/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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=SHALLOWEST --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 language data_model -i ../../../trunk/examples/svcomp/array-tiling/pr2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-26 19:56:00,414 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 19:56:00,417 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 19:56:00,452 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 19:56:00,453 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 19:56:00,454 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 19:56:00,456 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 19:56:00,459 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 19:56:00,461 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 19:56:00,462 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 19:56:00,464 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 19:56:00,465 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 19:56:00,466 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 19:56:00,467 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 19:56:00,469 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 19:56:00,470 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 19:56:00,471 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 19:56:00,472 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 19:56:00,474 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 19:56:00,477 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 19:56:00,479 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 19:56:00,481 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 19:56:00,482 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 19:56:00,483 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 19:56:00,487 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 19:56:00,487 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 19:56:00,488 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 19:56:00,489 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 19:56:00,493 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 19:56:00,494 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 19:56:00,494 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 19:56:00,495 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 19:56:00,497 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 19:56:00,498 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 19:56:00,500 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 19:56:00,500 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 19:56:00,501 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 19:56:00,502 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 19:56:00,502 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 19:56:00,503 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 19:56:00,505 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 19:56:00,506 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 [2020-10-26 19:56:00,566 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 19:56:00,566 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 19:56:00,568 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 19:56:00,568 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 19:56:00,568 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 19:56:00,569 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 19:56:00,569 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 19:56:00,569 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 19:56:00,569 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 19:56:00,570 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 19:56:00,570 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 19:56:00,570 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 19:56:00,570 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 19:56:00,571 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 19:56:00,571 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 19:56:00,571 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 19:56:00,571 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 19:56:00,572 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 19:56:00,572 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 19:56:00,572 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 19:56:00,573 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 19:56:00,573 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 19:56:00,573 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 19:56:00,573 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 19:56:00,574 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 19:56:00,574 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 19:56:00,574 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 19:56:00,574 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 19:56:00,575 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 19:56:00,575 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-26 19:56:00,952 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 19:56:00,980 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 19:56:00,983 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 19:56:00,984 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 19:56:00,985 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 19:56:00,986 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-tiling/pr2.c [2020-10-26 19:56:01,069 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/33255760d/df6526d8555b4d94b9ef680f6d0a3666/FLAGea736b575 [2020-10-26 19:56:01,681 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 19:56:01,682 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-tiling/pr2.c [2020-10-26 19:56:01,690 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/33255760d/df6526d8555b4d94b9ef680f6d0a3666/FLAGea736b575 [2020-10-26 19:56:02,042 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/33255760d/df6526d8555b4d94b9ef680f6d0a3666 [2020-10-26 19:56:02,045 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 19:56:02,054 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-26 19:56:02,056 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 19:56:02,056 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 19:56:02,060 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 19:56:02,061 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 07:56:02" (1/1) ... [2020-10-26 19:56:02,065 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e4918ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:56:02, skipping insertion in model container [2020-10-26 19:56:02,065 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 07:56:02" (1/1) ... [2020-10-26 19:56:02,075 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 19:56:02,092 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 19:56:02,277 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 19:56:02,287 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 19:56:02,318 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 19:56:02,338 INFO L208 MainTranslator]: Completed translation [2020-10-26 19:56:02,339 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:56:02 WrapperNode [2020-10-26 19:56:02,339 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 19:56:02,340 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 19:56:02,340 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 19:56:02,340 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 19:56:02,354 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:56:02" (1/1) ... [2020-10-26 19:56:02,354 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:56:02" (1/1) ... [2020-10-26 19:56:02,362 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:56:02" (1/1) ... [2020-10-26 19:56:02,363 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:56:02" (1/1) ... [2020-10-26 19:56:02,373 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:56:02" (1/1) ... [2020-10-26 19:56:02,382 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:56:02" (1/1) ... [2020-10-26 19:56:02,387 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:56:02" (1/1) ... [2020-10-26 19:56:02,392 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 19:56:02,393 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 19:56:02,393 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 19:56:02,393 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 19:56:02,395 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:56:02" (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 [2020-10-26 19:56:02,481 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 19:56:02,481 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 19:56:02,481 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-26 19:56:02,482 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-26 19:56:02,482 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-26 19:56:02,483 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 19:56:02,484 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 19:56:02,484 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-26 19:56:02,485 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-26 19:56:02,485 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 19:56:02,485 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-26 19:56:02,485 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-26 19:56:02,485 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 19:56:02,486 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 19:56:02,486 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 19:56:02,486 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 19:56:02,486 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 19:56:02,486 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 19:56:02,487 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 19:56:02,487 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 19:56:02,818 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 19:56:02,818 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-26 19:56:02,820 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 07:56:02 BoogieIcfgContainer [2020-10-26 19:56:02,820 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 19:56:02,823 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 19:56:02,823 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 19:56:02,827 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 19:56:02,827 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 07:56:02" (1/3) ... [2020-10-26 19:56:02,828 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50e34aa0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 07:56:02, skipping insertion in model container [2020-10-26 19:56:02,828 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:56:02" (2/3) ... [2020-10-26 19:56:02,829 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50e34aa0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 07:56:02, skipping insertion in model container [2020-10-26 19:56:02,829 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 07:56:02" (3/3) ... [2020-10-26 19:56:02,830 INFO L111 eAbstractionObserver]: Analyzing ICFG pr2.c [2020-10-26 19:56:02,854 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-26 19:56:02,862 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 19:56:02,895 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-26 19:56:02,951 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 19:56:02,951 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 19:56:02,951 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-26 19:56:02,952 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 19:56:02,952 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 19:56:02,952 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 19:56:02,952 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 19:56:02,952 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 19:56:02,978 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2020-10-26 19:56:02,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-26 19:56:02,983 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:56:02,984 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] [2020-10-26 19:56:02,984 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:56:02,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:56:02,990 INFO L82 PathProgramCache]: Analyzing trace with hash -423145138, now seen corresponding path program 1 times [2020-10-26 19:56:02,998 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:56:02,999 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [272901715] [2020-10-26 19:56:02,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:56:03,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:03,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:03,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:03,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:03,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:04,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:04,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-26 19:56:04,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 19:56:04,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1765 [2020-10-26 19:56:04,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:04,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-26 19:56:04,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:56:04,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-26 19:56:04,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-26 19:56:05,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:56:05,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:05,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:05,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:05,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:56:05,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:05,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-26 19:56:05,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:05,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:56:05,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:05,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:56:05,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:05,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:56:05,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:05,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:05,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:05,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:05,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:05,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 19:56:05,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-26 19:56:05,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:05,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:05,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:05,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:05,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:05,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 19:56:05,103 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [272901715] [2020-10-26 19:56:05,105 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 19:56:05,105 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-26 19:56:05,106 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800788815] [2020-10-26 19:56:05,112 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 19:56:05,112 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:56:05,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 19:56:05,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-26 19:56:05,130 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 5 states. [2020-10-26 19:56:05,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:56:05,398 INFO L93 Difference]: Finished difference Result 77 states and 102 transitions. [2020-10-26 19:56:05,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-26 19:56:05,400 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2020-10-26 19:56:05,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:56:05,408 INFO L225 Difference]: With dead ends: 77 [2020-10-26 19:56:05,409 INFO L226 Difference]: Without dead ends: 37 [2020-10-26 19:56:05,412 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-26 19:56:05,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-10-26 19:56:05,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 32. [2020-10-26 19:56:05,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-26 19:56:05,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2020-10-26 19:56:05,459 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 23 [2020-10-26 19:56:05,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:56:05,460 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2020-10-26 19:56:05,460 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 19:56:05,460 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2020-10-26 19:56:05,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-26 19:56:05,461 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:56:05,461 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] [2020-10-26 19:56:05,462 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 19:56:05,462 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:56:05,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:56:05,463 INFO L82 PathProgramCache]: Analyzing trace with hash 352984327, now seen corresponding path program 1 times [2020-10-26 19:56:05,463 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:56:05,463 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [407116047] [2020-10-26 19:56:05,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:56:05,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:05,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:05,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:05,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:05,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-26 