/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=1000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --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/Problem10_label40.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 19:29:56,566 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 19:29:56,570 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 19:29:56,596 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 19:29:56,596 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 19:29:56,597 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 19:29:56,599 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 19:29:56,601 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 19:29:56,603 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 19:29:56,604 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 19:29:56,605 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 19:29:56,607 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 19:29:56,607 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 19:29:56,608 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 19:29:56,610 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 19:29:56,611 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 19:29:56,612 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 19:29:56,613 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 19:29:56,615 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 19:29:56,618 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 19:29:56,620 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 19:29:56,621 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 19:29:56,623 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 19:29:56,624 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 19:29:56,627 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 19:29:56,627 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 19:29:56,628 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 19:29:56,629 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 19:29:56,630 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 19:29:56,631 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 19:29:56,631 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 19:29:56,632 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 19:29:56,633 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 19:29:56,634 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 19:29:56,636 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 19:29:56,636 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 19:29:56,637 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 19:29:56,637 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 19:29:56,637 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 19:29:56,639 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 19:29:56,640 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 19:29:56,641 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 [2020-09-24 19:29:56,668 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 19:29:56,668 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 19:29:56,670 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 19:29:56,670 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 19:29:56,670 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 19:29:56,670 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 19:29:56,670 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 19:29:56,671 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 19:29:56,671 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 19:29:56,671 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 19:29:56,671 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 19:29:56,671 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 19:29:56,672 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 19:29:56,672 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 19:29:56,672 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 19:29:56,672 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 19:29:56,672 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 19:29:56,673 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 19:29:56,673 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 19:29:56,673 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 19:29:56,673 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 19:29:56,673 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 19:29:56,674 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 19:29:56,674 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 19:29:56,674 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 19:29:56,674 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 19:29:56,675 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 19:29:56,675 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 19:29:56,675 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 19:29:56,675 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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-24 19:29:57,207 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 19:29:57,232 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 19:29:57,236 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 19:29:57,239 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 19:29:57,241 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 19:29:57,242 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label40.c [2020-09-24 19:29:57,338 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/50c6e408d/eaaa3d26b7f7470dbe50eeea39dc3fbd/FLAGc8d7c7f21 [2020-09-24 19:29:57,995 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 19:29:57,996 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label40.c [2020-09-24 19:29:58,026 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/50c6e408d/eaaa3d26b7f7470dbe50eeea39dc3fbd/FLAGc8d7c7f21 [2020-09-24 19:29:58,225 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/50c6e408d/eaaa3d26b7f7470dbe50eeea39dc3fbd [2020-09-24 19:29:58,240 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 19:29:58,248 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 19:29:58,250 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 19:29:58,250 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 19:29:58,255 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 19:29:58,256 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 07:29:58" (1/1) ... [2020-09-24 19:29:58,261 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@406521a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:29:58, skipping insertion in model container [2020-09-24 19:29:58,261 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 07:29:58" (1/1) ... [2020-09-24 19:29:58,271 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 19:29:58,348 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 19:29:58,973 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 19:29:58,979 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 19:29:59,081 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 19:29:59,101 INFO L208 MainTranslator]: Completed translation [2020-09-24 19:29:59,103 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:29:59 WrapperNode [2020-09-24 19:29:59,103 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 19:29:59,104 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 19:29:59,104 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 19:29:59,104 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 19:29:59,119 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:29:59" (1/1) ... [2020-09-24 19:29:59,119 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:29:59" (1/1) ... [2020-09-24 19:29:59,138 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:29:59" (1/1) ... [2020-09-24 19:29:59,139 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:29:59" (1/1) ... [2020-09-24 19:29:59,183 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:29:59" (1/1) ... [2020-09-24 19:29:59,211 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:29:59" (1/1) ... [2020-09-24 19:29:59,222 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:29:59" (1/1) ... [2020-09-24 19:29:59,233 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 19:29:59,233 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 19:29:59,234 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 