/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/Problem13_label22.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 03:02:55,454 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 03:02:55,459 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 03:02:55,506 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 03:02:55,507 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 03:02:55,519 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 03:02:55,521 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 03:02:55,522 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 03:02:55,524 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 03:02:55,525 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 03:02:55,526 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 03:02:55,528 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 03:02:55,528 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 03:02:55,529 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 03:02:55,530 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 03:02:55,531 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 03:02:55,532 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 03:02:55,533 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 03:02:55,535 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 03:02:55,537 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 03:02:55,538 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 03:02:55,540 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 03:02:55,541 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 03:02:55,542 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 03:02:55,545 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 03:02:55,545 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 03:02:55,545 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 03:02:55,546 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 03:02:55,547 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 03:02:55,548 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 03:02:55,548 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 03:02:55,549 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 03:02:55,550 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 03:02:55,551 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 03:02:55,552 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 03:02:55,552 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 03:02:55,553 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 03:02:55,553 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 03:02:55,553 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 03:02:55,554 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 03:02:55,555 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 03:02:55,556 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 03:02:55,581 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 03:02:55,581 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 03:02:55,583 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 03:02:55,583 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 03:02:55,584 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 03:02:55,584 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 03:02:55,584 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 03:02:55,584 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 03:02:55,585 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 03:02:55,585 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 03:02:55,585 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 03:02:55,585 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 03:02:55,586 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 03:02:55,586 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 03:02:55,586 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 03:02:55,586 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 03:02:55,586 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 03:02:55,587 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 03:02:55,587 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 03:02:55,587 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 03:02:55,588 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 03:02:55,588 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 03:02:55,588 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 03:02:55,588 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 03:02:55,589 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 03:02:55,589 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 03:02:55,589 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 03:02:55,589 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 03:02:55,589 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 03:02:55,590 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 03:02:55,945 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 03:02:55,968 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 03:02:55,972 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 03:02:55,974 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 03:02:55,975 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 03:02:55,976 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label22.c [2020-10-14 03:02:56,074 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b39e98cd1/99947106944d4e3dad11ea052176bed5/FLAGd8253a865 [2020-10-14 03:02:57,182 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 03:02:57,183 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem13_label22.c [2020-10-14 03:02:57,236 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b39e98cd1/99947106944d4e3dad11ea052176bed5/FLAGd8253a865 [2020-10-14 03:02:57,585 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b39e98cd1/99947106944d4e3dad11ea052176bed5 [2020-10-14 03:02:57,597 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 03:02:57,598 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 03:02:57,599 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 03:02:57,600 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 03:02:57,605 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 03:02:57,606 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 03:02:57" (1/1) ... [2020-10-14 03:02:57,610 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8874c8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:02:57, skipping insertion in model container [2020-10-14 03:02:57,610 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 03:02:57" (1/1) ... [2020-10-14 03:02:57,619 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 03:02:57,817 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 03:02:59,760 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 03:02:59,775 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 03:03:00,603 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 03:03:00,643 INFO L208 MainTranslator]: Completed translation [2020-10-14 03:03:00,644 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:03:00 WrapperNode [2020-10-14 03:03:00,644 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 03:03:00,646 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 03:03:00,646 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 03:03:00,646 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 03:03:00,664 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:03:00" (1/1) ... [2020-10-14 03:03:00,666 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:03:00" (1/1) ... [2020-10-14 03:03:00,744 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:03:00" (1/1) ... [2020-10-14 03:03:00,745 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:03:00" (1/1) ... [2020-10-14 03:03:00,896 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:03:00" (1/1) ... [2020-10-14 03:03:00,933 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:03:00" (1/1) ... [2020-10-14 03:03:01,018 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:03:00" (1/1) ... [2020-10-14 03:03:01,066 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 03:03:01,067 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 03:03:01,067 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 03:03:01,067 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 03:03:01,068 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:03:00" (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 