19:56:05,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 19:56:05,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 329 [2020-10-26 19:56:05,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:05,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-26 19:56:05,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:56:05,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-26 19:56:05,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:05,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:56:05,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:05,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:05,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:05,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:56:05,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:05,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-26 19:56:05,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:05,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:56:05,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:05,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:56:05,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:05,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:56:05,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:05,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:05,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:05,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:05,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:05,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-26 19:56:05,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:05,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:05,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:05,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:05,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:05,931 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 19:56:05,932 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [407116047] [2020-10-26 19:56:05,932 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 19:56:05,933 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-26 19:56:05,933 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20809073] [2020-10-26 19:56:05,935 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 19:56:05,935 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:56:05,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 19:56:05,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-26 19:56:05,936 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand 5 states. [2020-10-26 19:56:06,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:56:06,087 INFO L93 Difference]: Finished difference Result 59 states and 72 transitions. [2020-10-26 19:56:06,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 19:56:06,087 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2020-10-26 19:56:06,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:56:06,089 INFO L225 Difference]: With dead ends: 59 [2020-10-26 19:56:06,089 INFO L226 Difference]: Without dead ends: 42 [2020-10-26 19:56:06,091 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-26 19:56:06,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-26 19:56:06,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 36. [2020-10-26 19:56:06,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-26 19:56:06,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 42 transitions. [2020-10-26 19:56:06,103 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 42 transitions. Word has length 27 [2020-10-26 19:56:06,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:56:06,103 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 42 transitions. [2020-10-26 19:56:06,103 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 19:56:06,103 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 42 transitions. [2020-10-26 19:56:06,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-26 19:56:06,105 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:56:06,105 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] [2020-10-26 19:56:06,105 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 19:56:06,105 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:56:06,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:56:06,106 INFO L82 PathProgramCache]: Analyzing trace with hash 1054048905, now seen corresponding path program 1 times [2020-10-26 19:56:06,106 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:56:06,107 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1790921332] [2020-10-26 19:56:06,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:56:06,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:06,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:06,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:06,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:06,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-26 19:56:06,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 19:56:06,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 579 [2020-10-26 19:56:06,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:06,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-26 19:56:06,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:56:06,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-26 19:56:06,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 19:56:06,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:56:06,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:06,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:06,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:07,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:56:07,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:07,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-26 19:56:07,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:07,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:56:07,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:07,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:56:07,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:07,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:56:07,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:07,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:07,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:07,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:07,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:07,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 19:56:07,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:07,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:07,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:07,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:07,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:07,023 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 19:56:07,024 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1790921332] [2020-10-26 19:56:07,024 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:56:07,024 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-26 19:56:07,025 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642317268] [2020-10-26 19:56:07,025 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-26 19:56:07,025 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:56:07,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-26 19:56:07,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-26 19:56:07,027 INFO L87 Difference]: Start difference. First operand 36 states and 42 transitions. Second operand 9 states. [2020-10-26 19:56:07,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:56:07,432 INFO L93 Difference]: Finished difference Result 73 states and 90 transitions. [2020-10-26 19:56:07,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 19:56:07,433 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 27 [2020-10-26 19:56:07,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:56:07,435 INFO L225 Difference]: With dead ends: 73 [2020-10-26 19:56:07,436 INFO L226 Difference]: Without dead ends: 61 [2020-10-26 19:56:07,436 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2020-10-26 19:56:07,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-10-26 19:56:07,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 44. [2020-10-26 19:56:07,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-10-26 19:56:07,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2020-10-26 19:56:07,448 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 27 [2020-10-26 19:56:07,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:56:07,449 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2020-10-26 19:56:07,449 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-26 19:56:07,449 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2020-10-26 19:56:07,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-26 19:56:07,450 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:56:07,450 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] [2020-10-26 19:56:07,451 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 19:56:07,451 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:56:07,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:56:07,452 INFO L82 PathProgramCache]: Analyzing trace with hash 1111307207, now seen corresponding path program 1 times [2020-10-26 19:56:07,452 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:56:07,452 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2057614944] [2020-10-26 19:56:07,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:56:07,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:07,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:07,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:07,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-26 19:56:07,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:07,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 180 [2020-10-26 19:56:07,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:07,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 19:56:07,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-26 19:56:07,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-26 19:56:07,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:07,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:56:07,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:07,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:07,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:07,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:56:07,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:07,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 19:56:07,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:07,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:56:07,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:07,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:56:07,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:07,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:56:07,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:07,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:07,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:07,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:07,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:07,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 19:56:07,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:07,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:56:07,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:07,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:56:07,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:07,798 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 19:56:07,799 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2057614944] [2020-10-26 19:56:07,799 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:56:07,799 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-26 19:56:07,800 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861481256] [2020-10-26 19:56:07,800 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-26 19:56:07,800 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:56:07,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-26 19:56:07,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-26 19:56:07,801 INFO L87 Difference]: Start difference. First operand 44 states and 53 transitions. Second operand 10 states. [2020-10-26 19:56:08,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:56:08,274 INFO L93 Difference]: Finished difference Result 68 states and 82 transitions. [2020-10-26 19:56:08,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-26 19:56:08,274 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 27 [2020-10-26 19:56:08,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:56:08,276 INFO L225 Difference]: With dead ends: 68 [2020-10-26 19:56:08,276 INFO L226 Difference]: Without dead ends: 65 [2020-10-26 19:56:08,277 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2020-10-26 19:56:08,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-10-26 19:56:08,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 49. [2020-10-26 19:56:08,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-26 19:56:08,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 58 transitions. [2020-10-26 19:56:08,289 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 58 transitions. Word has length 27 [2020-10-26 19:56:08,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:56:08,290 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 58 transitions. [2020-10-26 19:56:08,290 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-26 19:56:08,290 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 58 transitions. [2020-10-26 19:56:08,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-26 19:56:08,292 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:56:08,292 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] [2020-10-26 19:56:08,292 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 19:56:08,292 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:56:08,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:56:08,293 INFO L82 PathProgramCache]: Analyzing trace with hash 152077191, now seen corresponding path program 1 times [2020-10-26 19:56:08,293 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:56:08,293 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [451946407] [2020-10-26 19:56:08,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:56:08,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:08,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:08,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:08,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-26 19:56:08,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:08,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 167 [2020-10-26 19:56:08,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:08,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 19:56:08,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-26 19:56:08,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-26 19:56:08,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:08,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:56:08,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:08,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:08,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:08,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:56:08,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:08,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 19:56:08,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:08,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:56:08,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:08,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:56:08,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:08,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:56:08,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:08,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:08,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:08,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:08,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:08,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:56:08,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:08,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:56:08,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:08,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:56:08,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:08,617 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 19:56:08,618 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [451946407] [2020-10-26 19:56:08,618 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:56:08,618 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 19:56:08,619 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138321092] [2020-10-26 19:56:08,621 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 19:56:08,622 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:56:08,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 19:56:08,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-26 19:56:08,623 INFO L87 Difference]: Start difference. First operand 49 states and 58 transitions. Second operand 8 states. [2020-10-26 19:56:08,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:56:08,956 INFO L93 Difference]: Finished difference Result 86 states and 103 transitions. [2020-10-26 19:56:08,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 19:56:08,957 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 27 [2020-10-26 19:56:08,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:56:08,959 INFO L225 Difference]: With dead ends: 86 [2020-10-26 19:56:08,960 INFO L226 Difference]: Without dead ends: 69 [2020-10-26 19:56:08,961 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-26 19:56:08,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-10-26 19:56:08,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 