/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=0.5 --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/Problem01_label50.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 14:37:41,583 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 14:37:41,587 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 14:37:41,614 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 14:37:41,614 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 14:37:41,616 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 14:37:41,617 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 14:37:41,619 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 14:37:41,621 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 14:37:41,622 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 14:37:41,623 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 14:37:41,624 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 14:37:41,625 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 14:37:41,626 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 14:37:41,627 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 14:37:41,628 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 14:37:41,630 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 14:37:41,631 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 14:37:41,637 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 14:37:41,640 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 14:37:41,644 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 14:37:41,646 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 14:37:41,649 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 14:37:41,651 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 14:37:41,655 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 14:37:41,655 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 14:37:41,656 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 14:37:41,658 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 14:37:41,658 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 14:37:41,661 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 14:37:41,661 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 14:37:41,663 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 14:37:41,664 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 14:37:41,664 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 14:37:41,666 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 14:37:41,666 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 14:37:41,667 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 14:37:41,667 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 14:37:41,667 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 14:37:41,668 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 14:37:41,670 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 14:37:41,671 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 14:37:41,731 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 14:37:41,733 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 14:37:41,735 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 14:37:41,735 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 14:37:41,735 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 14:37:41,735 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 14:37:41,736 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 14:37:41,736 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 14:37:41,737 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 14:37:41,737 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 14:37:41,737 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 14:37:41,737 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 14:37:41,737 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 14:37:41,738 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 14:37:41,738 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 14:37:41,738 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 14:37:41,738 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 14:37:41,738 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 14:37:41,739 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 14:37:41,740 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 14:37:41,740 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 14:37:41,740 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:37:41,741 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 14:37:41,741 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 14:37:41,741 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 14:37:41,741 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 14:37:41,741 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 14:37:41,742 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 14:37:41,742 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 14:37:41,742 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=0.5;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=0.5;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=0.5;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=0.5;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=0.5;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=0.5;log-additional-information=true; [2020-09-25 14:37:42,229 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 14:37:42,254 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 14:37:42,259 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 14:37:42,261 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 14:37:42,262 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 14:37:42,263 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label50.c [2020-09-25 14:37:42,351 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8c0656794/752ec4b7b94249758d49929c8b5d5740/FLAGcee3bbd2a [2020-09-25 14:37:43,029 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 14:37:43,030 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label50.c [2020-09-25 14:37:43,043 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8c0656794/752ec4b7b94249758d49929c8b5d5740/FLAGcee3bbd2a [2020-09-25 14:37:43,251 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8c0656794/752ec4b7b94249758d49929c8b5d5740 [2020-09-25 14:37:43,263 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 14:37:43,269 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 14:37:43,270 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 14:37:43,270 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 14:37:43,274 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 14:37:43,276 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:37:43" (1/1) ... [2020-09-25 14:37:43,280 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@194bd3d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:37:43, skipping insertion in model container [2020-09-25 14:37:43,281 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:37:43" (1/1) ... [2020-09-25 14:37:43,290 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 14:37:43,363 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 14:37:43,951 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:37:43,958 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 14:37:44,162 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:37:44,181 INFO L208 MainTranslator]: Completed translation [2020-09-25 14:37:44,182 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:37:44 WrapperNode [2020-09-25 14:37:44,182 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 14:37:44,183 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 14:37:44,183 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 14:37:44,183 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 14:37:44,201 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:37:44" (1/1) ... [2020-09-25 14:37:44,202 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:37:44" (1/1) ... [2020-09-25 14:37:44,220 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:37:44" (1/1) ... [2020-09-25 14:37:44,224 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:37:44" (1/1) ... [2020-09-25 14:37:44,261 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:37:44" (1/1) ... [2020-09-25 14:37:44,277 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:37:44" (1/1) ... [2020-09-25 14:37:44,281 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:37:44" (1/1) ... [2020-09-25 14:37:44,293 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 14:37:44,293 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 14:37:44,294 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 14:37:44,294 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 14:37:44,297 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:37:44" (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 14:37:44,376 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 14:37:44,376 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 14:37:44,376 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 14:37:44,376 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 14:37:44,377 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 14:37:44,377 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 14:37:44,377 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 14:37:44,377 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 14:37:44,377 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 14:37:44,377 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 14:37:44,378 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 14:37:45,731 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 14:37:45,731 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 14:37:45,740 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:37:45 BoogieIcfgContainer [2020-09-25 14:37:45,741 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 14:37:45,742 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 14:37:45,742 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 14:37:45,747 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 