19:29:59,234 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 19:29:59,235 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:29:59" (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 [2020-09-24 19:29:59,337 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 19:29:59,337 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 19:29:59,338 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 19:29:59,338 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 19:29:59,338 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 19:29:59,338 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 19:29:59,338 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 19:29:59,338 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 19:29:59,340 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 19:29:59,340 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 19:29:59,340 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 19:30:00,784 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 19:30:00,785 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 19:30:00,793 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 07:30:00 BoogieIcfgContainer [2020-09-24 19:30:00,793 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 19:30:00,794 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 19:30:00,795 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 19:30:00,798 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 19:30:00,799 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 07:29:58" (1/3) ... [2020-09-24 19:30:00,800 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@267f05e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 07:30:00, skipping insertion in model container [2020-09-24 19:30:00,800 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:29:59" (2/3) ... [2020-09-24 19:30:00,801 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@267f05e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 07:30:00, skipping insertion in model container [2020-09-24 19:30:00,801 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 07:30:00" (3/3) ... [2020-09-24 19:30:00,803 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label40.c [2020-09-24 19:30:00,814 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 19:30:00,826 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 19:30:00,847 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 19:30:00,883 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 19:30:00,883 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 19:30:00,883 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 19:30:00,883 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 19:30:00,884 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 19:30:00,884 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 19:30:00,884 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 19:30:00,884 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 19:30:00,917 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-24 19:30:00,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-09-24 19:30:00,928 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:30:00,930 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] [2020-09-24 19:30:00,931 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:30:00,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:30:00,939 INFO L82 PathProgramCache]: Analyzing trace with hash 1046899727, now seen corresponding path program 1 times [2020-09-24 19:30:00,949 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:30:00,950 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1061909733] [2020-09-24 19:30:00,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:30:01,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:01,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:01,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:01,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-09-24 19:30:01,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:30:01,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 617 [2020-09-24 19:30:01,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:01,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 19:30:01,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 19:30:01,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-24 19:30:01,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 19:30:01,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:30:01,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:01,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:01,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:01,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:30:01,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:30:01,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-24 19:30:01,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:01,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:30:01,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:30:01,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 19:30:01,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:30:01,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:30:01,995 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1061909733] [2020-09-24 19:30:01,997 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:30:01,998 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 19:30:01,999 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623174695] [2020-09-24 19:30:02,005 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 19:30:02,006 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:30:02,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 19:30:02,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 19:30:02,027 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 5 states. [2020-09-24 19:30:04,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:30:04,831 INFO L93 Difference]: Finished difference Result 1226 states and 1797 transitions. [2020-09-24 19:30:04,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 19:30:04,834 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 68 [2020-09-24 19:30:04,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:30:04,859 INFO L225 Difference]: With dead ends: 1226 [2020-09-24 19:30:04,859 INFO L226 Difference]: Without dead ends: 707 [2020-09-24 19:30:04,873 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:30:04,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 707 states. [2020-09-24 19:30:04,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 707 to 695. [2020-09-24 19:30:04,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 695 states. [2020-09-24 19:30:04,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 926 transitions. [2020-09-24 19:30:04,980 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 926 transitions. Word has length 68 [2020-09-24 19:30:04,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:30:04,980 INFO L479 AbstractCegarLoop]: Abstraction has 695 states and 926 transitions. [2020-09-24 19:30:04,981 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 19:30:04,981 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 926 transitions. [2020-09-24 19:30:04,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-09-24 19:30:04,991 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:30:04,991 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:30:04,992 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 19:30:04,992 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:30:04,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:30:04,992 INFO L82 PathProgramCache]: Analyzing trace with hash -160289432, now seen corresponding path program 1 times [2020-09-24 19:30:04,993 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:30:04,993 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1213236038] [2020-09-24 19:30:04,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:30:05,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:05,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:05,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:05,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:06,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:06,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-09-24 