/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.1 --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/Problem02_label22.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 10:09:01,355 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 10:09:01,359 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 10:09:01,403 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 10:09:01,404 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 10:09:01,415 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 10:09:01,417 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 10:09:01,422 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 10:09:01,425 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 10:09:01,428 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 10:09:01,430 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 10:09:01,431 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 10:09:01,431 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 10:09:01,434 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 10:09:01,437 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 10:09:01,439 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 10:09:01,441 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 10:09:01,442 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 10:09:01,444 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 10:09:01,455 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 10:09:01,458 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 10:09:01,459 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 10:09:01,460 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 10:09:01,461 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 10:09:01,464 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 10:09:01,464 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 10:09:01,464 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 10:09:01,468 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 10:09:01,468 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 10:09:01,470 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 10:09:01,471 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 10:09:01,472 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 10:09:01,473 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 10:09:01,474 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 10:09:01,475 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 10:09:01,475 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 10:09:01,476 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 10:09:01,477 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 10:09:01,477 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 10:09:01,478 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 10:09:01,479 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 10:09:01,480 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 10:09:01,532 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 10:09:01,532 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 10:09:01,535 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 10:09:01,535 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 10:09:01,535 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 10:09:01,536 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 10:09:01,536 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 10:09:01,536 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 10:09:01,537 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 10:09:01,537 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 10:09:01,538 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 10:09:01,538 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 10:09:01,539 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 10:09:01,539 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 10:09:01,539 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 10:09:01,540 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 10:09:01,540 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 10:09:01,540 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 10:09:01,540 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 10:09:01,540 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 10:09:01,541 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 10:09:01,541 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 10:09:01,541 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 10:09:01,541 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 10:09:01,542 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 10:09:01,542 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 10:09:01,542 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 10:09:01,542 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 10:09:01,542 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 10:09:01,543 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=SMALLESTAMONGWIDE;tolerance=0.1;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=SMALLESTAMONGWIDE;tolerance=0.1;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=SMALLESTAMONGWIDE;tolerance=0.1;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=SMALLESTAMONGWIDE;tolerance=0.1;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=SMALLESTAMONGWIDE;tolerance=0.1;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=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; [2020-09-25 10:09:02,015 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 10:09:02,041 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 10:09:02,046 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 10:09:02,048 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 10:09:02,049 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 10:09:02,050 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label22.c [2020-09-25 10:09:02,148 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7e2c25c42/2836500d41c24545b75412f04cbd4d50/FLAGf2dc3a5fd [2020-09-25 10:09:02,794 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 10:09:02,795 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label22.c [2020-09-25 10:09:02,809 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7e2c25c42/2836500d41c24545b75412f04cbd4d50/FLAGf2dc3a5fd [2020-09-25 10:09:03,056 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7e2c25c42/2836500d41c24545b75412f04cbd4d50 [2020-09-25 10:09:03,071 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 10:09:03,077 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 10:09:03,079 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 10:09:03,079 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 10:09:03,084 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 10:09:03,085 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:09:03" (1/1) ... [2020-09-25 10:09:03,090 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55e164ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:09:03, skipping insertion in model container [2020-09-25 10:09:03,090 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:09:03" (1/1) ... [2020-09-25 10:09:03,099 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 10:09:03,164 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 10:09:03,752 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:09:03,759 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 10:09:03,996 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:09:04,016 INFO L208 MainTranslator]: Completed translation [2020-09-25 10:09:04,017 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:09:04 WrapperNode [2020-09-25 10:09:04,017 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 10:09:04,018 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 10:09:04,018 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 10:09:04,019 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 10:09:04,038 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:09:04" (1/1) ... [2020-09-25 10:09:04,038 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:09:04" (1/1) ... [2020-09-25 10:09:04,057 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:09:04" (1/1) ... [2020-09-25 10:09:04,058 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:09:04" (1/1) ... [2020-09-25 10:09:04,096 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:09:04" (1/1) ... [2020-09-25 10:09:04,129 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:09:04" (1/1) ... [2020-09-25 10:09:04,142 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:09:04" (1/1) ... [2020-09-25 10:09:04,161 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 10:09:04,163 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 10:09:04,163 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 10:09:04,163 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 10:09:04,165 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:09:04" (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 10:09:04,272 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 10:09:04,273 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 10:09:04,273 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 10:09:04,273 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 10:09:04,273 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 10:09:04,274 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 10:09:04,274 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 10:09:04,275 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 10:09:04,275 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 10:09:04,275 