14:37:45,747 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:37:43" (1/3) ... [2020-09-25 14:37:45,748 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43ec6d71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:37:45, skipping insertion in model container [2020-09-25 14:37:45,749 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:37:44" (2/3) ... [2020-09-25 14:37:45,749 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43ec6d71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:37:45, skipping insertion in model container [2020-09-25 14:37:45,749 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:37:45" (3/3) ... [2020-09-25 14:37:45,752 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label50.c [2020-09-25 14:37:45,764 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 14:37:45,776 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 14:37:45,800 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 14:37:45,836 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 14:37:45,836 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 14:37:45,837 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 14:37:45,837 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 14:37:45,837 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 14:37:45,837 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 14:37:45,837 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 14:37:45,838 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 14:37:45,874 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 14:37:45,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-09-25 14:37:45,899 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:37:45,900 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] [2020-09-25 14:37:45,901 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:37:45,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:37:45,908 INFO L82 PathProgramCache]: Analyzing trace with hash 249673445, now seen corresponding path program 1 times [2020-09-25 14:37:45,918 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:37:45,918 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1523682103] [2020-09-25 14:37:45,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:37:46,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:46,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:46,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:47,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:48,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:49,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:49,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:50,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:51,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:51,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-09-25 14:37:51,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 14:37:51,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5044 [2020-09-25 14:37:51,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:51,303 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:51,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:37:51,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 14:37:51,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-09-25 14:37:51,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 14:37:51,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:37:51,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:51,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:51,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:51,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 14:37:51,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:37:51,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-25 14:37:51,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:51,537 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:51,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:37:51,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:37:51,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 14:37:51,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:37:51,593 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 14:37:51,594 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1523682103] [2020-09-25 14:37:51,596 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:37:51,597 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 14:37:51,598 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133676234] [2020-09-25 14:37:51,605 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:37:51,605 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:37:51,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:37:51,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:37:51,627 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 5 states. [2020-09-25 14:37:53,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:37:53,911 INFO L93 Difference]: Finished difference Result 1259 states and 1658 transitions. [2020-09-25 14:37:53,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 14:37:53,913 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 107 [2020-09-25 14:37:53,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:37:53,939 INFO L225 Difference]: With dead ends: 1259 [2020-09-25 14:37:53,940 INFO L226 Difference]: Without dead ends: 685 [2020-09-25 14:37:53,950 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 14:37:53,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 685 states. [2020-09-25 14:37:54,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 685 to 603. [2020-09-25 14:37:54,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2020-09-25 14:37:54,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 725 transitions. [2020-09-25 14:37:54,062 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 725 transitions. Word has length 107 [2020-09-25 14:37:54,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:37:54,063 INFO L479 AbstractCegarLoop]: Abstraction has 603 states and 725 transitions. [2020-09-25 14:37:54,063 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 14:37:54,063 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 725 transitions. [2020-09-25 14:37:54,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-09-25 14:37:54,070 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:37:54,070 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 14:37:54,071 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 14:37:54,071 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:37:54,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:37:54,072 INFO L82 PathProgramCache]: Analyzing trace with hash -191439372, now seen corresponding path program 1 times [2020-09-25 14:37:54,072 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:37:54,072 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1091992904] [2020-09-25 14:37:54,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:37:54,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:54,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:54,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:55,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:55,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:55,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:55,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:58,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:58,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-09-25 14:37:58,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 14:37:58,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4551 [2020-09-25 14:37:58,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:58,652 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:58,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:37:58,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 14:37:58,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-09-25 14:37:58,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 14:37:58,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:37:58,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:58,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:58,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:58,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 14:37:58,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:37:58,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 14:37:58,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:58,892 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:58,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:37:58,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:37:58,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:37:58,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:37:58,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 14:37:58,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:58,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:58,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:58,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 14:37:58,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:37:58,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 14:37:58,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:58,973 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:58,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:37:58,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:37:58,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 14:37:58,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:37:59,032 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:37:59,033 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1091992904] [2020-09-25 14:37:59,034 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:37:59,034 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 14:37:59,034 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475274954] [2020-09-25 14:37:59,036 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:37:59,037 