03:03:01,145 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 03:03:01,145 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 03:03:01,145 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 03:03:01,146 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 03:03:01,146 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 03:03:01,146 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 03:03:01,146 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 03:03:01,146 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 03:03:01,147 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 03:03:01,147 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 03:03:01,147 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 03:03:01,147 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 03:03:01,148 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 03:03:01,148 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 03:03:01,148 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 03:03:01,148 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 03:03:01,148 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 03:03:13,286 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 03:03:13,287 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 03:03:13,307 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 03:03:13 BoogieIcfgContainer [2020-10-14 03:03:13,307 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 03:03:13,308 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 03:03:13,309 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 03:03:13,312 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 03:03:13,313 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 03:02:57" (1/3) ... [2020-10-14 03:03:13,313 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39059a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 03:03:13, skipping insertion in model container [2020-10-14 03:03:13,314 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:03:00" (2/3) ... [2020-10-14 03:03:13,314 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39059a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 03:03:13, skipping insertion in model container [2020-10-14 03:03:13,314 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 03:03:13" (3/3) ... [2020-10-14 03:03:13,316 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem13_label22.c [2020-10-14 03:03:13,328 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 03:03:13,339 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 03:03:13,355 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 03:03:13,389 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 03:03:13,389 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 03:03:13,389 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 03:03:13,390 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 03:03:13,390 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 03:03:13,390 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 03:03:13,390 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 03:03:13,390 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 03:03:13,433 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states. [2020-10-14 03:03:13,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-14 03:03:13,442 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:03:13,443 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] [2020-10-14 03:03:13,444 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:03:13,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:03:13,451 INFO L82 PathProgramCache]: Analyzing trace with hash -1172646233, now seen corresponding path program 1 times [2020-10-14 03:03:13,461 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:03:13,462 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1176549808] [2020-10-14 03:03:13,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:03:13,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:03:13,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:03:14,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:03:14,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-14 03:03:14,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:03:14,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 490 [2020-10-14 03:03:14,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:03:14,129 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:03:14,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 03:03:14,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 03:03:14,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-14 03:03:14,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 03:03:14,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:03:14,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:03:14,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:03:14,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:03:14,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:03:14,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:03:14,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 03:03:14,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:03:14,295 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:03:14,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:03:14,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:03:14,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 03:03:14,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:03:14,323 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 03:03:14,324 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1176549808] [2020-10-14 03:03:14,327 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 03:03:14,327 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 03:03:14,328 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121644035] [2020-10-14 03:03:14,335 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 03:03:14,336 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:03:14,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 03:03:14,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 03:03:14,356 INFO L87 Difference]: Start difference. First operand 1119 states. Second operand 4 states. [2020-10-14 03:03:31,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:03:31,931 INFO L93 Difference]: Finished difference Result 3107 states and 5729 transitions. [2020-10-14 03:03:31,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:03:31,935 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 38 [2020-10-14 03:03:31,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:03:31,972 INFO L225 Difference]: With dead ends: 3107 [2020-10-14 03:03:31,973 INFO L226 Difference]: Without dead ends: 1903 [2020-10-14 03:03:31,986 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 03:03:32,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1903 states. [2020-10-14 03:03:32,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1903 to 1883. [2020-10-14 03:03:32,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1883 states. [2020-10-14 03:03:32,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1883 states to 1883 states and 2890 transitions. [2020-10-14 03:03:32,184 INFO L78 Accepts]: Start accepts. Automaton has 1883 states and 2890 transitions. Word has length 38 [2020-10-14 03:03:32,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:03:32,186 INFO L479 AbstractCegarLoop]: Abstraction has 1883 states and 2890 transitions. [2020-10-14 03:03:32,186 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 03:03:32,186 INFO L276 IsEmpty]: Start isEmpty. Operand 1883 states and 2890 transitions. [2020-10-14 03:03:32,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-14 03:03:32,194 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:03:32,195 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:03:32,196 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 03:03:32,196 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:03:32,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:03:32,197 INFO L82 PathProgramCache]: Analyzing trace with hash 1676841103, now seen corresponding path program 1 times [2020-10-14 03:03:32,197 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:03:32,198 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1541682435] [2020-10-14 