19:30:06,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:30:06,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1000 [2020-09-24 19:30:06,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:06,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 19:30:06,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 19:30:06,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-24 19:30:06,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 19:30:06,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:30:06,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:06,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:06,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:06,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:30:06,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:30:06,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-24 19:30:06,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:06,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:30:06,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:30:06,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 19:30:06,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:30:06,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 19:30:06,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:06,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:06,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:06,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-24 19:30:06,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:30:06,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-09-24 19:30:06,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:06,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:30:06,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:30:06,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-24 19:30:06,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:30:06,414 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:30:06,415 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1213236038] [2020-09-24 19:30:06,416 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:30:06,416 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 19:30:06,416 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151592671] [2020-09-24 19:30:06,419 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:30:06,419 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:30:06,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:30:06,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:30:06,420 INFO L87 Difference]: Start difference. First operand 695 states and 926 transitions. Second operand 7 states. [2020-09-24 19:30:08,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:30:08,764 INFO L93 Difference]: Finished difference Result 1559 states and 2134 transitions. [2020-09-24 19:30:08,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 19:30:08,767 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 151 [2020-09-24 19:30:08,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:30:08,774 INFO L225 Difference]: With dead ends: 1559 [2020-09-24 19:30:08,775 INFO L226 Difference]: Without dead ends: 879 [2020-09-24 19:30:08,778 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-24 19:30:08,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 879 states. [2020-09-24 19:30:08,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 879 to 701. [2020-09-24 19:30:08,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 701 states. [2020-09-24 19:30:08,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 701 states to 701 states and 910 transitions. [2020-09-24 19:30:08,822 INFO L78 Accepts]: Start accepts. Automaton has 701 states and 910 transitions. Word has length 151 [2020-09-24 19:30:08,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:30:08,823 INFO L479 AbstractCegarLoop]: Abstraction has 701 states and 910 transitions. [2020-09-24 19:30:08,823 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:30:08,823 INFO L276 IsEmpty]: Start isEmpty. Operand 701 states and 910 transitions. [2020-09-24 19:30:08,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-09-24 19:30:08,827 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:30:08,827 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:30:08,827 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 19:30:08,827 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:30:08,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:30:08,828 INFO L82 PathProgramCache]: Analyzing trace with hash 1824017853, now seen corresponding path program 1 times [2020-09-24 19:30:08,828 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:30:08,829 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1157460124] [2020-09-24 19:30:08,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:30:08,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:08,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:09,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:09,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:09,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:09,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:09,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-09-24 19:30:09,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 19:30:09,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1024 [2020-09-24 19:30:09,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:09,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:30:09,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-09-24 19:30:09,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-09-24 19:30:09,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:30:09,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:30:09,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:09,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:09,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:09,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:30:09,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:30:09,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 19:30:09,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:09,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:30:09,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:30:09,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:30:09,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:30:10,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 19:30:10,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:10,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:10,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:10,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 19:30:10,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:30:10,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-09-24 19:30:10,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:10,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:30:10,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:30:10,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-24 19:30:10,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:30:10,192 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 51 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:30:10,193 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1157460124] [2020-09-24 19:30:10,193 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:30:10,193 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 19:30:10,194 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572714742] [2020-09-24 19:30:10,194 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 19:30:10,194 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:30:10,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 19:30:10,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 19:30:10,195 INFO L87 Difference]: Start difference. First operand 701 states and 910 transitions. Second operand 5 states. [2020-09-24 19:30:12,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:30:12,094 INFO L93 Difference]: Finished difference Result 1889 states and 2576 transitions. [2020-09-24 19:30:12,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 19:30:12,095 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 157 [2020-09-24 19:30:12,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:30:12,104 INFO L225 Difference]: With dead ends: 1889 [2020-09-24 19:30:12,104 INFO L226 Difference]: Without dead