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:37:59,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:37:59,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:37:59,038 INFO L87 Difference]: Start difference. First operand 603 states and 725 transitions. Second operand 5 states. [2020-09-25 14:38:01,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:38:01,293 INFO L93 Difference]: Finished difference Result 1499 states and 1884 transitions. [2020-09-25 14:38:01,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 14:38:01,299 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 128 [2020-09-25 14:38:01,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:38:01,310 INFO L225 Difference]: With dead ends: 1499 [2020-09-25 14:38:01,310 INFO L226 Difference]: Without dead ends: 920 [2020-09-25 14:38:01,313 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 14:38:01,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 920 states. [2020-09-25 14:38:01,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 920 to 748. [2020-09-25 14:38:01,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 748 states. [2020-09-25 14:38:01,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 748 states to 748 states and 899 transitions. [2020-09-25 14:38:01,360 INFO L78 Accepts]: Start accepts. Automaton has 748 states and 899 transitions. Word has length 128 [2020-09-25 14:38:01,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:38:01,361 INFO L479 AbstractCegarLoop]: Abstraction has 748 states and 899 transitions. [2020-09-25 14:38:01,361 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 14:38:01,362 INFO L276 IsEmpty]: Start isEmpty. Operand 748 states and 899 transitions. [2020-09-25 14:38:01,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-09-25 14:38:01,366 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:38:01,367 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 14:38:01,367 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 14:38:01,367 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:38:01,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:38:01,368 INFO L82 PathProgramCache]: Analyzing trace with hash 1459519869, now seen corresponding path program 1 times [2020-09-25 14:38:01,368 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:38:01,368 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [483354684] [2020-09-25 14:38:01,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:38:01,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:38:01,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:01,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:01,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:01,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:01,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:01,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:02,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:02,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:03,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:06,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:38:06,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-09-25 14:38:06,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 14:38:06,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-09-25 14:38:06,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:38:06,427 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:38:06,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:38:06,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-09-25 14:38:06,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-09-25 14:38:06,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:38:06,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:38:06,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:38:06,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:06,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:38:06,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 14:38:06,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:38:06,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 14:38:06,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:38:06,585 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:38:06,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:38:06,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:38:06,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:38:06,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:38:06,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 14:38:06,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:38:06,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:06,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:38:06,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 14:38:06,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:38:06,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 14:38:06,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:38:06,661 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:38:06,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:38:06,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:38:06,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 14:38:06,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:38:06,712 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:38:06,713 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [483354684] [2020-09-25 14:38:06,713 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:38:06,713 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 14:38:06,713 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803416153] [2020-09-25 14:38:06,715 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:38:06,716 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:38:06,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:38:06,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:38:06,717 INFO L87 Difference]: Start difference. First operand 748 states and 899 transitions. Second operand 5 states. [2020-09-25 14:38:08,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:38:08,883 INFO L93 Difference]: Finished difference Result 1934 states and 2420 transitions. [2020-09-25 14:38:08,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 14:38:08,884 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 132 [2020-09-25 14:38:08,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:38:08,892 INFO L225 Difference]: With dead ends: 1934 [2020-09-25 14:38:08,893 INFO L226 Difference]: Without dead ends: 1210 [2020-09-25 14:38:08,896 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 [2020-09-25 14:38:08,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1210 states. [2020-09-25 14:38:08,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1210 to 748. [2020-09-25 14:38:08,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 748 states. [2020-09-25 14:38:08,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 748 states to 748 states and 899 transitions. [2020-09-25 14:38:08,958 INFO L78 Accepts]: Start accepts. Automaton has 748 states and 899 transitions. Word has length 132 [2020-09-25 14:38:08,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:38:08,958 INFO L479 AbstractCegarLoop]: Abstraction has 748 states and 899 transitions. [2020-09-25 14:38:08,959 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 14:38:08,959 INFO L276 IsEmpty]: Start isEmpty. Operand 748 states and 899 transitions. [2020-09-25 14:38:08,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-09-25 14:38:08,962 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:38:08,963 INFO L422 BasicCegarLoop]: trace histogram [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 14:38:08,963 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 14:38:08,963 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:38:08,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:38:08,964 INFO L82 PathProgramCache]: Analyzing trace with hash -645015236, now seen corresponding path program 1 times [2020-09-25 14:38:08,964 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:38:08,964 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [831297111] [2020-09-25 14:38:08,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:38:08,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:38:09,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:09,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:09,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:09,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:09,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:09,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:09,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:10,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:38:10,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-09-25 14:38:10,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 14:38:10,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1671 [2020-09-25 14:38:10,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:38:10,674 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:38:10,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:38:10,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 14:38:10,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 14:38:10,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:38:10,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:38:10,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:38:10,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:10,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:38:10,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 14:38:10,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:38:10,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 14:38:10,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:38:10,805 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:38:10,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:38:10,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:38:10,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 