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 10:09:04,276 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 10:09:05,640 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 10:09:05,641 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 10:09:05,650 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:09:05 BoogieIcfgContainer [2020-09-25 10:09:05,650 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 10:09:05,652 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 10:09:05,652 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 10:09:05,656 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 10:09:05,656 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 10:09:03" (1/3) ... [2020-09-25 10:09:05,657 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c1c64d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:09:05, skipping insertion in model container [2020-09-25 10:09:05,658 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:09:04" (2/3) ... [2020-09-25 10:09:05,658 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c1c64d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:09:05, skipping insertion in model container [2020-09-25 10:09:05,658 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:09:05" (3/3) ... [2020-09-25 10:09:05,661 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label22.c [2020-09-25 10:09:05,672 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 10:09:05,684 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 10:09:05,706 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 10:09:05,742 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 10:09:05,742 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 10:09:05,743 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 10:09:05,743 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 10:09:05,743 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 10:09:05,743 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 10:09:05,743 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 10:09:05,743 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 10:09:05,775 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 10:09:05,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-09-25 10:09:05,794 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:09:05,796 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] [2020-09-25 10:09:05,796 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:09:05,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:09:05,804 INFO L82 PathProgramCache]: Analyzing trace with hash -1564262750, now seen corresponding path program 1 times [2020-09-25 10:09:05,815 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:09:05,815 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1400466314] [2020-09-25 10:09:05,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:09:06,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:09:06,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:06,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:07,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:08,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:08,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:08,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:10,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:10,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:11,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:09:11,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-09-25 10:09:11,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 10:09:11,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-09-25 10:09:11,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:09:11,140 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:09:11,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:09:11,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 10:09:11,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-09-25 10:09:11,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-09-25 10:09:11,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:09:11,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:09:11,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:11,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:09:11,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:09:11,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:09:11,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-25 10:09:11,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:09:11,414 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:09:11,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:09:11,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:09:11,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 10:09:11,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:09:11,476 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 10:09:11,477 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1400466314] [2020-09-25 10:09:11,480 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:09:11,480 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 10:09:11,481 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623010733] [2020-09-25 10:09:11,489 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 10:09:11,490 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:09:11,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 10:09:11,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 10:09:11,511 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 10:09:13,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:09:13,668 INFO L93 Difference]: Finished difference Result 1205 states and 1651 transitions. [2020-09-25 10:09:13,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 10:09:13,674 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 123 [2020-09-25 10:09:13,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:09:13,713 INFO L225 Difference]: With dead ends: 1205 [2020-09-25 10:09:13,713 INFO L226 Difference]: Without dead ends: 627 [2020-09-25 10:09:13,722 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 10:09:13,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 627 states. [2020-09-25 10:09:13,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 627 to 613. [2020-09-25 10:09:13,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 613 states. [2020-09-25 10:09:13,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613 states to 613 states and 759 transitions. [2020-09-25 10:09:13,825 INFO L78 Accepts]: Start accepts. Automaton has 613 states and 759 transitions. Word has length 123 [2020-09-25 10:09:13,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:09:13,827 INFO L479 AbstractCegarLoop]: Abstraction has 613 states and 759 transitions. [2020-09-25 10:09:13,827 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 10:09:13,827 INFO L276 IsEmpty]: Start isEmpty. Operand 613 states and 759 transitions. [2020-09-25 10:09:13,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-09-25 10:09:13,835 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:09:13,835 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:09:13,836 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 10:09:13,836 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:09:13,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:09:13,836 INFO L82 PathProgramCache]: Analyzing trace with hash -750015737, now seen corresponding path program 1 times [2020-09-25 10:09:13,837 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:09:13,837 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [74356076] [2020-09-25 10:09:13,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:09:13,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:09:13,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:14,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:14,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:14,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:14,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:15,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:15,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:18,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:09:18,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-09-25 10:09:18,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 10:09:18,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4148 [2020-09-25 10:09:18,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:09:18,025 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:09:18,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 10:09:18,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 10:09:18,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-09-25 10:09:18,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:09:18,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:09:18,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:09:18,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:18,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:09:18,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:09:18,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:09:18,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 10:09:18,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:09:18,253 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:09:18,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:09:18,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:09:18,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 10:09:18,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:09:18,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 