/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem19_label15.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 04:28:58,362 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 04:28:58,365 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 04:28:58,396 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 04:28:58,397 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 04:28:58,398 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 04:28:58,400 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 04:28:58,403 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 04:28:58,405 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 04:28:58,407 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 04:28:58,408 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 04:28:58,410 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 04:28:58,410 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 04:28:58,412 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 04:28:58,416 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 04:28:58,420 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 04:28:58,424 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 04:28:58,426 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 04:28:58,431 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 04:28:58,438 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 04:28:58,443 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 04:28:58,446 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 04:28:58,450 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 04:28:58,451 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 04:28:58,458 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 04:28:58,458 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 04:28:58,458 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 04:28:58,464 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 04:28:58,465 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 04:28:58,467 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 04:28:58,467 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 04:28:58,468 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 04:28:58,470 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 04:28:58,472 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 04:28:58,474 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 04:28:58,474 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 04:28:58,475 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 04:28:58,476 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 04:28:58,476 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 04:28:58,478 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 04:28:58,480 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 04:28:58,481 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 04:28:58,551 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 04:28:58,551 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 04:28:58,555 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 04:28:58,556 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 04:28:58,556 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 04:28:58,556 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 04:28:58,556 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 04:28:58,557 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 04:28:58,557 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 04:28:58,559 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 04:28:58,559 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 04:28:58,560 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 04:28:58,560 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 04:28:58,560 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 04:28:58,560 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 04:28:58,560 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 04:28:58,561 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 04:28:58,561 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 04:28:58,561 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 04:28:58,561 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 04:28:58,561 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 04:28:58,562 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 04:28:58,567 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 04:28:58,567 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 04:28:58,568 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 04:28:58,568 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 04:28:58,568 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 04:28:58,568 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 04:28:58,568 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 04:28:58,569 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 04:28:58,948 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 04:28:58,983 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 04:28:58,992 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 04:28:58,997 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 04:28:58,998 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 04:28:58,999 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label15.c [2020-10-14 04:28:59,089 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/420d5a2af/0999ebc88e0044fd9fed31f57af0c7d7/FLAGbb3326eb9 [2020-10-14 04:29:00,337 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 04:29:00,338 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem19_label15.c [2020-10-14 04:29:00,417 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/420d5a2af/0999ebc88e0044fd9fed31f57af0c7d7/FLAGbb3326eb9 [2020-10-14 04:29:00,480 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/420d5a2af/0999ebc88e0044fd9fed31f57af0c7d7 [2020-10-14 04:29:00,497 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 04:29:00,500 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 04:29:00,506 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 04:29:00,507 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 04:29:00,513 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 04:29:00,515 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:29:00" (1/1) ... [2020-10-14 04:29:00,523 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f82650f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:29:00, skipping insertion in model container [2020-10-14 04:29:00,523 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:29:00" (1/1) ... [2020-10-14 04:29:00,539 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 04:29:00,837 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 04:29:03,440 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:29:03,453 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 04:29:04,661 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:29:04,728 INFO L208 MainTranslator]: Completed translation [2020-10-14 04:29:04,730 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:29:04 WrapperNode [2020-10-14 04:29:04,730 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 04:29:04,732 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 04:29:04,732 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 04:29:04,733 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 04:29:04,751 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:29:04" (1/1) ... [2020-10-14 04:29:04,751 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:29:04" (1/1) ... [2020-10-14 04:29:04,874 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:29:04" (1/1) ... [2020-10-14 04:29:04,875 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:29:04" (1/1) ... [2020-10-14 04:29:05,088 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:29:04" (1/1) ... [2020-10-14 04:29:05,147 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:29:04" (1/1) ... [2020-10-14 04:29:05,219 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:29:04" (1/1) ... [2020-10-14 04:29:05,352 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 04:29:05,353 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 04:29:05,354 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 04:29:05,354 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 04:29:05,355 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:29:04" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 04:29:05,571 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 04:29:05,572 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 04:29:05,572 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 04:29:05,572 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 04:29:05,572 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 04:29:05,574 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 04:29:05,574 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-14 04:29:05,574 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2020-10-14 04:29:05,575 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 04:29:05,575 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 04:29:05,575 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 04:29:05,575 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 04:29:05,575 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 04:29:05,575 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-14 04:29:05,576 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2020-10-14 04:29:05,576 