,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:09:48,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:09:50,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:09:50,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-14 04:09:50,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:09:50,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2511 [2020-10-14 04:09:50,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:09:50,706 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:09:50,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:09:50,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-14 04:09:50,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-14 04:09:50,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 04:09:50,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:09:50,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:09:50,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:09:50,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:09:50,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:09:50,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:09:50,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 04:09:50,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:09:50,869 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:09:50,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:09:50,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:09:50,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:09:50,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:09:50,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:09:50,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:09:50,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:09:51,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:09:51,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 04:09:51,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:09:51,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 164 [2020-10-14 04:09:51,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:09:51,089 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:09:51,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:09:51,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:09:51,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-14 04:09:51,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 04:09:51,176 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 64 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:09:51,176 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1618390553] [2020-10-14 04:09:51,177 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:09:51,177 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:09:51,177 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521578784] [2020-10-14 04:09:51,179 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:09:51,180 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:09:51,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:09:51,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:09:51,180 INFO L87 Difference]: Start difference. First operand 1443 states and 2111 transitions. Second operand 5 states. [2020-10-14 04:10:07,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:10:07,234 INFO L93 Difference]: Finished difference Result 4206 states and 6198 transitions. [2020-10-14 04:10:07,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:10:07,235 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 143 [2020-10-14 04:10:07,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:10:07,255 INFO L225 Difference]: With dead ends: 4206 [2020-10-14 04:10:07,255 INFO L226 Difference]: Without dead ends: 2769 [2020-10-14 04:10:07,261 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:10:07,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2769 states. [2020-10-14 04:10:07,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2769 to 2765. [2020-10-14 04:10:07,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2765 states. [2020-10-14 04:10:07,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2765 states to 2765 states and 3651 transitions. [2020-10-14 04:10:07,410 INFO L78 Accepts]: Start accepts. Automaton has 2765 states and 3651 transitions. Word has length 143 [2020-10-14 04:10:07,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:10:07,411 INFO L479 AbstractCegarLoop]: Abstraction has 2765 states and 3651 transitions. [2020-10-14 04:10:07,411 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:10:07,411 INFO L276 IsEmpty]: Start isEmpty. Operand 2765 states and 3651 transitions. [2020-10-14 04:10:07,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-14 04:10:07,415 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:10:07,415 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 04:10:07,416 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 04:10:07,416 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:10:07,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:10:07,416 INFO L82 PathProgramCache]: Analyzing trace with hash -1199219112, now seen corresponding path program 1 times [2020-10-14 04:10:07,417 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:10:07,417 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1934931995] [2020-10-14 04:10:07,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:10:07,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:10:07,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:10:07,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:10:08,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:10:11,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:10:11,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-14 04:10:11,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:10:11,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3850 [2020-10-14 04:10:11,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:10:11,320 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:10:11,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:10:11,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-14 04:10:11,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-14 04:10:11,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:10:11,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:10:11,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:10:11,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:10:11,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:10:11,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:10:11,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:10:11,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 04:10:11,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:10:11,464 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:10:11,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:10:11,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:10:11,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:10:11,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:10:11,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:10:11,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:10:11,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:10:11,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:10:11,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 04:10:11,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:10:11,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-14 04:10:11,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:10:11,644 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:10:11,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:10:11,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:10:11,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-14 04:10:11,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:10:11,754 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 64 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:10:11,755 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1934931995] [2020-10-14 04:10:11,755 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:10:11,755 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:10:11,756 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219822042] [2020-10-14 04:10:11,758 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:10:11,759 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:10:11,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:10:11,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:10:11,760 INFO L87 Difference]: Start difference. First operand 2765 states and 3651 transitions. Second operand 5 states. [2020-10-14 04:10:26,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:10:26,418 INFO L93 Difference]: Finished difference Result 5540 states and 7662 transitions. [2020-10-14 04:10:26,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:10:26,419 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 146 [2020-10-14 04:10:26,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:10:26,442 INFO L225 Difference]: With dead ends: 5540 [2020-10-14 04:10:26,442 INFO L226 Difference]: Without dead ends: 3662 [2020-10-14 04:10:26,448 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:10:26,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3662 states. [2020-10-14 04:10:26,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3662 