10:09:18,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:09:18,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:18,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:18,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:09:18,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 10:09:18,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:09:18,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-09-25 10:09:18,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:09:18,426 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:09:18,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 10:09:18,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:09:18,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 10:09:18,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:09:18,636 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:09:18,636 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [74356076] [2020-09-25 10:09:18,637 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:09:18,637 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 10:09:18,637 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434608212] [2020-09-25 10:09:18,640 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 10:09:18,640 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:09:18,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 10:09:18,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-09-25 10:09:18,641 INFO L87 Difference]: Start difference. First operand 613 states and 759 transitions. Second operand 11 states. [2020-09-25 10:09:19,552 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 62 [2020-09-25 10:09:21,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:09:21,839 INFO L93 Difference]: Finished difference Result 1381 states and 1829 transitions. [2020-09-25 10:09:21,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 10:09:21,840 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 157 [2020-09-25 10:09:21,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:09:21,845 INFO L225 Difference]: With dead ends: 1381 [2020-09-25 10:09:21,846 INFO L226 Difference]: Without dead ends: 689 [2020-09-25 10:09:21,850 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=123, Invalid=257, Unknown=0, NotChecked=0, Total=380 [2020-09-25 10:09:21,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 689 states. [2020-09-25 10:09:21,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 689 to 521. [2020-09-25 10:09:21,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 521 states. [2020-09-25 10:09:21,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 521 states to 521 states and 585 transitions. [2020-09-25 10:09:21,876 INFO L78 Accepts]: Start accepts. Automaton has 521 states and 585 transitions. Word has length 157 [2020-09-25 10:09:21,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:09:21,877 INFO L479 AbstractCegarLoop]: Abstraction has 521 states and 585 transitions. [2020-09-25 10:09:21,877 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 10:09:21,877 INFO L276 IsEmpty]: Start isEmpty. Operand 521 states and 585 transitions. [2020-09-25 10:09:21,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-09-25 10:09:21,880 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:09:21,880 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:09:21,881 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 10:09:21,881 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:09:21,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:09:21,881 INFO L82 PathProgramCache]: Analyzing trace with hash -1182522790, now seen corresponding path program 1 times [2020-09-25 10:09:21,882 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:09:21,882 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [222163151] [2020-09-25 10:09:21,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:09:21,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:09:21,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:22,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:22,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:22,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:24,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:24,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:25,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:25,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:26,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:09:26,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-09-25 10:09:26,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 10:09:26,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-25 10:09:26,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:09:26,938 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:09:26,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 10:09:26,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 10:09:26,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 145 [2020-09-25 10:09:26,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 10:09:27,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:09:27,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:09:27,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:27,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:09:27,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:09:27,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:09:27,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 10:09:27,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:09:27,299 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:09:27,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:09:27,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:09:27,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 10:09:27,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:09:27,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 10:09:27,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:09:27,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:27,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:27,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:09:27,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 10:09:27,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:09:27,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 170 [2020-09-25 10:09:27,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:09:27,518 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:09:27,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:09:27,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:09:27,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 10:09:27,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 10:09:27,844 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 26 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:09:27,844 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [222163151] [2020-09-25 10:09:27,845 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:09:27,845 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 10:09:27,846 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716766951] [2020-09-25 10:09:27,847 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 10:09:27,847 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:09:27,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 10:09:27,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2020-09-25 10:09:27,848 INFO L87 Difference]: Start difference. First operand 521 states and 585 transitions. Second operand 11 states. [2020-09-25 10:09:30,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:09:30,549 INFO L93 Difference]: Finished difference Result 939 states and 1010 transitions. [2020-09-25 10:09:30,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 10:09:30,549 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 161 [2020-09-25 10:09:30,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:09:30,553 INFO L225 Difference]: With dead ends: 939 [2020-09-25 10:09:30,554 INFO L226 Difference]: Without dead ends: 514 [2020-09-25 10:09:30,556 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=119, Invalid=223, Unknown=0, NotChecked=0, Total=342 [2020-09-25 10:09:30,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2020-09-25 10:09:30,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 500. [2020-09-25 10:09:30,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 500 states. [2020-09-25 10:09:30,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 560 transitions. [2020-09-25 10:09:30,575 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 560 transitions. Word has length 161 [2020-09-25 10:09:30,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:09:30,576 INFO L479 AbstractCegarLoop]: Abstraction has 500 states and 560 transitions. [2020-09-25 10:09:30,576 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 10:09:30,576 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 560 transitions. [2020-09-25 10:09:30,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-09-25 10:09:30,580 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:09:30,580 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:09:30,580 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 10:09:30,580 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:09:30,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:09:30,588 INFO L82 PathProgramCache]: Analyzing trace with hash 1500049482, now seen corresponding path program 1 times [2020-09-25 10:09:30,589 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:09:30,589 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1217375486] [2020-09-25 