/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 19:43:59,370 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 19:43:59,373 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 19:43:59,396 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 19:43:59,396 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 19:43:59,397 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 19:43:59,399 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 19:43:59,400 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 19:43:59,402 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 19:43:59,403 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 19:43:59,404 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 19:43:59,405 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 19:43:59,406 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 19:43:59,407 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 19:43:59,408 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 19:43:59,409 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 19:43:59,413 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 19:43:59,415 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 19:43:59,417 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 19:43:59,419 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 19:43:59,421 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 19:43:59,422 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 19:43:59,423 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 19:43:59,430 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 19:43:59,433 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 19:43:59,433 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 19:43:59,433 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 19:43:59,434 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 19:43:59,435 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 19:43:59,435 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 19:43:59,436 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 19:43:59,436 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 19:43:59,437 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 19:43:59,438 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 19:43:59,439 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 19:43:59,439 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 19:43:59,440 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 19:43:59,440 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 19:43:59,440 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 19:43:59,441 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 19:43:59,442 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 19:43:59,442 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-12 19:43:59,464 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 19:43:59,465 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 19:43:59,466 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 19:43:59,466 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 19:43:59,467 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 19:43:59,467 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 19:43:59,467 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 19:43:59,467 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 19:43:59,467 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 19:43:59,468 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 19:43:59,468 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 19:43:59,468 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 19:43:59,468 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 19:43:59,468 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 19:43:59,469 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 19:43:59,469 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 19:43:59,469 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 19:43:59,469 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 19:43:59,469 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 19:43:59,470 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 19:43:59,470 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 19:43:59,470 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 19:43:59,470 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 19:43:59,470 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 19:43:59,471 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 19:43:59,471 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 19:43:59,471 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 19:43:59,471 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 19:43:59,471 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 19:43:59,472 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 19:43:59,793 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 19:43:59,810 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 19:43:59,814 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 19:43:59,816 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 19:43:59,818 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 19:43:59,818 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c [2020-10-12 19:43:59,888 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1ae655765/ef3fd9a942064452a0791d6d002a29a1/FLAG83d4d5067 [2020-10-12 19:44:00,389 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 19:44:00,390 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c [2020-10-12 19:44:00,407 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1ae655765/ef3fd9a942064452a0791d6d002a29a1/FLAG83d4d5067 [2020-10-12 19:44:00,639 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1ae655765/ef3fd9a942064452a0791d6d002a29a1 [2020-10-12 19:44:00,650 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 19:44:00,652 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 19:44:00,654 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 19:44:00,654 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 19:44:00,659 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 19:44:00,660 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 07:44:00" (1/1) ... [2020-10-12 19:44:00,664 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c454e4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:44:00, skipping insertion in model container [2020-10-12 19:44:00,664 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 07:44:00" (1/1) ... [2020-10-12 19:44:00,673 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 19:44:00,744 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 19:44:01,113 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 19:44:01,126 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 19:44:01,347 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 19:44:01,378 INFO L208 MainTranslator]: Completed translation [2020-10-12 19:44:01,378 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:44:01 WrapperNode [2020-10-12 19:44:01,378 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 19:44:01,379 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 19:44:01,379 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 19:44:01,380 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 19:44:01,390 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:44:01" (1/1) ... [2020-10-12 19:44:01,391 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:44:01" (1/1) ... [2020-10-12 19:44:01,404 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:44:01" (1/1) ... [2020-10-12 19:44:01,405 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:44:01" (1/1) ... [2020-10-12 19:44:01,424 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:44:01" (1/1) ... [2020-10-12 19:44:01,438 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:44:01" (1/1) ... [2020-10-12 19:44:01,442 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:44:01" (1/1) ... [2020-10-12 19:44:01,448 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 19:44:01,449 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 19:44:01,449 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 19:44:01,449 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 19:44:01,450 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:44:01" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 19:44:01,521 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 19:44:01,522 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 19:44:01,522 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-12 19:44:01,522 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 19:44:01,522 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 19:44:01,522 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-12 19:44:01,522 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-12 19:44:01,523 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-12 19:44:01,523 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-12 19:44:01,523 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-12 19:44:01,523 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-12 19:44:01,523 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-12 19:44:01,523 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-12 19:44:01,524 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-12 19:44:01,524 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-12 19:44:01,524 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-12 19:44:01,524 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-12 19:44:01,524 INFO L130 BoogieDeclarations]: Found specification of procedure node6 [2020-10-12 19:44:01,524 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-12 19:44:01,525 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-12 19:44:01,525 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 19:44:01,525 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 19:44:01,525 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 19:44:02,368 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 19:44:02,368 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-12 19:44:02,374 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 07:44:02 BoogieIcfgContainer [2020-10-12 19:44:02,375 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 19:44:02,376 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 19:44:02,376 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 19:44:02,380 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 19:44:02,380 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 07:44:00" (1/3) ... [2020-10-12 19:44:02,381 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f9726e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 07:44:02, skipping insertion in model container [2020-10-12 19:44:02,381 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:44:01" (2/3) ... [2020-10-12 19:44:02,381 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f9726e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 07:44:02, skipping insertion in model container [2020-10-12 19:44:02,382 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 07:44:02" (3/3) ... [2020-10-12 19:44:02,383 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr.6.