03:03:32,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:03:32,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:03:32,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:03:32,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:03:33,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:03:34,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:03:34,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-14 03:03:34,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 03:03:34,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1877 [2020-10-14 03:03:34,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:03:34,134 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:03:34,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:03:34,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-14 03:03:34,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-14 03:03:34,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-14 03:03:34,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:03:34,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:03:34,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:03:34,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:03:34,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:03:34,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:03:34,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 03:03:34,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:03:34,271 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:03:34,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:03:34,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:03:34,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:03:34,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:03:34,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:03:34,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:03:34,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:03:34,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:03:34,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 03:03:34,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:03:34,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-10-14 03:03:34,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:03:34,475 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:03:34,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:03:34,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:03:34,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-14 03:03:34,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:03:34,553 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 30 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:03:34,554 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1541682435] [2020-10-14 03:03:34,555 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:03:34,555 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:03:34,556 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317043374] [2020-10-14 03:03:34,559 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:03:34,560 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:03:34,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:03:34,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:03:34,561 INFO L87 Difference]: Start difference. First operand 1883 states and 2890 transitions. Second operand 5 states. [2020-10-14 03:03:51,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:03:51,464 INFO L93 Difference]: Finished difference Result 5461 states and 8423 transitions. [2020-10-14 03:03:51,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:03:51,465 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 107 [2020-10-14 03:03:51,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:03:51,503 INFO L225 Difference]: With dead ends: 5461 [2020-10-14 03:03:51,503 INFO L226 Difference]: Without dead ends: 3584 [2020-10-14 03:03:51,510 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 03:03:51,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3584 states. [2020-10-14 03:03:51,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3584 to 3563. [2020-10-14 03:03:51,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3563 states. [2020-10-14 03:03:51,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3563 states to 3563 states and 4830 transitions. [2020-10-14 03:03:51,689 INFO L78 Accepts]: Start accepts. Automaton has 3563 states and 4830 transitions. Word has length 107 [2020-10-14 03:03:51,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:03:51,693 INFO L479 AbstractCegarLoop]: Abstraction has 3563 states and 4830 transitions. [2020-10-14 03:03:51,693 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:03:51,693 INFO L276 IsEmpty]: Start isEmpty. Operand 3563 states and 4830 transitions. [2020-10-14 03:03:51,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-14 03:03:51,710 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:03:51,711 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:03:51,713 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 03:03:51,713 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:03:51,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:03:51,714 INFO L82 PathProgramCache]: Analyzing trace with hash -1298206357, now seen corresponding path program 1 times [2020-10-14 03:03:51,715 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:03:51,715 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [231760754] [2020-10-14 03:03:51,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:03:51,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:03:51,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:03:52,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:03:53,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:03:53,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-14 03:03:53,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:03:53,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1246 [2020-10-14 03:03:53,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:03:53,035 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:03:53,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:03:53,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-14 03:03:53,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-14 03:03:53,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:03:53,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:03:53,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:03:53,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:03:53,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:03:53,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:03:53,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:03:53,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 03:03:53,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:03:53,156 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:03:53,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:03:53,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:03:53,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:03:53,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:03:53,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:03:53,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:03:53,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:03:53,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:03:53,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-14 03:03:53,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:03:53,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-14 03:03:53,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:03:53,335 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:03:53,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:03:53,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:03:53,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-14 03:03:53,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:03:53,401 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 30 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:03:53,401 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [231760754] [2020-10-14 03:03:53,402 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:03:53,402 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:03:53,403 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517893893] [2020-10-14 03:03:53,406 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:03:53,406 