/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.1 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem02_label42.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 10:09:58,521 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 10:09:58,525 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 10:09:58,551 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 10:09:58,552 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 10:09:58,553 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 10:09:58,555 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 10:09:58,557 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 10:09:58,559 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 10:09:58,560 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 10:09:58,561 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 10:09:58,563 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 10:09:58,563 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 10:09:58,564 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 10:09:58,566 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 10:09:58,567 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 10:09:58,568 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 10:09:58,569 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 10:09:58,572 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 10:09:58,580 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 10:09:58,582 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 10:09:58,584 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 10:09:58,586 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 10:09:58,586 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 10:09:58,589 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 10:09:58,589 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 10:09:58,589 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 10:09:58,594 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 10:09:58,594 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 10:09:58,595 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 10:09:58,597 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 10:09:58,598 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 10:09:58,599 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 10:09:58,600 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 10:09:58,601 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 10:09:58,602 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 10:09:58,603 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 10:09:58,603 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 10:09:58,603 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 10:09:58,604 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 10:09:58,606 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 10:09:58,607 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 10:09:58,670 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 10:09:58,670 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 10:09:58,675 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 10:09:58,675 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 10:09:58,675 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 10:09:58,676 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 10:09:58,678 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 10:09:58,678 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 10:09:58,678 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 10:09:58,679 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 10:09:58,679 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 10:09:58,679 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 10:09:58,679 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 10:09:58,679 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 10:09:58,680 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 10:09:58,682 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 10:09:58,682 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 10:09:58,682 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 10:09:58,682 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 10:09:58,683 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 10:09:58,683 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 10:09:58,683 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 10:09:58,683 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 10:09:58,684 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 10:09:58,684 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 10:09:58,684 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 10:09:58,685 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 10:09:58,685 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 10:09:58,685 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 10:09:58,685 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; [2020-09-25 10:09:59,171 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 10:09:59,190 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 10:09:59,193 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 10:09:59,195 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 10:09:59,195 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 10:09:59,197 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label42.c [2020-09-25 10:09:59,291 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cc2dbe812/00e91dfe65db4145a87a2a33d0a80996/FLAG2642d2f32 [2020-09-25 10:09:59,998 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 10:09:59,999 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label42.c [2020-09-25 10:10:00,020 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cc2dbe812/00e91dfe65db4145a87a2a33d0a80996/FLAG2642d2f32 [2020-09-25 10:10:00,221 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cc2dbe812/00e91dfe65db4145a87a2a33d0a80996 [2020-09-25 10:10:00,237 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 10:10:00,244 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 10:10:00,247 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 10:10:00,248 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 10:10:00,253 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 10:10:00,254 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:10:00" (1/1) ... [2020-09-25 10:10:00,259 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5783693b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:10:00, skipping insertion in model container [2020-09-25 10:10:00,259 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:10:00" (1/1) ... [2020-09-25 10:10:00,270 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 10:10:00,335 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 10:10:00,775 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:10:00,782 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 10:10:01,026 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:10:01,053 INFO L208 MainTranslator]: Completed translation [2020-09-25 10:10:01,054 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:10:01 WrapperNode [2020-09-25 10:10:01,054 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 10:10:01,055 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 10:10:01,055 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 10:10:01,055 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 10:10:01,073 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:10:01" (1/1) ... [2020-09-25 10:10:01,074 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:10:01" (1/1) ... [2020-09-25 10:10:01,093 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:10:01" (1/1) ... [2020-09-25 10:10:01,093 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:10:01" (1/1) ... [2020-09-25 10:10:01,132 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:10:01" (1/1) ... [2020-09-25 10:10:01,151 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:10:01" (1/1) ... [2020-09-25 10:10:01,156 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:10:01" (1/1) ... [2020-09-25 10:10:01,170 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 10:10:01,170 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 10:10:01,170 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 10:10:01,171 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 10:10:01,172 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:10:01" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 10:10:01,288 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 10:10:01,289 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 10:10:01,289 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 10:10:01,289 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 10:10:01,289 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 10:10:01,290 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 10:10:01,290 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 10:10:01,290 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 10:10:01,290 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 10:10:01,290 