52. [2020-10-26 19:56:08,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-26 19:56:08,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 61 transitions. [2020-10-26 19:56:08,976 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 61 transitions. Word has length 27 [2020-10-26 19:56:08,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:56:08,977 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 61 transitions. [2020-10-26 19:56:08,977 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 19:56:08,977 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 61 transitions. [2020-10-26 19:56:08,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-26 19:56:08,978 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:56:08,978 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:56:08,979 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 19:56:08,979 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:56:08,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:56:08,979 INFO L82 PathProgramCache]: Analyzing trace with hash -1185855294, now seen corresponding path program 1 times [2020-10-26 19:56:08,980 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:56:08,980 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [765862971] [2020-10-26 19:56:08,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:56:08,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:09,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:09,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:09,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-26 19:56:09,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:09,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-26 19:56:09,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:09,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:09,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-26 19:56:09,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-26 19:56:09,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:09,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:56:09,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:09,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:09,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:09,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:56:09,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:09,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 19:56:09,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:09,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:56:09,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:09,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:56:09,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:09,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:56:09,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:09,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:09,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:09,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:09,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:09,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:56:09,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:09,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:56:09,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:09,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:56:09,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:09,153 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 19:56:09,153 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [765862971] [2020-10-26 19:56:09,153 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 19:56:09,154 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 19:56:09,154 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770156333] [2020-10-26 19:56:09,154 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 19:56:09,154 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:56:09,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 19:56:09,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 19:56:09,156 INFO L87 Difference]: Start difference. First operand 52 states and 61 transitions. Second operand 4 states. [2020-10-26 19:56:09,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:56:09,258 INFO L93 Difference]: Finished difference Result 80 states and 95 transitions. [2020-10-26 19:56:09,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-26 19:56:09,259 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2020-10-26 19:56:09,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:56:09,260 INFO L225 Difference]: With dead ends: 80 [2020-10-26 19:56:09,260 INFO L226 Difference]: Without dead ends: 58 [2020-10-26 19:56:09,261 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 19:56:09,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-26 19:56:09,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 52. [2020-10-26 19:56:09,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-26 19:56:09,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 59 transitions. [2020-10-26 19:56:09,272 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 59 transitions. Word has length 31 [2020-10-26 19:56:09,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:56:09,272 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 59 transitions. [2020-10-26 19:56:09,272 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 19:56:09,272 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 59 transitions. [2020-10-26 19:56:09,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-26 19:56:09,273 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:56:09,274 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:56:09,274 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-26 19:56:09,274 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:56:09,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:56:09,275 INFO L82 PathProgramCache]: Analyzing trace with hash 1373242176, now seen corresponding path program 1 times [2020-10-26 19:56:09,275 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:56:09,275 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [960702430] [2020-10-26 19:56:09,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:56:09,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:09,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:09,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:09,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:09,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:09,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-26 19:56:09,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 19:56:09,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 198 [2020-10-26 19:56:09,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:09,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-26 19:56:09,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:56:09,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-26 19:56:09,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:09,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:56:09,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:09,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:09,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:09,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:56:09,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:09,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 19:56:09,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:09,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:56:09,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:09,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:56:09,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:09,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:56:09,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:09,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:09,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:09,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:09,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:09,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 19:56:09,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:09,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:09,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:09,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:09,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:09,569 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 19:56:09,570 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [960702430] [2020-10-26 19:56:09,570 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:56:09,570 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-26 19:56:09,570 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282141605] [2020-10-26 19:56:09,571 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 19:56:09,571 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:56:09,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 19:56:09,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-26 19:56:09,572 INFO L87 Difference]: Start difference. First operand 52 states and 59 transitions. Second operand 5 states. [2020-10-26 19:56:09,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:56:09,710 INFO L93 Difference]: Finished difference Result 87 states and 102 transitions. [2020-10-26 19:56:09,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 19:56:09,710 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2020-10-26 19:56:09,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:56:09,711 INFO L225 Difference]: With dead ends: 87 [2020-10-26 19:56:09,712 INFO L226 Difference]: Without dead ends: 65 [2020-10-26 19:56:09,712 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-26 19:56:09,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-10-26 19:56:09,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 56. [2020-10-26 19:56:09,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-26 19:56:09,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 65 transitions. [2020-10-26 19:56:09,723 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 65 transitions. Word has length 31 [2020-10-26 19:56:09,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:56:09,723 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 65 transitions. [2020-10-26 19:56:09,723 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 19:56:09,723 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 65 transitions. [2020-10-26 19:56:09,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-26 19:56:09,724 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:56:09,724 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:56:09,725 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-26 19:56:09,725 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:56:09,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:56:09,725 INFO L82 PathProgramCache]: Analyzing trace with hash 93378498, now seen corresponding path program 2 times [2020-10-26 19:56:09,726 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:56:09,726 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [562023382] [2020-10-26 19:56:09,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:56:09,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:09,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:09,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:09,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-26 19:56:09,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:09,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-26 19:56:09,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:09,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:09,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-26 19:56:09,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-26 19:56:09,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:09,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:56:09,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:09,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:09,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:09,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:56:09,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:09,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 19:56:09,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:09,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:56:09,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:09,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:56:09,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:09,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:56:09,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:09,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:09,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:09,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:09,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:09,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:56:09,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:09,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:56:09,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:09,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:56:09,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:09,853 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 19:56:09,854 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [562023382] [2020-10-26 19:56:09,854 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 19:56:09,854 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 19:56:09,854 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338159526] [2020-10-26 19:56:09,855 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 19:56:09,855 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:56:09,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 19:56:09,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 19:56:09,856 INFO L87 Difference]: Start difference. First operand 56 states and 65 transitions. Second operand 4 states. [2020-10-26 19:56:09,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:56:09,957 INFO L93 Difference]: Finished difference Result 79 states and 92 transitions. [2020-10-26 19:56:09,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-26 19:56:09,957 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2020-10-26 19:56:09,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:56:09,958 INFO L225 Difference]: With dead ends: 79 [2020-10-26 19:56:09,959 INFO L226 Difference]: Without dead ends: 57 [2020-10-26 19:56:09,959 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 19:56:09,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-10-26 19:56:09,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 47. [2020-10-26 19:56:09,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-26 19:56:09,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 52 transitions. [2020-10-26 19:56:09,969 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 52 transitions. Word has length 31 [2020-10-26 19:56:09,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:56:09,969 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 52 transitions. [2020-10-26 19:56:09,969 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 19:56:09,969 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 52 transitions. [2020-10-26 19:56:09,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-26 19:56:09,970 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:56:09,970 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:56:09,971 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-26 19:56:09,971 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:56:09,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:56:09,971 INFO L82 PathProgramCache]: Analyzing trace with hash 1851299717, now seen corresponding path program 1 times [2020-10-26 19:56:09,972 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:56:09,972 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [628733100] [2020-10-26 19:56:09,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:56:09,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:10,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:10,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:10,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-26 19:56:10,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:10,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 236 [2020-10-26 19:56:10,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:10,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 19:56:10,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-26 19:56:10,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-26 19:56:10,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:10,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:56:10,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:10,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:10,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:10,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:56:10,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:10,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-26 19:56:10,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:10,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:56:10,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:10,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:56:10,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:10,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:56:10,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:10,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:10,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:10,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:10,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:10,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:56:10,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:10,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:56:10,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:10,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:56:10,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:10,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-26 