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:03:53,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:03:53,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:03:53,407 INFO L87 Difference]: Start difference. First operand 3563 states and 4830 transitions. Second operand 5 states. [2020-10-14 03:04:12,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:04:12,402 INFO L93 Difference]: Finished difference Result 8774 states and 12275 transitions. [2020-10-14 03:04:12,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:04:12,408 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 114 [2020-10-14 03:04:12,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:04:12,438 INFO L225 Difference]: With dead ends: 8774 [2020-10-14 03:04:12,438 INFO L226 Difference]: Without dead ends: 5217 [2020-10-14 03:04:12,450 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 03:04:12,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5217 states. [2020-10-14 03:04:12,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5217 to 5209. [2020-10-14 03:04:12,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5209 states. [2020-10-14 03:04:12,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5209 states to 5209 states and 6731 transitions. [2020-10-14 03:04:12,644 INFO L78 Accepts]: Start accepts. Automaton has 5209 states and 6731 transitions. Word has length 114 [2020-10-14 03:04:12,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:04:12,654 INFO L479 AbstractCegarLoop]: Abstraction has 5209 states and 6731 transitions. [2020-10-14 03:04:12,654 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:04:12,654 INFO L276 IsEmpty]: Start isEmpty. Operand 5209 states and 6731 transitions. [2020-10-14 03:04:12,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-14 03:04:12,658 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:04:12,658 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:04:12,659 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 03:04:12,659 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:04:12,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:04:12,660 INFO L82 PathProgramCache]: Analyzing trace with hash 1387188880, now seen corresponding path program 1 times [2020-10-14 03:04:12,660 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:04:12,662 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [787127251] [2020-10-14 03:04:12,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:04:12,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:04:12,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:04:12,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:04:13,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:04:13,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:04:13,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-14 03:04:13,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 03:04:13,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 983 [2020-10-14 03:04:13,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:04:13,694 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:04:13,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:04:13,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-10-14 03:04:13,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-14 03:04:13,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:04:13,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:04:13,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:04:13,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:04:13,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:04:13,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:04:13,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:04:13,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 03:04:13,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:04:13,849 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:04:13,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:04:13,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:04:13,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:04:13,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:04:13,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:04:13,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:04:13,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:04:13,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:04:13,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 03:04:13,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:04:13,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-14 03:04:13,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:04:13,998 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:04:13,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:04:13,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:04:13,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 03:04:13,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:04:14,071 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 30 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:04:14,073 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [787127251] [2020-10-14 03:04:14,074 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:04:14,074 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:04:14,075 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981667744] [2020-10-14 03:04:14,075 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:04:14,077 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:04:14,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:04:14,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:04:14,078 INFO L87 Difference]: Start difference. First operand 5209 states and 6731 transitions. Second operand 5 states. [2020-10-14 03:04:38,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:04:38,376 INFO L93 Difference]: Finished difference Result 10462 states and 14497 transitions. [2020-10-14 03:04:38,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:04:38,378 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 124 [2020-10-14 03:04:38,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:04:38,417 INFO L225 Difference]: With dead ends: 10462 [2020-10-14 03:04:38,418 INFO L226 Difference]: Without dead ends: 7707 [2020-10-14 03:04:38,428 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 03:04:38,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7707 states. [2020-10-14 03:04:38,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7707 to 7659. [2020-10-14 03:04:38,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7659 states. [2020-10-14 03:04:38,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7659 states to 7659 states and 9563 transitions. [2020-10-14 03:04:38,684 INFO L78 Accepts]: Start accepts. Automaton has 7659 states and 9563 transitions. Word has length 124 [2020-10-14 03:04:38,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:04:38,685 INFO L479 AbstractCegarLoop]: Abstraction has 7659 states and 9563 transitions. [2020-10-14 03:04:38,686 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:04:38,686 INFO L276 IsEmpty]: Start isEmpty. Operand 7659 states and 9563 transitions. [2020-10-14 03:04:38,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-10-14 03:04:38,689 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:04:38,689 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:04:38,689 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 03:04:38,690 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:04:38,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:04:38,690 INFO L82 PathProgramCache]: Analyzing trace with hash -552973369, now seen corresponding path program 1 times [2020-10-14 03:04:38,690 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:04:38,691 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1341578638] [2020-10-14 03:04:38,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:04:38,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:04:38,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:04:39,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:04:39,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:04:39,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-14 03:04:39,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:04:39,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 912 [2020-10-14 03:04:39,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:04:39,658 