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 10:10:01,291 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 10:10:02,659 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 10:10:02,660 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 10:10:02,669 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:10:02 BoogieIcfgContainer [2020-09-25 10:10:02,669 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 10:10:02,671 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 10:10:02,671 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 10:10:02,674 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 10:10:02,675 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 10:10:00" (1/3) ... [2020-09-25 10:10:02,676 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@786d3a14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:10:02, skipping insertion in model container [2020-09-25 10:10:02,676 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:10:01" (2/3) ... [2020-09-25 10:10:02,676 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@786d3a14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:10:02, skipping insertion in model container [2020-09-25 10:10:02,677 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:10:02" (3/3) ... [2020-09-25 10:10:02,679 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label42.c [2020-09-25 10:10:02,691 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 10:10:02,703 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 10:10:02,727 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 10:10:02,766 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 10:10:02,766 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 10:10:02,766 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 10:10:02,766 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 10:10:02,766 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 10:10:02,767 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 10:10:02,767 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 10:10:02,767 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 10:10:02,800 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 10:10:02,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-09-25 10:10:02,820 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:10:02,822 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:10:02,823 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:10:02,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:10:02,832 INFO L82 PathProgramCache]: Analyzing trace with hash -551630175, now seen corresponding path program 1 times [2020-09-25 10:10:02,843 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:10:02,844 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2106040551] [2020-09-25 10:10:02,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:10:03,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:03,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:03,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:03,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:04,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:06,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:06,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:08,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:08,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:08,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-09-25 10:10:08,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 10:10:08,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5098 [2020-09-25 10:10:08,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:08,247 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:08,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:10:08,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 10:10:08,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-09-25 10:10:08,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 10:10:08,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:10:08,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:08,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:08,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:08,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:10:08,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:10:08,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-25 10:10:08,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:08,552 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:08,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:10:08,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:10:08,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 10:10:08,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 10:10:08,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:10:08,689 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2106040551] [2020-09-25 10:10:08,692 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:10:08,693 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 10:10:08,694 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931866253] [2020-09-25 10:10:08,702 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 10:10:08,702 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:10:08,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 10:10:08,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 10:10:08,723 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 5 states. [2020-09-25 10:10:12,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:10:12,254 INFO L93 Difference]: Finished difference Result 1430 states and 2024 transitions. [2020-09-25 10:10:12,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 10:10:12,256 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 126 [2020-09-25 10:10:12,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:10:12,285 INFO L225 Difference]: With dead ends: 1430 [2020-09-25 10:10:12,285 INFO L226 Difference]: Without dead ends: 847 [2020-09-25 10:10:12,297 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 10:10:12,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 847 states. [2020-09-25 10:10:12,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 847 to 775. [2020-09-25 10:10:12,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 775 states. [2020-09-25 10:10:12,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 775 states to 775 states and 947 transitions. [2020-09-25 10:10:12,424 INFO L78 Accepts]: Start accepts. Automaton has 775 states and 947 transitions. Word has length 126 [2020-09-25 10:10:12,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:10:12,427 INFO L479 AbstractCegarLoop]: Abstraction has 775 states and 947 transitions. [2020-09-25 10:10:12,427 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 10:10:12,427 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states and 947 transitions. [2020-09-25 10:10:12,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-09-25 10:10:12,445 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:10:12,446 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:10:12,446 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 10:10:12,446 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:10:12,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:10:12,448 INFO L82 PathProgramCache]: Analyzing trace with hash 830786714, now seen corresponding path program 1 times [2020-09-25 10:10:12,448 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:10:12,449 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [476585459] [2020-09-25 10:10:12,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:10:12,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:12,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:12,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:12,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:13,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:14,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:14,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:15,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:17,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:17,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-09-25 10:10:17,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 10:10:17,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-09-25 10:10:17,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:17,520 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:17,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 10:10:17,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 10:10:17,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-09-25 10:10:17,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 10:10:17,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:10:17,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:17,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:17,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:17,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:10:17,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:10:17,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 