/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label11.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 22:25:51,499 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 22:25:51,502 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 22:25:51,525 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 22:25:51,525 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 22:25:51,527 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 22:25:51,528 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 22:25:51,530 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 22:25:51,531 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 22:25:51,532 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 22:25:51,533 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 22:25:51,534 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 22:25:51,535 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 22:25:51,536 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 22:25:51,537 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 22:25:51,538 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 22:25:51,538 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 22:25:51,539 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 22:25:51,541 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 22:25:51,542 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 22:25:51,544 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 22:25:51,548 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 22:25:51,549 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 22:25:51,550 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 22:25:51,552 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 22:25:51,552 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 22:25:51,553 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 22:25:51,554 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 22:25:51,554 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 22:25:51,555 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 22:25:51,555 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 22:25:51,556 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 22:25:51,557 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 22:25:51,557 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 22:25:51,558 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 22:25:51,558 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 22:25:51,559 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 22:25:51,559 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 22:25:51,559 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 22:25:51,560 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 22:25:51,561 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 22:25:51,562 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 22:25:51,584 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 22:25:51,585 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 22:25:51,586 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 22:25:51,586 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 22:25:51,587 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 22:25:51,587 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 22:25:51,587 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 22:25:51,587 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 22:25:51,588 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 22:25:51,588 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 22:25:51,588 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 22:25:51,588 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 22:25:51,588 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 22:25:51,589 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 22:25:51,589 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 22:25:51,589 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 22:25:51,589 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 22:25:51,589 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 22:25:51,590 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 22:25:51,590 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 22:25:51,590 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 22:25:51,590 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 22:25:51,590 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 22:25:51,591 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 22:25:51,591 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 22:25:51,591 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 22:25:51,591 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 22:25:51,591 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 22:25:51,591 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 22:25:51,592 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 22:25:51,913 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 22:25:51,926 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 22:25:51,930 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 22:25:51,931 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 22:25:51,932 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 22:25:51,933 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label11.c [2020-10-14 22:25:51,999 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cbd384ce6/15870ddc505e48e0a5a16b79b8e31a0a/FLAGa7dfe98de [2020-10-14 22:25:52,705 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 22:25:52,706 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem17_label11.c [2020-10-14 22:25:52,727 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cbd384ce6/15870ddc505e48e0a5a16b79b8e31a0a/FLAGa7dfe98de [2020-10-14 22:25:52,771 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cbd384ce6/15870ddc505e48e0a5a16b79b8e31a0a [2020-10-14 22:25:52,782 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 22:25:52,785 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 22:25:52,788 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 22:25:52,789 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 22:25:52,793 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 22:25:52,794 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:25:52" (1/1) ... [2020-10-14 22:25:52,798 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c6b7cfa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:25:52, skipping insertion in model container [2020-10-14 22:25:52,798 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:25:52" (1/1) ... [2020-10-14 22:25:52,807 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 22:25:52,918 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 22:25:54,096 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 22:25:54,104 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 22:25:54,612 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 22:25:54,636 INFO L208 MainTranslator]: Completed translation [2020-10-14 22:25:54,638 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:25:54 WrapperNode [2020-10-14 22:25:54,638 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 22:25:54,639 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 22:25:54,639 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 22:25:54,639 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 22:25:54,654 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:25:54" (1/1) ... [2020-10-14 22:25:54,656 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:25:54" (1/1) ... [2020-10-14 22:25:54,718 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:25:54" (1/1) ... [2020-10-14 22:25:54,718 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:25:54" (1/1) ... [2020-10-14 22:25:54,835 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:25:54" (1/1) ... [2020-10-14 22:25:54,875 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:25:54" (1/1) ... [2020-10-14 22:25:54,901 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:25:54" (1/1) ... [2020-10-14 22:25:54,924 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 22:25:54,924 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 22:25:54,925 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 22:25:54,925 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 22:25:54,926 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:25:54" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 22:25:55,030 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 22:25:55,030 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 22:25:55,031 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 22:25:55,031 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 22:25:55,031 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 22:25:55,032 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 22:25:55,032 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 22:25:55,035 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 22:25:55,035 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 22:25:55,036 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 