ends: 1203 [2020-09-24 19:30:12,107 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 19:30:12,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1203 states. [2020-09-24 19:30:12,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1203 to 1005. [2020-09-24 19:30:12,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1005 states. [2020-09-24 19:30:12,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1005 states to 1005 states and 1341 transitions. [2020-09-24 19:30:12,149 INFO L78 Accepts]: Start accepts. Automaton has 1005 states and 1341 transitions. Word has length 157 [2020-09-24 19:30:12,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:30:12,150 INFO L479 AbstractCegarLoop]: Abstraction has 1005 states and 1341 transitions. [2020-09-24 19:30:12,150 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 19:30:12,150 INFO L276 IsEmpty]: Start isEmpty. Operand 1005 states and 1341 transitions. [2020-09-24 19:30:12,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2020-09-24 19:30:12,155 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:30:12,155 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:30:12,156 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 19:30:12,156 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:30:12,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:30:12,156 INFO L82 PathProgramCache]: Analyzing trace with hash 1830974367, now seen corresponding path program 1 times [2020-09-24 19:30:12,157 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:30:12,157 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1874296775] [2020-09-24 19:30:12,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:30:12,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:12,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:12,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:12,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:13,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:13,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-09-24 19:30:13,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:30:13,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1054 [2020-09-24 19:30:13,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:13,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 19:30:13,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-24 19:30:13,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-09-24 19:30:13,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:30:13,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:30:13,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:13,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:13,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:13,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:30:13,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:30:13,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-24 19:30:13,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:13,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:30:13,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:30:13,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 19:30:13,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:30:13,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 19:30:13,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:13,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:13,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:13,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-09-24 19:30:13,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:30:13,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 209 [2020-09-24 19:30:13,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:13,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:30:13,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:30:13,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-09-24 19:30:13,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:30:13,703 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:30:13,703 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1874296775] [2020-09-24 19:30:13,703 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:30:13,704 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 19:30:13,704 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55343883] [2020-09-24 19:30:13,705 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:30:13,705 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:30:13,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:30:13,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:30:13,706 INFO L87 Difference]: Start difference. First operand 1005 states and 1341 transitions. Second operand 7 states. [2020-09-24 19:30:15,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:30:15,920 INFO L93 Difference]: Finished difference Result 2079 states and 2823 transitions. [2020-09-24 19:30:15,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 19:30:15,921 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 190 [2020-09-24 19:30:15,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:30:15,927 INFO L225 Difference]: With dead ends: 2079 [2020-09-24 19:30:15,928 INFO L226 Difference]: Without dead ends: 1089 [2020-09-24 19:30:15,932 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-24 19:30:15,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1089 states. [2020-09-24 19:30:15,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1089 to 1021. [2020-09-24 19:30:15,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1021 states. [2020-09-24 19:30:15,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1021 states to 1021 states and 1203 transitions. [2020-09-24 19:30:15,965 INFO L78 Accepts]: Start accepts. Automaton has 1021 states and 1203 transitions. Word has length 190 [2020-09-24 19:30:15,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:30:15,966 INFO L479 AbstractCegarLoop]: Abstraction has 1021 states and 1203 transitions. [2020-09-24 19:30:15,966 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:30:15,966 INFO L276 IsEmpty]: Start isEmpty. Operand 1021 states and 1203 transitions. [2020-09-24 19:30:15,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2020-09-24 19:30:15,969 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:30:15,970 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:30:15,970 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 19:30:15,970 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:30:15,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:30:15,971 INFO L82 PathProgramCache]: Analyzing trace with hash 1089799840, now seen corresponding path program 1 times [2020-09-24 19:30:15,971 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:30:15,971 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [199649564] [2020-09-24 19:30:15,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:30:16,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:16,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:16,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:16,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:17,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:17,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 206 [2020-09-24 19:30:17,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:30:17,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1025 [2020-09-24 19:30:17,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:17,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 19:30:17,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 19:30:17,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-09-24 19:30:17,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:30:17,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:30:17,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:17,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:17,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:17,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:30:17,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:30:17,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-24 19:30:17,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:17,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:30:17,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:30:17,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 