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c [2020-10-12 19:44:02,394 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 19:44:02,402 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 19:44:02,417 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 19:44:02,444 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 19:44:02,445 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 19:44:02,445 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 19:44:02,445 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 19:44:02,445 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 19:44:02,446 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 19:44:02,446 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 19:44:02,446 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 19:44:02,485 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states. [2020-10-12 19:44:02,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-12 19:44:02,496 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:44:02,498 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] [2020-10-12 19:44:02,498 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:44:02,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:44:02,504 INFO L82 PathProgramCache]: Analyzing trace with hash -541697796, now seen corresponding path program 1 times [2020-10-12 19:44:02,513 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:44:02,514 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [807097201] [2020-10-12 19:44:02,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:44:02,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:44:02,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:03,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:03,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:03,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:03,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:04,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:04,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:04,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:04,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:05,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:05,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:05,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:07,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:44:07,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-12 19:44:07,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-12 19:44:07,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-12 19:44:07,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:44:07,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 19:44:07,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-12 19:44:07,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-12 19:44:07,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-12 19:44:08,300 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-12 19:44:08,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:44:08,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:44:08,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:08,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:44:08,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:44:08,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:44:08,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-12 19:44:08,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:44:08,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:44:08,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:44:08,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:44:08,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:44:08,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:44:08,363 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [807097201] [2020-10-12 19:44:08,365 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:44:08,366 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 19:44:08,366 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761284028] [2020-10-12 19:44:08,371 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 19:44:08,372 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:44:08,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 19:44:08,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-12 19:44:08,389 INFO L87 Difference]: Start difference. First operand 183 states. Second operand 7 states. [2020-10-12 19:44:08,682 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-12 19:44:10,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:44:10,757 INFO L93 Difference]: Finished difference Result 920 states and 1490 transitions. [2020-10-12 19:44:10,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 19:44:10,759 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 95 [2020-10-12 19:44:10,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:44:10,790 INFO L225 Difference]: With dead ends: 920 [2020-10-12 19:44:10,791 INFO L226 Difference]: Without dead ends: 764 [2020-10-12 19:44:10,797 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-12 19:44:10,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 764 states. [2020-10-12 19:44:10,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 764 to 379. [2020-10-12 19:44:10,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 379 states. [2020-10-12 19:44:10,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 554 transitions. [2020-10-12 19:44:10,917 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 554 transitions. Word has length 95 [2020-10-12 19:44:10,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:44:10,918 INFO L479 AbstractCegarLoop]: Abstraction has 379 states and 554 transitions. [2020-10-12 19:44:10,919 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 19:44:10,919 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 554 transitions. [2020-10-12 19:44:10,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-12 19:44:10,930 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:44:10,930 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:44:10,931 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 19:44:10,931 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:44:10,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:44:10,933 INFO L82 PathProgramCache]: Analyzing trace with hash 697673707, now seen corresponding path program 1 times [2020-10-12 19:44:10,936 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:44:10,937 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2127101975] [2020-10-12 19:44:10,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:44:10,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:44:11,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:11,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:11,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:11,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:11,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:11,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:12,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:12,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:12,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:12,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:13,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:15,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:44:15,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-12 19:44:15,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-12 19:44:15,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-12 19:44:15,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:44:16,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 19:44:16,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-12 19:44:16,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-12 19:44:16,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-12 19:44:16,435 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-12 19:44:16,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:44:16,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:44:16,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:16,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:44:16,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:44:16,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:44:16,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 19:44:16,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:44:16,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:44:16,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:44:16,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:44:16,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:44:16,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:44:16,504 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2127101975] [2020-10-12 19:44:16,505 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:44:16,505 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 19:44:16,506 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385654135] [2020-10-12 19:44:16,508 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 19:44:16,509 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:44:16,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 19:44:16,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-12 19:44:16,511 INFO L87 Difference]: Start difference. First operand 379 states and 554 transitions. Second operand 7 states. [2020-10-12 19:44:16,814 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-12 19:44:18,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:44:18,710 INFO L93 Difference]: Finished difference Result 1821 states and 2829 transitions. [2020-10-12 19:44:18,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 19:44:18,711 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 96 [2020-10-12 19:44:18,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:44:18,725 INFO L225 Difference]: With dead ends: 1821 [2020-10-12 19:44:18,725 INFO L226 Difference]: Without dead ends: 1557 [2020-10-12 19:44:18,732 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-12 19:44:18,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1557 states. [2020-10-12 19:44:18,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1557 to 639. [2020-10-12 19:44:18,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 639 states. [2020-10-12 19:44:18,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 639 states to 639 states and 958 transitions. [2020-10-12 19:44:18,787 INFO L78 Accepts]: Start accepts. Automaton has 639 states and 958 transitions. Word has length 96 [2020-10-12 19:44:18,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:44:18,789 INFO L479 AbstractCegarLoop]: Abstraction has 639 states and 958 transitions. [2020-10-12 19:44:18,789 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 19:44:18,789 INFO L276 IsEmpty]: Start isEmpty. Operand 639 states and 958 transitions. [2020-10-12 19:44:18,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-12 19:44:18,792 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:44:18,793 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] [2020-10-12 19:44:18,793 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 19:44:18,793 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:44:18,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:44:18,794 INFO L82 PathProgramCache]: Analyzing trace with hash 310581276, now seen corresponding path program 1 times [2020-10-12 19:44:18,794 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:44:18,794 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [16237364] [2020-10-12 19:44:18,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:44:18,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:44:18,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:18,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:19,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:19,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:19,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:19,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:19,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:19,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:19,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:19,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:21,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:23,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:44:23,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-12 19:44:23,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-12 19:44:23,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-12 19:44:23,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:44:23,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 19:44:23,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-12 19:44:23,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-12 19:44:23,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:44:24,068 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-12 19:44:24,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:44:24,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:44:24,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:24,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:44:24,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:44:24,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:44:24,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 19:44:24,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:44:24,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:44:24,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:44:24,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:44:24,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:44:24,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:44:24,112 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [16237364] [2020-10-12 19:44:24,112 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:44:24,113 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 19:44:24,114 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471198316] [2020-10-12 19:44:24,115 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 19:44:24,116 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:44:24,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 19:44:24,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-12 19:44:24,117 INFO L87 Difference]: Start difference. First operand 639 states and 958 transitions. Second operand 7 states. [2020-10-12 19:44:24,341 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-12 19:44:26,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:44:26,238 INFO L93 Difference]: Finished difference Result 3522 states and 5503 transitions. [2020-10-12 19:44:26,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 19:44:26,239 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 96 [2020-10-12 19:44:26,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:44:26,255 INFO L225 Difference]: With dead ends: 3522 [2020-10-12 19:44:26,256 INFO L226 Difference]: Without dead ends: 3065 [2020-10-12 19:44:26,261 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-12 19:44:26,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3065 states. [2020-10-12 19:44:26,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3065 to 1148. [2020-10-12 19:44:26,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1148 states. [2020-10-12 19:44:26,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1148 states to 1148 states and 1748 transitions. [2020-10-12 19:44:26,358 INFO L78 Accepts]: Start accepts. Automaton has 1148 states and 1748 transitions. Word has length 96 [2020-10-12 19:44:26,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:44:26,361 INFO L479 AbstractCegarLoop]: Abstraction has 1148 states and 1748 transitions. [2020-10-12 19:44:26,361 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 19:44:26,361 INFO L276 IsEmpty]: Start isEmpty. Operand 1148 states and 1748 transitions. [2020-10-12 19:44:26,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-12 19:44:26,368 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:44:26,368 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] [2020-10-12 19:44:26,368 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 19:44:26,368 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:44:26,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:44:26,369 INFO L82 PathProgramCache]: Analyzing trace with hash -130949892, now seen corresponding path program 1 times [2020-10-12 19:44:26,371 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:44:26,373 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [901809858] [2020-10-12 19:44:26,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:44:26,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:44:26,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:26,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:26,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:26,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:26,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:26,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:26,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:31,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:44:31,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-12 19:44:31,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-12 19:44:31,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-12 19:44:31,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:44:31,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 19:44:31,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-12 19:44:31,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-12 19:44:31,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:44:31,632 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-12 19:44:31,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:44:31,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:44:31,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:31,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:44:31,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:44:31,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:44:31,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 19:44:31,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:44:31,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:44:31,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:44:31,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:44:31,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:44:31,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:44:31,680 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [901809858] [2020-10-12 19:44:31,681 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:44:31,681 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 19:44:31,682 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56180833] [2020-10-12 19:44:31,682 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 19:44:31,683 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:44:31,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 19:44:31,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-12 19:44:31,683 INFO L87 Difference]: Start difference. First operand 1148 states and 1748 transitions. Second operand 7 states. [2020-10-12 19:44:31,863 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-12 19:44:33,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:44:33,196 INFO L93 Difference]: Finished difference Result 3761 states and 5853 transitions. [2020-10-12 19:44:33,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 19:44:33,196 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 97 [2020-10-12 19:44:33,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:44:33,212 INFO L225 Difference]: With dead ends: 3761 [2020-10-12 19:44:33,213 INFO L226 Difference]: Without dead ends: 2886 [2020-10-12 19:44:33,216 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-12 19:44:33,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2886 states. [2020-10-12 19:44:33,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2886 to 1102. [2020-10-12 19:44:33,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1102 states. [2020-10-12 19:44:33,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1102 states to 1102 states and 1677 transitions. [2020-10-12 19:44:33,336 INFO L78 Accepts]: Start accepts. Automaton has 1102 states and 1677 transitions. Word has length 97 [2020-10-12 19:44:33,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:44:33,337 INFO L479 AbstractCegarLoop]: Abstraction has 1102 states and 1677 transitions. [2020-10-12 19:44:33,337 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 19:44:33,337 INFO L276 IsEmpty]: Start isEmpty. Operand 1102 states and 1677 transitions. [2020-10-12 19:44:33,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-12 19:44:33,339 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:44:33,339 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] [2020-10-12 19:44:33,341 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 19:44:33,341 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:44:33,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:44:33,342 INFO L82 PathProgramCache]: Analyzing trace with hash -706667812, now seen corresponding path program 1 times [2020-10-12 19:44:33,342 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:44:33,342 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [195435006] [2020-10-12 19:44:33,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:44:33,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:44:33,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:33,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:33,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:33,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:33,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:34,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:34,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:34,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:34,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:34,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:34,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:36,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:38,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:44:38,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-12 19:44:38,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-12 19:44:38,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-12 19:44:38,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:44:38,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 19:44:38,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:44:38,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-12 19:44:38,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:44:38,888 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-12 19:44:38,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:44:38,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:44:38,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:38,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:44:38,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:44:38,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:44:38,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 19:44:38,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:44:38,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:44:38,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:44:38,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:44:38,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:44:38,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:44:38,947 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [195435006] [2020-10-12 19:44:38,948 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:44:38,948 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-12 19:44:38,948 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423880789] [2020-10-12 19:44:38,949 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 19:44:38,949 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:44:38,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 19:44:38,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-12 19:44:38,950 INFO L87 Difference]: Start difference. First operand 1102 states and 1677 transitions. Second operand 11 states. [2020-10-12 19:44:39,227 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-12 19:44:42,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:44:42,901 INFO L93 Difference]: Finished difference Result 8614 states and 13501 transitions. [2020-10-12 19:44:42,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-12 19:44:42,902 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 97 [2020-10-12 19:44:42,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:44:42,953 INFO L225 Difference]: With dead ends: 8614 [2020-10-12 19:44:42,953 INFO L226 Difference]: Without dead ends: 7631 [2020-10-12 19:44:42,963 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=214, Invalid=716, Unknown=0, NotChecked=0, Total=930 [2020-10-12 19:44:42,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7631 states. [2020-10-12 19:44:43,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7631 to 1417. [2020-10-12 19:44:43,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1417 states. [2020-10-12 19:44:43,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1417 states to 1417 states and 2167 transitions. [2020-10-12 19:44:43,254 INFO L78 Accepts]: Start accepts. Automaton has 1417 states and 2167 transitions. Word has length 97 [2020-10-12 19:44:43,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:44:43,255 INFO L479 AbstractCegarLoop]: Abstraction has 1417 states and 2167 transitions. [2020-10-12 19:44:43,255 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 19:44:43,255 INFO L276 IsEmpty]: Start isEmpty. Operand 1417 states and 2167 transitions. [2020-10-12 19:44:43,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-12 19:44:43,257 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:44:43,257 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] [2020-10-12 19:44:43,258 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 19:44:43,258 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:44:43,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:44:43,258 INFO L82 PathProgramCache]: Analyzing trace with hash 2084160026, now seen corresponding path program 1 times [2020-10-12 19:44:43,259 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:44:43,259 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1641403377] [2020-10-12 19:44:43,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:44:43,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:44:43,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:43,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:43,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:43,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:44,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:44,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:44,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:45,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:45,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:46,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:47,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:48,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:44:48,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-12 19:44:48,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-12 19:44:48,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-12 19:44:48,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:44:48,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 19:44:48,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:44:48,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-12 19:44:48,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:44:48,925 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-12 19:44:48,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:44:48,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:44:48,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:48,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:44:48,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:44:48,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:44:48,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 19:44:48,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:44:48,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:44:48,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:44:48,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:44:48,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:44:49,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:44:49,034 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1641403377] [2020-10-12 19:44:49,034 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:44:49,034 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-12 19:44:49,034 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746232441] [2020-10-12 19:44:49,035 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 19:44:49,035 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:44:49,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 19:44:49,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-10-12 19:44:49,036 INFO L87 Difference]: Start difference. First operand 1417 states and 2167 transitions. Second operand 12 states. [2020-10-12 19:44:49,571 WARN L193 SmtUtils]: Spent 386.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-12 19:44:56,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:44:56,245 INFO L93 Difference]: Finished difference Result 13185 states and 20524 transitions. [2020-10-12 19:44:56,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-10-12 19:44:56,246 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 98 [2020-10-12 19:44:56,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:44:56,310 INFO L225 Difference]: With dead ends: 13185 [2020-10-12 19:44:56,311 INFO L226 Difference]: Without dead ends: 11940 [2020-10-12 19:44:56,319 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 835 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=531, Invalid=2331, Unknown=0, NotChecked=0, Total=2862 [2020-10-12 19:44:56,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11940 states. [2020-10-12 19:44:56,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11940 to 2112. [2020-10-12 19:44:56,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2112 states. [2020-10-12 19:44:56,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2112 states to 2112 states and 3225 transitions. [2020-10-12 19:44:56,811 INFO L78 Accepts]: Start accepts. Automaton has 2112 states and 3225 transitions. Word has length 98 [2020-10-12 19:44:56,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:44:56,811 INFO L479 AbstractCegarLoop]: Abstraction has 2112 states and 3225 transitions. [2020-10-12 19:44:56,811 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 19:44:56,811 INFO L276 IsEmpty]: Start isEmpty. Operand 2112 states and 3225 transitions. [2020-10-12 19:44:56,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-12 19:44:56,813 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:44:56,814 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] [2020-10-12 19:44:56,814 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 19:44:56,814 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:44:56,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:44:56,815 INFO L82 PathProgramCache]: Analyzing trace with hash -1792543980, now seen corresponding path program 1 times [2020-10-12 19:44:56,815 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:44:56,815 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [900865496] [2020-10-12 19:44:56,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:44:56,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:44:56,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:56,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:56,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:57,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:57,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:57,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:57,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:57,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:57,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:57,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:57,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:01,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:45:01,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-12 19:45:01,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-12 19:45:01,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-12 19:45:01,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:45:01,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 19:45:01,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:45:01,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-12 19:45:01,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:45:02,614 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-12 19:45:02,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:45:02,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:45:02,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:02,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:45:02,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:45:02,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:45:02,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 19:45:02,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:45:02,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:45:02,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:45:02,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:45:02,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:45:02,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:45:02,713 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [900865496] [2020-10-12 19:45:02,714 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:45:02,714 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-12 19:45:02,714 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925438337] [2020-10-12 19:45:02,715 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 19:45:02,715 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:45:02,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 19:45:02,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-10-12 19:45:02,716 INFO L87 Difference]: Start difference. First operand 2112 states and 3225 transitions. Second operand 12 states. [2020-10-12 19:45:03,084 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-12 19:45:03,415 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2020-10-12 19:45:03,590 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2020-10-12 19:45:03,797 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 57 [2020-10-12 19:45:03,971 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2020-10-12 19:45:04,177 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2020-10-12 19:45:04,523 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 61 [2020-10-12 19:45:05,100 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 61 [2020-10-12 19:45:05,252 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2020-10-12 19:45:07,329 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2020-10-12 19:45:07,552 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 61 [2020-10-12 19:45:08,121 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 64 [2020-10-12 19:45:08,414 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2020-10-12 19:45:11,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:45:11,347 INFO L93 Difference]: Finished difference Result 11013 states and 16964 transitions. [2020-10-12 19:45:11,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-12 19:45:11,347 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 99 [2020-10-12 19:45:11,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:45:11,370 INFO L225 Difference]: With dead ends: 11013 [2020-10-12 19:45:11,370 INFO L226 Difference]: Without dead ends: 9283 [2020-10-12 19:45:11,377 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 339 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=300, Invalid=1182, Unknown=0, NotChecked=0, Total=1482 [2020-10-12 19:45:11,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9283 states. [2020-10-12 19:45:11,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9283 to 2112. [2020-10-12 19:45:11,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2112 states. [2020-10-12 19:45:11,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2112 states to 2112 states and 3221 transitions. [2020-10-12 19:45:11,845 INFO L78 Accepts]: Start accepts. Automaton has 2112 states and 3221 transitions. Word has length 99 [2020-10-12 19:45:11,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:45:11,845 INFO L479 AbstractCegarLoop]: Abstraction has 2112 states and 3221 transitions. [2020-10-12 19:45:11,845 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 19:45:11,846 INFO L276 IsEmpty]: Start isEmpty. Operand 2112 states and 3221 transitions. [2020-10-12 19:45:11,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-12 19:45:11,847 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:45:11,848 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] [2020-10-12 19:45:11,848 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 19:45:11,848 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:45:11,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:45:11,849 INFO L82 PathProgramCache]: Analyzing trace with hash 1733788940, now seen corresponding path program 1 times [2020-10-12 19:45:11,849 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:45:11,849 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [278828968] [2020-10-12 19:45:11,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:45:11,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:45:11,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:11,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:11,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:11,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:12,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:12,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:14,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:14,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:14,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:14,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:14,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:14,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:15,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:15,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:15,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:16,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:45:16,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-12 19:45:16,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-12 19:45:16,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-12 19:45:16,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:45:16,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 19:45:16,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 19:45:16,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-12 19:45:16,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:45:17,310 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-12 19:45:17,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:45:17,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:45:17,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:17,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:45:17,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:45:17,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:45:17,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-12 19:45:17,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:45:17,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:45:17,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:45:17,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 19:45:17,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:45:17,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:45:17,382 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [278828968] [2020-10-12 19:45:17,382 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:45:17,382 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-12 19:45:17,383 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539835177] [2020-10-12 19:45:17,383 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 19:45:17,383 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:45:17,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 19:45:17,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2020-10-12 19:45:17,384 INFO L87 Difference]: Start difference. First operand 2112 states and 3221 transitions. Second operand 13 states. [2020-10-12 19:45:17,958 WARN L193 SmtUtils]: Spent 480.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 173 [2020-10-12 19:45:26,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:45:26,760 INFO L93 Difference]: Finished difference Result 18518 states and 27961 transitions. [2020-10-12 19:45:26,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-10-12 19:45:26,761 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 99 [2020-10-12 19:45:26,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:45:26,800 INFO L225 Difference]: With dead ends: 18518 [2020-10-12 19:45:26,800 INFO L226 Difference]: Without dead ends: 16751 [2020-10-12 19:45:26,810 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1026 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=647, Invalid=2433, Unknown=0, NotChecked=0, Total=3080 [2020-10-12 19:45:26,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16751 states. [2020-10-12 19:45:27,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16751 to 2097. [2020-10-12 19:45:27,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2097 states. [2020-10-12 19:45:27,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2097 states to 2097 states and 3185 transitions. [2020-10-12 19:45:27,394 INFO L78 Accepts]: Start accepts. Automaton has 2097 states and 3185 transitions. Word has length 99 [2020-10-12 19:45:27,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:45:27,394 INFO L479 AbstractCegarLoop]: Abstraction has 2097 states and 3185 transitions. [2020-10-12 19:45:27,394 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 19:45:27,395 INFO L276 IsEmpty]: Start isEmpty. Operand 2097 states and 3185 transitions. [2020-10-12 19:45:27,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-12 19:45:27,396 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:45:27,397 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] [2020-10-12 19:45:27,397 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 19:45:27,397 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:45:27,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:45:27,397 INFO L82 PathProgramCache]: Analyzing trace with hash 1396642908, now seen corresponding path program 1 times [2020-10-12 19:45:27,398 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:45:27,398 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [461369148] [2020-10-12 19:45:27,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:45:27,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:45:27,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:27,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:27,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:27,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:27,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:28,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:29,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:30,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:30,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:30,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:30,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:30,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:30,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:30,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:32,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:45:32,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-12 19:45:32,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-12 19:45:32,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-12 19:45:32,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:45:32,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 19:45:32,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:45:32,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-12 19:45:32,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:45:32,986 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-12 19:45:32,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:45:32,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:45:32,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:32,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:45:32,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:45:32,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:45:32,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 19:45:32,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:45:32,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:45:32,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:45:32,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:45:33,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:45:33,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:45:33,048 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [461369148] [2020-10-12 19:45:33,048 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:45:33,048 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-12 19:45:33,048 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510415314] [2020-10-12 19:45:33,049 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 19:45:33,049 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:45:33,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 19:45:33,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-10-12 19:45:33,050 INFO L87 Difference]: Start difference. First operand 2097 states and 3185 transitions. Second operand 12 states. [2020-10-12 19:45:33,393 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-12 19:45:40,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:45:40,521 INFO L93 Difference]: Finished difference Result 9365 states and 14525 transitions. [2020-10-12 19:45:40,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-12 19:45:40,521 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 100 [2020-10-12 19:45:40,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:45:40,538 INFO L225 Difference]: With dead ends: 9365 [2020-10-12 19:45:40,538 INFO L226 Difference]: Without dead ends: 7723 [2020-10-12 19:45:40,548 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 471 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=368, Invalid=1438, Unknown=0, NotChecked=0, Total=1806 [2020-10-12 19:45:40,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7723 states. [2020-10-12 19:45:41,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7723 to 2095. [2020-10-12 19:45:41,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2095 states. [2020-10-12 19:45:41,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2095 states to 2095 states and 3185 transitions. [2020-10-12 19:45:41,143 INFO L78 Accepts]: Start accepts. Automaton has 2095 states and 3185 transitions. Word has length 100 [2020-10-12 19:45:41,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:45:41,144 INFO L479 AbstractCegarLoop]: Abstraction has 2095 states and 3185 transitions. [2020-10-12 19:45:41,144 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 19:45:41,144 INFO L276 IsEmpty]: Start isEmpty. Operand 2095 states and 3185 transitions. [2020-10-12 19:45:41,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-12 19:45:41,146 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:45:41,147 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] [2020-10-12 19:45:41,147 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 19:45:41,147 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:45:41,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:45:41,147 INFO L82 PathProgramCache]: Analyzing trace with hash -67914405, now seen corresponding path program 1 times [2020-10-12 19:45:41,148 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:45:41,148 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [435571736] [2020-10-12 19:45:41,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:45:41,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:45:41,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:41,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:41,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:41,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:41,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:41,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:43,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:43,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:43,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:43,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:43,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:43,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:43,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:43,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:46,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:45:46,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-12 19:45:46,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-12 19:45:46,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-12 19:45:46,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:45:46,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 19:45:46,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 19:45:46,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-12 19:45:46,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:45:46,686 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-12 19:45:46,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:45:46,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:45:46,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:46,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:45:46,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:45:46,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:45:46,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 19:45:46,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:45:46,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:45:46,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:45:46,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 19:45:46,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:45:46,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:45:46,739 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [435571736] [2020-10-12 19:45:46,739 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:45:46,739 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-10-12 19:45:46,740 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738857198] [2020-10-12 19:45:46,740 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-12 19:45:46,740 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:45:46,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-12 19:45:46,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2020-10-12 19:45:46,741 INFO L87 Difference]: Start difference. First operand 2095 states and 3185 transitions. Second operand 16 states. [2020-10-12 19:45:47,294 WARN L193 SmtUtils]: Spent 447.