22:25:55,036 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 22:25:55,037 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 22:25:55,037 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 22:26:04,365 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 22:26:04,366 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 22:26:04,379 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:26:04 BoogieIcfgContainer [2020-10-14 22:26:04,380 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 22:26:04,381 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 22:26:04,381 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 22:26:04,385 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 22:26:04,385 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 10:25:52" (1/3) ... [2020-10-14 22:26:04,386 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@de497f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:26:04, skipping insertion in model container [2020-10-14 22:26:04,387 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:25:54" (2/3) ... [2020-10-14 22:26:04,387 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@de497f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:26:04, skipping insertion in model container [2020-10-14 22:26:04,387 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:26:04" (3/3) ... [2020-10-14 22:26:04,389 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem17_label11.c [2020-10-14 22:26:04,401 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 22:26:04,411 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 22:26:04,428 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 22:26:04,462 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 22:26:04,462 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 22:26:04,462 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 22:26:04,462 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 22:26:04,462 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 22:26:04,463 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 22:26:04,463 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 22:26:04,463 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 22:26:04,500 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states. [2020-10-14 22:26:04,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-14 22:26:04,512 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:26:04,514 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:26:04,515 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:26:04,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:26:04,523 INFO L82 PathProgramCache]: Analyzing trace with hash 2087948217, now seen corresponding path program 1 times [2020-10-14 22:26:04,535 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:26:04,536 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1351900577] [2020-10-14 22:26:04,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:26:04,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:26:04,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:26:05,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:26:05,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 22:26:05,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:26:05,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 540 [2020-10-14 22:26:05,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:26:05,300 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:26:05,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:26:05,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:26:05,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-14 22:26:05,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 22:26:05,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:26:05,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:26:05,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:26:05,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:26:05,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:26:05,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:26:05,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 22:26:05,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:26:05,449 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:26:05,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:26:05,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:26:05,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:26:05,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:26:05,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 22:26:05,471 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1351900577] [2020-10-14 22:26:05,473 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 22:26:05,474 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 22:26:05,475 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996503982] [2020-10-14 22:26:05,482 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 22:26:05,482 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:26:05,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 22:26:05,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 22:26:05,501 INFO L87 Difference]: Start difference. First operand 603 states. Second operand 4 states. [2020-10-14 22:26:16,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:26:16,139 INFO L93 Difference]: Finished difference Result 1693 states and 3093 transitions. [2020-10-14 22:26:16,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 22:26:16,142 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 62 [2020-10-14 22:26:16,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:26:16,169 INFO L225 Difference]: With dead ends: 1693 [2020-10-14 22:26:16,170 INFO L226 Difference]: Without dead ends: 1011 [2020-10-14 22:26:16,185 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 22:26:16,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1011 states. [2020-10-14 22:26:16,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1011 to 986. [2020-10-14 22:26:16,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 986 states. [2020-10-14 22:26:16,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 986 states to 986 states and 1578 transitions. [2020-10-14 22:26:16,309 INFO L78 Accepts]: Start accepts. Automaton has 986 states and 1578 transitions. Word has length 62 [2020-10-14 22:26:16,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:26:16,310 INFO L479 AbstractCegarLoop]: Abstraction has 986 states and 1578 transitions. [2020-10-14 22:26:16,310 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 22:26:16,310 INFO L276 IsEmpty]: Start isEmpty. Operand 986 states and 1578 transitions. [2020-10-14 22:26:16,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-10-14 22:26:16,317 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:26:16,318 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:26:16,318 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 22:26:16,319 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:26:16,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:26:16,319 INFO L82 PathProgramCache]: Analyzing trace with hash -279306104, now seen corresponding path program 1 times [2020-10-14 22:26:16,320 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:26:16,320 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1353306669] [2020-10-14 22:26:16,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:26:16,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:26:16,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:26:16,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:26:17,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:26:17,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-14 22:26:17,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:26:17,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1545 [2020-10-14 22:26:17,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:26:17,920 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:26:17,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:26:17,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-14 22:26:17,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-14 22:26:17,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 22:26:18,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:26:18,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:26:18,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:26:18,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:26:18,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:26:18,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:26:18,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 22:26:18,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:26:18,052 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:26:18,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:26:18,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:26:18,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:26:18,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 