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 04:29:05,576 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 04:29:05,576 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 04:29:05,576 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 04:29:05,576 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 04:29:05,577 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 04:29:21,746 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 04:29:21,747 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 04:29:21,778 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:29:21 BoogieIcfgContainer [2020-10-14 04:29:21,778 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 04:29:21,783 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 04:29:21,783 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 04:29:21,788 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 04:29:21,789 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 04:29:00" (1/3) ... [2020-10-14 04:29:21,791 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6793d250 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:29:21, skipping insertion in model container [2020-10-14 04:29:21,791 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:29:04" (2/3) ... [2020-10-14 04:29:21,792 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6793d250 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:29:21, skipping insertion in model container [2020-10-14 04:29:21,792 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:29:21" (3/3) ... [2020-10-14 04:29:21,797 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem19_label15.c [2020-10-14 04:29:21,816 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 04:29:21,835 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 04:29:21,858 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 04:29:21,916 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 04:29:21,917 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 04:29:21,917 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 04:29:21,917 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 04:29:21,917 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 04:29:21,918 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 04:29:21,918 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 04:29:21,918 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 04:29:21,993 INFO L276 IsEmpty]: Start isEmpty. Operand 1777 states. [2020-10-14 04:29:22,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-14 04:29:22,014 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:29:22,016 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:29:22,017 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:29:22,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:29:22,027 INFO L82 PathProgramCache]: Analyzing trace with hash 1625513898, now seen corresponding path program 1 times [2020-10-14 04:29:22,036 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:29:22,037 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [37658240] [2020-10-14 04:29:22,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:29:22,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:29:22,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:29:22,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:29:22,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 04:29:22,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:29:22,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 572 [2020-10-14 04:29:22,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:29:22,857 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:29:22,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 04:29:22,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 04:29:22,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-14 04:29:22,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-14 04:29:23,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:29:23,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:29:23,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:29:23,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:29:23,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:29:23,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:29:23,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 04:29:23,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:29:23,106 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:29:23,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:29:23,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:29:23,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 04:29:23,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:29:23,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:29:23,136 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [37658240] [2020-10-14 04:29:23,140 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:29:23,140 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 04:29:23,141 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423081464] [2020-10-14 04:29:23,150 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:29:23,151 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:29:23,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:29:23,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:29:23,177 INFO L87 Difference]: Start difference. First operand 1777 states. Second operand 5 states. [2020-10-14 04:29:59,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:29:59,595 INFO L93 Difference]: Finished difference Result 6460 states and 12277 transitions. [2020-10-14 04:29:59,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 04:29:59,599 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 64 [2020-10-14 04:29:59,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:29:59,649 INFO L225 Difference]: With dead ends: 6460 [2020-10-14 04:29:59,649 INFO L226 Difference]: Without dead ends: 4615 [2020-10-14 04:29:59,666 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:29:59,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4615 states. [2020-10-14 04:29:59,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4615 to 4607. [2020-10-14 04:29:59,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4607 states. [2020-10-14 04:29:59,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4607 states to 4607 states and 6985 transitions. [2020-10-14 04:29:59,990 INFO L78 Accepts]: Start accepts. Automaton has 4607 states and 6985 transitions. Word has length 64 [2020-10-14 04:29:59,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:29:59,993 INFO L479 AbstractCegarLoop]: Abstraction has 4607 states and 6985 transitions. [2020-10-14 04:29:59,993 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:29:59,994 INFO L276 IsEmpty]: Start isEmpty. Operand 4607 states and 6985 transitions. [2020-10-14 04:30:00,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-10-14 04:30:00,010 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:30:00,011 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:30:00,012 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 04:30:00,012 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:30:00,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:30:00,013 INFO L82 PathProgramCache]: Analyzing trace with hash 769347116, now seen corresponding path program 1 times [2020-10-14 04:30:00,014 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:30:00,014 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1009524850] [2020-10-14 04:30:00,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:30:00,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:30:00,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:30:00,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:30:00,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:30:01,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:30:02,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:30:02,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:30:03,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:30:03,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-10-14 04:30:03,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 04:30:03,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2966 [2020-10-14 04:30:03,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:30:03,054 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:30:03,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:30:03,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-14 04:30:03,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 04:30:03,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 04:30:03,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:30:03,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:30:03,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:30:03,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:30:03,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:30:03,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:30:03,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 04:30:03,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:30:03,137 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:30:03,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:30:03,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:30:03,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:30:03,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 86 [2020-10-14 