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 176 [2020-10-12 19:45:51,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:45:51,073 INFO L93 Difference]: Finished difference Result 3813 states and 5856 transitions. [2020-10-12 19:45:51,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-12 19:45:51,074 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 100 [2020-10-12 19:45:51,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:45:51,079 INFO L225 Difference]: With dead ends: 3813 [2020-10-12 19:45:51,079 INFO L226 Difference]: Without dead ends: 1991 [2020-10-12 19:45:51,083 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 328 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=317, Invalid=1243, Unknown=0, NotChecked=0, Total=1560 [2020-10-12 19:45:51,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1991 states. [2020-10-12 19:45:51,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1991 to 1406. [2020-10-12 19:45:51,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1406 states. [2020-10-12 19:45:51,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1406 states to 1406 states and 2134 transitions. [2020-10-12 19:45:51,507 INFO L78 Accepts]: Start accepts. Automaton has 1406 states and 2134 transitions. Word has length 100 [2020-10-12 19:45:51,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:45:51,508 INFO L479 AbstractCegarLoop]: Abstraction has 1406 states and 2134 transitions. [2020-10-12 19:45:51,508 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-12 19:45:51,508 INFO L276 IsEmpty]: Start isEmpty. Operand 1406 states and 2134 transitions. [2020-10-12 19:45:51,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-12 19:45:51,509 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:45:51,510 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] [2020-10-12 19:45:51,510 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 19:45:51,510 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:45:51,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:45:51,510 INFO L82 PathProgramCache]: Analyzing trace with hash 694014628, now seen corresponding path program 1 times [2020-10-12 19:45:51,511 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:45:51,511 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1978896021] [2020-10-12 19:45:51,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:45:51,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:45:51,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:51,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:51,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:51,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:52,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:52,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:53,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:53,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:53,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:54,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:54,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:54,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:54,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:55,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:55,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:55,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:56,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:56,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:45:56,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-12 19:45:56,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-12 19:45:56,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-12 19:45:56,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:45:56,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 19:45:56,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 19:45:56,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-12 19:45:56,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:45:56,767 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 27 [2020-10-12 19:45:57,074 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-12 19:45:57,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:45:57,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:45:57,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:57,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:45:57,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:45:57,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:45:57,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 19:45:57,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:45:57,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:45:57,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:45:57,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:45:57,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:45:57,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:45:57,107 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1978896021] [2020-10-12 19:45:57,107 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:45:57,107 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-10-12 19:45:57,107 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998134043] [2020-10-12 19:45:57,108 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-12 19:45:57,108 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:45:57,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-12 19:45:57,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2020-10-12 19:45:57,109 INFO L87 Difference]: Start difference. First operand 1406 states and 2134 transitions. Second operand 15 states. [2020-10-12 19:45:57,650 WARN L193 SmtUtils]: Spent 430.00 ms on a formula simplification. DAG size of input: 175 DAG size of output: 174 [2020-10-12 19:46:06,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:46:06,865 INFO L93 Difference]: Finished difference Result 15955 states and 24665 transitions. [2020-10-12 19:46:06,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2020-10-12 19:46:06,870 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 100 [2020-10-12 19:46:06,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:46:06,890 INFO L225 Difference]: With dead ends: 15955 [2020-10-12 19:46:06,890 INFO L226 Difference]: Without dead ends: 14782 [2020-10-12 19:46:06,899 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 908 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=540, Invalid=2766, Unknown=0, NotChecked=0, Total=3306 [2020-10-12 19:46:06,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14782 states. [2020-10-12 19:46:08,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14782 to 2180. [2020-10-12 19:46:08,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2180 states. [2020-10-12 19:46:08,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2180 states to 2180 states and 3289 transitions. [2020-10-12 19:46:08,123 INFO L78 Accepts]: Start accepts. Automaton has 2180 states and 3289 transitions. Word has length 100 [2020-10-12 19:46:08,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:46:08,123 INFO L479 AbstractCegarLoop]: Abstraction has 2180 states and 3289 transitions. [2020-10-12 19:46:08,123 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-12 19:46:08,123 INFO L276 IsEmpty]: Start isEmpty. Operand 2180 states and 3289 transitions. [2020-10-12 19:46:08,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-12 19:46:08,126 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:46:08,126 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] [2020-10-12 19:46:08,126 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 19:46:08,126 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:46:08,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:46:08,126 INFO L82 PathProgramCache]: Analyzing trace with hash 417983618, now seen corresponding path program 1 times [2020-10-12 19:46:08,127 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:46:08,127 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1837037355] [2020-10-12 19:46:08,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:46:08,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:46:08,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:08,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:08,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:08,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:08,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:08,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:10,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:10,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:10,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:13,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:46:13,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-12 19:46:13,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-12 19:46:13,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-12 19:46:13,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:46:13,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 19:46:13,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 19:46:13,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-12 19:46:13,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:46:13,385 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-12 19:46:13,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:46:13,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:46:13,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:13,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:46:13,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:46:13,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:46:13,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 19:46:13,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:46:13,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:46:13,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:46:13,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:46:13,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:46:13,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:46:13,416 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1837037355] [2020-10-12 19:46:13,416 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:46:13,416 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-12 19:46:13,416 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049847884] [2020-10-12 19:46:13,417 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 19:46:13,417 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:46:13,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 19:46:13,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-12 19:46:13,417 INFO L87 Difference]: Start difference. First operand 2180 states and 3289 transitions. Second operand 9 states. [2020-10-12 19:46:13,657 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-12 19:46:21,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:46:21,050 INFO L93 Difference]: Finished difference Result 22796 states and 35449 transitions. [2020-10-12 19:46:21,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-12 19:46:21,051 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 101 [2020-10-12 19:46:21,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:46:21,072 INFO L225 Difference]: With dead ends: 22796 [2020-10-12 19:46:21,072 INFO L226 Difference]: Without dead ends: 21178 [2020-10-12 19:46:21,079 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=111, Invalid=231, Unknown=0, NotChecked=0, Total=342 [2020-10-12 19:46:21,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21178 states. [2020-10-12 19:46:22,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21178 to 4179. [2020-10-12 19:46:22,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4179 states. [2020-10-12 19:46:22,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4179 states to 4179 states and 6329 transitions. [2020-10-12 19:46:22,588 INFO L78 Accepts]: Start accepts. Automaton has 4179 states and 6329 transitions. Word has length 101 [2020-10-12 19:46:22,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:46:22,588 INFO L479 AbstractCegarLoop]: Abstraction has 