19:56:10,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:10,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:10,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:10,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:10,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:10,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 19:56:10,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:10,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:10,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:10,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:10,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:10,404 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 19:56:10,405 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [628733100] [2020-10-26 19:56:10,405 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:56:10,405 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-26 19:56:10,405 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214275221] [2020-10-26 19:56:10,406 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-26 19:56:10,406 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:56:10,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-26 19:56:10,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-26 19:56:10,407 INFO L87 Difference]: Start difference. First operand 47 states and 52 transitions. Second operand 10 states. [2020-10-26 19:56:10,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:56:10,812 INFO L93 Difference]: Finished difference Result 89 states and 103 transitions. [2020-10-26 19:56:10,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-26 19:56:10,813 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 36 [2020-10-26 19:56:10,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:56:10,814 INFO L225 Difference]: With dead ends: 89 [2020-10-26 19:56:10,814 INFO L226 Difference]: Without dead ends: 86 [2020-10-26 19:56:10,815 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2020-10-26 19:56:10,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-10-26 19:56:10,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 69. [2020-10-26 19:56:10,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-26 19:56:10,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 78 transitions. [2020-10-26 19:56:10,829 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 78 transitions. Word has length 36 [2020-10-26 19:56:10,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:56:10,829 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 78 transitions. [2020-10-26 19:56:10,829 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-26 19:56:10,829 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 78 transitions. [2020-10-26 19:56:10,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-26 19:56:10,832 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:56:10,832 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:56:10,832 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-26 19:56:10,833 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:56:10,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:56:10,833 INFO L82 PathProgramCache]: Analyzing trace with hash -768857277, now seen corresponding path program 1 times [2020-10-26 19:56:10,833 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:56:10,835 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [642127270] [2020-10-26 19:56:10,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:56:10,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:10,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:11,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:11,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-26 19:56:11,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:11,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 173 [2020-10-26 19:56:11,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:11,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 19:56:11,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-26 19:56:11,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-26 19:56:11,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:11,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:56:11,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:11,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:11,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:11,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:56:11,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:11,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 19:56:11,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:11,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:56:11,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:11,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:56:11,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:11,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:56:11,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:11,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:11,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:11,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:11,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:11,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:56:11,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:11,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:56:11,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:11,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:56:11,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:11,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-26 19:56:11,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:11,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:11,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:11,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:11,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:11,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 19:56:11,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:11,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:11,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:11,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:11,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 15 [2020-10-26 19:56:11,177 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 19:56:11,178 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [642127270] [2020-10-26 19:56:11,178 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:56:11,178 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 19:56:11,178 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854024306] [2020-10-26 19:56:11,179 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 19:56:11,179 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:56:11,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 19:56:11,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-26 19:56:11,180 INFO L87 Difference]: Start difference. First operand 69 states and 78 transitions. Second operand 8 states. [2020-10-26 19:56:11,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:56:11,484 INFO L93 Difference]: Finished difference Result 115 states and 134 transitions. [2020-10-26 19:56:11,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 19:56:11,485 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 36 [2020-10-26 19:56:11,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:56:11,486 INFO L225 Difference]: With dead ends: 115 [2020-10-26 19:56:11,487 INFO L226 Difference]: Without dead ends: 98 [2020-10-26 19:56:11,487 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-26 19:56:11,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-26 19:56:11,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 80. [2020-10-26 19:56:11,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-10-26 19:56:11,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 93 transitions. [2020-10-26 19:56:11,501 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 93 transitions. Word has length 36 [2020-10-26 19:56:11,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:56:11,502 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 93 transitions. [2020-10-26 19:56:11,502 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 19:56:11,502 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 93 transitions. [2020-10-26 19:56:11,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-26 19:56:11,503 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:56:11,503 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:56:11,503 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-26 19:56:11,503 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:56:11,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:56:11,504 INFO L82 PathProgramCache]: Analyzing trace with hash 981622952, now seen corresponding path program 1 times [2020-10-26 19:56:11,504 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:56:11,504 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1643869183] [2020-10-26 19:56:11,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:56:11,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:11,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:11,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:11,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-26 19:56:11,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:11,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-26 19:56:11,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:11,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:11,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-26 19:56:11,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-26 19:56:11,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:11,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:56:11,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:11,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:11,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:11,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:56:11,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:11,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-26 19:56:11,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:11,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:56:11,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:11,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:56:11,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:11,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:56:11,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:11,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:11,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:11,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:11,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:11,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 19:56:11,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:11,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:56:11,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:11,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:56:11,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:11,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-26 19:56:11,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:11,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:11,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:11,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:11,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:11,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:56:11,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:11,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:56:11,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:56:11,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:56:11,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:11,675 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-26 19:56:11,676 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1643869183] [2020-10-26 19:56:11,676 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 19:56:11,676 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 19:56:11,676 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561151454] [2020-10-26 19:56:11,677 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 19:56:11,677 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:56:11,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 19:56:11,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 19:56:11,678 INFO L87 Difference]: Start difference. First operand 80 states and 93 transitions. Second operand 4 states. [2020-10-26 19:56:11,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:56:11,780 INFO L93 Difference]: Finished difference Result 110 states and 129 transitions. [2020-10-26 19:56:11,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-26 19:56:11,781 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 40 [2020-10-26 19:56:11,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:56:11,782 INFO L225 Difference]: With dead ends: 110 [2020-10-26 19:56:11,782 INFO L226 Difference]: Without dead ends: 86 [2020-10-26 19:56:11,783 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 19:56:11,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-10-26 19:56:11,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 80. [2020-10-26 19:56:11,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-10-26 19:56:11,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 91 transitions. [2020-10-26 19:56:11,796 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 91 transitions. Word has length 40 [2020-10-26 19:56:11,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:56:11,797 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 91 transitions. [2020-10-26 19:56:11,797 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 19:56:11,797 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 91 transitions. [2020-10-26 19:56:11,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-26 19:56:11,798 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:56:11,798 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:56:11,798 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-26 19:56:11,798 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:56:11,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:56:11,799 INFO L82 PathProgramCache]: Analyzing trace with hash 1665257896, now seen corresponding path program 2 times [2020-10-26 19:56:11,799 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:56:11,799 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [308551306] [2020-10-26 19:56:11,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:56:11,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:11,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:11,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:11,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-26 19:56:11,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:11,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-26 19:56:11,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:11,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:11,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-26 19:56:11,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-26 19:56:11,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:11,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:56:11,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:11,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:11,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:11,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:56:11,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:11,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 19:56:11,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:11,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:56:11,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:11,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:56:11,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:11,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:56:11,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:11,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:11,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:11,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:11,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:11,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:56:11,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:11,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:56:11,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:11,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:56:11,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:11,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-26 19:56:11,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:11,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:11,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:11,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:11,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:11,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:56:11,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:11,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:56:11,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:56:11,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:56:11,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:11,939 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-26 19:56:11,939 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [308551306] [2020-10-26 19:56:11,940 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 19:56:11,940 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 19:56:11,940 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642964104] [2020-10-26 19:56:11,957 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 19:56:11,957 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:56:11,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 19:56:11,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 19:56:11,958 INFO L87 Difference]: Start difference. First operand 80 states and 91 transitions. Second operand 4 states. [2020-10-26 19:56:12,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:56:12,069 INFO L93 Difference]: Finished difference Result 106 states and 121 transitions. [2020-10-26 19:56:12,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-26 19:56:12,070 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 40 [2020-10-26 19:56:12,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:56:12,071 INFO L225 Difference]: With dead ends: 106 [2020-10-26 19:56:12,071 INFO L226 Difference]: Without dead ends: 82 [2020-10-26 19:56:12,072 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 19:56:12,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-10-26 19:56:12,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 75. [2020-10-26 19:56:12,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-26 19:56:12,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 84 transitions. [2020-10-26 19:56:12,086 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 84 transitions. Word has length 40 [2020-10-26 19:56:12,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:56:12,087 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 84 transitions. [2020-10-26 19:56:12,087 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 19:56:12,087 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 84 transitions. [2020-10-26 19:56:12,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-26 19:56:12,088 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:56:12,088 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:56:12,089 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-26 19:56:12,089 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:56:12,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:56:12,090 INFO L82 PathProgramCache]: Analyzing trace with hash -1306020603, now seen corresponding path program 1 times [2020-10-26 19:56:12,090 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:56:12,090 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [885171467] [2020-10-26 19:56:12,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:56:12,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:12,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:12,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:12,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:12,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:12,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:12,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:12,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:13,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:17,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:17,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-26 19:56:17,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-26 19:56:17,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-26 19:56:17,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:17,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-26 19:56:17,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:56:17,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-26 19:56:17,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:17,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:56:17,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:17,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:17,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:17,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:56:17,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:17,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 19:56:17,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:17,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:56:17,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:17,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:56:17,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:17,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:56:17,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:17,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:17,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:17,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:17,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:17,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 19:56:17,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:17,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:17,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:17,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:17,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:17,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-26 19:56:17,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:17,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:17,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:17,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:17,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:17,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:56:17,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:17,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:17,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:17,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:17,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:17,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-26 19:56:17,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:17,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:17,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:17,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:17,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:17,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 19:56:17,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:17,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 19:56:17,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-26 19:56:17,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:17,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:17,293 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 15 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-26 19:56:17,293 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [885171467] [2020-10-26 19:56:17,294 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:56:17,294 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-26 19:56:17,294 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871116510] [2020-10-26 19:56:17,294 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-26 19:56:17,295 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:56:17,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-26 19:56:17,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-10-26 19:56:17,296 INFO L87 Difference]: Start difference. First operand 75 states and 84 transitions. Second operand 11 states. [2020-10-26 19:56:17,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:56:17,737 INFO L93 Difference]: Finished difference Result 104 states and 117 transitions. [2020-10-26 19:56:17,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-26 19:56:17,737 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 45 [2020-10-26 19:56:17,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:56:17,738 INFO L225 Difference]: With dead ends: 104 [2020-10-26 19:56:17,739 INFO L226 Difference]: Without dead ends: 87 [2020-10-26 19:56:17,739 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2020-10-26 19:56:17,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-10-26 19:56:17,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 75. [2020-10-26 19:56:17,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-26 19:56:17,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 83 transitions. [2020-10-26 19:56:17,753 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 83 transitions. Word has length 45 [2020-10-26 19:56:17,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:56:17,753 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 83 transitions. [2020-10-26 19:56:17,753 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-26 19:56:17,753 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 83 transitions. [2020-10-26 19:56:17,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-26 19:56:17,754 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:56:17,754 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:56:17,755 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-26 19:56:17,755 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:56:17,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:56:17,756 INFO L82 PathProgramCache]: Analyzing trace with hash 1709083015, now seen corresponding path program 2 times [2020-10-26 19:56:17,756 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:56:17,756 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1133033586] [2020-10-26 19:56:17,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:56:17,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:17,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:17,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:18,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:18,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-26 19:56:18,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 19:56:18,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 637 [2020-10-26 19:56:18,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:18,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 19:56:18,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-26 19:56:18,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-26 19:56:18,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:18,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:56:18,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:18,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:18,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:18,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:56:18,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:18,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 19:56:18,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:18,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:56:18,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:18,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:56:18,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:18,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:56:18,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:18,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:18,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:18,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:18,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:18,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 19:56:18,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-26 19:56:18,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:18,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 19:56:18,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:18,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-26 19:56:18,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:18,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-26 19:56:18,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:18,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:18,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:18,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:18,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:18,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:56:18,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:18,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:18,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:18,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:18,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:18,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-26 19:56:18,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:18,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:18,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:18,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:18,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:18,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:56:18,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:18,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:18,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:18,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:18,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:18,664 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-26 19:56:18,665 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1133033586] [2020-10-26 19:56:18,665 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:56:18,665 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-26 19:56:18,665 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488100359] [2020-10-26 19:56:18,666 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-26 19:56:18,666 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:56:18,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-26 19:56:18,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-10-26 19:56:18,667 INFO L87 Difference]: Start difference. First operand 75 states and 83 transitions. Second operand 12 states. [2020-10-26 19:56:19,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:56:19,327 INFO L93 Difference]: Finished difference Result 148 states and 163 transitions. [2020-10-26 19:56:19,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-26 19:56:19,328 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 45 [2020-10-26 19:56:19,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:56:19,329 INFO L225 Difference]: With dead ends: 148 [2020-10-26 19:56:19,330 INFO L226 Difference]: Without dead ends: 94 [2020-10-26 19:56:19,331 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=107, Invalid=399, Unknown=0, NotChecked=0, Total=506 [2020-10-26 19:56:19,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-10-26 19:56:19,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 82. [2020-10-26 19:56:19,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-10-26 19:56:19,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 90 transitions. [2020-10-26 19:56:19,351 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 90 transitions. Word has length 45 [2020-10-26 19:56:19,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:56:19,351 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 90 transitions. [2020-10-26 19:56:19,351 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-26 19:56:19,351 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 90 transitions. [2020-10-26 19:56:19,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-26 19:56:19,352 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:56:19,352 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:56:19,352 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-26 19:56:19,352 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:56:19,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:56:19,353 INFO L82 PathProgramCache]: Analyzing trace with hash -1224946432, now seen corresponding path program 3 times [2020-10-26 19:56:19,353 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:56:19,353 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [565317270] [2020-10-26 19:56:19,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:56:19,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:19,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:19,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:19,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-26 19:56:19,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:19,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 377 [2020-10-26 19:56:19,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:19,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-26 19:56:19,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-26 19:56:19,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-26 19:56:19,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:19,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:56:19,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:19,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:19,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:19,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:56:19,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:19,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 19:56:19,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:19,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:56:19,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:19,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:56:19,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:19,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:56:19,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:19,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:19,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:19,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:19,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:19,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:56:19,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:19,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:56:19,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:19,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:56:19,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:19,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-26 19:56:19,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:19,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:19,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:19,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:19,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:19,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:56:19,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:19,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:19,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:19,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:19,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:19,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-26 19:56:19,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:19,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:19,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:19,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:19,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:19,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 19:56:19,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:19,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:19,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:19,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:19,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:19,972 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 4 proven. 17 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-26 19:56:19,972 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [565317270] [2020-10-26 19:56:19,972 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:56:19,972 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-26 19:56:19,973 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479561660] [2020-10-26 19:56:19,973 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-26 19:56:19,973 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:56:19,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-26 19:56:19,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2020-10-26 19:56:19,975 INFO L87 Difference]: Start difference. First operand 82 states and 90 transitions. Second operand 13 states. [2020-10-26 19:56:20,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:56:20,655 INFO L93 Difference]: Finished difference Result 127 states and 143 transitions. [2020-10-26 19:56:20,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-26 19:56:20,656 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 49 [2020-10-26 19:56:20,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:56:20,658 INFO L225 Difference]: With dead ends: 127 [2020-10-26 19:56:20,658 INFO L226 Difference]: Without dead ends: 124 [2020-10-26 19:56:20,659 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=82, Invalid=424, Unknown=0, NotChecked=0, Total=506 [2020-10-26 19:56:20,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-10-26 19:56:20,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 96. [2020-10-26 19:56:20,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-10-26 19:56:20,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 106 transitions. [2020-10-26 19:56:20,677 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 106 transitions. Word has length 49 [2020-10-26 19:56:20,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:56:20,677 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 106 transitions. [2020-10-26 19:56:20,677 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-26 19:56:20,677 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 106 transitions. [2020-10-26 19:56:20,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-26 19:56:20,678 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:56:20,678 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:56:20,678 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-26 19:56:20,678 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:56:20,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:56:20,679 INFO L82 PathProgramCache]: Analyzing trace with hash 1096464960, now seen corresponding path program 2 times [2020-10-26 19:56:20,679 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:56:20,679 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1783953241] [2020-10-26 19:56:20,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:56:20,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:20,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:20,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:20,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-26 19:56:20,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:20,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 264 [2020-10-26 19:56:20,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:20,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-26 19:56:20,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-26 19:56:20,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-26 19:56:20,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:21,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:56:21,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:21,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:21,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:21,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:56:21,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:21,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 19:56:21,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:21,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:56:21,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:21,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:56:21,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:21,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:56:21,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:21,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:21,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:21,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:21,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:21,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:56:21,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:21,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:56:21,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:21,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:56:21,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:21,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-26 19:56:21,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:21,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:21,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:21,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:21,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:21,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 19:56:21,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:21,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:21,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:21,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:21,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:21,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-26 19:56:21,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:21,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:21,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:21,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:21,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:21,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 19:56:21,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:21,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:21,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:21,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:21,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:21,163 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 6 proven. 15 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-26 19:56:21,164 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1783953241] [2020-10-26 19:56:21,164 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:56:21,164 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-26 19:56:21,164 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823841618] [2020-10-26 19:56:21,165 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-26 19:56:21,165 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:56:21,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-26 19:56:21,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-10-26 19:56:21,166 INFO L87 Difference]: Start difference. First operand 96 states and 106 transitions. Second operand 11 states. [2020-10-26 19:56:21,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:56:21,661 INFO L93 Difference]: Finished difference Result 144 states and 162 transitions. [2020-10-26 19:56:21,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-26 19:56:21,662 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 49 [2020-10-26 19:56:21,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:56:21,664 INFO L225 Difference]: With dead ends: 144 [2020-10-26 19:56:21,664 INFO L226 Difference]: Without dead ends: 127 [2020-10-26 19:56:21,664 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2020-10-26 19:56:21,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-10-26 19:56:21,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 101. [2020-10-26 19:56:21,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-26 19:56:21,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 112 transitions. [2020-10-26 19:56:21,684 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 112 transitions. Word has length 49 [2020-10-26 19:56:21,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:56:21,684 INFO L481 AbstractCegarLoop]: Abstraction has 101 states and 112 transitions. [2020-10-26 19:56:21,684 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-26 19:56:21,684 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 112 transitions. [2020-10-26 19:56:21,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-26 19:56:21,685 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:56:21,685 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:56:21,686 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-26 19:56:21,686 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:56:21,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:56:21,686 INFO L82 PathProgramCache]: Analyzing trace with hash 1975024106, now seen corresponding path program 2 times [2020-10-26 19:56:21,686 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:56:21,687 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [563122529] [2020-10-26 19:56:21,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:56:21,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:21,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:21,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:21,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:21,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:21,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:22,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:23,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:23,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:24,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:24,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:24,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:26,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:26,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-26 19:56:26,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-26 19:56:26,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-26 19:56:26,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:26,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-26 19:56:26,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:56:26,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-26 19:56:26,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:26,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:56:26,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:26,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:26,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:26,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:56:26,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:26,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 19:56:26,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:26,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:56:26,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:26,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:56:26,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:26,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:56:26,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:26,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:26,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:26,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:26,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:26,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 19:56:26,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:26,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:26,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:26,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:26,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:26,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-26 19:56:26,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:26,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:26,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:26,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:26,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:26,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:56:26,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:26,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:26,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:26,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:26,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:26,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-26 19:56:26,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:26,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:26,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:26,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:26,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:26,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:56:26,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:26,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:26,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:26,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:26,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:26,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-26 19:56:26,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:26,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:26,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:26,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:26,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:26,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:56:26,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:26,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 19:56:26,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-26 19:56:26,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:26,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:27,000 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 25 proven. 17 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-26 19:56:27,001 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [563122529] [2020-10-26 19:56:27,002 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:56:27,002 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-26 19:56:27,002 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327023203] [2020-10-26 19:56:27,003 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-26 19:56:27,003 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:56:27,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-26 19:56:27,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2020-10-26 19:56:27,008 INFO L87 Difference]: Start difference. First operand 101 states and 112 transitions. Second operand 14 states. [2020-10-26 19:56:27,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:56:27,706 INFO L93 Difference]: Finished difference Result 140 states and 156 transitions. [2020-10-26 19:56:27,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-26 19:56:27,707 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 58 [2020-10-26 19:56:27,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:56:27,709 INFO L225 Difference]: With dead ends: 140 [2020-10-26 19:56:27,709 INFO L226 Difference]: Without dead ends: 123 [2020-10-26 19:56:27,710 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=90, Invalid=416, Unknown=0, NotChecked=0, Total=506 [2020-10-26 19:56:27,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-10-26 19:56:27,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 101. [2020-10-26 19:56:27,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-26 19:56:27,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 111 transitions. [2020-10-26 19:56:27,738 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 111 transitions. Word has length 58 [2020-10-26 19:56:27,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:56:27,739 INFO L481 AbstractCegarLoop]: Abstraction has 101 states and 111 transitions. [2020-10-26 19:56:27,739 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-26 19:56:27,739 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 111 transitions. [2020-10-26 19:56:27,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-26 19:56:27,740 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:56:27,740 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:56:27,740 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-26 19:56:27,740 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:56:27,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:56:27,741 INFO L82 PathProgramCache]: Analyzing trace with hash 695160428, now seen corresponding path program 4 times [2020-10-26 19:56:27,741 