to 3656. [2020-10-14 04:10:26,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3656 states. [2020-10-14 04:10:26,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3656 states to 3656 states and 4737 transitions. [2020-10-14 04:10:26,554 INFO L78 Accepts]: Start accepts. Automaton has 3656 states and 4737 transitions. Word has length 146 [2020-10-14 04:10:26,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:10:26,555 INFO L479 AbstractCegarLoop]: Abstraction has 3656 states and 4737 transitions. [2020-10-14 04:10:26,555 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:10:26,555 INFO L276 IsEmpty]: Start isEmpty. Operand 3656 states and 4737 transitions. [2020-10-14 04:10:26,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-10-14 04:10:26,559 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:10:26,559 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 04:10:26,559 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 04:10:26,559 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:10:26,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:10:26,560 INFO L82 PathProgramCache]: Analyzing trace with hash -1238204676, now seen corresponding path program 1 times [2020-10-14 04:10:26,560 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:10:26,560 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [412194276] [2020-10-14 04:10:26,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:10:26,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:10:26,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:10:26,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:10:27,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:10:28,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:10:28,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-10-14 04:10:28,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:10:28,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1510 [2020-10-14 04:10:28,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:10:28,108 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:10:28,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:10:28,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-10-14 04:10:28,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-14 04:10:28,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:10:28,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:10:28,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:10:28,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:10:28,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:10:28,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:10:28,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:10:28,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:10:28,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:10:28,206 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:10:28,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:10:28,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:10:28,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:10:28,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:10:28,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:10:28,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:10:28,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:10:28,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:10:28,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 04:10:28,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:10:28,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-14 04:10:28,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:10:28,365 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:10:28,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:10:28,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:10:28,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 04:10:28,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:10:28,421 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 64 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:10:28,422 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [412194276] [2020-10-14 04:10:28,422 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:10:28,423 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:10:28,423 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739150000] [2020-10-14 04:10:28,424 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:10:28,424 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:10:28,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:10:28,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:10:28,426 INFO L87 Difference]: Start difference. First operand 3656 states and 4737 transitions. Second operand 5 states. [2020-10-14 04:10:46,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:10:46,669 INFO L93 Difference]: Finished difference Result 10401 states and 13702 transitions. [2020-10-14 04:10:46,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:10:46,672 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 151 [2020-10-14 04:10:46,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:10:46,708 INFO L225 Difference]: With dead ends: 10401 [2020-10-14 04:10:46,709 INFO L226 Difference]: Without dead ends: 6751 [2020-10-14 04:10:46,720 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:10:46,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6751 states. [2020-10-14 04:10:46,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6751 to 6725. [2020-10-14 04:10:46,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6725 states. [2020-10-14 04:10:46,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6725 states to 6725 states and 8431 transitions. [2020-10-14 04:10:46,897 INFO L78 Accepts]: Start accepts. Automaton has 6725 states and 8431 transitions. Word has length 151 [2020-10-14 04:10:46,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:10:46,897 INFO L479 AbstractCegarLoop]: Abstraction has 6725 states and 8431 transitions. [2020-10-14 04:10:46,898 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:10:46,898 INFO L276 IsEmpty]: Start isEmpty. Operand 6725 states and 8431 transitions. [2020-10-14 04:10:46,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-10-14 04:10:46,902 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:10:46,902 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 04:10:46,902 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 04:10:46,903 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:10:46,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:10:46,903 INFO L82 PathProgramCache]: Analyzing trace with hash -733765192, now seen corresponding path program 1 times [2020-10-14 04:10:46,903 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:10:46,904 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1351489703] [2020-10-14 04:10:46,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:10:46,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:10:46,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:10:47,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:10:47,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-10-14 04:10:47,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:10:47,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 480 [2020-10-14 04:10:47,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:10:47,426 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:10:47,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 04:10:47,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 04:10:47,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-14 04:10:47,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:10:47,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:10:47,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:10:47,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:10:47,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:10:47,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:10:47,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:10:47,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 04:10:47,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:10:47,527 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:10:47,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:10:47,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:10:47,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 04:10:47,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:10:47,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:10:47,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:10:47,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:10:47,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:10:47,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-14 04:10:47,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:10:47,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 191 [2020-10-14 04:10:47,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:10:47,780 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:10:47,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:10:47,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:10:47,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-14 04:10:47,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:10:47,899 