10:09:30,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:09:30,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:09:30,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:30,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:30,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:31,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:31,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:34,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:34,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:35,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:09:35,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 195 [2020-09-25 10:09:35,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 10:09:35,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 10:09:35,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:09:35,643 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:09:35,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 10:09:35,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 10:09:35,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 160 [2020-09-25 10:09:35,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:09:35,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:09:35,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:09:35,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:35,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:09:35,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:09:35,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:09:35,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-25 10:09:35,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:09:35,927 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:09:35,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:09:35,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:09:35,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 10:09:35,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:09:35,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 10:09:35,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:09:35,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:36,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:36,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:09:36,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-09-25 10:09:36,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:09:36,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 250 [2020-09-25 10:09:36,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:09:36,218 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:09:36,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 10:09:36,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:09:36,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-09-25 10:09:36,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:09:36,453 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 49 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:09:36,453 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1217375486] [2020-09-25 10:09:36,453 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:09:36,453 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 10:09:36,454 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086533066] [2020-09-25 10:09:36,454 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 10:09:36,455 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:09:36,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 10:09:36,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-09-25 10:09:36,455 INFO L87 Difference]: Start difference. First operand 500 states and 560 transitions. Second operand 10 states. [2020-09-25 10:09:39,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:09:39,937 INFO L93 Difference]: Finished difference Result 1562 states and 1867 transitions. [2020-09-25 10:09:39,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 10:09:39,937 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 184 [2020-09-25 10:09:39,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:09:39,944 INFO L225 Difference]: With dead ends: 1562 [2020-09-25 10:09:39,944 INFO L226 Difference]: Without dead ends: 828 [2020-09-25 10:09:39,946 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=79, Invalid=131, Unknown=0, NotChecked=0, Total=210 [2020-09-25 10:09:39,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 828 states. [2020-09-25 10:09:39,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 828 to 804. [2020-09-25 10:09:39,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 804 states. [2020-09-25 10:09:39,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 804 states to 804 states and 878 transitions. [2020-09-25 10:09:39,974 INFO L78 Accepts]: Start accepts. Automaton has 804 states and 878 transitions. Word has length 184 [2020-09-25 10:09:39,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:09:39,974 INFO L479 AbstractCegarLoop]: Abstraction has 804 states and 878 transitions. [2020-09-25 10:09:39,975 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 10:09:39,975 INFO L276 IsEmpty]: Start isEmpty. Operand 804 states and 878 transitions. [2020-09-25 10:09:39,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-09-25 10:09:39,979 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:09:39,979 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, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:09:39,980 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 10:09:39,980 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:09:39,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:09:39,980 INFO L82 PathProgramCache]: Analyzing trace with hash -1747648367, now seen corresponding path program 1 times [2020-09-25 10:09:39,981 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:09:39,981 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [251228122] [2020-09-25 10:09:39,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:09:40,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:09:40,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:40,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:40,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:40,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:41,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:43,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:44,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:44,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:45,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:09:45,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 215 [2020-09-25 10:09:45,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 10:09:45,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-09-25 10:09:45,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:09:45,059 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:09:45,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-25 10:09:45,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 10:09:45,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 197 [2020-09-25 10:09:45,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 10:09:45,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:09:45,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:09:45,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:45,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:09:45,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:09:45,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:09:45,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-09-25 10:09:45,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:09:45,488 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:09:45,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:09:45,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:09:45,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 10:09:45,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:09:45,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 10:09:45,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:09:45,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:45,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:46,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:09:46,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-09-25 10:09:46,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:09:46,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 621 [2020-09-25 10:09:46,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:09:46,254 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:09:46,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:09:46,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:09:46,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 10:09:46,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:09:46,452 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:09:46,453 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [251228122] [2020-09-25 10:09:46,453 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:09:46,453 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 10:09:46,453 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554134360] [2020-09-25 10:09:46,454 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 10:09:46,454 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:09:46,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 10:09:46,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-09-25 10:09:46,455 INFO L87 Difference]: Start difference. First operand 804 states and 878 transitions. Second operand 13 states.