/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 SingleStatement --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=0.2 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label55.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 04:26:01,535 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 04:26:01,541 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 04:26:01,585 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 04:26:01,586 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 04:26:01,597 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 04:26:01,600 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 04:26:01,603 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 04:26:01,606 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 04:26:01,609 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 04:26:01,610 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 04:26:01,612 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 04:26:01,612 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 04:26:01,615 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 04:26:01,618 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 04:26:01,619 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 04:26:01,621 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 04:26:01,622 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 04:26:01,623 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 04:26:01,631 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 04:26:01,634 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 04:26:01,635 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 04:26:01,636 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 04:26:01,636 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 04:26:01,641 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 04:26:01,642 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 04:26:01,642 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 04:26:01,645 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 04:26:01,646 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 04:26:01,647 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 04:26:01,647 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 04:26:01,648 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 04:26:01,649 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 04:26:01,649 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 04:26:01,650 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 04:26:01,651 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 04:26:01,651 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 04:26:01,652 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 04:26:01,652 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 04:26:01,653 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 04:26:01,654 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 04:26:01,655 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 [2020-09-25 04:26:01,705 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 04:26:01,705 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 04:26:01,707 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 04:26:01,707 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 04:26:01,708 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 04:26:01,708 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 04:26:01,708 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 04:26:01,709 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 04:26:01,709 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 04:26:01,709 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 04:26:01,710 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 04:26:01,710 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 04:26:01,710 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 04:26:01,711 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 04:26:01,711 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 04:26:01,711 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 04:26:01,711 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 04:26:01,712 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 04:26:01,712 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 04:26:01,712 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 04:26:01,712 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 04:26:01,712 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 04:26:01,713 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 04:26:01,713 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 04:26:01,713 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 04:26:01,713 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 04:26:01,713 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 04:26:01,714 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 04:26:01,714 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 04:26:01,714 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 -> SingleStatement 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=0.2;log-additional-information=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=0.2;log-additional-information=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=0.2;log-additional-information=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=0.2;log-additional-information=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=0.2;log-additional-information=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=0.2;log-additional-information=true; [2020-09-25 04:26:02,172 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 04:26:02,199 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 04:26:02,206 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 04:26:02,208 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 04:26:02,209 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 04:26:02,210 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label55.c [2020-09-25 04:26:02,306 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c143d7062/0ee83ceb0f0d47c1a07de64876e5e876/FLAG3bc5a14bb [2020-09-25 04:26:02,991 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 04:26:02,992 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label55.c [2020-09-25 04:26:03,006 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c143d7062/0ee83ceb0f0d47c1a07de64876e5e876/FLAG3bc5a14bb [2020-09-25 04:26:03,199 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c143d7062/0ee83ceb0f0d47c1a07de64876e5e876 [2020-09-25 04:26:03,212 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 04:26:03,221 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 04:26:03,222 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 04:26:03,222 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 04:26:03,228 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 04:26:03,229 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:26:03" (1/1) ... [2020-09-25 04:26:03,235 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f80c2a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:26:03, skipping insertion in model container [2020-09-25 04:26:03,235 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:26:03" (1/1) ... [2020-09-25 04:26:03,245 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 04:26:03,302 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 04:26:03,743 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:26:03,750 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 04:26:03,965 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:26:03,985 INFO L208 MainTranslator]: Completed translation [2020-09-25 04:26:03,986 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:26:03 WrapperNode [2020-09-25 04:26:03,986 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 04:26:03,987 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 04:26:03,987 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 04:26:03,987 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 04:26:04,006 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:26:03" (1/1) ... [2020-09-25 04:26:04,006 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:26:03" (1/1) ... [2020-09-25 04:26:04,026 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:26:03" (1/1) ... [2020-09-25 04:26:04,026 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:26:03" (1/1) ... [2020-09-25 04:26:04,080 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:26:03" (1/1) ... [2020-09-25 04:26:04,091 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:26:03" (1/1) ... [2020-09-25 04:26:04,098 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:26:03" (1/1) ... [2020-09-25 04:26:04,107 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 04:26:04,108 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 04:26:04,108 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 04:26:04,108 