22:26:18,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:26:18,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:26:18,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:26:18,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:26:18,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 22:26:18,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:26:18,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-14 22:26:18,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:26:18,242 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:26:18,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:26:18,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:26:18,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-14 22:26:18,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 11 [2020-10-14 22:26:18,328 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 54 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 22:26:18,328 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1353306669] [2020-10-14 22:26:18,329 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:26:18,329 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 22:26:18,330 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797954068] [2020-10-14 22:26:18,334 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 22:26:18,334 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:26:18,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 22:26:18,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 22:26:18,335 INFO L87 Difference]: Start difference. First operand 986 states and 1578 transitions. Second operand 6 states. [2020-10-14 22:26:34,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:26:34,215 INFO L93 Difference]: Finished difference Result 2427 states and 4006 transitions. [2020-10-14 22:26:34,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 22:26:34,216 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 131 [2020-10-14 22:26:34,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:26:34,231 INFO L225 Difference]: With dead ends: 2427 [2020-10-14 22:26:34,232 INFO L226 Difference]: Without dead ends: 1888 [2020-10-14 22:26:34,236 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:26:34,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1888 states. [2020-10-14 22:26:34,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1888 to 1876. [2020-10-14 22:26:34,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1876 states. [2020-10-14 22:26:34,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1876 states to 1876 states and 3008 transitions. [2020-10-14 22:26:34,320 INFO L78 Accepts]: Start accepts. Automaton has 1876 states and 3008 transitions. Word has length 131 [2020-10-14 22:26:34,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:26:34,322 INFO L479 AbstractCegarLoop]: Abstraction has 1876 states and 3008 transitions. [2020-10-14 22:26:34,322 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 22:26:34,322 INFO L276 IsEmpty]: Start isEmpty. Operand 1876 states and 3008 transitions. [2020-10-14 22:26:34,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-10-14 22:26:34,329 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:26:34,329 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:26:34,330 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 22:26:34,330 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:26:34,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:26:34,331 INFO L82 PathProgramCache]: Analyzing trace with hash -111436400, now seen corresponding path program 1 times [2020-10-14 22:26:34,331 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:26:34,331 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [400845510] [2020-10-14 22:26:34,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:26:34,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:26:34,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:26:34,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:26:35,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:26:39,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:26:39,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-14 22:26:39,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 22:26:39,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-14 22:26:39,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:26:39,495 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:26:39,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 22:26:39,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:26:39,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-14 22:26:39,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:26:39,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:26:39,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:26:39,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:26:39,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:26:39,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:26:39,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:26:39,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 22:26:39,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:26:39,702 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:26:39,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:26:39,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:26:39,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:26:39,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:26:39,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:26:39,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:26:39,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:26:39,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:26:39,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 22:26:39,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:26:39,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 224 [2020-10-14 22:26:39,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:26:39,979 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:26:39,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 22:26:39,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:26:39,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-14 22:26:39,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:26:40,158 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 30 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 22:26:40,159 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [400845510] [2020-10-14 22:26:40,159 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:26:40,160 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:26:40,160 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317679845] [2020-10-14 22:26:40,161 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 22:26:40,161 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:26:40,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 22:26:40,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 22:26:40,162 INFO L87 Difference]: Start difference. First operand 1876 states and 3008 transitions. Second operand 8 states. [2020-10-14 22:27:00,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:27:00,444 INFO L93 Difference]: Finished difference Result 3787 states and 6258 transitions. [2020-10-14 22:27:00,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 22:27:00,447 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 136 [2020-10-14 22:27:00,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:27:00,460 INFO L225 Difference]: With dead ends: 3787 [2020-10-14 22:27:00,461 INFO L226 Difference]: Without dead ends: 1882 [2020-10-14 22:27:00,469 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-14 22:27:00,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1882 states. [2020-10-14 22:27:00,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1882 to 1865. [2020-10-14 22:27:00,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1865 states. [2020-10-14 22:27:00,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1865 states to 1865 states and 2647 transitions. [2020-10-14 22:27:00,539 INFO L78 Accepts]: Start accepts. Automaton has 1865 states and 2647 transitions. Word has length 136 [2020-10-14 22:27:00,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:27:00,539 INFO L479 AbstractCegarLoop]: Abstraction has 1865 states and 2647 transitions. [2020-10-14 22:27:00,540 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 22:27:00,540 INFO L276 IsEmpty]: Start isEmpty. Operand 1865 states and 2647 transitions. [2020-10-14 22:27:00,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2020-10-14 22:27:00,545 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:27:00,545 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:27:00,545 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 22:27:00,546 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:27:00,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:27:00,546 INFO L82 PathProgramCache]: Analyzing trace with hash -1881077511, now seen corresponding path program 1 times [2020-10-14 22:27:00,546 