19:30:17,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:30:17,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 19:30:17,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:17,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:17,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:17,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-09-24 19:30:17,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:30:17,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 290 [2020-09-24 19:30:17,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:17,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:30:17,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:30:17,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-09-24 19:30:17,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:30:17,648 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:30:17,648 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [199649564] [2020-09-24 19:30:17,649 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:30:17,649 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 19:30:17,649 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722074544] [2020-09-24 19:30:17,650 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:30:17,650 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:30:17,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:30:17,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:30:17,651 INFO L87 Difference]: Start difference. First operand 1021 states and 1203 transitions. Second operand 7 states. [2020-09-24 19:30:19,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:30:19,686 INFO L93 Difference]: Finished difference Result 2208 states and 2597 transitions. [2020-09-24 19:30:19,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-24 19:30:19,687 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 195 [2020-09-24 19:30:19,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:30:19,695 INFO L225 Difference]: With dead ends: 2208 [2020-09-24 19:30:19,695 INFO L226 Difference]: Without dead ends: 1202 [2020-09-24 19:30:19,698 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-09-24 19:30:19,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1202 states. [2020-09-24 19:30:19,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1202 to 1175. [2020-09-24 19:30:19,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1175 states. [2020-09-24 19:30:19,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1175 states to 1175 states and 1369 transitions. [2020-09-24 19:30:19,740 INFO L78 Accepts]: Start accepts. Automaton has 1175 states and 1369 transitions. Word has length 195 [2020-09-24 19:30:19,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:30:19,740 INFO L479 AbstractCegarLoop]: Abstraction has 1175 states and 1369 transitions. [2020-09-24 19:30:19,740 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:30:19,741 INFO L276 IsEmpty]: Start isEmpty. Operand 1175 states and 1369 transitions. [2020-09-24 19:30:19,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2020-09-24 19:30:19,746 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:30:19,747 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-24 19:30:19,747 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 19:30:19,747 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:30:19,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:30:19,748 INFO L82 PathProgramCache]: Analyzing trace with hash -585547793, now seen corresponding path program 1 times [2020-09-24 19:30:19,751 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:30:19,751 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [523988333] [2020-09-24 19:30:19,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:30:19,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:19,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:20,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:20,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:20,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:20,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 282 [2020-09-24 19:30:20,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:30:20,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1007 [2020-09-24 19:30:20,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:20,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 19:30:20,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-09-24 19:30:20,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 155 [2020-09-24 19:30:20,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:30:20,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:30:20,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:20,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:20,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:20,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:30:20,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:30:20,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 19:30:20,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:20,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:30:20,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:30:20,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:30:20,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:30:20,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 19:30:21,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:21,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:21,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:21,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-24 19:30:21,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:30:21,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-09-24 19:30:21,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:21,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:30:21,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:30:21,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-24 19:30:21,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:30:21,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-24 19:30:21,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:21,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:21,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:21,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:21,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-09-24 19:30:21,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 19:30:21,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 716 [2020-09-24 19:30:21,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:21,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 19:30:21,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:30:21,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-09-24 19:30:21,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:30:22,197 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 114 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2020-09-24 19:30:22,197 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [523988333] [2020-09-24 19:30:22,198 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:30:22,198 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 19:30:22,198 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640399423] [2020-09-24 19:30:22,199 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 19:30:22,199 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:30:22,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 19:30:22,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-24 19:30:22,200 INFO L87 Difference]: Start difference. First operand 1175 states and 1369 transitions. Second operand 8 states. [2020-09-24 19:30:26,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:30:26,084 INFO L93 Difference]: Finished difference Result 2703 states and 3269 transitions. [2020-09-24 19:30:26,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 19:30:26,084 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 269 [2020-09-24 19:30:26,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:30:26,093 INFO L225 Difference]: With dead ends: 2703 [2020-09-24 19:30:26,094 INFO L226 Difference]: Without dead ends: 1664 [2020-09-24 19:30:26,098 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2020-09-24 19:30:26,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1664 states. [2020-09-24 19:30:26,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1664 