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 04:26:04,109 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:26:03" (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 [2020-09-25 04:26:04,189 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 04:26:04,189 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 04:26:04,189 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 04:26:04,190 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 04:26:04,190 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 04:26:04,190 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 04:26:04,190 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 04:26:04,191 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 04:26:04,191 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 04:26:04,191 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 04:26:04,191 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 04:26:05,555 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 04:26:05,555 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 04:26:05,565 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:26:05 BoogieIcfgContainer [2020-09-25 04:26:05,566 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 04:26:05,567 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 04:26:05,567 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 04:26:05,571 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 04:26:05,572 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 04:26:03" (1/3) ... [2020-09-25 04:26:05,573 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e9e9bc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:26:05, skipping insertion in model container [2020-09-25 04:26:05,573 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:26:03" (2/3) ... [2020-09-25 04:26:05,573 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e9e9bc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:26:05, skipping insertion in model container [2020-09-25 04:26:05,574 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:26:05" (3/3) ... [2020-09-25 04:26:05,576 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label55.c [2020-09-25 04:26:05,588 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 04:26:05,600 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 04:26:05,624 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 04:26:05,661 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 04:26:05,661 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 04:26:05,662 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 04:26:05,662 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 04:26:05,662 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 04:26:05,662 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 04:26:05,662 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 04:26:05,663 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 04:26:05,696 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 04:26:05,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-09-25 04:26:05,717 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:26:05,719 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:26:05,719 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:26:05,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:26:05,729 INFO L82 PathProgramCache]: Analyzing trace with hash -2144769179, now seen corresponding path program 1 times [2020-09-25 04:26:05,742 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:26:05,743 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1251981973] [2020-09-25 04:26:05,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:26:06,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:06,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:06,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:07,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:07,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:10,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:11,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:11,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-09-25 04:26:11,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 04:26:11,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-09-25 04:26:11,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:11,068 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:11,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:26:11,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 04:26:11,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-09-25 04:26:11,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-09-25 04:26:11,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:26:11,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:11,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:11,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:11,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 04:26:11,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:26:11,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-25 04:26:11,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:11,333 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:11,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:26:11,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:26:11,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 04:26:11,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:26:11,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:26:11,402 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1251981973] [2020-09-25 04:26:11,404 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:26:11,404 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 04:26:11,405 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368325651] [2020-09-25 04:26:11,412 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:26:11,413 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:26:11,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:26:11,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:26:11,437 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 5 states. [2020-09-25 04:26:13,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:26:13,695 INFO L93 Difference]: Finished difference Result 1270 states and 1669 transitions. [2020-09-25 04:26:13,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 04:26:13,697 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 139 [2020-09-25 04:26:13,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:26:13,723 INFO L225 Difference]: With dead ends: 1270 [2020-09-25 04:26:13,724 INFO L226 Difference]: Without dead ends: 696 [2020-09-25 04:26:13,735 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:26:13,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2020-09-25 04:26:13,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 603. [2020-09-25 04:26:13,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2020-09-25 04:26:13,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 731 transitions. [2020-09-25 04:26:13,847 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 731 transitions. Word has length 139 [2020-09-25 04:26:13,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:26:13,848 INFO L479 AbstractCegarLoop]: Abstraction has 603 states and 731 transitions. [2020-09-25 04:26:13,849 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:26:13,849 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 731 transitions. [2020-09-25 04:26:13,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-09-25 04:26:13,857 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:26:13,858 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:26:13,858 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 04:26:13,858 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:26:13,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:26:13,859 INFO L82 PathProgramCache]: Analyzing trace with hash 473875351, now seen corresponding path program 1 times [2020-09-25 04:26:13,859 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:26:13,860 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1566548232] [2020-09-25 04:26:13,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:26:13,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:13,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:14,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:14,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:14,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:14,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:16,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:16,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:16,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:17,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:18,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:18,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-09-25 