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:10:47,900 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1351489703] [2020-10-14 04:10:47,900 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:10:47,901 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 04:10:47,903 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226823067] [2020-10-14 04:10:47,904 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:10:47,905 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:10:47,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:10:47,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:10:47,905 INFO L87 Difference]: Start difference. First operand 6725 states and 8431 transitions. Second operand 7 states. [2020-10-14 04:11:02,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:11:02,436 INFO L93 Difference]: Finished difference Result 12672 states and 16090 transitions. [2020-10-14 04:11:02,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 04:11:02,443 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 169 [2020-10-14 04:11:02,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:11:02,476 INFO L225 Difference]: With dead ends: 12672 [2020-10-14 04:11:02,476 INFO L226 Difference]: Without dead ends: 5953 [2020-10-14 04:11:02,495 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-14 04:11:02,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5953 states. [2020-10-14 04:11:02,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5953 to 5945. [2020-10-14 04:11:02,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5945 states. [2020-10-14 04:11:02,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5945 states to 5945 states and 7524 transitions. [2020-10-14 04:11:02,640 INFO L78 Accepts]: Start accepts. Automaton has 5945 states and 7524 transitions. Word has length 169 [2020-10-14 04:11:02,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:11:02,640 INFO L479 AbstractCegarLoop]: Abstraction has 5945 states and 7524 transitions. [2020-10-14 04:11:02,640 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:11:02,640 INFO L276 IsEmpty]: Start isEmpty. Operand 5945 states and 7524 transitions. [2020-10-14 04:11:02,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2020-10-14 04:11:02,651 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:11:02,652 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:11:02,652 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 04:11:02,652 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:11:02,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:11:02,653 INFO L82 PathProgramCache]: Analyzing trace with hash -901973263, now seen corresponding path program 1 times [2020-10-14 04:11:02,653 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:11:02,654 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [750979980] [2020-10-14 04:11:02,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:11:02,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:11:02,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:11:02,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:11:03,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:11:05,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:11:07,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:11:07,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 231 [2020-10-14 04:11:07,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 04:11:07,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-14 04:11:07,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:11:07,739 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:11:07,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:11:07,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-14 04:11:07,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 04:11:07,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:11:07,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:11:07,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:11:07,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:11:07,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:11:07,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:11:07,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:11:07,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 04:11:07,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:11:07,880 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:11:07,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:11:07,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:11:07,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:11:07,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:11:07,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:11:07,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:11:07,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:11:08,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:11:08,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 04:11:08,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:11:08,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-14 04:11:08,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:11:08,044 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:11:08,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:11:08,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:11:08,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-14 04:11:08,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:11:08,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-14 04:11:08,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:11:08,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:11:08,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:11:08,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 04:11:08,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:11:08,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-10-14 04:11:08,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:11:08,267 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:11:08,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:11:08,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:11:08,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 04:11:08,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:11:08,457 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 200 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 04:11:08,457 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [750979980] [2020-10-14 04:11:08,458 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:11:08,459 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:11:08,459 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781856007] [2020-10-14 04:11:08,460 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:11:08,460 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:11:08,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:11:08,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:11:08,460 INFO L87 Difference]: Start difference. First operand 5945 states and 7524 transitions. Second operand 7 states. [2020-10-14 04:11:28,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:11:28,571 INFO L93 Difference]: Finished difference Result 15653 states and 20638 transitions. [2020-10-14 04:11:28,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 04:11:28,574 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 219 [2020-10-14 04:11:28,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:11:28,614 INFO L225 Difference]: With dead ends: 15653 [2020-10-14 04:11:28,614 INFO L226 Difference]: Without dead ends: 7883 [2020-10-14 04:11:28,637 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:11:28,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7883 states. [2020-10-14 04:11:28,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7883 to 6516. [2020-10-14 04:11:28,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6516 states. [2020-10-14 04:11:28,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6516 states to 6516 states and 7797 transitions. [2020-10-14 04:11:28,813 INFO L78 Accepts]: Start accepts. Automaton has 6516 states and 7797 transitions. Word has length 219 [2020-10-14 04:11:28,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:11:28,813 INFO L479 AbstractCegarLoop]: Abstraction has 6516 states and 7797 transitions. [2020-10-14 04:11:28,814 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:11:28,814 INFO L276 IsEmpty]: Start isEmpty. Operand 6516 states and 7797 transitions. [2020-10-14 04:11:28,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2020-10-14 04:11:28,818 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:11:28,819 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:11:28,819 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 04:11:28,819 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:11:28,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:11:28,820 INFO L82 PathProgramCache]: Analyzing trace with hash -1046125987, now seen corresponding path program 1 times [2020-10-14 04:11:28,820 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:11:28,821 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1248048578] [2020-10-14 