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:27:00,547 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1657895483] [2020-10-14 22:27:00,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:27:00,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:27:00,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:27:01,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:27:01,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 232 [2020-10-14 22:27:01,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:27:01,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 506 [2020-10-14 22:27:01,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:27:01,122 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:27:01,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:27:01,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-14 22:27:01,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 22:27:01,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 22:27:01,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:27:01,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:27:01,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:27:01,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:27:01,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:27:01,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:27:01,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 22:27:01,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:27:01,209 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:27:01,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:27:01,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:27:01,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:27:01,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:27:01,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:27:01,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:27:01,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:27:01,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:27:01,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:27:01,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:27:01,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-14 22:27:01,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:27:01,340 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:27:01,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:27:01,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:27:01,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 22:27:01,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:27:01,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:27:01,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:27:01,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:27:01,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:27:01,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 22:27:01,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:27:01,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-14 22:27:01,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:27:01,510 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:27:01,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:27:01,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:27:01,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-14 22:27:01,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:27:01,628 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 178 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 22:27:01,629 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1657895483] [2020-10-14 22:27:01,630 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:27:01,630 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:27:01,630 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496921385] [2020-10-14 22:27:01,631 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:27:01,631 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:27:01,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:27:01,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:27:01,633 INFO L87 Difference]: Start difference. First operand 1865 states and 2647 transitions. Second operand 7 states. [2020-10-14 22:27:20,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:27:20,891 INFO L93 Difference]: Finished difference Result 4701 states and 7070 transitions. [2020-10-14 22:27:20,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 22:27:20,893 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 220 [2020-10-14 22:27:20,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:27:20,921 INFO L225 Difference]: With dead ends: 4701 [2020-10-14 22:27:20,922 INFO L226 Difference]: Without dead ends: 2837 [2020-10-14 22:27:20,931 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 22:27:20,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2837 states. [2020-10-14 22:27:21,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2837 to 2353. [2020-10-14 22:27:21,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2353 states. [2020-10-14 22:27:21,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2353 states to 2353 states and 3271 transitions. [2020-10-14 22:27:21,031 INFO L78 Accepts]: Start accepts. Automaton has 2353 states and 3271 transitions. Word has length 220 [2020-10-14 22:27:21,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:27:21,033 INFO L479 AbstractCegarLoop]: Abstraction has 2353 states and 3271 transitions. [2020-10-14 22:27:21,033 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:27:21,033 INFO L276 IsEmpty]: Start isEmpty. Operand 2353 states and 3271 transitions. [2020-10-14 22:27:21,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2020-10-14 22:27:21,038 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:27:21,039 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:27:21,039 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 22:27:21,039 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:27:21,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:27:21,040 INFO L82 PathProgramCache]: Analyzing trace with hash -1000213135, now seen corresponding path program 1 times [2020-10-14 22:27:21,040 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:27:21,041 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1598069640] [2020-10-14 22:27:21,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:27:21,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:27:21,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:27:21,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:27:21,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:27:26,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:27:26,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 236 [2020-10-14 22:27:26,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 22:27:26,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4972 [2020-10-14 22:27:26,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:27:26,083 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:27:26,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 22:27:26,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:27:26,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 170 [2020-10-14 22:27:26,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:27:26,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:27:26,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:27:26,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:27:26,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:27:26,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:27:26,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:27:26,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 22:27:26,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:27:26,201 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:27:26,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:27:26,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:27:26,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:27:26,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-14 22:27:26,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:27:26,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:27:26,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:27:26,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:27:26,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:27:26,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:27:26,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 252 [2020-10-14 22:27:26,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:27:26,519 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:27:26,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 22:27:26,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:27:26,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-14 22:27:26,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:27:26,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:27:26,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:27:26,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:27:26,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:27:26,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 