to 1638. [2020-09-24 19:30:26,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1638 states. [2020-09-24 19:30:26,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1638 states to 1638 states and 1920 transitions. [2020-09-24 19:30:26,144 INFO L78 Accepts]: Start accepts. Automaton has 1638 states and 1920 transitions. Word has length 269 [2020-09-24 19:30:26,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:30:26,144 INFO L479 AbstractCegarLoop]: Abstraction has 1638 states and 1920 transitions. [2020-09-24 19:30:26,145 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 19:30:26,145 INFO L276 IsEmpty]: Start isEmpty. Operand 1638 states and 1920 transitions. [2020-09-24 19:30:26,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2020-09-24 19:30:26,152 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:30:26,152 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-24 19:30:26,152 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 19:30:26,153 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:30:26,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:30:26,153 INFO L82 PathProgramCache]: Analyzing trace with hash -2003888, now seen corresponding path program 1 times [2020-09-24 19:30:26,153 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:30:26,154 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1977992255] [2020-09-24 19:30:26,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:30:26,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:26,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:26,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:27,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:27,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:27,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-09-24 19:30:27,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:30:27,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1040 [2020-09-24 19:30:27,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:27,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:30:27,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-09-24 19:30:27,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-09-24 19:30:27,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:30:27,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:30:27,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:27,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:27,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:27,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:30:27,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:30:27,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 19:30:27,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:27,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:30:27,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:30:27,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:30:27,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 19:30:27,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 19:30:27,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:27,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:27,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:27,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-24 19:30:27,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:30:27,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-09-24 19:30:27,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:27,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:30:27,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:30:27,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-24 19:30:27,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:30:27,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-24 19:30:27,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:27,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:27,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:27,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-09-24 19:30:27,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:30:27,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 283 [2020-09-24 19:30:27,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:27,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:30:27,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:30:27,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-09-24 19:30:27,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:30:28,071 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 177 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 19:30:28,072 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1977992255] [2020-09-24 19:30:28,072 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:30:28,072 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 19:30:28,074 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421553670] [2020-09-24 19:30:28,075 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:30:28,075 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:30:28,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:30:28,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:30:28,076 INFO L87 Difference]: Start difference. First operand 1638 states and 1920 transitions. Second operand 7 states. [2020-09-24 19:30:30,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:30:30,987 INFO L93 Difference]: Finished difference Result 3895 states and 4753 transitions. [2020-09-24 19:30:30,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 19:30:30,989 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 274 [2020-09-24 19:30:30,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:30:31,000 INFO L225 Difference]: With dead ends: 3895 [2020-09-24 19:30:31,000 INFO L226 Difference]: Without dead ends: 2422 [2020-09-24 19:30:31,005 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-24 19:30:31,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2422 states. [2020-09-24 19:30:31,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2422 to 1956. [2020-09-24 19:30:31,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1956 states. [2020-09-24 19:30:31,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1956 states to 1956 states and 2315 transitions. [2020-09-24 19:30:31,061 INFO L78 Accepts]: Start accepts. Automaton has 1956 states and 2315 transitions. Word has length 274 [2020-09-24 19:30:31,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:30:31,061 INFO L479 AbstractCegarLoop]: Abstraction has 1956 states and 2315 transitions. [2020-09-24 19:30:31,061 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:30:31,062 INFO L276 IsEmpty]: Start isEmpty. Operand 1956 states and 2315 transitions. [2020-09-24 19:30:31,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2020-09-24 19:30:31,069 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:30:31,070 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:30:31,070 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 19:30:31,070 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:30:31,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:30:31,071 INFO L82 PathProgramCache]: Analyzing trace with hash -1995565262, now seen corresponding path program 1 times [2020-09-24 19:30:31,071 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:30:31,071 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1505646120] [2020-09-24 19:30:31,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:30:31,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:31,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:31,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:31,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:32,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:32,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 297 [2020-09-24 19:30:32,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:30:32,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1031 [2020-09-24 19:30:32,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:32,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:30:32,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 106 [2020-09-24 19:30:32,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-09-24 