10:10:17,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:17,673 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:17,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:10:17,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:10:17,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 10:10:17,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:10:17,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 10:10:17,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:17,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:17,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:17,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 10:10:17,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:10:17,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 10:10:17,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:17,732 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:17,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:10:17,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:10:17,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 10:10:17,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:10:17,802 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 10:10:17,803 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [476585459] [2020-09-25 10:10:17,803 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:10:17,803 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 10:10:17,804 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380272723] [2020-09-25 10:10:17,806 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 10:10:17,806 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:10:17,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 10:10:17,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 10:10:17,807 INFO L87 Difference]: Start difference. First operand 775 states and 947 transitions. Second operand 6 states. [2020-09-25 10:10:19,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:10:19,855 INFO L93 Difference]: Finished difference Result 2161 states and 2708 transitions. [2020-09-25 10:10:19,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 10:10:19,856 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 143 [2020-09-25 10:10:19,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:10:19,871 INFO L225 Difference]: With dead ends: 2161 [2020-09-25 10:10:19,871 INFO L226 Difference]: Without dead ends: 1408 [2020-09-25 10:10:19,876 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-09-25 10:10:19,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1408 states. [2020-09-25 10:10:19,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1408 to 1352. [2020-09-25 10:10:19,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1352 states. [2020-09-25 10:10:19,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1352 states to 1352 states and 1678 transitions. [2020-09-25 10:10:19,938 INFO L78 Accepts]: Start accepts. Automaton has 1352 states and 1678 transitions. Word has length 143 [2020-09-25 10:10:19,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:10:19,940 INFO L479 AbstractCegarLoop]: Abstraction has 1352 states and 1678 transitions. [2020-09-25 10:10:19,940 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 10:10:19,940 INFO L276 IsEmpty]: Start isEmpty. Operand 1352 states and 1678 transitions. [2020-09-25 10:10:19,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-09-25 10:10:19,946 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:10:19,947 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:10:19,947 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 10:10:19,947 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:10:19,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:10:19,948 INFO L82 PathProgramCache]: Analyzing trace with hash -221683794, now seen corresponding path program 1 times [2020-09-25 10:10:19,948 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:10:19,948 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [479331802] [2020-09-25 10:10:19,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:10:19,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:20,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:20,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:20,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:20,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:20,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:21,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:21,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:23,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:23,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:24,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:24,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:25,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:25,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-09-25 10:10:25,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 10:10:25,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-09-25 10:10:25,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:25,014 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:25,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 10:10:25,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 10:10:25,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-09-25 10:10:25,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:10:25,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:10:25,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:25,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:25,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:25,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:10:25,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:10:25,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-09-25 10:10:25,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:25,227 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:25,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:10:25,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:10:25,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 10:10:25,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 10:10:25,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 10:10:25,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:25,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:25,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:25,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:25,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 10:10:25,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:10:25,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-25 10:10:25,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:25,328 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:25,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:10:25,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:10:25,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 10:10:25,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 10:10:25,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 10:10:25,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:25,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:25,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:25,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:25,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 10:10:25,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:10:25,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-09-25 10:10:25,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:25,480 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:25,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 10:10:25,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:10:25,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 10:10:25,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-09-25 10:10:25,880 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 22 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-25 10:10:25,882 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [479331802] [2020-09-25 10:10:25,882 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:10:25,882 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 10:10:25,883 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028037969] [2020-09-25 10:10:25,883 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 10:10:25,883 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:10:25,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 10:10:25,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-09-25 10:10:25,886 INFO L87 Difference]: Start difference. First operand 1352 states and 1678 transitions. Second operand 13 states. [2020-09-25 10:10:32,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:10:32,017 INFO L93 Difference]: Finished difference Result 5934 states and 8237 transitions. [2020-09-25 10:10:32,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-09-25 10:10:32,017 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 161 [2020-09-25 10:10:32,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:10:32,057 INFO L225 Difference]: With dead ends: 5934 [2020-09-25 10:10:32,057 INFO L226 Difference]: Without dead ends: 4345 [2020-09-25 10:10:32,069 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=264, Invalid=548, Unknown=0, NotChecked=0, Total=812 [2020-09-25 10:10:32,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4345 states. [2020-09-25 10:10:32,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4345 to 4162. [2020-09-25 10:10:32,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4162 states. [2020-09-25 10:10:32,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4162 states to 4162 states and 5172 transitions. [2020-09-25 10:10:32,249 INFO L78 Accepts]: Start accepts. Automaton has 4162 states and 5172 transitions. Word has length 161 [2020-09-25 10:10:32,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:10:32,250 INFO L479 AbstractCegarLoop]: Abstraction has 4162 states and 5172 transitions. [2020-09-25 10:10:32,250 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 10:10:32,250 INFO L276 IsEmpty]: Start isEmpty. Operand 4162 states and 5172 transitions. [2020-09-25 10:10:32,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-09-25 10:10:32,263 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:10:32,263 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:10:32,263 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 10:10:32,264 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:10:32,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:10:32,264 INFO L82 PathProgramCache]: Analyzing trace with hash -850064427, now seen corresponding path program 1 times [2020-09-25 10:10:32,264 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:10:32,265 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [753516701] [2020-09-25 10:10:32,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:10:32,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:32,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:32,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:32,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:33,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:33,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:33,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:34,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:34,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:35,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:37,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:37,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 190 [2020-09-25 10:10:37,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 10:10:37,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-09-25 10:10:37,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:37,321 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:37,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 10:10:37,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 10:10:37,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 155 [2020-09-25 10:10:37,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:10:37,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:10:37,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:37,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:37,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:37,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:10:37,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:10:37,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 10:10:37,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:37,565 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:37,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:10:37,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:10:37,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 10:10:37,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:10:37,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 10:10:37,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:37,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:37,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:37,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:37,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 10:10:37,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:10:37,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 10:10:37,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:37,613 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:37,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:10:37,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:10:37,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 10:10:37,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:10:37,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 10:10:37,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:37,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:37,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:37,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:37,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 10:10:37,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:10:37,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 185 [2020-09-25 10:10:37,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:37,814 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:37,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 10:10:37,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:10:37,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 10:10:37,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 10:10:38,170 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 36 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-25 10:10:38,172 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [753516701] [2020-09-25 10:10:38,173 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:10:38,173 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 10:10:38,174 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19474095] [2020-09-25 10:10:38,175 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 10:10:38,175 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:10:38,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 10:10:38,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2020-09-25 10:10:38,178 INFO L87 Difference]: Start difference. First operand 4162 states and 5172 transitions. Second operand 11 states. [2020-09-25 10:10:38,878 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 62 [2020-09-25 10:10:41,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:10:41,737 INFO L93 Difference]: Finished difference Result 8807 states and 11444 transitions. [2020-09-25 10:10:41,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 10:10:41,741 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 177 [2020-09-25 10:10:41,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:10:41,763 INFO L225 Difference]: With dead ends: 8807 [2020-09-25 10:10:41,764 INFO L226 Difference]: Without dead ends: 3785 [2020-09-25 10:10:41,784 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=117, Invalid=263, Unknown=0, NotChecked=0, Total=380 [2020-09-25 10:10:41,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3785 states. [2020-09-25 10:10:41,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3785 to 3771. [2020-09-25 10:10:41,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3771 states. [2020-09-25 10:10:41,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3771 states to 3771 states and 4545 transitions. [2020-09-25 10:10:41,900 INFO L78 Accepts]: Start accepts. Automaton has 3771 states and 4545 transitions. Word has length 177 [2020-09-25 10:10:41,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:10:41,900 INFO L479 AbstractCegarLoop]: Abstraction has 3771 states and 4545 transitions. [2020-09-25 10:10:41,900 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 10:10:41,900 INFO L276 IsEmpty]: Start isEmpty. Operand 3771 states and 4545 transitions. [2020-09-25 10:10:41,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2020-09-25 10:10:41,913 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:10:41,913 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:10:41,913 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 10:10:41,914 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:10:41,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:10:41,914 INFO L82 PathProgramCache]: Analyzing trace with hash 1969901474, now seen corresponding path program 1 times [2020-09-25 10:10:41,914 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:10:41,915 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1193317211] [2020-09-25 10:10:41,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:10:41,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:41,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:42,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:42,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:42,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking...