/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 --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/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 12:38:12,387 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 12:38:12,391 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 12:38:12,437 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 12:38:12,437 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 12:38:12,448 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 12:38:12,451 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 12:38:12,455 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 12:38:12,458 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 12:38:12,460 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 12:38:12,463 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 12:38:12,464 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 12:38:12,465 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 12:38:12,468 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 12:38:12,471 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 12:38:12,473 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 12:38:12,474 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 12:38:12,475 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 12:38:12,477 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 12:38:12,487 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 12:38:12,489 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 12:38:12,491 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 12:38:12,492 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 12:38:12,493 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 12:38:12,496 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 12:38:12,496 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 12:38:12,496 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 12:38:12,500 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 12:38:12,500 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 12:38:12,502 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 12:38:12,503 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 12:38:12,504 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 12:38:12,504 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 12:38:12,505 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 12:38:12,507 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 12:38:12,507 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 12:38:12,508 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 12:38:12,508 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 12:38:12,508 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 12:38:12,510 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 12:38:12,511 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 12:38:12,512 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 [2020-09-21 12:38:12,564 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 12:38:12,564 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 12:38:12,566 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 12:38:12,566 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 12:38:12,566 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 12:38:12,567 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 12:38:12,567 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 12:38:12,567 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 12:38:12,567 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 12:38:12,568 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 12:38:12,569 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 12:38:12,569 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 12:38:12,569 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 12:38:12,569 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 12:38:12,570 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 12:38:12,570 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 12:38:12,570 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 12:38:12,570 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 12:38:12,570 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 12:38:12,571 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 12:38:12,571 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 12:38:12,571 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 12:38:12,571 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 12:38:12,571 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 12:38:12,572 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 12:38:12,572 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 12:38:12,572 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 12:38:12,572 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 12:38:12,572 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 12:38:12,573 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.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; [2020-09-21 12:38:13,029 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 12:38:13,054 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 12:38:13,059 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 12:38:13,061 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 12:38:13,062 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 12:38:13,064 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-09-21 12:38:13,156 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4ab63878b/4c6d43476f7e4bb3993b37e0d28e47e7/FLAG63d866e5b [2020-09-21 12:38:13,833 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 12:38:13,834 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-09-21 12:38:13,857 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4ab63878b/4c6d43476f7e4bb3993b37e0d28e47e7/FLAG63d866e5b [2020-09-21 12:38:14,076 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4ab63878b/4c6d43476f7e4bb3993b37e0d28e47e7 [2020-09-21 12:38:14,091 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 12:38:14,097 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 12:38:14,099 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 12:38:14,100 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 12:38:14,104 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 12:38:14,105 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:38:14" (1/1) ... [2020-09-21 12:38:14,109 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e04f8f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:38:14, skipping insertion in model container [2020-09-21 12:38:14,109 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:38:14" (1/1) ... [2020-09-21 12:38:14,118 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 12:38:14,192 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 12:38:14,864 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:38:14,878 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 12:38:15,325 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:38:15,348 INFO L208 MainTranslator]: Completed translation [2020-09-21 12:38:15,349 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:38:15 WrapperNode [2020-09-21 12:38:15,349 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 12:38:15,350 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 12:38:15,350 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 12:38:15,350 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 12:38:15,368 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:38:15" (1/1) ... [2020-09-21 12:38:15,369 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:38:15" (1/1) ... [2020-09-21 12:38:15,391 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:38:15" (1/1) ... [2020-09-21 12:38:15,391 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:38:15" (1/1) ... [2020-09-21 12:38:15,425 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:38:15" (1/1) ... [2020-09-21 12:38:15,452 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:38:15" (1/1) ... [2020-09-21 12:38:15,458 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:38:15" (1/1) ... [2020-09-21 12:38:15,467 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 12:38:15,468 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 12:38:15,468 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 12:38:15,468 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 12:38:15,469 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:38:15" (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 [2020-09-21 12:38:15,573 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 12:38:15,574 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 12:38:15,574 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-21 12:38:15,574 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 12:38:15,575 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 12:38:15,575 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-21 12:38:15,575 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-09-21 12:38:15,575 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-09-21 12:38:15,576 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-21 12:38:15,576 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-21 12:38:15,576 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-09-21 12:38:15,577 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-09-21 12:38:15,577 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-09-21 12:38:15,577 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-09-21 12:38:15,577 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-09-21 12:38:15,578 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-09-21 12:38:15,578 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-09-21 12:38:15,579 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 12:38:15,579 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 12:38:15,579 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 12:38:17,341 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 12:38:17,341 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-21 12:38:17,349 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:38:17 BoogieIcfgContainer [2020-09-21 12:38:17,350 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 12:38:17,351 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 12:38:17,352 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 12:38:17,355 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 12:38:17,356 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 12:38:14" (1/3) ... [2020-09-21 12:38:17,357 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f0bf76c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:38:17, skipping insertion in model container [2020-09-21 12:38:17,357 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:38:15" (2/3) ... [2020-09-21 12:38:17,357 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f0bf76c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:38:17, skipping insertion in model container [2020-09-21 12:38:17,358 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:38:17" (3/3) ... [2020-09-21 12:38:17,360 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-09-21 12:38:17,375 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 12:38:17,388 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-09-21 12:38:17,415 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-09-21 12:38:17,457 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 12:38:17,457 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 12:38:17,457 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 12:38:17,458 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 12:38:17,458 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 12:38:17,458 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 12:38:17,458 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 12:38:17,458 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 12:38:17,492 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states. [2020-09-21 12:38:17,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-09-21 12:38:17,511 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:38:17,513 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:38:17,514 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:38:17,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:38:17,522 INFO L82 PathProgramCache]: Analyzing trace with hash -1152927299, now seen corresponding path program 1 times [2020-09-21 12:38:17,534 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:38:17,535 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [69572116] [2020-09-21 12:38:17,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:38:18,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:38:18,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:38:18,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:38:18,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:38:19,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:38:19,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:38:19,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-09-21 12:38:19,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-21 12:38:19,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1155 [2020-09-21 12:38:19,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:38:19,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:38:19,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-09-21 12:38:19,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-09-21 12:38:19,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-21 12:38:19,760 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-21 12:38:19,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:38:19,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:38:19,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:38:19,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:38:19,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:38:19,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:38:19,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-21 12:38:19,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:38:19,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:38:19,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:38:19,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:38:19,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:38:19,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:38:19,904 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [69572116] [2020-09-21 12:38:19,907 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:38:19,907 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 12:38:19,908 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380180594] [2020-09-21 12:38:19,914 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 12:38:19,915 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:38:19,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 12:38:19,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 12:38:19,939 INFO L87 Difference]: Start difference. First operand 376 states. Second operand 4 states. [2020-09-21 12:38:20,245 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-09-21 12:38:22,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:38:22,940 INFO L93 Difference]: Finished difference Result 684 states and 1212 transitions. [2020-09-21 12:38:22,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:38:22,943 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 137 [2020-09-21 12:38:22,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:38:22,972 INFO L225 Difference]: With dead ends: 684 [2020-09-21 12:38:22,974 INFO L226 Difference]: Without dead ends: 544 [2020-09-21 12:38:22,982 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:38:23,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 544 states. [2020-09-21 12:38:23,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 544 to 542. [2020-09-21 12:38:23,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 542 states. [2020-09-21 12:38:23,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 796 transitions. [2020-09-21 12:38:23,097 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 796 transitions. Word has length 137 [2020-09-21 12:38:23,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:38:23,101 INFO L479 AbstractCegarLoop]: Abstraction has 542 states and 796 transitions. [2020-09-21 12:38:23,101 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 12:38:23,101 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 796 transitions. [2020-09-21 12:38:23,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-09-21 12:38:23,110 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:38:23,111 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:38:23,111 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 12:38:23,111 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:38:23,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:38:23,112 INFO L82 PathProgramCache]: Analyzing trace with hash 801487942, now seen corresponding path program 1 times [2020-09-21 12:38:23,115 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:38:23,115 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1486042543] [2020-09-21 12:38:23,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:38:23,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:38:23,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:38:23,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:38:24,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:38:24,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:38:24,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:38:24,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:38:24,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-09-21 12:38:24,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-21 12:38:24,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1116 [2020-09-21 12:38:24,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:38:24,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 12:38:24,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-21 12:38:24,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-21 12:38:24,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:38:24,861 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-21 12:38:24,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:38:24,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:38:24,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:38:24,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:38:24,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:38:24,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:38:24,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-21 12:38:24,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:38:24,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:38:24,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:38:24,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:38:24,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:38:24,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:38:24,948 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1486042543] [2020-09-21 12:38:24,948 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:38:24,948 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-21 12:38:24,949 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45958727] [2020-09-21 12:38:24,951 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 12:38:24,951 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:38:24,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 12:38:24,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:38:24,952 INFO L87 Difference]: Start difference. First operand 542 states and 796 transitions. Second operand 5 states. [2020-09-21 12:38:28,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:38:28,640 INFO L93 Difference]: Finished difference Result 1558 states and 2279 transitions. [2020-09-21 12:38:28,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:38:28,641 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 137 [2020-09-21 12:38:28,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:38:28,648 INFO L225 Difference]: With dead ends: 1558 [2020-09-21 12:38:28,648 INFO L226 Difference]: Without dead ends: 1045 [2020-09-21 12:38:28,663 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-21 12:38:28,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1045 states. [2020-09-21 12:38:28,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1045 to 1018. [2020-09-21 12:38:28,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1018 states. [2020-09-21 12:38:28,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1018 states to 1018 states and 1490 transitions. [2020-09-21 12:38:28,752 INFO L78 Accepts]: Start accepts. Automaton has 1018 states and 1490 transitions. Word has length 137 [2020-09-21 12:38:28,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:38:28,753 INFO L479 AbstractCegarLoop]: Abstraction has 1018 states and 1490 transitions. [2020-09-21 12:38:28,753 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 12:38:28,753 INFO L276 IsEmpty]: Start isEmpty. Operand 1018 states and 1490 transitions. [2020-09-21 12:38:28,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-09-21 12:38:28,756 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:38:28,756 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:38:28,756 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 12:38:28,756 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:38:28,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:38:28,757 INFO L82 PathProgramCache]: Analyzing trace with hash -930136376, now seen corresponding path program 1 times [2020-09-21 12:38:28,757 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:38:28,758 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1422144599] [2020-09-21 12:38:28,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:38:28,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:38:28,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:38:28,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:38:29,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:38:29,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:38:29,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:38:29,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:38:29,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-09-21 12:38:29,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-21 12:38:29,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1002 [2020-09-21 12:38:29,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:38:29,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:38:29,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-21 12:38:29,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-21 12:38:29,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:38:30,132 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-21 12:38:30,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:38:30,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:38:30,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:38:30,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:38:30,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:38:30,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:38:30,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-21 12:38:30,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:38:30,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:38:30,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:38:30,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:38:30,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:38:30,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:38:30,202 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1422144599] [2020-09-21 12:38:30,202 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:38:30,202 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 12:38:30,203 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611395043] [2020-09-21 12:38:30,203 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 12:38:30,203 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:38:30,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 12:38:30,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 12:38:30,204 INFO L87 Difference]: Start difference. First operand 1018 states and 1490 transitions. Second operand 4 states. [2020-09-21 12:38:33,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:38:33,850 INFO L93 Difference]: Finished difference Result 3008 states and 4398 transitions. [2020-09-21 12:38:33,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-21 12:38:33,852 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 138 [2020-09-21 12:38:33,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:38:33,862 INFO L225 Difference]: With dead ends: 3008 [2020-09-21 12:38:33,862 INFO L226 Difference]: Without dead ends: 2022 [2020-09-21 12:38:33,865 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 12:38:33,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2022 states. [2020-09-21 12:38:33,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2022 to 1020. [2020-09-21 12:38:33,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1020 states. [2020-09-21 12:38:33,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1020 states to 1020 states and 1492 transitions. [2020-09-21 12:38:33,953 INFO L78 Accepts]: Start accepts. Automaton has 1020 states and 1492 transitions. Word has length 138 [2020-09-21 12:38:33,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:38:33,953 INFO L479 AbstractCegarLoop]: Abstraction has 1020 states and 1492 transitions. [2020-09-21 12:38:33,953 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 12:38:33,953 INFO L276 IsEmpty]: Start isEmpty. Operand 1020 states and 1492 transitions. [2020-09-21 12:38:33,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-09-21 12:38:33,959 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:38:33,959 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:38:33,959 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 12:38:33,960 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:38:33,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:38:33,961 INFO L82 PathProgramCache]: Analyzing trace with hash 2126861745, now seen corresponding path program 1 times [2020-09-21 12:38:33,961 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:38:33,962 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [76547576] [2020-09-21 12:38:33,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:38:34,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:38:34,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:38:34,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:38:34,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:38:34,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:38:34,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:38:34,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:38:35,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:38:35,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:38:35,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-09-21 12:38:35,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-21 12:38:35,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1089 [2020-09-21 12:38:35,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:38:35,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:38:35,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-21 12:38:35,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-09-21 12:38:35,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:38:35,443 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-21 12:38:35,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:38:35,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:38:35,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:38:35,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:38:35,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:38:35,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:38:35,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-21 12:38:35,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:38:35,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:38:35,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:38:35,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:38:35,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:38:35,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:38:35,575 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [76547576] [2020-09-21 12:38:35,575 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:38:35,576 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 12:38:35,576 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655000390] [2020-09-21 12:38:35,577 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 12:38:35,577 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:38:35,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 12:38:35,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 12:38:35,578 INFO L87 Difference]: Start difference. First operand 1020 states and 1492 transitions. Second operand 4 states. [2020-09-21 12:38:38,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:38:38,543 INFO L93 Difference]: Finished difference Result 2630 states and 3846 transitions. [2020-09-21 12:38:38,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-21 12:38:38,544 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 139 [2020-09-21 12:38:38,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:38:38,554 INFO L225 Difference]: With dead ends: 2630 [2020-09-21 12:38:38,554 INFO L226 Difference]: Without dead ends: 1780 [2020-09-21 12:38:38,556 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 12:38:38,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1780 states. [2020-09-21 12:38:38,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1780 to 1753. [2020-09-21 12:38:38,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1753 states. [2020-09-21 12:38:38,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1753 states to 1753 states and 2536 transitions. [2020-09-21 12:38:38,646 INFO L78 Accepts]: Start accepts. Automaton has 1753 states and 2536 transitions. Word has length 139 [2020-09-21 12:38:38,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:38:38,647 INFO L479 AbstractCegarLoop]: Abstraction has 1753 states and 2536 transitions. [2020-09-21 12:38:38,647 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 12:38:38,647 INFO L276 IsEmpty]: Start isEmpty. Operand 1753 states and 2536 transitions. [2020-09-21 12:38:38,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-09-21 12:38:38,651 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:38:38,651 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:38:38,651 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-21 12:38:38,652 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:38:38,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:38:38,652 INFO L82 PathProgramCache]: Analyzing trace with hash 1309552884, now seen corresponding path program 1 times [2020-09-21 12:38:38,652 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:38:38,653 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1008935069] [2020-09-21 12:38:38,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:38:38,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:38:38,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:38:39,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:38:39,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:38:39,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:38:39,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:38:39,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:38:39,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:38:39,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-09-21 12:38:39,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-21 12:38:39,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1021 [2020-09-21 12:38:39,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:38:39,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 12:38:39,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-21 12:38:39,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-09-21 12:38:39,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:38:40,147 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-21 12:38:40,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:38:40,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:38:40,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:38:40,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:38:40,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:38:40,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:38:40,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-21 12:38:40,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:38:40,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:38:40,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:38:40,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:38:40,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:38:40,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:38:40,246 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1008935069] [2020-09-21 12:38:40,246 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:38:40,246 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-21 12:38:40,246 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722461929] [2020-09-21 12:38:40,247 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 12:38:40,247 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:38:40,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 12:38:40,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:38:40,248 INFO L87 Difference]: Start difference. First operand 1753 states and 2536 transitions. Second operand 5 states. [2020-09-21 12:38:43,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:38:43,314 INFO L93 Difference]: Finished difference Result 5080 states and 7316 transitions. [2020-09-21 12:38:43,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:38:43,315 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 139 [2020-09-21 12:38:43,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:38:43,329 INFO L225 Difference]: With dead ends: 5080 [2020-09-21 12:38:43,329 INFO L226 Difference]: Without dead ends: 3369 [2020-09-21 12:38:43,333 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-21 12:38:43,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3369 states. [2020-09-21 12:38:43,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3369 to 3349. [2020-09-21 12:38:43,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3349 states. [2020-09-21 12:38:43,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3349 states to 3349 states and 4782 transitions. [2020-09-21 12:38:43,504 INFO L78 Accepts]: Start accepts. Automaton has 3349 states and 4782 transitions. Word has length 139 [2020-09-21 12:38:43,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:38:43,505 INFO L479 AbstractCegarLoop]: Abstraction has 3349 states and 4782 transitions. [2020-09-21 12:38:43,505 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 12:38:43,505 INFO L276 IsEmpty]: Start isEmpty. Operand 3349 states and 4782 transitions. [2020-09-21 12:38:43,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-09-21 12:38:43,512 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:38:43,512 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:38:43,512 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-21 12:38:43,512 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:38:43,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:38:43,513 INFO L82 PathProgramCache]: Analyzing trace with