04:11:28,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:11:28,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:11:28,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:11:29,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:11:30,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:11:30,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-14 04:11:30,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:11:30,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1395 [2020-10-14 04:11:30,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:11:30,296 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:11:30,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:11:30,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-14 04:11:30,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 04:11:30,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:11:30,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:11:30,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:11:30,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:11:30,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:11:30,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:11:30,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:11:30,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 04:11:30,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:11:30,442 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:11:30,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:11:30,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:11:30,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:11:30,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:11:30,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:11:30,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:11:30,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:11:30,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:11:30,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 04:11:30,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:11:30,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-14 04:11:30,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:11:30,643 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:11:30,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:11:30,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:11:30,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 04:11:30,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:11:30,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 04:11:30,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:11:30,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:11:30,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:11:30,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 04:11:30,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:11:30,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-10-14 04:11:30,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:11:30,852 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:11:30,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:11:30,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:11:30,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 04:11:30,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:11:31,102 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 200 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 04:11:31,103 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1248048578] [2020-10-14 04:11:31,103 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:11:31,103 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:11:31,105 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267725709] [2020-10-14 04:11:31,105 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:11:31,106 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:11:31,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:11:31,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:11:31,106 INFO L87 Difference]: Start difference. First operand 6516 states and 7797 transitions. Second operand 7 states. [2020-10-14 04:11:43,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:11:43,303 INFO L93 Difference]: Finished difference Result 15233 states and 18651 transitions. [2020-10-14 04:11:43,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 04:11:43,305 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 232 [2020-10-14 04:11:43,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:11:43,338 INFO L225 Difference]: With dead ends: 15233 [2020-10-14 04:11:43,338 INFO L226 Difference]: Without dead ends: 8723 [2020-10-14 04:11:43,356 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:11:43,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8723 states. [2020-10-14 04:11:43,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8723 to 8687. [2020-10-14 04:11:43,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8687 states. [2020-10-14 04:11:43,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8687 states to 8687 states and 10196 transitions. [2020-10-14 04:11:43,627 INFO L78 Accepts]: Start accepts. Automaton has 8687 states and 10196 transitions. Word has length 232 [2020-10-14 04:11:43,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:11:43,628 INFO L479 AbstractCegarLoop]: Abstraction has 8687 states and 10196 transitions. [2020-10-14 04:11:43,628 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:11:43,628 INFO L276 IsEmpty]: Start isEmpty. Operand 8687 states and 10196 transitions. [2020-10-14 04:11:43,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2020-10-14 04:11:43,634 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:11:43,634 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 04:11:43,634 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 04:11:43,634 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:11:43,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:11:43,635 INFO L82 PathProgramCache]: Analyzing trace with hash -849830503, now seen corresponding path program 1 times [2020-10-14 04:11:43,635 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:11:43,636 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [199719117] [2020-10-14 04:11:43,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:11:43,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:11:43,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:11:44,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:11:45,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:11:45,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:11:47,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:11:47,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 246 [2020-10-14 04:11:47,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 04:11:47,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3621 [2020-10-14 04:11:47,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:11:47,335 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:11:47,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:11:47,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 174 [2020-10-14 04:11:47,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-14 04:11:47,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:11:47,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:11:47,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:11:47,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:11:47,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:11:47,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:11:47,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:11:47,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:11:47,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:11:47,468 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:11:47,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:11:47,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:11:47,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:11:47,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:11:47,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:11:47,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:11:47,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:11:47,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:11:47,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 04:11:47,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:11:47,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-14 04:11:47,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:11:47,541 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:11:47,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:11:47,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:11:47,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:11:47,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:11:47,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 04:11:47,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:11:47,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:11:47,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:11:47,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 04:11:47,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:11:47,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-14 04:11:47,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:11:47,664 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:11:47,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:11:47,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:11:47,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 