04:30:03,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:30:03,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:30:03,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:30:03,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:30:03,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 04:30:03,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:30:03,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-14 04:30:03,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:30:03,361 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:30:03,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:30:03,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 66 [2020-10-14 04:30:03,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 04:30:03,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:30:03,488 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:30:03,488 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1009524850] [2020-10-14 04:30:03,489 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:30:03,489 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 04:30:03,489 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932580632] [2020-10-14 04:30:03,491 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:30:03,492 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:30:03,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:30:03,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:30:03,492 INFO L87 Difference]: Start difference. First operand 4607 states and 6985 transitions. Second operand 5 states. [2020-10-14 04:30:39,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:30:39,755 INFO L93 Difference]: Finished difference Result 13461 states and 20636 transitions. [2020-10-14 04:30:39,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:30:39,761 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 137 [2020-10-14 04:30:39,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:30:39,811 INFO L225 Difference]: With dead ends: 13461 [2020-10-14 04:30:39,812 INFO L226 Difference]: Without dead ends: 8860 [2020-10-14 04:30:39,827 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:30:39,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8860 states. [2020-10-14 04:30:40,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8860 to 8845. [2020-10-14 04:30:40,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8845 states. [2020-10-14 04:30:40,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8845 states to 8845 states and 12027 transitions. [2020-10-14 04:30:40,119 INFO L78 Accepts]: Start accepts. Automaton has 8845 states and 12027 transitions. Word has length 137 [2020-10-14 04:30:40,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:30:40,122 INFO L479 AbstractCegarLoop]: Abstraction has 8845 states and 12027 transitions. [2020-10-14 04:30:40,122 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:30:40,122 INFO L276 IsEmpty]: Start isEmpty. Operand 8845 states and 12027 transitions. [2020-10-14 04:30:40,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-10-14 04:30:40,133 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:30:40,133 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:30:40,134 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 04:30:40,134 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:30:40,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:30:40,135 INFO L82 PathProgramCache]: Analyzing trace with hash -1170497451, now seen corresponding path program 1 times [2020-10-14 04:30:40,135 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:30:40,135 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1323674035] [2020-10-14 04:30:40,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:30:40,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:30:40,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:30:40,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:30:40,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:30:42,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:30:42,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-14 04:30:42,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:30:42,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2185 [2020-10-14 04:30:42,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:30:42,382 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:30:42,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:30:42,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 91 [2020-10-14 04:30:42,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-14 04:30:42,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:30:42,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:30:42,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:30:42,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:30:42,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:30:42,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:30:42,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:30:42,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:30:42,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:30:42,539 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:30:42,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:30:42,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:30:42,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:30:42,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:30:42,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:30:42,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:30:42,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:30:42,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:30:42,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-14 04:30:42,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:30:42,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-14 04:30:42,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:30:42,695 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:30:42,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:30:42,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:30:42,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 04:30:42,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:30:42,748 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 56 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:30:42,748 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1323674035] [2020-10-14 04:30:42,749 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:30:42,749 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:30:42,749 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268461958] [2020-10-14 04:30:42,750 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:30:42,750 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:30:42,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:30:42,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:30:42,751 INFO L87 Difference]: Start difference. First operand 8845 states and 12027 transitions. Second operand 5 states. [2020-10-14 04:31:28,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:31:28,426 INFO L93 Difference]: Finished difference Result 26193 states and 36125 transitions. [2020-10-14 04:31:28,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:31:28,430 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 145 [2020-10-14 04:31:28,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:31:28,493 INFO L225 Difference]: With dead ends: 26193 [2020-10-14 04:31:28,493 INFO L226 Difference]: Without dead ends: 17354 [2020-10-14 04:31:28,518 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:31:28,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17354 states. [2020-10-14 04:31:28,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17354 to 17308. [2020-10-14 04:31:28,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17308 states. [2020-10-14 04:31:29,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17308 states to 17308 states and 22067 transitions. [2020-10-14 04:31:29,005 INFO L78 Accepts]: Start accepts. Automaton has 17308 states and 22067 transitions. Word has length 145 [2020-10-14 04:31:29,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:31:29,007 INFO L479 AbstractCegarLoop]: Abstraction has 17308 states and 22067 transitions. [2020-10-14 04:31:29,007 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:31:29,007 INFO L276 IsEmpty]: Start isEmpty. Operand 17308 states and 22067 transitions. [2020-10-14 04:31:29,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-10-14 04:31:29,011 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:31:29,011 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:31:29,012 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 04:31:29,012 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:31:29,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:31:29,012 INFO L82 PathProgramCache]: Analyzing trace with hash 915387327, now seen corresponding path program 1 times [2020-10-14 04:31:29,019 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:31:29,019 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [850784554] [2020-10-14 04:31:29,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:31:29,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:31:29,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:31:29,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:31:29,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:31:31,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:31:31,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-10-14 