14:38:10,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:38:10,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 14:38:10,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:38:10,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:10,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:38:10,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 14:38:10,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:38:10,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-09-25 14:38:10,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:38:10,916 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:38:10,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:38:10,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:38:10,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-25 14:38:10,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:38:10,970 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:38:10,972 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [831297111] [2020-09-25 14:38:10,973 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:38:10,973 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 14:38:10,974 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712330170] [2020-09-25 14:38:10,978 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 14:38:10,979 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:38:10,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 14:38:10,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:38:10,981 INFO L87 Difference]: Start difference. First operand 748 states and 899 transitions. Second operand 7 states. [2020-09-25 14:38:12,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:38:12,963 INFO L93 Difference]: Finished difference Result 1849 states and 2287 transitions. [2020-09-25 14:38:12,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 14:38:12,965 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 137 [2020-09-25 14:38:12,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:38:12,975 INFO L225 Difference]: With dead ends: 1849 [2020-09-25 14:38:12,975 INFO L226 Difference]: Without dead ends: 1125 [2020-09-25 14:38:12,979 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 14:38:12,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1125 states. [2020-09-25 14:38:13,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1125 to 1057. [2020-09-25 14:38:13,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1057 states. [2020-09-25 14:38:13,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1057 states to 1057 states and 1281 transitions. [2020-09-25 14:38:13,035 INFO L78 Accepts]: Start accepts. Automaton has 1057 states and 1281 transitions. Word has length 137 [2020-09-25 14:38:13,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:38:13,035 INFO L479 AbstractCegarLoop]: Abstraction has 1057 states and 1281 transitions. [2020-09-25 14:38:13,035 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 14:38:13,035 INFO L276 IsEmpty]: Start isEmpty. Operand 1057 states and 1281 transitions. [2020-09-25 14:38:13,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-09-25 14:38:13,040 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:38:13,040 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:38:13,040 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 14:38:13,041 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:38:13,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:38:13,041 INFO L82 PathProgramCache]: Analyzing trace with hash -583826406, now seen corresponding path program 1 times [2020-09-25 14:38:13,041 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:38:13,042 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [956007540] [2020-09-25 14:38:13,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:38:13,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:38:13,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:13,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:13,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:13,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:13,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:14,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:16,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:18,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:38:18,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-09-25 14:38:18,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 14:38:18,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-09-25 14:38:18,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:38:18,096 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:38:18,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:38:18,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-09-25 14:38:18,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-09-25 14:38:18,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:38:18,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:38:18,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:38:18,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:18,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:38:18,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 14:38:18,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:38:18,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 14:38:18,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:38:18,223 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:38:18,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:38:18,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:38:18,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:38:18,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:38:18,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 14:38:18,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:38:18,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:18,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:38:18,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 14:38:18,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:38:18,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-25 14:38:18,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:38:18,298 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:38:18,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:38:18,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:38:18,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 14:38:18,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:38:18,338 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 26 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:38:18,338 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [956007540] [2020-09-25 14:38:18,338 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:38:18,338 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 14:38:18,339 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91041409] [2020-09-25 14:38:18,339 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:38:18,339 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:38:18,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:38:18,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:38:18,340 INFO L87 Difference]: Start difference. First operand 1057 states and 1281 transitions. Second operand 5 states. [2020-09-25 14:38:20,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:38:20,424 INFO L93 Difference]: Finished difference Result 2879 states and 3631 transitions. [2020-09-25 14:38:20,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 14:38:20,424 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 142 [2020-09-25 14:38:20,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:38:20,438 INFO L225 Difference]: With dead ends: 2879 [2020-09-25 14:38:20,438 INFO L226 Difference]: Without dead ends: 1688 [2020-09-25 14:38:20,444 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 14:38:20,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1688 states. [2020-09-25 14:38:20,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1688 to 1621. [2020-09-25 14:38:20,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1621 states. [2020-09-25 14:38:20,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1621 states to 1621 states and 1992 transitions. [2020-09-25 14:38:20,511 INFO L78 Accepts]: Start accepts. Automaton has 1621 states and 1992 transitions. Word has length 142 [2020-09-25 14:38:20,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:38:20,511 INFO L479 AbstractCegarLoop]: Abstraction has 1621 states and 1992 transitions. [2020-09-25 14:38:20,511 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 14:38:20,511 INFO L276 IsEmpty]: Start isEmpty. Operand 1621 states and 1992 transitions. [2020-09-25 14:38:20,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-09-25 14:38:20,519 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:38:20,519 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 14:38:20,519 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 14:38:20,520 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:38:20,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:38:20,520 INFO L82 PathProgramCache]: Analyzing trace with hash 281598029, now seen corresponding path program 1 times [2020-09-25 14:38:20,520 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:38:20,521 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [562547232] [2020-09-25 14:38:20,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:38:20,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:38:20,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:20,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:20,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:21,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:21,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:21,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:24,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:38:24,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-09-25 