04:26:18,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 04:26:18,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-09-25 04:26:18,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:18,904 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:18,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:26:18,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-09-25 04:26:18,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-09-25 04:26:18,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:26:19,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:26:19,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:19,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:19,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:19,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 04:26:19,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:26:19,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 04:26:19,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:19,111 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:19,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:26:19,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:26:19,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:26:19,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-09-25 04:26:19,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 04:26:19,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:19,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:19,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:19,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:26:19,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:26:19,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 04:26:19,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:19,178 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:19,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:26:19,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:26:19,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 04:26:19,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:26:19,217 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:26:19,217 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1566548232] [2020-09-25 04:26:19,218 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:26:19,218 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:26:19,218 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421173027] [2020-09-25 04:26:19,222 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:26:19,222 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:26:19,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:26:19,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:26:19,223 INFO L87 Difference]: Start difference. First operand 603 states and 731 transitions. Second operand 5 states. [2020-09-25 04:26:21,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:26:21,625 INFO L93 Difference]: Finished difference Result 1597 states and 2001 transitions. [2020-09-25 04:26:21,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:26:21,628 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 161 [2020-09-25 04:26:21,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:26:21,636 INFO L225 Difference]: With dead ends: 1597 [2020-09-25 04:26:21,636 INFO L226 Difference]: Without dead ends: 1018 [2020-09-25 04:26:21,639 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 [2020-09-25 04:26:21,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1018 states. [2020-09-25 04:26:21,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1018 to 758. [2020-09-25 04:26:21,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 758 states. [2020-09-25 04:26:21,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 758 states to 758 states and 933 transitions. [2020-09-25 04:26:21,686 INFO L78 Accepts]: Start accepts. Automaton has 758 states and 933 transitions. Word has length 161 [2020-09-25 04:26:21,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:26:21,688 INFO L479 AbstractCegarLoop]: Abstraction has 758 states and 933 transitions. [2020-09-25 04:26:21,688 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:26:21,688 INFO L276 IsEmpty]: Start isEmpty. Operand 758 states and 933 transitions. [2020-09-25 04:26:21,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-09-25 04:26:21,699 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:26:21,700 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:26:21,700 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 04:26:21,700 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:26:21,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:26:21,701 INFO L82 PathProgramCache]: Analyzing trace with hash -1701451615, now seen corresponding path program 1 times [2020-09-25 04:26:21,701 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:26:21,701 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [99120317] [2020-09-25 04:26:21,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:26:21,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:21,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:21,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:22,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:23,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:23,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:24,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:25,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:26,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:26,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-09-25 04:26:26,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 04:26:26,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-09-25 04:26:26,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:26,761 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:26,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:26:26,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 04:26:26,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-25 04:26:26,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:26:26,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:26:26,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:26,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:26,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:26,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 04:26:26,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:26:26,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 04:26:26,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:26,906 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:26,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:26:26,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:26:26,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 04:26:26,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 04:26:26,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 04:26:26,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:26,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:27,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:27,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 04:26:27,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:26:27,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-09-25 04:26:27,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:27,045 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:27,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:26:27,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 04:26:27,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 04:26:27,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:26:27,129 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:26:27,130 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [99120317] [2020-09-25 04:26:27,130 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:26:27,131 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 04:26:27,131 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532892402] [2020-09-25 04:26:27,133 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:26:27,134 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:26:27,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:26:27,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:26:27,135 INFO L87 Difference]: Start difference. First operand 758 states and 933 transitions. Second operand 7 states. [2020-09-25 04:26:29,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:26:29,310 INFO L93 Difference]: Finished difference Result 1633 states and 2009 transitions. [2020-09-25 04:26:29,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 04:26:29,311 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 176 [2020-09-25 04:26:29,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:26:29,318 INFO L225 Difference]: With dead ends: 1633 [2020-09-25 04:26:29,319 INFO L226 Difference]: Without dead ends: 899 [2020-09-25 04:26:29,326 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 04:26:29,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 899 states. [2020-09-25 04:26:29,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 899 to 812. [2020-09-25 04:26:29,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 812 states. [2020-09-25 04:26:29,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 812 states to 812 states and 948 transitions. [2020-09-25 04:26:29,375 INFO L78 Accepts]: Start accepts. Automaton has 812 states and 948 transitions. Word has length 176 [2020-09-25 04:26:29,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:26:29,375 INFO L479 AbstractCegarLoop]: Abstraction has 812 states and 948 transitions. [2020-09-25 04:26:29,375 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 04:26:29,375 INFO L276 IsEmpty]: Start isEmpty. Operand 812 states and 948 transitions. [2020-09-25 04:26:29,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-09-25 04:26:29,379 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:26:29,380 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:26:29,381 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 04:26:29,381 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:26:29,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:26:29,383 INFO L82 PathProgramCache]: Analyzing trace with hash 1190688682, now seen corresponding path program 1 times [2020-09-25 04:26:29,384 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:26:29,384 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [4025003] [2020-09-25 04:26:29,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:26:29,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:29,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:29,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:29,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:30,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:34,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:34,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:34,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 193 [2020-09-25 04:26:34,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 04:26:34,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 04:26:34,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:34,413 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:34,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:26:34,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 04:26:34,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-09-25 04:26:34,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:26:34,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:26:34,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:34,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:34,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:34,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 04:26:34,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:26:34,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 04:26:34,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:34,536 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:34,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:26:34,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:26:34,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 04:26:34,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:26:34,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 04:26:34,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:34,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:34,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:34,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-25 04:26:34,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:26:34,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-09-25 04:26:34,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:34,677 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:34,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:26:34,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 04:26:34,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 04:26:34,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:26:34,769 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:26:34,771 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [4025003] [2020-09-25 04:26:34,771 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:26:34,771 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 04:26:34,772 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506106797] [2020-09-25 04:26:34,775 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 04:26:34,775 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:26:34,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 04:26:34,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 04:26:34,777 INFO L87 Difference]: Start difference. First operand 812 states and 948 transitions. Second operand 8 states. [2020-09-25 04:26:37,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:26:37,665 INFO L93 Difference]: Finished difference Result 2545 states and 3134 transitions. [2020-09-25 04:26:37,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 04:26:37,666 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 182 [2020-09-25 04:26:37,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:26:37,675 INFO L225 Difference]: With dead ends: 2545 [2020-09-25 04:26:37,675 INFO L226 Difference]: Without dead ends: 1757 [2020-09-25 04:26:37,679 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-09-25 04:26:37,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1757 states. [2020-09-25 04:26:37,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1757 to 1610. [2020-09-25 04:26:37,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1610 states. [2020-09-25 04:26:37,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1610 states to 1610 states and 1903 transitions. [2020-09-25 04:26:37,741 INFO L78 Accepts]: Start accepts. Automaton has 1610 states and 1903 transitions. Word has length 182 [2020-09-25 04:26:37,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:26:37,741 INFO L479 AbstractCegarLoop]: Abstraction has 1610 states and 1903 transitions. [2020-09-25 04:26:37,741 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 04:26:37,741 INFO L276 IsEmpty]: Start isEmpty. Operand 1610 states and 1903 transitions. [2020-09-25 04:26:37,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2020-09-25 04:26:37,750 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:26:37,750 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:26:37,750 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 04:26:37,750 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:26:37,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:26:37,751 INFO L82 PathProgramCache]: Analyzing trace with hash -318750663, now seen corresponding path program 1 times [2020-09-25 04:26:37,751 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:26:37,752 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [452447677] [2020-09-25 04:26:37,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:26:37,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:37,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:37,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:38,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:38,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:40,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:41,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:42,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:42,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:42,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-09-25 04:26:42,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 04:26:42,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 04:26:42,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:42,789 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:42,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:26:42,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 04:26:42,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 04:26:42,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:26:42,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:26:42,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:42,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:42,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:42,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 04:26:42,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:26:42,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 04:26:42,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:42,887 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:42,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:26:42,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:26:42,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:26:42,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:26:42,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 04:26:42,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:42,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:42,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:42,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 04:26:42,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:26:42,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 04:26:42,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:42,933 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:42,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:26:42,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:26:42,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 04:26:42,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:26:42,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 04:26:42,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:42,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:43,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:43,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-25 04:26:43,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:26:43,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-09-25 04:26:43,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:43,038 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:43,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:26:43,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 04:26:43,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 04:26:43,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:26:43,110 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 57 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 04:26:43,111 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [452447677] [2020-09-25 04:26:43,111 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:26:43,111 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 04:26:43,111 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050164795] [2020-09-25 04:26:43,112 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:26:43,112 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:26:43,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:26:43,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:26:43,113 INFO L87 Difference]: Start difference. First operand 1610 states and 1903 transitions. Second operand 7 states. [2020-09-25 04:26:45,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:26:45,380 INFO L93 Difference]: Finished difference Result 3640 states and 4437 transitions. [2020-09-25 04:26:45,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 04:26:45,381 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 203 [2020-09-25 04:26:45,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:26:45,396 INFO L225 Difference]: With dead ends: 3640 [2020-09-25 04:26:45,396 INFO L226 Difference]: Without dead ends: 2054 [2020-09-25 04:26:45,403 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 04:26:45,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2054 states. [2020-09-25 04:26:45,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2054 to 1940. [2020-09-25 04:26:45,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1940 states. [2020-09-25 04:26:45,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1940 states to 1940 states and 2304 transitions. [2020-09-25 04:26:45,506 INFO L78 Accepts]: Start accepts. Automaton has 1940 states and 2304 transitions. Word has length 203 [2020-09-25 04:26:45,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:26:45,506 INFO L479 AbstractCegarLoop]: Abstraction has 1940 states and 2304 transitions. [2020-09-25 04:26:45,506 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 04:26:45,507 INFO L276 IsEmpty]: Start isEmpty. Operand 1940 states and 2304 transitions. [2020-09-25 04:26:45,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2020-09-25 04:26:45,515 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:26:45,515 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:26:45,515 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 04:26:45,516 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:26:45,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:26:45,516 INFO L82 PathProgramCache]: Analyzing trace with hash -914003078, now seen corresponding path program 1 times [2020-09-25 04:26:45,516 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:26:45,516 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [338289502] [2020-09-25 04:26:45,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:26:45,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:45,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:45,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:45,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:45,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:46,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:50,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:50,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:50,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 223 [2020-09-25 04:26:50,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 04:26:50,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5233 [2020-09-25 04:26:50,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:50,785 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:50,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 04:26:50,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-09-25 04:26:50,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-25 04:26:50,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:26:50,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:26:50,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:50,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:50,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:50,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 04:26:50,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:26:50,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 04:26:50,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:50,916 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:50,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:26:50,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:26:50,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:26:50,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:26:50,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 04:26:50,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:50,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:50,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:50,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 04:26:50,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:26:50,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-25 04:26:50,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:50,981 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:50,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 04:26:50,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:26:50,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 04:26:50,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:26:50,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-25 04:26:51,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:51,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:51,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:51,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-25 04:26:51,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:26:51,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-09-25 04:26:51,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:51,077 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:51,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:26:51,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 04:26:51,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 04:26:51,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:26:51,172 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 65 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 04:26:51,173 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [338289502] [2020-09-25 04:26:51,173 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:26:51,173 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 04:26:51,173 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748885805] [2020-09-25 04:26:51,174 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 04:26:51,174 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:26:51,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 04:26:51,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 04:26:51,175 INFO L87 Difference]: Start difference. First operand 1940 states and 2304 transitions. Second operand 8 states. [2020-09-25 04:26:51,737 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 63