19:30:32,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:30:32,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:30:32,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:32,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:32,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:32,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:30:32,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:30:32,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 19:30:32,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:32,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:30:32,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:30:32,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:30:32,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:30:32,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 19:30:32,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:32,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:32,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:32,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 19:30:32,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:30:32,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-09-24 19:30:32,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:32,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:30:32,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:30:32,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-24 19:30:32,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:30:32,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-24 19:30:32,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:32,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:32,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:32,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-09-24 19:30:32,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:30:32,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 254 [2020-09-24 19:30:32,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:32,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:30:32,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:30:32,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-09-24 19:30:32,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:30:32,922 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 186 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 19:30:32,922 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1505646120] [2020-09-24 19:30:32,923 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:30:32,923 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 19:30:32,923 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685081709] [2020-09-24 19:30:32,924 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:30:32,925 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:30:32,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:30:32,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:30:32,926 INFO L87 Difference]: Start difference. First operand 1956 states and 2315 transitions. Second operand 7 states. [2020-09-24 19:30:35,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:30:35,464 INFO L93 Difference]: Finished difference Result 5111 states and 6242 transitions. [2020-09-24 19:30:35,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 19:30:35,465 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 284 [2020-09-24 19:30:35,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:30:35,476 INFO L225 Difference]: With dead ends: 5111 [2020-09-24 19:30:35,476 INFO L226 Difference]: Without dead ends: 2494 [2020-09-24 19:30:35,483 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-09-24 19:30:35,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2494 states. [2020-09-24 19:30:35,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2494 to 1890. [2020-09-24 19:30:35,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1890 states. [2020-09-24 19:30:35,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1890 states to 1890 states and 2166 transitions. [2020-09-24 19:30:35,534 INFO L78 Accepts]: Start accepts. Automaton has 1890 states and 2166 transitions. Word has length 284 [2020-09-24 19:30:35,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:30:35,534 INFO L479 AbstractCegarLoop]: Abstraction has 1890 states and 2166 transitions. [2020-09-24 19:30:35,534 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:30:35,534 INFO L276 IsEmpty]: Start isEmpty. Operand 1890 states and 2166 transitions. [2020-09-24 19:30:35,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2020-09-24 19:30:35,543 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:30:35,543 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:30:35,544 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 19:30:35,544 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:30:35,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:30:35,544 INFO L82 PathProgramCache]: Analyzing trace with hash 1248385123, now seen corresponding path program 1 times [2020-09-24 19:30:35,545 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:30:35,545 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1140912033] [2020-09-24 19:30:35,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:30:35,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:35,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:36,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:36,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:36,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:36,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 332 [2020-09-24 19:30:36,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:30:36,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1000 [2020-09-24 19:30:36,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:36,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 19:30:36,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 139 [2020-09-24 19:30:36,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-09-24 19:30:36,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:30:36,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:30:36,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:36,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:36,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:36,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:30:36,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:30:36,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 19:30:36,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:36,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:30:36,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:30:36,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:30:36,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:30:36,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 19:30:36,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:36,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:37,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:37,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-09-24 19:30:37,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:30:37,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 247 [2020-09-24 19:30:37,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:37,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:30:37,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:30:37,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-09-24 19:30:37,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:30:37,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-09-24 19:30:37,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:37,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:37,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:37,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-09-24 19:30:37,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:30:37,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 229 [2020-09-24 19:30:37,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:37,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:30:37,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:30:37,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-09-24 19:30:37,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:30:37,645 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 222 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 19:30:37,645 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1140912033] [2020-09-24 19:30:37,645 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:30:37,645 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 19:30:37,646 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132353570] [2020-09-24 19:30:37,646 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 19:30:37,647 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:30:37,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 19:30:37,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-24 19:30:37,647 INFO L87 Difference]: Start difference. First operand 1890 states and 2166 transitions. Second operand 9 states. [2020-09-24 19:30:41,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:30:41,573 INFO L93 Difference]: Finished difference Result 5523 states and 6543 transitions. [2020-09-24 19:30:41,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-24 19:30:41,578 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 319 [2020-09-24 19:30:41,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:30:41,593 INFO L225 Difference]: With dead ends: 5523 [2020-09-24 19:30:41,593 INFO L226 Difference]: Without dead ends: 3798 [2020-09-24 19:30:41,598 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2020-09-24 19:30:41,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3798 states. [2020-09-24 19:30:41,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3798 to 2683. [2020-09-24 19:30:41,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2683 states. [2020-09-24 19:30:41,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2683 states to 2683 states and 3097 transitions. [2020-09-24 19:30:41,675 INFO L78 Accepts]: Start accepts. Automaton has 2683 states and 3097 transitions. Word has length 319 [2020-09-24 19:30:41,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:30:41,676 INFO L479 AbstractCegarLoop]: Abstraction has 2683 states and 3097 transitions. [2020-09-24 19:30:41,676 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 19:30:41,676 INFO L276 IsEmpty]: Start isEmpty. Operand 2683 states and 3097 transitions. [2020-09-24 19:30:41,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2020-09-24 19:30:41,686 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:30:41,687 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-24 19:30:41,687 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 19:30:41,687 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:30:41,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:30:41,688 INFO L82 PathProgramCache]: Analyzing trace with hash -2128216036, now seen corresponding path program 1 times [2020-09-24 19:30:41,688 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:30:41,688 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1297523083] [2020-09-24 19:30:41,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:30:41,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:41,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:42,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:42,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:42,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:42,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 350 [2020-09-24 19:30:42,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:30:42,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1039 [2020-09-24 19:30:42,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:42,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:30:42,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 286 [2020-09-24 19:30:42,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-09-24 19:30:42,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:30:42,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:30:42,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:42,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:42,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:42,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:30:42,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:30:42,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 19:30:42,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:42,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:30:42,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:30:42,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:30:42,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:30:42,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 19:30:42,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:42,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:42,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:42,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-09-24 19:30:42,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:30:42,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-24 19:30:42,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:42,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:30:42,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:30:42,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:30:42,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:30:43,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2020-09-24 19:30:43,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:43,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:43,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:43,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-09-24 19:30:43,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:30:43,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-09-24 19:30:43,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:43,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:30:43,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:30:43,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-09-24 19:30:43,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:30:43,288 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 107 proven. 2 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2020-09-24 19:30:43,288 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1297523083] [2020-09-24 19:30:43,288 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:30:43,289 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 19:30:43,289 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890040862] [2020-09-24 19:30:43,289 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 19:30:43,290 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:30:43,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 19:30:43,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 19:30:43,290 INFO L87 Difference]: Start difference. First operand 2683 states and 3097 transitions. Second operand 5 states. [2020-09-24 19:30:45,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:30:45,221 INFO L93 Difference]: Finished difference Result 6187 states and 7235 transitions. [2020-09-24 19:30:45,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 19:30:45,221 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 337 [2020-09-24 19:30:45,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:30:45,222 INFO L225 Difference]: With dead ends: 6187 [2020-09-24 19:30:45,222 INFO L226 Difference]: Without dead ends: 0 [2020-09-24 19:30:45,233 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 19:30:45,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-24 19:30:45,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-24 19:30:45,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-24 19:30:45,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-24 19:30:45,234 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 337 [2020-09-24 19:30:45,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:30:45,234 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-24 19:30:45,234 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 19:30:45,234 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-24 19:30:45,235 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-24 19:30:45,235 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-24 19:30:45,238 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-24 19:30:46,887 WARN L193 SmtUtils]: Spent 457.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 139 [2020-09-24 19:30:47,259 WARN L193 SmtUtils]: Spent 370.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 139 [2020-09-24 19:30:48,007 WARN L193 SmtUtils]: Spent 659.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 46