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:56:27,741 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1819067025] [2020-10-26 19:56:27,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:56:27,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:27,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:28,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:28,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-26 19:56:28,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:28,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 321 [2020-10-26 19:56:28,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:28,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-26 19:56:28,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-26 19:56:28,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-26 19:56:28,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:28,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:56:28,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:28,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:28,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:28,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:56:28,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:28,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:56:28,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:28,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:56:28,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:28,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:56:28,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:28,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:56:28,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:28,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:28,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:28,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:28,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:28,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:56:28,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:28,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:56:28,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:28,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:56:28,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:28,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-26 19:56:28,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:28,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:28,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:28,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:28,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:28,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:56:28,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:28,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:28,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:28,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:28,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:28,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-26 19:56:28,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:28,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:28,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:28,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:28,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:28,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:56:28,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:28,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:28,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:28,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:28,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:28,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-26 19:56:28,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:28,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:28,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:28,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:28,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:28,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:56:28,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:28,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:28,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:28,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:28,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:28,296 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 6 proven. 30 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-26 19:56:28,297 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1819067025] [2020-10-26 19:56:28,297 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:56:28,297 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-26 19:56:28,297 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467916372] [2020-10-26 19:56:28,299 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-26 19:56:28,300 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:56:28,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-26 19:56:28,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2020-10-26 19:56:28,305 INFO L87 Difference]: Start difference. First operand 101 states and 111 transitions. Second operand 13 states. [2020-10-26 19:56:29,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:56:29,142 INFO L93 Difference]: Finished difference Result 147 states and 165 transitions. [2020-10-26 19:56:29,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-26 19:56:29,143 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 58 [2020-10-26 19:56:29,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:56:29,147 INFO L225 Difference]: With dead ends: 147 [2020-10-26 19:56:29,147 INFO L226 Difference]: Without dead ends: 144 [2020-10-26 19:56:29,148 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=95, Invalid=555, Unknown=0, NotChecked=0, Total=650 [2020-10-26 19:56:29,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-10-26 19:56:29,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 115. [2020-10-26 19:56:29,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-10-26 19:56:29,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 127 transitions. [2020-10-26 19:56:29,172 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 127 transitions. Word has length 58 [2020-10-26 19:56:29,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:56:29,174 INFO L481 AbstractCegarLoop]: Abstraction has 115 states and 127 transitions. [2020-10-26 19:56:29,174 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-26 19:56:29,174 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 127 transitions. [2020-10-26 19:56:29,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-26 19:56:29,175 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:56:29,175 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:56:29,175 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-26 19:56:29,175 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:56:29,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:56:29,176 INFO L82 PathProgramCache]: Analyzing trace with hash 1410430122, now seen corresponding path program 3 times [2020-10-26 19:56:29,176 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:56:29,178 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [932604192] [2020-10-26 19:56:29,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:56:29,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:29,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:29,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:29,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-26 19:56:29,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:29,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 231 [2020-10-26 19:56:29,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:29,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-26 19:56:29,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-26 19:56:29,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-26 19:56:29,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:29,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:56:29,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:29,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:29,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:29,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:56:29,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:29,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 19:56:29,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:29,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:56:29,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:29,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:56:29,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:29,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:56:29,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:29,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:29,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:29,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:29,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:29,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:56:29,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:29,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:56:29,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:29,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:56:29,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:29,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-26 19:56:29,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:29,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:29,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:29,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:29,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:29,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:56:29,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:29,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:29,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:29,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:29,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:29,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-26 19:56:29,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:29,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:29,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:29,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:29,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:29,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:56:29,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:29,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:29,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:29,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:29,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:29,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-26 19:56:29,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:29,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:29,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:29,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:29,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:29,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:56:29,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:29,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:29,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:29,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:29,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:29,620 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 9 proven. 27 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-26 19:56:29,620 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [932604192] [2020-10-26 19:56:29,620 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:56:29,621 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-26 19:56:29,621 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126246669] [2020-10-26 19:56:29,621 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-26 19:56:29,621 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:56:29,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-26 19:56:29,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-10-26 19:56:29,622 INFO L87 Difference]: Start difference. First operand 115 states and 127 transitions. Second operand 11 states. [2020-10-26 19:56:30,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:56:30,307 INFO L93 Difference]: Finished difference Result 163 states and 183 transitions. [2020-10-26 19:56:30,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-26 19:56:30,308 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 58 [2020-10-26 19:56:30,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:56:30,309 INFO L225 Difference]: With dead ends: 163 [2020-10-26 19:56:30,309 INFO L226 Difference]: Without dead ends: 146 [2020-10-26 19:56:30,311 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=84, Invalid=378, Unknown=0, NotChecked=0, Total=462 [2020-10-26 19:56:30,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-10-26 19:56:30,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 120. [2020-10-26 19:56:30,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-10-26 19:56:30,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 133 transitions. [2020-10-26 19:56:30,340 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 133 transitions. Word has length 58 [2020-10-26 19:56:30,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:56:30,341 INFO L481 AbstractCegarLoop]: Abstraction has 120 states and 133 transitions. [2020-10-26 19:56:30,341 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-26 19:56:30,341 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 133 transitions. [2020-10-26 19:56:30,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-26 19:56:30,346 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:56:30,346 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:56:30,346 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-26 19:56:30,347 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:56:30,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:56:30,347 INFO L82 PathProgramCache]: Analyzing trace with hash -1266494978, now seen corresponding path program 3 times [2020-10-26 19:56:30,347 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:56:30,347 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1544372419] [2020-10-26 19:56:30,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:56:30,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:30,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:30,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:30,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:30,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:30,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:30,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:30,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:31,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:35,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:35,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-26 19:56:35,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-26 19:56:35,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-26 19:56:35,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:35,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-26 19:56:35,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:56:35,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-26 19:56:35,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:35,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:56:35,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:35,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:35,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:35,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:56:35,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:35,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 19:56:35,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:35,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:56:35,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:35,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:56:35,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:35,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:56:35,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:35,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:35,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:35,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:35,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:35,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 19:56:35,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:35,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:35,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:35,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:35,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:35,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-26 19:56:35,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:35,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:35,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:35,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:35,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:35,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:56:35,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:35,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:35,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:35,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:35,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:35,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-26 19:56:35,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:35,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:35,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:35,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:35,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:35,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:56:35,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:35,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:35,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:35,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:35,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:35,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-26 19:56:35,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:35,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:35,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:35,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:35,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:35,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 19:56:35,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:35,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:35,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:35,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:35,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:35,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-26 19:56:35,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:35,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:35,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:35,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:35,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:35,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:56:35,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:35,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:56:35,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:56:35,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:56:35,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:35,620 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 28 proven. 