04:11:47,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:11:47,755 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 131 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-10-14 04:11:47,755 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [199719117] [2020-10-14 04:11:47,755 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:11:47,756 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:11:47,756 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445906083] [2020-10-14 04:11:47,756 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:11:47,757 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:11:47,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:11:47,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:11:47,757 INFO L87 Difference]: Start difference. First operand 8687 states and 10196 transitions. Second operand 5 states. [2020-10-14 04:12:03,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:12:03,989 INFO L93 Difference]: Finished difference Result 19201 states and 23023 transitions. [2020-10-14 04:12:03,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:12:03,992 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 234 [2020-10-14 04:12:03,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:12:04,025 INFO L225 Difference]: With dead ends: 19201 [2020-10-14 04:12:04,025 INFO L226 Difference]: Without dead ends: 10057 [2020-10-14 04:12:04,046 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 04:12:04,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10057 states. [2020-10-14 04:12:04,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10057 to 10025. [2020-10-14 04:12:04,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10025 states. [2020-10-14 04:12:04,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10025 states to 10025 states and 11912 transitions. [2020-10-14 04:12:04,269 INFO L78 Accepts]: Start accepts. Automaton has 10025 states and 11912 transitions. Word has length 234 [2020-10-14 04:12:04,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:12:04,270 INFO L479 AbstractCegarLoop]: Abstraction has 10025 states and 11912 transitions. [2020-10-14 04:12:04,270 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:12:04,270 INFO L276 IsEmpty]: Start isEmpty. Operand 10025 states and 11912 transitions. [2020-10-14 04:12:04,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2020-10-14 04:12:04,275 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:12:04,275 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:12:04,276 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 04:12:04,276 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:12:04,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:12:04,276 INFO L82 PathProgramCache]: Analyzing trace with hash -202647351, now seen corresponding path program 1 times [2020-10-14 04:12:04,277 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:12:04,277 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1308673554] [2020-10-14 04:12:04,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:12:04,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:12:04,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:12:04,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:12:05,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:12:07,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:12:07,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 254 [2020-10-14 04:12:07,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:12:07,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3609 [2020-10-14 04:12:07,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:12:07,950 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:12:07,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:12:07,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 182 [2020-10-14 04:12:07,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-14 04:12:07,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:12:08,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:12:08,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:12:08,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:12:08,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:12:08,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:12:08,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:12:08,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:12:08,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:12:08,065 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:12:08,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:12:08,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:12:08,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:12:08,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:12:08,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:12:08,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:12:08,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:12:08,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:12:08,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 04:12:08,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:12:08,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-14 04:12:08,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:12:08,200 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:12:08,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:12:08,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:12:08,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:12:08,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:12:08,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 04:12:08,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:12:08,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:12:08,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:12:08,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-14 04:12:08,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:12:08,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-14 04:12:08,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:12:08,375 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:12:08,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:12:08,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:12:08,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-14 04:12:08,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:12:08,500 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 131 proven. 2 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2020-10-14 04:12:08,507 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1308673554] [2020-10-14 04:12:08,508 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:12:08,508 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:12:08,509 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452611921] [2020-10-14 04:12:08,510 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:12:08,510 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:12:08,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:12:08,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:12:08,511 INFO L87 Difference]: Start difference. First operand 10025 states and 11912 transitions. Second operand 5 states. [2020-10-14 04:12:23,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:12:23,161 INFO L93 Difference]: Finished difference Result 20502 states and 24478 transitions. [2020-10-14 04:12:23,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:12:23,164 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 242 [2020-10-14 04:12:23,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:12:23,208 INFO L225 Difference]: With dead ends: 20502 [2020-10-14 04:12:23,209 INFO L226 Difference]: Without dead ends: 10483 [2020-10-14 04:12:23,234 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:12:23,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10483 states. [2020-10-14 04:12:23,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10483 to 10460. [2020-10-14 04:12:23,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10460 states. [2020-10-14 04:12:23,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10460 states to 10460 states and 12511 transitions. [2020-10-14 04:12:23,424 INFO L78 Accepts]: Start accepts. Automaton has 10460 states and 12511 transitions. Word has length 242 [2020-10-14 04:12:23,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:12:23,425 INFO L479 AbstractCegarLoop]: Abstraction has 10460 states and 12511 transitions. [2020-10-14 04:12:23,425 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:12:23,425 INFO L276 IsEmpty]: Start isEmpty. Operand 10460 states and 12511 transitions. [2020-10-14 04:12:23,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2020-10-14 04:12:23,429 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:12:23,429 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:12:23,430 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 04:12:23,430 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:12:23,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:12:23,430 INFO L82 PathProgramCache]: Analyzing trace with hash 1683742340, now seen corresponding path program 1 times [2020-10-14 04:12:23,431 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:12:23,431 