14:38:24,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 14:38:24,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4390 [2020-09-25 14:38:24,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:38:24,945 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:38:24,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:38:24,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 14:38:24,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 14:38:24,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:38:25,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:38:25,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:38:25,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:25,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:38:25,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 14:38:25,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:38:25,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 14:38:25,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:38:25,040 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:38:25,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:38:25,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:38:25,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:38:25,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:38:25,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 14:38:25,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:38:25,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:25,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:38:25,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 14:38:25,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:38:25,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 14:38:25,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:38:25,105 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:38:25,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:38:25,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:38:25,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:38:25,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:38:25,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 14:38:25,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:38:25,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:25,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:38:25,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 14:38:25,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:38:25,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-09-25 14:38:25,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:38:25,206 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:38:25,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:38:25,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:38:25,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-25 14:38:25,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:38:25,406 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 44 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 14:38:25,407 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [562547232] [2020-09-25 14:38:25,408 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:38:25,408 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 14:38:25,409 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861726565] [2020-09-25 14:38:25,410 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 14:38:25,411 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:38:25,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 14:38:25,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:38:25,412 INFO L87 Difference]: Start difference. First operand 1621 states and 1992 transitions. Second operand 7 states. [2020-09-25 14:38:29,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:38:29,018 INFO L93 Difference]: Finished difference Result 4102 states and 5527 transitions. [2020-09-25 14:38:29,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 14:38:29,019 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 158 [2020-09-25 14:38:29,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:38:29,036 INFO L225 Difference]: With dead ends: 4102 [2020-09-25 14:38:29,036 INFO L226 Difference]: Without dead ends: 2291 [2020-09-25 14:38:29,046 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-25 14:38:29,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2291 states. [2020-09-25 14:38:29,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2291 to 2067. [2020-09-25 14:38:29,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2067 states. [2020-09-25 14:38:29,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2067 states to 2067 states and 2504 transitions. [2020-09-25 14:38:29,143 INFO L78 Accepts]: Start accepts. Automaton has 2067 states and 2504 transitions. Word has length 158 [2020-09-25 14:38:29,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:38:29,144 INFO L479 AbstractCegarLoop]: Abstraction has 2067 states and 2504 transitions. [2020-09-25 14:38:29,144 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 14:38:29,144 INFO L276 IsEmpty]: Start isEmpty. Operand 2067 states and 2504 transitions. [2020-09-25 14:38:29,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-09-25 14:38:29,152 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:38:29,153 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:38:29,153 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 14:38:29,153 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:38:29,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:38:29,153 INFO L82 PathProgramCache]: Analyzing trace with hash -1826646546, now seen corresponding path program 1 times [2020-09-25 14:38:29,154 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:38:29,154 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1881014521] [2020-09-25 14:38:29,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:38:29,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:38:29,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:29,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:29,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:29,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:30,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:38:30,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-09-25 14:38:30,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 14:38:30,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1176 [2020-09-25 14:38:30,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:38:30,348 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:38:30,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:38:30,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 14:38:30,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 14:38:30,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:38:30,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:38:30,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:38:30,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:30,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:38:30,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 14:38:30,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:38:30,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 14:38:30,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:38:30,445 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:38:30,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:38:30,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:38:30,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 14:38:30,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:38:30,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 14:38:30,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:38:30,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:30,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:38:30,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:38:30,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:38:30,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-09-25 14:38:30,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:38:30,528 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:38:30,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:38:30,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:38:30,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 14:38:30,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:38:30,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-25 14:38:30,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:38:30,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:30,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:38:30,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 14:38:30,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:38:30,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 14:38:30,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:38:30,587 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:38:30,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:38:30,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 14:38:30,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:38:30,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:38:30,628 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 28 proven. 4 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 14:38:30,629 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1881014521] [2020-09-25 14:38:30,629 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:38:30,629 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 14:38:30,631 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795673690] [2020-09-25 14:38:30,632 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 14:38:30,632 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:38:30,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 14:38:30,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:38:30,633 INFO L87 Difference]: Start difference. First operand 2067 states and 2504 transitions. Second operand 7 states.