22:27:26,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:27:26,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-10-14 22:27:26,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:27:26,768 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:27:26,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:27:26,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:27:26,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 22:27:26,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 22:27:26,911 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 179 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 22:27:26,912 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1598069640] [2020-10-14 22:27:26,912 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:27:26,913 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 22:27:26,913 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219732684] [2020-10-14 22:27:26,914 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 22:27:26,914 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:27:26,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 22:27:26,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-14 22:27:26,915 INFO L87 Difference]: Start difference. First operand 2353 states and 3271 transitions. Second operand 10 states. [2020-10-14 22:27:48,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:27:48,526 INFO L93 Difference]: Finished difference Result 6246 states and 9393 transitions. [2020-10-14 22:27:48,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 22:27:48,528 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 224 [2020-10-14 22:27:48,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:27:48,555 INFO L225 Difference]: With dead ends: 6246 [2020-10-14 22:27:48,555 INFO L226 Difference]: Without dead ends: 4332 [2020-10-14 22:27:48,562 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=93, Invalid=287, Unknown=0, NotChecked=0, Total=380 [2020-10-14 22:27:48,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4332 states. [2020-10-14 22:27:48,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4332 to 4179. [2020-10-14 22:27:48,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4179 states. [2020-10-14 22:27:48,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4179 states to 4179 states and 5396 transitions. [2020-10-14 22:27:48,691 INFO L78 Accepts]: Start accepts. Automaton has 4179 states and 5396 transitions. Word has length 224 [2020-10-14 22:27:48,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:27:48,692 INFO L479 AbstractCegarLoop]: Abstraction has 4179 states and 5396 transitions. [2020-10-14 22:27:48,692 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 22:27:48,692 INFO L276 IsEmpty]: Start isEmpty. Operand 4179 states and 5396 transitions. [2020-10-14 22:27:48,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2020-10-14 22:27:48,696 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:27:48,696 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:27:48,696 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 22:27:48,697 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:27:48,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:27:48,697 INFO L82 PathProgramCache]: Analyzing trace with hash -1806079972, now seen corresponding path program 1 times [2020-10-14 22:27:48,697 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:27:48,698 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1425383679] [2020-10-14 22:27:48,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:27:48,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:27:48,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:27:48,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:27:49,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:27:53,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:27:53,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 247 [2020-10-14 22:27:53,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 22:27:53,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-14 22:27:53,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:27:53,783 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:27:53,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:27:53,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-14 22:27:53,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-14 22:27:53,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:27:53,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:27:53,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:27:53,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:27:53,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:27:53,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:27:53,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:27:53,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 22:27:53,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:27:53,902 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:27:53,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:27:53,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:27:53,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:27:53,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:27:53,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:27:53,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:27:53,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:27:54,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:27:54,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:27:54,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:27:54,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-14 22:27:54,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:27:54,070 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:27:54,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:27:54,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:27:54,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 22:27:54,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:27:54,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:27:54,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:27:54,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:27:54,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:27:54,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:27:54,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 22:27:54,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:27:54,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 266 [2020-10-14 22:27:54,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:27:54,422 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:27:54,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:27:54,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:27:54,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 22:27:54,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 22:27:54,580 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 108 proven. 2 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-14 22:27:54,581 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1425383679] [2020-10-14 22:27:54,582 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:27:54,583 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 22:27:54,583 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870281794] [2020-10-14 22:27:54,584 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 22:27:54,584 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:27:54,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 22:27:54,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 22:27:54,585 INFO L87 Difference]: Start difference. First operand 4179 states and 5396 transitions. Second operand 6 states. [2020-10-14 22:28:08,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:28:08,474 INFO L93 Difference]: Finished difference Result 8821 states and 11997 transitions. [2020-10-14 22:28:08,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 22:28:08,477 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 235 [2020-10-14 22:28:08,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:28:08,507 INFO L225 Difference]: With dead ends: 8821 [2020-10-14 22:28:08,507 INFO L226 Difference]: Without dead ends: 5959 [2020-10-14 22:28:08,515 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:28:08,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5959 states. [2020-10-14 22:28:08,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5959 to 4616. [2020-10-14 22:28:08,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4616 states. [2020-10-14 22:28:08,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4616 states to 4616 states and 6220 transitions. [2020-10-14 22:28:08,650 INFO L78 Accepts]: Start accepts. Automaton has 4616 states and 6220 transitions. Word has length 235 [2020-10-14 22:28:08,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:28:08,651 INFO L479 AbstractCegarLoop]: Abstraction