04:31:31,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:31:31,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2023 [2020-10-14 04:31:31,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:31:31,085 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:31:31,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:31:31,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 111 [2020-10-14 04:31:31,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-14 04:31:31,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:31:31,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:31:31,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:31:31,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:31:31,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:31:31,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:31:31,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:31:31,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:31:31,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:31:31,211 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:31:31,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:31:31,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:31:31,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:31:31,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:31:31,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:31:31,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:31:31,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:31:31,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:31:31,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-14 04:31:31,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:31:31,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-14 04:31:31,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:31:31,383 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:31:31,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:31:31,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:31:31,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-14 04:31:31,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:31:31,451 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 56 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:31:31,451 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [850784554] [2020-10-14 04:31:31,452 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:31:31,452 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:31:31,452 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799849518] [2020-10-14 04:31:31,453 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:31:31,454 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:31:31,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:31:31,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:31:31,455 INFO L87 Difference]: Start difference. First operand 17308 states and 22067 transitions. Second operand 5 states. [2020-10-14 04:32:32,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:32:32,581 INFO L93 Difference]: Finished difference Result 43125 states and 56645 transitions. [2020-10-14 04:32:32,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:32:32,588 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 165 [2020-10-14 04:32:32,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:32:32,701 INFO L225 Difference]: With dead ends: 43125 [2020-10-14 04:32:32,701 INFO L226 Difference]: Without dead ends: 25823 [2020-10-14 04:32:32,744 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:32:32,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25823 states. [2020-10-14 04:32:33,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25823 to 25748. [2020-10-14 04:32:33,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25748 states. [2020-10-14 04:32:33,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25748 states to 25748 states and 33430 transitions. [2020-10-14 04:32:33,530 INFO L78 Accepts]: Start accepts. Automaton has 25748 states and 33430 transitions. Word has length 165 [2020-10-14 04:32:33,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:32:33,531 INFO L479 AbstractCegarLoop]: Abstraction has 25748 states and 33430 transitions. [2020-10-14 04:32:33,531 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:32:33,531 INFO L276 IsEmpty]: Start isEmpty. Operand 25748 states and 33430 transitions. [2020-10-14 04:32:33,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2020-10-14 04:32:33,536 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:32:33,537 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:32:33,537 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 04:32:33,537 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:32:33,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:32:33,538 INFO L82 PathProgramCache]: Analyzing trace with hash -1538738150, now seen corresponding path program 1 times [2020-10-14 04:32:33,539 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:32:33,539 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2083206426] [2020-10-14 04:32:33,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:32:33,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:32:33,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:32:33,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:32:33,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:32:34,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:32:36,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:32:38,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:32:38,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 230 [2020-10-14 04:32:38,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 04:32:38,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-14 04:32:38,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:32:38,593 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:32:38,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:32:38,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 91 [2020-10-14 04:32:38,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 04:32:38,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:32:38,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:32:38,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:32:38,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:32:38,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:32:38,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:32:38,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:32:38,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 04:32:38,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:32:38,756 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:32:38,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:32:38,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:32:38,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:32:38,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:32:38,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:32:38,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:32:38,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:32:38,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:32:38,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-14 04:32:38,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:32:38,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-14 04:32:38,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:32:38,904 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:32:38,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:32:38,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:32:38,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 04:32:38,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:32:38,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-14 04:32:38,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:32:38,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:32:39,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:32:39,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 04:32:39,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:32:39,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-14 04:32:39,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:32:39,078 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:32:39,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:32:39,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:32:39,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 04:32:39,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 04:32:39,216 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 184 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 04:32:39,217 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2083206426] [2020-10-14 04:32:39,217 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:32:39,218 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:32:39,218 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415506144] [2020-10-14 04:32:39,219 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:32:39,219 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:32:39,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:32:39,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:32:39,220 INFO L87 Difference]: Start difference. First operand 25748 states and 33430 transitions. Second operand 7 states.