4179 states and 6329 transitions. [2020-10-12 19:46:22,588 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 19:46:22,589 INFO L276 IsEmpty]: Start isEmpty. Operand 4179 states and 6329 transitions. [2020-10-12 19:46:22,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-12 19:46:22,591 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:46:22,591 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] [2020-10-12 19:46:22,592 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 19:46:22,592 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:46:22,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:46:22,592 INFO L82 PathProgramCache]: Analyzing trace with hash 1132753039, now seen corresponding path program 1 times [2020-10-12 19:46:22,592 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:46:22,593 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [227349317] [2020-10-12 19:46:22,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:46:22,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:46:22,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:22,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:22,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:22,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:23,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:23,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:23,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:27,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:46:27,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-12 19:46:27,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-12 19:46:27,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-12 19:46:27,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:46:27,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 19:46:27,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:46:27,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-12 19:46:27,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:46:28,121 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-12 19:46:28,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:46:28,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:46:28,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:28,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:46:28,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:46:28,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:46:28,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 19:46:28,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:46:28,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:46:28,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:46:28,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:46:28,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:46:28,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:46:28,161 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [227349317] [2020-10-12 19:46:28,161 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:46:28,162 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-12 19:46:28,162 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810752447] [2020-10-12 19:46:28,162 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 19:46:28,162 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:46:28,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 19:46:28,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-12 19:46:28,163 INFO L87 Difference]: Start difference. First operand 4179 states and 6329 transitions. Second operand 10 states. [2020-10-12 19:46:28,388 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-12 19:46:30,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:46:30,691 INFO L93 Difference]: Finished difference Result 7561 states and 11563 transitions. [2020-10-12 19:46:30,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 19:46:30,692 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 102 [2020-10-12 19:46:30,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:46:30,697 INFO L225 Difference]: With dead ends: 7561 [2020-10-12 19:46:30,697 INFO L226 Difference]: Without dead ends: 4181 [2020-10-12 19:46:30,704 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2020-10-12 19:46:30,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4181 states. [2020-10-12 19:46:31,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4181 to 4179. [2020-10-12 19:46:31,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4179 states. [2020-10-12 19:46:31,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4179 states to 4179 states and 6305 transitions. [2020-10-12 19:46:31,921 INFO L78 Accepts]: Start accepts. Automaton has 4179 states and 6305 transitions. Word has length 102 [2020-10-12 19:46:31,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:46:31,921 INFO L479 AbstractCegarLoop]: Abstraction has 4179 states and 6305 transitions. [2020-10-12 19:46:31,921 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 19:46:31,921 INFO L276 IsEmpty]: Start isEmpty. Operand 4179 states and 6305 transitions. [2020-10-12 19:46:31,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-12 19:46:31,925 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:46:31,926 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] [2020-10-12 19:46:31,926 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-12 19:46:31,926 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:46:31,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:46:31,926 INFO L82 PathProgramCache]: Analyzing trace with hash -1149382707, now seen corresponding path program 1 times [2020-10-12 19:46:31,926 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:46:31,927 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2032788334] [2020-10-12 19:46:31,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:46:31,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:46:31,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:31,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:32,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:32,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:32,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:32,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:34,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:34,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:34,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:34,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:35,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:35,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:36,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:36,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:36,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:46:36,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-12 19:46:36,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-12 19:46:36,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-12 19:46:36,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:46:36,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 19:46:36,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 19:46:36,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-12 19:46:36,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:46:37,460 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-12 19:46:37,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:46:37,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:46:37,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:37,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:46:37,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:46:37,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:46:37,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 19:46:37,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:46:37,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:46:37,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:46:37,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 19:46:37,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:46:37,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:46:37,516 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2032788334] [2020-10-12 19:46:37,516 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:46:37,516 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-12 19:46:37,516 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440700180] [2020-10-12 19:46:37,516 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-12 19:46:37,516 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:46:37,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-12 19:46:37,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2020-10-12 19:46:37,517 INFO L87 Difference]: Start difference. First operand 4179 states and 6305 transitions. Second operand 15 states. [2020-10-12 19:46:38,093 WARN L193 SmtUtils]: Spent 452.00 ms on a formula simplification. DAG size of input: 179 DAG size of output: 177 [2020-10-12 19:46:52,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:46:52,134 INFO L93 Difference]: Finished difference Result 26915 states and 40751 transitions. [2020-10-12 19:46:52,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-10-12 19:46:52,134 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 102 [2020-10-12 19:46:52,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:46:52,161 INFO L225 Difference]: With dead ends: 26915 [2020-10-12 19:46:52,162 INFO L226 Difference]: Without dead ends: 23383 [2020-10-12 19:46:52,173 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 750 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=597, Invalid=1953, Unknown=0, NotChecked=0, Total=2550 [2020-10-12 19:46:52,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23383 states. [2020-10-12 19:46:53,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23383 to 2762. [2020-10-12 19:46:53,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2762 states. [2020-10-12 19:46:53,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2762 states to 2762 states and 4141 transitions. [2020-10-12 19:46:53,218 INFO L78 Accepts]: Start accepts. Automaton has 2762 states and 4141 transitions. Word has length 102 [2020-10-12 19:46:53,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:46:53,218 INFO L479 AbstractCegarLoop]: Abstraction has 2762 states and 4141 transitions. [2020-10-12 19:46:53,218 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-12 19:46:53,218 INFO L276 IsEmpty]: Start isEmpty. Operand 2762 states and 4141 transitions. [2020-10-12 19:46:53,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-12 19:46:53,220 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:46:53,221 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] [2020-10-12 19:46:53,221 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-12 19:46:53,221 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:46:53,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:46:53,221 INFO L82 PathProgramCache]: Analyzing trace with hash -2070485906, now seen corresponding path program 1 times [2020-10-12 19:46:53,221 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:46:53,222 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1968054654] [2020-10-12 19:46:53,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:46:53,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:46:53,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:53,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:53,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:53,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:53,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:53,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:53,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:54,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:58,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:46:58,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-12 19:46:58,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-12 19:46:58,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-12 19:46:58,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:46:58,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 19:46:58,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-12 19:46:58,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-12 19:46:58,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:46:58,672 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-12 19:46:58,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:46:58,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:46:58,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:58,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:46:58,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:46:58,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:46:58,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 19:46:58,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:46:58,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:46:58,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:46:58,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:46:58,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:46:58,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:46:58,772 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1968054654] [2020-10-12 19:46:58,772 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:46:58,773 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-12 19:46:58,773 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396348176] [2020-10-12 19:46:58,773 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 19:46:58,774 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:46:58,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 19:46:58,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2020-10-12 19:46:58,774 INFO L87 Difference]: Start difference. First operand 2762 states and 4141 transitions. Second operand 13 states. [2020-10-12 19:46:58,997 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-12 19:47:04,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:47:04,432 INFO L93 Difference]: Finished difference Result 10286 states and 15753 transitions. [2020-10-12 19:47:04,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-12 19:47:04,433 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 102 [2020-10-12 19:47:04,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:47:04,442 INFO L225 Difference]: With dead ends: 10286 [2020-10-12 19:47:04,442 INFO L226 Difference]: Without dead ends: 8096 [2020-10-12 19:47:04,447 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=99, Invalid=407, Unknown=0, NotChecked=0, Total=506 [2020-10-12 19:47:04,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8096 states. [2020-10-12 19:47:05,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8096 to 2744. [2020-10-12 19:47:05,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2744 states. [2020-10-12 19:47:05,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2744 states to 2744 states and 4111 transitions. [2020-10-12 19:47:05,411 INFO L78 Accepts]: Start accepts. Automaton has 2744 states and 4111 transitions. Word has length 102 [2020-10-12 19:47:05,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:47:05,412 INFO L479 AbstractCegarLoop]: Abstraction has 2744 states and 4111 transitions. [2020-10-12 19:47:05,412 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 19:47:05,412 INFO L276 IsEmpty]: Start isEmpty. Operand 2744 states and 4111 transitions. [2020-10-12 19:47:05,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-12 19:47:05,414 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:47:05,414 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] [2020-10-12 19:47:05,414 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-12 19:47:05,414 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:47:05,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:47:05,415 INFO L82 PathProgramCache]: Analyzing trace with hash -1664433406, now seen corresponding path program 1 times [2020-10-12 19:47:05,415 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:47:05,415 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [603401468] [2020-10-12 19:47:05,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:47:05,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:47:05,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:05,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:05,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:05,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:05,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:05,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:05,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:05,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:06,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:06,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:06,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:06,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:06,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:06,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:10,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:47:10,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-12 19:47:10,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-12 19:47:10,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-12 19:47:10,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:47:10,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 19:47:10,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-12 19:47:10,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-12 19:47:10,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:47:10,743 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 29 [2020-10-12 19:47:11,009 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-12 19:47:11,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:47:11,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:47:11,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:11,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:47:11,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:47:11,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:47:11,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 19:47:11,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:47:11,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:47:11,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:47:11,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:47:11,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:47:11,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:47:11,043 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [603401468] [2020-10-12 19:47:11,044 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:47:11,044 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-12 19:47:11,044 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468937579] [2020-10-12 19:47:11,044 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 19:47:11,045 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:47:11,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 19:47:11,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-10-12 19:47:11,045 INFO L87 Difference]: Start difference. First operand 2744 states and 4111 transitions. Second operand 13 states. [2020-10-12 19:47:11,324 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-12 19:47:29,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:47:29,518 INFO L93 Difference]: Finished difference Result 28631 states and 43153 transitions. [2020-10-12 19:47:29,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-12 19:47:29,518 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 103 [2020-10-12 19:47:29,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:47:29,543 INFO L225 Difference]: With dead ends: 28631 [2020-10-12 19:47:29,543 INFO L226 Difference]: Without dead ends: 26303 [2020-10-12 19:47:29,551 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 382 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=334, Invalid=1306, Unknown=0, NotChecked=0, Total=1640 [2020-10-12 19:47:29,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26303 states. [2020-10-12 19:47:31,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26303 to 5363. [2020-10-12 19:47:31,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5363 states. [2020-10-12 19:47:31,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5363 states to 5363 states and 8057 transitions. [2020-10-12 19:47:31,734 INFO L78 Accepts]: Start accepts. Automaton has 5363 states and 8057 transitions. Word has length 103 [2020-10-12 19:47:31,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:47:31,735 INFO L479 AbstractCegarLoop]: Abstraction has 5363 states and 8057 transitions. [2020-10-12 19:47:31,735 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 19:47:31,735 INFO L276 IsEmpty]: Start isEmpty. Operand 5363 states and 8057 transitions. [2020-10-12 19:47:31,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-12 19:47:31,738 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:47:31,738 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] [2020-10-12 19:47:31,738 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-12 19:47:31,739 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:47:31,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:47:31,739 INFO L82 PathProgramCache]: Analyzing trace with hash 1886428607, now seen corresponding path program 1 times [2020-10-12 19:47:31,739 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:47:31,739 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [530255075] [2020-10-12 19:47:31,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:47:31,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:47:31,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:31,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:31,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:31,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:32,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:32,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:32,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:36,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:47:36,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-12 19:47:36,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-12 19:47:36,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-12 19:47:36,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:47:36,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 19:47:36,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:47:36,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-12 19:47:36,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:47:37,004 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 18 [2020-10-12 19:47:37,235 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-12 19:47:37,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:47:37,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:47:37,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:37,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:47:37,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:47:37,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:47:37,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 19:47:37,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:47:37,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:47:37,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:47:37,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:47:37,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:47:37,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:47:37,282 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [530255075] [2020-10-12 19:47:37,282 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:47:37,283 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-12 19:47:37,283 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831060856] [2020-10-12 19:47:37,283 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 19:47:37,283 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:47:37,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 19:47:37,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-12 19:47:37,284 INFO L87 Difference]: Start difference. First operand 5363 states and 8057 transitions. Second operand 10 states. [2020-10-12 19:47:37,505 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-12 19:47:42,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:47:42,207 INFO L93 Difference]: Finished difference Result 11867 states and 18147 transitions. [2020-10-12 19:47:42,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 19:47:42,208 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 103 [2020-10-12 19:47:42,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:47:42,217 INFO L225 Difference]: With dead ends: 11867 [2020-10-12 19:47:42,218 INFO L226 Difference]: Without dead ends: 7505 [2020-10-12 19:47:42,226 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2020-10-12 19:47:42,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7505 states.