has 4616 states and 6220 transitions. [2020-10-14 22:28:08,651 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 22:28:08,651 INFO L276 IsEmpty]: Start isEmpty. Operand 4616 states and 6220 transitions. [2020-10-14 22:28:08,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2020-10-14 22:28:08,658 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:28:08,658 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:28:08,658 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 22:28:08,659 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:28:08,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:28:08,659 INFO L82 PathProgramCache]: Analyzing trace with hash 1546539384, now seen corresponding path program 1 times [2020-10-14 22:28:08,659 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:28:08,660 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1076044977] [2020-10-14 22:28:08,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:28:08,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:28:08,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:08,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:09,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:11,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:13,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:28:13,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 307 [2020-10-14 22:28:13,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 22:28:13,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4982 [2020-10-14 22:28:13,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:28:13,707 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:28:13,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:28:13,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 168 [2020-10-14 22:28:13,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-14 22:28:13,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:28:13,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:28:13,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:28:13,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:13,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:28:13,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:28:13,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:28:13,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 22:28:13,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:28:13,827 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:28:13,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:28:13,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:28:13,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:28:13,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:28:13,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:28:13,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:28:13,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:13,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:28:13,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:28:13,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:28:13,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-14 22:28:13,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:28:13,892 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:28:13,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:28:13,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:28:13,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:28:13,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:28:13,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:28:13,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:28:13,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:14,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:28:14,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 22:28:14,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:28:14,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-14 22:28:14,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:28:14,019 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:28:14,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:28:14,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:28:14,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-14 22:28:14,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:28:14,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2020-10-14 22:28:14,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:28:14,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:14,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:28:14,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 22:28:14,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:28:14,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-10-14 22:28:14,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:28:14,210 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:28:14,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:28:14,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:28:14,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 22:28:14,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:28:14,405 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 308 proven. 2 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2020-10-14 22:28:14,406 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1076044977] [2020-10-14 22:28:14,406 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:28:14,406 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:28:14,407 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355640067] [2020-10-14 22:28:14,408 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:28:14,408 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:28:14,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:28:14,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:28:14,409 INFO L87 Difference]: Start difference. First operand 4616 states and 6220 transitions. Second operand 7 states. [2020-10-14 22:28:35,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:28:35,283 INFO L93 Difference]: Finished difference Result 10811 states and 15637 transitions. [2020-10-14 22:28:35,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 22:28:35,287 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 293 [2020-10-14 22:28:35,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:28:35,327 INFO L225 Difference]: With dead ends: 10811 [2020-10-14 22:28:35,328 INFO L226 Difference]: Without dead ends: 7512 [2020-10-14 22:28:35,345 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-14 22:28:35,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7512 states. [2020-10-14 22:28:35,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7512 to 6920. [2020-10-14 22:28:35,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6920 states. [2020-10-14 22:28:35,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6920 states to 6920 states and 9023 transitions. [2020-10-14 22:28:35,563 INFO L78 Accepts]: Start accepts. Automaton has 6920 states and 9023 transitions. Word has length 293 [2020-10-14 22:28:35,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:28:35,564 INFO L479 AbstractCegarLoop]: Abstraction has 6920 states and 9023 transitions. [2020-10-14 22:28:35,564 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:28:35,564 INFO L276 IsEmpty]: Start isEmpty. Operand 6920 states and 9023 transitions. [2020-10-14 22:28:35,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2020-10-14 22:28:35,574 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:28:35,575 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 22:28:35,575 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 22:28:35,576 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:28:35,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:28:35,576 INFO L82 PathProgramCache]: Analyzing trace with hash 608100976, now seen corresponding path program 1 times [2020-10-14 22:28:35,577 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:28:35,577 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1416597971] [2020-10-14 22:28:35,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:28:35,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:28:35,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:35,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:36,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:37,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:38,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:28:38,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 311 [2020-10-14 22:28:38,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 22:28:38,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2424 [2020-10-14 22:28:38,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:28:38,076 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:28:38,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:28:38,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 168 [2020-10-14 22:28:38,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 