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:04:39,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:04:39,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 115 [2020-10-14 03:04:39,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-14 03:04:39,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:04:39,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:04:39,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:04:39,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:04:39,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:04:39,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:04:39,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:04:39,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 03:04:39,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:04:39,753 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:04:39,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:04:39,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:04:39,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:04:39,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:04:39,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:04:39,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:04:39,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:04:39,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:04:39,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-14 03:04:39,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:04:39,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-14 03:04:39,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:04:39,944 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:04:39,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:04:39,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:04:39,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-14 03:04:39,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 03:04:40,023 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 30 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:04:40,024 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1341578638] [2020-10-14 03:04:40,024 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:04:40,024 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:04:40,025 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681165586] [2020-10-14 03:04:40,026 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:04:40,026 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:04:40,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:04:40,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:04:40,027 INFO L87 Difference]: Start difference. First operand 7659 states and 9563 transitions. Second operand 5 states. [2020-10-14 03:05:17,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:05:17,049 INFO L93 Difference]: Finished difference Result 18640 states and 23964 transitions. [2020-10-14 03:05:17,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:05:17,051 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 143 [2020-10-14 03:05:17,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:05:17,095 INFO L225 Difference]: With dead ends: 18640 [2020-10-14 03:05:17,095 INFO L226 Difference]: Without dead ends: 10987 [2020-10-14 03:05:17,111 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 03:05:17,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10987 states. [2020-10-14 03:05:17,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10987 to 10923. [2020-10-14 03:05:17,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10923 states. [2020-10-14 03:05:17,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10923 states to 10923 states and 13568 transitions. [2020-10-14 03:05:17,312 INFO L78 Accepts]: Start accepts. Automaton has 10923 states and 13568 transitions. Word has length 143 [2020-10-14 03:05:17,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:05:17,312 INFO L479 AbstractCegarLoop]: Abstraction has 10923 states and 13568 transitions. [2020-10-14 03:05:17,312 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:05:17,312 INFO L276 IsEmpty]: Start isEmpty. Operand 10923 states and 13568 transitions. [2020-10-14 03:05:17,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-10-14 03:05:17,314 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:05:17,315 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:05:17,315 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 03:05:17,315 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:05:17,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:05:17,316 INFO L82 PathProgramCache]: Analyzing trace with hash 1884741025, now seen corresponding path program 1 times [2020-10-14 03:05:17,316 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:05:17,316 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [481745146] [2020-10-14 03:05:17,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:05:17,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:05:17,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:05:17,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:05:17,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:05:17,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-14 03:05:17,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:05:17,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 607 [2020-10-14 03:05:17,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:05:17,955 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:05:17,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:05:17,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 116 [2020-10-14 03:05:17,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-14 03:05:17,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:05:18,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:05:18,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:05:18,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:05:18,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:05:18,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:05:18,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:05:18,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:05:18,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:05:18,040 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:05:18,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:05:18,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:05:18,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:05:18,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:05:18,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:05:18,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:05:18,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:05:18,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:05:18,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-14 03:05:18,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:05:18,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 164 [2020-10-14 03:05:18,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:05:18,254 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:05:18,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:05:18,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:05:18,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-14 03:05:18,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:05:18,310 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 30 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:05:18,311 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [481745146] [2020-10-14 03:05:18,312 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:05:18,312 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:05:18,312 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726980859] [2020-10-14 03:05:18,313 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:05:18,313 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:05:18,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:05:18,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:05:18,314 INFO L87 Difference]: Start difference. First operand 10923 states and 13568 transitions. Second operand 5 states. [2020-10-14 03:05:41,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:05:41,477 INFO L93 Difference]: Finished difference Result 25938 states and 33141 transitions. [2020-10-14 03:05:41,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:05:41,479 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 144 [2020-10-14 03:05:41,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:05:41,527 INFO L225 Difference]: With dead ends: 25938 [2020-10-14 03:05:41,527 INFO L226 Difference]: Without dead ends: 15021 [2020-10-14 03:05:41,550 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 03:05:41,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15021 states. [2020-10-14 03:05:41,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15021 to 15000. [2020-10-14 03:05:41,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15000 states. [2020-10-14 03:05:41,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15000 states to 15000 states and 18524 transitions. [2020-10-14 03:05:41,887 INFO L78 Accepts]: Start accepts. Automaton has 15000 states and 18524 transitions. Word has length 144 [2020-10-14 03:05:41,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:05:41,888 INFO L479 AbstractCegarLoop]: Abstraction has 15000 states and 18524 transitions. [2020-10-14 03:05:41,888 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:05:41,888 INFO L276 IsEmpty]: Start isEmpty. Operand 15000 states and 18524 transitions. [2020-10-14 03:05:41,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-14 03:05:41,891 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:05:41,891 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:05:41,892 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 03:05:41,892 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:05:41,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:05:41,892 INFO L82 PathProgramCache]: Analyzing trace with hash 453028298, now seen corresponding path program 1 times [2020-10-14 03:05:41,892 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:05:41,893 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1043473071] [2020-10-14 03:05:41,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:05:41,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:05:41,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:05:42,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:05:42,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:05:42,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-14 03:05:42,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:05:42,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 817 [2020-10-14 03:05:42,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:05:42,753 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:05:42,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:05:42,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 124 [2020-10-14 03:05:42,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-14 03:05:42,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 03:05:42,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:05:42,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:05:42,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:05:42,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:05:42,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:05:42,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:05:42,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 03:05:42,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:05:42,867 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:05:42,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:05:42,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:05:42,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:05:42,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:05:42,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:05:42,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:05:42,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:05:43,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:05:43,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-14 03:05:43,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:05:43,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-14 03:05:43,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:05:43,016 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:05:43,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:05:43,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:05:43,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-14 03:05:43,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:05:43,070 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 30 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:05:43,071 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1043473071] [2020-10-14 03:05:43,071 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:05:43,071 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:05:43,072 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292513308] [2020-10-14 03:05:43,073 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:05:43,073 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:05:43,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:05:43,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:05:43,073 INFO L87 Difference]: Start difference. First operand 15000 states and 18524 transitions. Second operand 5 states. [2020-10-14 03:06:07,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:06:07,792 INFO L93 Difference]: Finished difference Result 41351 states and 52334 transitions. [2020-10-14 03:06:07,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:06:07,796 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 152 [2020-10-14 03:06:07,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:06:07,904 INFO L225 Difference]: With dead ends: 41351 [2020-10-14 03:06:07,904 INFO L226 Difference]: Without dead ends: 26357 [2020-10-14 03:06:07,942 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 03:06:07,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26357 states. [2020-10-14 03:06:08,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26357 to 26347. [2020-10-14 03:06:08,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26347 states. [2020-10-14 03:06:08,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26347 states to 26347 states and 32333 transitions. [2020-10-14 03:06:08,483 INFO L78 Accepts]: Start accepts. Automaton has 26347 states and 32333 transitions. Word has length 152 [2020-10-14 03:06:08,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:06:08,484 INFO L479 AbstractCegarLoop]: Abstraction has 26347 states and 32333 transitions. [2020-10-14 03:06:08,484 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:06:08,484 INFO L276 IsEmpty]: Start isEmpty. Operand 26347 states and 32333 transitions. [2020-10-14 03:06:08,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-10-14 03:06:08,489 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:06:08,489 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:06:08,489 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 03:06:08,489 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:06:08,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:06:08,490 INFO L82 PathProgramCache]: Analyzing trace with hash 969586675, now seen corresponding path program 1 times [2020-10-14 03:06:08,490 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:06:08,491 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1451857402] [2020-10-14 03:06:08,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:06:08,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:06:08,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:06:08,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:06:10,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:06:10,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-14 03:06:10,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:06:10,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2167 [2020-10-14 03:06:10,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:06:10,696 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:06:10,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:06:10,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 125 [2020-10-14 03:06:10,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-14 03:06:10,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:06:10,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:06:10,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:06:10,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:06:10,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:06:10,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:06:10,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:06:10,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:06:10,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:06:10,802 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:06:10,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:06:10,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:06:10,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:06:10,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:06:10,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:06:10,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:06:10,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:06:10,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:06:10,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-14 03:06:10,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:06:10,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-14 03:06:10,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:06:10,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:06:10,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:06:10,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:06:10,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-14 03:06:10,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:06:11,023 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 30 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:06:11,024 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1451857402] [2020-10-14 03:06:11,024 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:06:11,024 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:06:11,024 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083139289] [2020-10-14 03:06:11,025 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:06:11,025 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:06:11,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:06:11,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:06:11,026 INFO L87 Difference]: Start difference. First operand 26347 states and 32333 transitions. Second operand 5 states. [2020-10-14 03:06:38,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:06:38,686 INFO L93 Difference]: Finished difference Result 68910 states and 87585 transitions. [2020-10-14 03:06:38,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:06:38,689 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 153 [2020-10-14 03:06:38,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:06:38,842 INFO L225 Difference]: With dead ends: 68910 [2020-10-14 03:06:38,843 INFO L226 Difference]: Without dead ends: 42569 [2020-10-14 03:06:38,891 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 03:06:38,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42569 states. [2020-10-14 03:06:39,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42569 to 42558. [2020-10-14 03:06:39,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42558 states. [2020-10-14 03:06:39,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42558 states to 42558 states and 52035 transitions. [2020-10-14 03:06:39,756 INFO L78 Accepts]: Start accepts. Automaton has 42558 states and 52035 transitions. Word has length 153 [2020-10-14 03:06:39,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:06:39,757 INFO L479 AbstractCegarLoop]: Abstraction has 42558 states and 52035 transitions. [2020-10-14 03:06:39,757 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:06:39,757 INFO L276 IsEmpty]: Start isEmpty. Operand 42558 states and 52035 transitions. [2020-10-14 03:06:39,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-10-14 03:06:39,764 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:06:39,765 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 03:06:39,765 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 03:06:39,765 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:06:39,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:06:39,766 INFO L82 PathProgramCache]: Analyzing trace with hash 589351491, now seen corresponding path program 1 times [2020-10-14 03:06:39,766 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:06:39,766 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [580554829] [2020-10-14 03:06:39,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:06:39,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:06:39,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:06:39,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:06:40,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:06:41,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:06:43,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:06:43,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 206 [2020-10-14 03:06:43,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 03:06:43,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3262 [2020-10-14 03:06:43,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:06:43,066 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:06:43,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:06:43,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-14 03:06:43,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-14 03:06:43,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:06:43,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:06:43,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:06:43,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:06:43,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:06:43,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:06:43,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:06:43,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 03:06:43,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:06:43,218 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:06:43,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:06:43,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:06:43,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:06:43,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:06:43,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:06:43,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:06:43,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:06:43,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:06:43,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 03:06:43,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:06:43,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-14 03:06:43,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:06:43,389 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:06:43,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:06:43,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:06:43,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-14 03:06:43,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:06:43,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-14 03:06:43,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:06:43,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:06:43,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:06:43,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 03:06:43,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:06:43,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 221 [2020-10-14 03:06:43,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:06:43,667 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:06:43,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:06:43,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:06:43,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-14 03:06:43,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:06:43,867 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 128 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 03:06:43,873 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [580554829] [2020-10-14 03:06:43,875 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:06:43,876 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:06:43,876 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391969821] [2020-10-14 03:06:43,877 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:06:43,878 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:06:43,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:06:43,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:06:43,878 INFO L87 Difference]: Start difference. First operand 42558 states and 52035 transitions. Second operand 7 states.