hash -489306057, now seen corresponding path program 1 times [2020-09-21 12:38:43,513 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:38:43,513 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [866295988] [2020-09-21 12:38:43,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:38:43,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:38:43,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:38:43,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:38:43,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:38:44,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:38:44,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:38:44,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:38:44,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:38:44,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:38:44,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:38:44,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-09-21 12:38:44,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-21 12:38:44,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1092 [2020-09-21 12:38:44,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:38:44,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:38:44,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-21 12:38:44,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:38:44,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-21 12:38:44,969 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-21 12:38:44,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:38:44,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:38:44,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:38:45,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:38:45,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:38:45,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:38:45,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-21 12:38:45,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:38:45,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:38:45,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:38:45,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:38:45,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:38:45,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:38:45,041 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [866295988] [2020-09-21 12:38:45,042 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:38:45,042 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 12:38:45,042 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420430870] [2020-09-21 12:38:45,043 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 12:38:45,043 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:38:45,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 12:38:45,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 12:38:45,043 INFO L87 Difference]: Start difference. First operand 3349 states and 4782 transitions. Second operand 4 states. [2020-09-21 12:38:47,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:38:47,001 INFO L93 Difference]: Finished difference Result 9723 states and 13904 transitions. [2020-09-21 12:38:47,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-21 12:38:47,001 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 140 [2020-09-21 12:38:47,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:38:47,029 INFO L225 Difference]: With dead ends: 9723 [2020-09-21 12:38:47,029 INFO L226 Difference]: Without dead ends: 6646 [2020-09-21 12:38:47,037 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 12:38:47,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6646 states. [2020-09-21 12:38:47,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6646 to 3361. [2020-09-21 12:38:47,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3361 states. [2020-09-21 12:38:47,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3361 states to 3361 states and 4798 transitions. [2020-09-21 12:38:47,258 INFO L78 Accepts]: Start accepts. Automaton has 3361 states and 4798 transitions. Word has length 140 [2020-09-21 12:38:47,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:38:47,259 INFO L479 AbstractCegarLoop]: Abstraction has 3361 states and 4798 transitions. [2020-09-21 12:38:47,259 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 12:38:47,259 INFO L276 IsEmpty]: Start isEmpty. Operand 3361 states and 4798 transitions. [2020-09-21 12:38:47,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-09-21 12:38:47,265 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:38:47,265 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:38:47,266 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-21 12:38:47,266 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:38:47,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:38:47,266 INFO L82 PathProgramCache]: Analyzing trace with hash 606575177, now seen corresponding path program 1 times [2020-09-21 12:38:47,267 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:38:47,267 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [73239372] [2020-09-21 12:38:47,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:38:47,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:38:47,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:38:47,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:38:47,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:38:47,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:38:47,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:38:48,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:38:48,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:38:48,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:38:48,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-09-21 12:38:48,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-21 12:38:48,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1020 [2020-09-21 12:38:48,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:38:48,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:38:48,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-21 12:38:48,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-21 12:38:48,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:38:48,697 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-21 12:38:48,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:38:48,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:38:48,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:38:48,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:38:48,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:38:48,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:38:48,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-21 12:38:48,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:38:48,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:38:48,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:38:48,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:38:48,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:38:48,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:38:48,809 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [73239372] [2020-09-21 12:38:48,809 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:38:48,810 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 12:38:48,810 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063467958] [2020-09-21 12:38:48,811 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 12:38:48,811 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:38:48,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 12:38:48,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 12:38:48,812 INFO L87 Difference]: Start difference. First operand 3361 states and 4798 transitions. Second operand 4 states. [2020-09-21 12:38:52,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:38:52,233 INFO L93 Difference]: Finished difference Result 9205 states and 13188 transitions. [2020-09-21 12:38:52,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-21 12:38:52,234 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 141 [2020-09-21 12:38:52,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:38:52,254 INFO L225 Difference]: With dead ends: 9205 [2020-09-21 12:38:52,254 INFO L226 Difference]: Without dead ends: 6296 [2020-09-21 12:38:52,260 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 12:38:52,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6296 states. [2020-09-21 12:38:52,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6296 to 6273. [2020-09-21 12:38:52,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6273 states. [2020-09-21 12:38:52,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6273 states to 6273 states and 8872 transitions. [2020-09-21 12:38:52,623 INFO L78 Accepts]: Start accepts. Automaton has 6273 states and 8872 transitions. Word has length 141 [2020-09-21 12:38:52,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:38:52,623 INFO L479 AbstractCegarLoop]: Abstraction has 6273 states and 8872 transitions. [2020-09-21 12:38:52,623 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 12:38:52,624 INFO L276 IsEmpty]: Start isEmpty. Operand 6273 states and 8872 transitions. [2020-09-21 12:38:52,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-09-21 12:38:52,633 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:38:52,634 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:38:52,634 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-21 12:38:52,634 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:38:52,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:38:52,635 INFO L82 PathProgramCache]: Analyzing trace with hash 1694163916, now seen corresponding path program 1 times [2020-09-21 12:38:52,635 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:38:52,635 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [755100940] [2020-09-21 12:38:52,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:38:52,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:38:52,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:38:53,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:38:53,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:38:53,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:38:53,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:38:53,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:38:53,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:38:53,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:38:53,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-09-21 12:38:53,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-21 12:38:53,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1097 [2020-09-21 12:38:53,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:38:53,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 12:38:53,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-21 12:38:53,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-21 12:38:53,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:38:54,273 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-21 12:38:54,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:38:54,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:38:54,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:38:54,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:38:54,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:38:54,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:38:54,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-21 12:38:54,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:38:54,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:38:54,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:38:54,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:38:54,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:38:54,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:38:54,361 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [755100940] [2020-09-21 12:38:54,361 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:38:54,361 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-21 12:38:54,362 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226298317] [2020-09-21 12:38:54,362 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 12:38:54,362 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:38:54,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 12:38:54,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:38:54,363 INFO L87 Difference]: Start difference. First operand 6273 states and 8872 transitions. Second operand 5 states. [2020-09-21 12:38:57,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:38:57,856 INFO L93 Difference]: Finished difference Result 18103 states and 25538 transitions. [2020-09-21 12:38:57,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:38:57,857 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 141 [2020-09-21 12:38:57,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:38:57,894 INFO L225 Difference]: With dead ends: 18103 [2020-09-21 12:38:57,894 INFO L226 Difference]: Without dead ends: 11958 [2020-09-21 12:38:57,904 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-21 12:38:57,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11958 states. [2020-09-21 12:38:58,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11958 to 11917. [2020-09-21 12:38:58,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11917 states. [2020-09-21 12:38:58,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11917 states to 11917 states and 16672 transitions. [2020-09-21 12:38:58,425 INFO L78 Accepts]: Start accepts. Automaton has 11917 states and 16672 transitions. Word has length 141 [2020-09-21 12:38:58,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:38:58,425 INFO L479 AbstractCegarLoop]: Abstraction has 11917 states and 16672 transitions. [2020-09-21 12:38:58,425 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 12:38:58,426 INFO L276 IsEmpty]: Start isEmpty. Operand 11917 states and 16672 transitions. [2020-09-21 12:38:58,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-09-21 12:38:58,444 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:38:58,444 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:38:58,444 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-21 12:38:58,444 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:38:58,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:38:58,445 INFO L82 PathProgramCache]: Analyzing trace with hash -920604333, now seen corresponding path program 1 times [2020-09-21 12:38:58,445 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:38:58,445 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1268459759] [2020-09-21 12:38:58,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:38:58,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:38:58,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:38:58,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:38:58,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:38:59,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:38:59,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:38:59,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:38:59,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-09-21 12:38:59,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-21 12:38:59,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1022 [2020-09-21 12:38:59,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:38:59,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 12:38:59,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-21 12:38:59,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-09-21 12:38:59,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:38:59,985 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-21 12:38:59,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:38:59,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:38:59,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:39:00,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:39:00,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:39:00,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:39:00,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-21 12:39:00,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:39:00,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:39:00,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:39:00,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:39:00,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:39:00,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:39:00,083 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1268459759] [2020-09-21 12:39:00,084 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:39:00,084 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-21 12:39:00,084 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527357629] [2020-09-21 12:39:00,084 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 12:39:00,085 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:39:00,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 12:39:00,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:39:00,085 INFO L87 Difference]: Start difference. First operand 11917 states and 16672 transitions. Second operand 5 states. [2020-09-21 12:39:04,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:39:04,444 INFO L93 Difference]: Finished difference Result 33419 states and 46756 transitions. [2020-09-21 12:39:04,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:39:04,445 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 141 [2020-09-21 12:39:04,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:39:04,491 INFO L225 Difference]: With dead ends: 33419 [2020-09-21 12:39:04,491 INFO L226 Difference]: Without dead ends: 22954 [2020-09-21 12:39:04,512 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-21 12:39:04,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22954 states.