22:28:38,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:28:38,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:28:38,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:28:38,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:38,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:28:38,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:28:38,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:28:38,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 22:28:38,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:28:38,148 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:28:38,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:28:38,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:28:38,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:28:38,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:28:38,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:28:38,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:28:38,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:38,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:28:38,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:28:38,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:28:38,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-14 22:28:38,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:28:38,209 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:28:38,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:28:38,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:28:38,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:28:38,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:28:38,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:28:38,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:28:38,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:38,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:28:38,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 22:28:38,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:28:38,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-14 22:28:38,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:28:38,290 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:28:38,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:28:38,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:28:38,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-14 22:28:38,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:28:38,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2020-10-14 22:28:38,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:28:38,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:38,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:28:38,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 22:28:38,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:28:38,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-14 22:28:38,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:28:38,414 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:28:38,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:28:38,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:28:38,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-14 22:28:38,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:28:38,571 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 312 proven. 2 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2020-10-14 22:28:38,572 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1416597971] [2020-10-14 22:28:38,572 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:28:38,572 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:28:38,572 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933578438] [2020-10-14 22:28:38,573 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:28:38,574 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:28:38,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:28:38,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:28:38,574 INFO L87 Difference]: Start difference. First operand 6920 states and 9023 transitions. Second operand 7 states. [2020-10-14 22:28:57,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:28:57,966 INFO L93 Difference]: Finished difference Result 16291 states and 21980 transitions. [2020-10-14 22:28:57,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 22:28:57,969 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 297 [2020-10-14 22:28:57,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:28:58,004 INFO L225 Difference]: With dead ends: 16291 [2020-10-14 22:28:58,004 INFO L226 Difference]: Without dead ends: 10688 [2020-10-14 22:28:58,020 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 22:28:58,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10688 states. [2020-10-14 22:28:58,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10688 to 9697. [2020-10-14 22:28:58,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9697 states. [2020-10-14 22:28:58,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9697 states to 9697 states and 12097 transitions. [2020-10-14 22:28:58,227 INFO L78 Accepts]: Start accepts. Automaton has 9697 states and 12097 transitions. Word has length 297 [2020-10-14 22:28:58,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:28:58,228 INFO L479 AbstractCegarLoop]: Abstraction has 9697 states and 12097 transitions. [2020-10-14 22:28:58,228 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:28:58,228 INFO L276 IsEmpty]: Start isEmpty. Operand 9697 states and 12097 transitions. [2020-10-14 22:28:58,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2020-10-14 22:28:58,234 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:28:58,236 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 22:28:58,236 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 22:28:58,236 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:28:58,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:28:58,237 INFO L82 PathProgramCache]: Analyzing trace with hash -1309455807, now seen corresponding path program 1 times [2020-10-14 22:28:58,237 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:28:58,237 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1220692056] [2020-10-14 22:28:58,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:28:58,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:28:58,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:58,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:28:58,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 320 [2020-10-14 22:28:58,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:28:58,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 479 [2020-10-14 22:28:58,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:28:58,790 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:28:58,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:28:58,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 185 [2020-10-14 22:28:58,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 22:28:58,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:28:58,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:28:58,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:28:58,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:58,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:28:58,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:28:58,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:28:58,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 22:28:58,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:28:58,899 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:28:58,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:28:58,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:28:58,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:28:58,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:28:58,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:28:58,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:28:58,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:58,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:28:58,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:28:58,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:28:58,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 22:28:58,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:28:58,957 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:28:58,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:28:58,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:28:58,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:28:58,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:28:58,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:28:58,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:28:58,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:59,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:28:59,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 22:28:59,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:28:59,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-14 22:28:59,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:28:59,035 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:28:59,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:28:59,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:28:59,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 22:28:59,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:28:59,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-14 22:28:59,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:28:59,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:28:59,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:28:59,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 22:28:59,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:28:59,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-14 22:28:59,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:28:59,114 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:28:59,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:28:59,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:28:59,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-14 22:28:59,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:28:59,203 INFO L134 CoverageAnalysis]: Checked inductivity of 393 backedges. 