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1450767947] [2020-10-14 04:12:23,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:12:23,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:12:23,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:12:23,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:12:24,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:12:24,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 257 [2020-10-14 04:12:24,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:12:24,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1206 [2020-10-14 04:12:24,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:12:24,714 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:12:24,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:12:24,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 185 [2020-10-14 04:12:24,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-14 04:12:24,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:12:24,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:12:24,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:12:24,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:12:24,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:12:24,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:12:24,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:12:24,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:12:24,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:12:24,821 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:12:24,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:12:24,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:12:24,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:12:24,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:12:24,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:12:24,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:12:24,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:12:24,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:12:24,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 04:12:24,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:12:24,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-14 04:12:24,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:12:24,882 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:12:24,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:12:24,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:12:24,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:12:24,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:12:24,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 04:12:24,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:12:24,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:12:25,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:12:25,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 04:12:25,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:12:25,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-14 04:12:25,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:12:25,012 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:12:25,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:12:25,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:12:25,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 04:12:25,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:12:25,095 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 131 proven. 2 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2020-10-14 04:12:25,095 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1450767947] [2020-10-14 04:12:25,096 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:12:25,096 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:12:25,096 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80476477] [2020-10-14 04:12:25,096 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:12:25,097 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:12:25,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:12:25,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:12:25,097 INFO L87 Difference]: Start difference. First operand 10460 states and 12511 transitions. Second operand 5 states. [2020-10-14 04:12:41,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:12:41,105 INFO L93 Difference]: Finished difference Result 21370 states and 25682 transitions. [2020-10-14 04:12:41,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:12:41,107 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 245 [2020-10-14 04:12:41,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:12:41,133 INFO L225 Difference]: With dead ends: 21370 [2020-10-14 04:12:41,133 INFO L226 Difference]: Without dead ends: 10916 [2020-10-14 04:12:41,147 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 04:12:41,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10916 states. [2020-10-14 04:12:41,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10916 to 10460. [2020-10-14 04:12:41,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10460 states. [2020-10-14 04:12:41,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10460 states to 10460 states and 12511 transitions. [2020-10-14 04:12:41,334 INFO L78 Accepts]: Start accepts. Automaton has 10460 states and 12511 transitions. Word has length 245 [2020-10-14 04:12:41,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:12:41,335 INFO L479 AbstractCegarLoop]: Abstraction has 10460 states and 12511 transitions. [2020-10-14 04:12:41,335 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:12:41,336 INFO L276 IsEmpty]: Start isEmpty. Operand 10460 states and 12511 transitions. [2020-10-14 04:12:41,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2020-10-14 04:12:41,343 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:12:41,343 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:12:41,344 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 04:12:41,344 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:12:41,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:12:41,344 INFO L82 PathProgramCache]: Analyzing trace with hash 930700541, now seen corresponding path program 1 times [2020-10-14 04:12:41,344 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:12:41,345 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1786424813] [2020-10-14 04:12:41,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:12:41,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:12:41,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:12:41,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:12:41,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:12:46,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:12:46,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:12:46,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:12:46,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 344 [2020-10-14 04:12:46,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 04:12:46,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-14 04:12:46,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:12:46,428 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:12:46,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:12:46,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 182 [2020-10-14 04:12:46,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-14 04:12:46,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:12:46,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:12:46,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:12:46,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:12:46,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:12:46,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:12:46,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:12:46,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:12:46,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:12:46,517 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:12:46,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:12:46,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:12:46,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:12:46,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:12:46,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:12:46,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:12:46,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:12:46,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:12:46,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 04:12:46,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:12:46,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-14 04:12:46,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:12:46,573 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:12:46,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:12:46,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:12:46,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:12:46,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:12:46,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 04:12:46,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:12:46,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:12:46,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:12:46,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-14 04:12:46,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:12:46,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-14 04:12:46,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:12:46,663 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:12:46,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:12:46,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:12:46,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-14 04:12:46,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:12:46,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-10-14 04:12:46,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:12:46,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:12:46,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:12:46,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-14 04:12:46,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:12:46,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 171 [2020-10-14 04:12:46,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:12:46,874 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:12:46,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:12:46,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:12:46,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-14 04:12:46,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:12:46,985 INFO L134 CoverageAnalysis]: Checked inductivity of 448 backedges. 