306 proven. 2 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-10-14 22:28:59,204 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1220692056] [2020-10-14 22:28:59,204 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:28:59,204 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:28:59,204 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330292842] [2020-10-14 22:28:59,205 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:28:59,205 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:28:59,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:28:59,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:28:59,206 INFO L87 Difference]: Start difference. First operand 9697 states and 12097 transitions. Second operand 7 states. [2020-10-14 22:29:23,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:29:23,308 INFO L93 Difference]: Finished difference Result 21040 states and 28036 transitions. [2020-10-14 22:29:23,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 22:29:23,311 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 306 [2020-10-14 22:29:23,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:29:23,359 INFO L225 Difference]: With dead ends: 21040 [2020-10-14 22:29:23,359 INFO L226 Difference]: Without dead ends: 12660 [2020-10-14 22:29:23,383 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 22:29:23,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12660 states. [2020-10-14 22:29:23,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12660 to 11629. [2020-10-14 22:29:23,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11629 states. [2020-10-14 22:29:23,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11629 states to 11629 states and 15055 transitions. [2020-10-14 22:29:23,688 INFO L78 Accepts]: Start accepts. Automaton has 11629 states and 15055 transitions. Word has length 306 [2020-10-14 22:29:23,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:29:23,688 INFO L479 AbstractCegarLoop]: Abstraction has 11629 states and 15055 transitions. [2020-10-14 22:29:23,689 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:29:23,689 INFO L276 IsEmpty]: Start isEmpty. Operand 11629 states and 15055 transitions. [2020-10-14 22:29:23,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2020-10-14 22:29:23,700 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:29:23,700 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 22:29:23,701 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 22:29:23,701 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:29:23,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:29:23,702 INFO L82 PathProgramCache]: Analyzing trace with hash 704711639, now seen corresponding path program 1 times [2020-10-14 22:29:23,702 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:29:23,703 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1301535065] [2020-10-14 22:29:23,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:29:23,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:29:23,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:29:24,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:29:24,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:29:26,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:29:26,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 343 [2020-10-14 22:29:26,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 22:29:26,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2397 [2020-10-14 22:29:26,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:29:26,178 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:29:26,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:29:26,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-14 22:29:26,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-14 22:29:26,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:29:26,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:29:26,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:29:26,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:29:26,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:29:26,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:29:26,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:29:26,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 22:29:26,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:29:26,310 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:29:26,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:29:26,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:29:26,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:29:26,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:29:26,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:29:26,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:29:26,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:29:26,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:29:26,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:29:26,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:29:26,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-14 22:29:26,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:29:26,424 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:29:26,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:29:26,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:29:26,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 22:29:26,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:29:26,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:29:26,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:29:26,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:29:26,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:29:26,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-14 22:29:26,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:29:26,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-10-14 22:29:26,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:29:26,600 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:29:26,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:29:26,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:29:26,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-14 22:29:26,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:29:26,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-14 22:29:26,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:29:26,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:29:26,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:29:26,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 22:29:26,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:29:26,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 22:29:26,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:29:26,773 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:29:26,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:29:26,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-14 22:29:26,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:29:26,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:29:26,888 INFO L134 CoverageAnalysis]: Checked inductivity of 394 backedges. 253 proven. 70 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-10-14 22:29:26,889 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1301535065] [2020-10-14 22:29:26,889 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:29:26,889 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:29:26,889 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457911425] [2020-10-14 22:29:26,890 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:29:26,890 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:29:26,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:29:26,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:29:26,891 INFO L87 Difference]: Start difference. First operand 11629 states and 15055 transitions. Second operand 7 states.