364 proven. 2 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2020-10-14 04:12:46,985 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1786424813] [2020-10-14 04:12:46,985 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:12:46,986 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:12:46,986 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536604350] [2020-10-14 04:12:46,987 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:12:46,987 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:12:46,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:12:46,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:12:46,987 INFO L87 Difference]: Start difference. First operand 10460 states and 12511 transitions. Second operand 7 states. [2020-10-14 04:13:02,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:13:02,729 INFO L93 Difference]: Finished difference Result 24553 states and 29747 transitions. [2020-10-14 04:13:02,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 04:13:02,732 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 330 [2020-10-14 04:13:02,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:13:02,767 INFO L225 Difference]: With dead ends: 24553 [2020-10-14 04:13:02,767 INFO L226 Difference]: Without dead ends: 14099 [2020-10-14 04:13:02,786 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:13:02,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14099 states. [2020-10-14 04:13:03,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14099 to 13184. [2020-10-14 04:13:03,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13184 states. [2020-10-14 04:13:03,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13184 states to 13184 states and 15642 transitions. [2020-10-14 04:13:03,126 INFO L78 Accepts]: Start accepts. Automaton has 13184 states and 15642 transitions. Word has length 330 [2020-10-14 04:13:03,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:13:03,127 INFO L479 AbstractCegarLoop]: Abstraction has 13184 states and 15642 transitions. [2020-10-14 04:13:03,127 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:13:03,127 INFO L276 IsEmpty]: Start isEmpty. Operand 13184 states and 15642 transitions. [2020-10-14 04:13:03,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2020-10-14 04:13:03,138 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:13:03,138 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:13:03,138 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 04:13:03,139 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:13:03,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:13:03,139 INFO L82 PathProgramCache]: Analyzing trace with hash -1155444126, now seen corresponding path program 1 times [2020-10-14 04:13:03,139 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:13:03,140 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1984014982] [2020-10-14 04:13:03,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:13:03,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:13:03,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:13:03,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:13:04,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:13:04,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:13:05,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:13:05,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 370 [2020-10-14 04:13:05,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 04:13:05,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2746 [2020-10-14 04:13:05,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:13:05,959 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:13:05,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:13:05,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-14 04:13:05,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-14 04:13:05,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:13:06,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:13:06,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:13:06,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:13:06,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:13:06,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:13:06,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:13:06,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:13:06,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:13:06,041 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:13:06,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:13:06,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:13:06,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:13:06,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:13:06,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:13:06,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:13:06,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:13:06,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:13:06,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 04:13:06,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:13:06,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-14 04:13:06,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:13:06,135 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:13:06,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:13:06,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:13:06,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 04:13:06,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:13:06,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 04:13:06,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:13:06,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:13:06,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:13:06,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-14 04:13:06,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:13:06,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-14 04:13:06,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:13:06,300 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:13:06,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:13:06,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:13:06,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-14 04:13:06,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:13:06,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-14 04:13:06,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:13:06,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:13:06,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:13:06,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-14 04:13:06,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:13:06,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-14 04:13:06,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:13:06,459 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:13:06,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:13:06,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-14 04:13:06,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:13:06,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:13:06,601 INFO L134 CoverageAnalysis]: Checked inductivity of 457 backedges. 283 proven. 87 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2020-10-14 04:13:06,601 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1984014982] [2020-10-14 04:13:06,601 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:13:06,602 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:13:06,602 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680290155] [2020-10-14 04:13:06,603 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:13:06,603 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:13:06,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:13:06,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:13:06,604 INFO L87 Difference]: Start difference. First operand 13184 states and 15642 transitions. Second operand 7 states.