27 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-10-26 19:56:35,621 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1544372419] [2020-10-26 19:56:35,621 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:56:35,621 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-26 19:56:35,622 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287637345] [2020-10-26 19:56:35,622 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-26 19:56:35,622 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:56:35,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-26 19:56:35,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-10-26 19:56:35,623 INFO L87 Difference]: Start difference. First operand 120 states and 133 transitions. Second operand 12 states. [2020-10-26 19:56:36,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:56:36,272 INFO L93 Difference]: Finished difference Result 162 states and 181 transitions. [2020-10-26 19:56:36,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-26 19:56:36,272 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 67 [2020-10-26 19:56:36,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:56:36,274 INFO L225 Difference]: With dead ends: 162 [2020-10-26 19:56:36,274 INFO L226 Difference]: Without dead ends: 145 [2020-10-26 19:56:36,277 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2020-10-26 19:56:36,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-10-26 19:56:36,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 120. [2020-10-26 19:56:36,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-10-26 19:56:36,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 132 transitions. [2020-10-26 19:56:36,303 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 132 transitions. Word has length 67 [2020-10-26 19:56:36,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:56:36,304 INFO L481 AbstractCegarLoop]: Abstraction has 120 states and 132 transitions. [2020-10-26 19:56:36,304 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-26 19:56:36,304 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 132 transitions. [2020-10-26 19:56:36,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-26 19:56:36,308 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:56:36,308 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:56:36,308 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-26 19:56:36,308 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:56:36,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:56:36,309 INFO L82 PathProgramCache]: Analyzing trace with hash 1748608640, now seen corresponding path program 5 times [2020-10-26 19:56:36,309 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:56:36,309 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [546835581] [2020-10-26 19:56:36,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:56:36,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:36,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:36,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:37,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:37,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-26 19:56:37,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 19:56:37,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 749 [2020-10-26 19:56:37,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:37,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-26 19:56:37,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-26 19:56:37,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-26 19:56:37,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:37,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:56:37,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:37,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:37,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:37,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:56:37,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:37,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:56:37,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:37,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:56:37,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:37,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:56:37,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:37,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:56:37,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:37,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:37,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:37,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:37,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:37,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 19:56:37,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-26 19:56:37,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:37,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 19:56:37,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:37,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-26 19:56:37,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:37,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-26 19:56:37,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:37,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:37,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:37,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:37,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:37,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:56:37,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:37,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:37,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:37,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:37,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:37,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-26 19:56:37,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:37,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:37,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:37,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:37,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:37,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:56:37,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:37,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:37,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:37,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:37,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:37,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-26 19:56:37,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:37,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:37,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:37,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:37,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:37,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:56:37,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:37,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:37,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:37,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:37,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:37,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-26 19:56:37,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:37,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:37,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:37,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:37,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:37,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:56:37,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:37,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:37,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:37,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:37,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:37,372 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 50 proven. 6 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-26 19:56:37,373 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [546835581] [2020-10-26 19:56:37,373 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:56:37,373 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-26 19:56:37,373 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971640800] [2020-10-26 19:56:37,374 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-26 19:56:37,375 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:56:37,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-26 19:56:37,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2020-10-26 19:56:37,377 INFO L87 Difference]: Start difference. First operand 120 states and 132 transitions. Second operand 15 states. [2020-10-26 19:56:38,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:56:38,400 INFO L93 Difference]: Finished difference Result 233 states and 255 transitions. [2020-10-26 19:56:38,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-26 19:56:38,403 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 67 [2020-10-26 19:56:38,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:56:38,405 INFO L225 Difference]: With dead ends: 233 [2020-10-26 19:56:38,405 INFO L226 Difference]: Without dead ends: 141 [2020-10-26 19:56:38,407 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=153, Invalid=659, Unknown=0, NotChecked=0, Total=812 [2020-10-26 19:56:38,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2020-10-26 19:56:38,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 132. [2020-10-26 19:56:38,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-10-26 19:56:38,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 144 transitions. [2020-10-26 19:56:38,440 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 144 transitions. Word has length 67 [2020-10-26 19:56:38,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:56:38,440 INFO L481 AbstractCegarLoop]: Abstraction has 132 states and 144 transitions. [2020-10-26 19:56:38,440 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-26 19:56:38,440 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 144 transitions. [2020-10-26 19:56:38,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-26 19:56:38,441 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:56:38,441 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:56:38,442 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-26 19:56:38,442 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:56:38,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:56:38,442 INFO L82 PathProgramCache]: Analyzing trace with hash -77260487, now seen corresponding path program 6 times [2020-10-26 19:56:38,444 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:56:38,444 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1701676721] [2020-10-26 19:56:38,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:56:38,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:38,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:38,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:38,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-26 19:56:38,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:38,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 466 [2020-10-26 19:56:38,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:38,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-26 19:56:38,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-26 19:56:38,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-26 19:56:38,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:39,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:56:39,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:39,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:39,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:39,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:56:39,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:39,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 19:56:39,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:39,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:56:39,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:39,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:56:39,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:39,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:56:39,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:39,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:39,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:39,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:39,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:39,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:56:39,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:39,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:56:39,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:39,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:56:39,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:39,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-26 19:56:39,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:39,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:39,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:39,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:39,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:39,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:56:39,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:39,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:39,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:39,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:39,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:39,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-26 19:56:39,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:39,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:39,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:39,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:39,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:39,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:56:39,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:39,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:39,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:39,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:39,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:39,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-26 19:56:39,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:39,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:39,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:39,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:39,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:39,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:56:39,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:39,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:39,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:39,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:39,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:39,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-26 19:56:39,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:39,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:39,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:39,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:39,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:39,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:56:39,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:39,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:39,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:39,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:39,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:39,271 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 8 proven. 57 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-26 19:56:39,274 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1701676721] [2020-10-26 19:56:39,274 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:56:39,275 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-26 19:56:39,275 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769373889] [2020-10-26 19:56:39,275 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-26 19:56:39,276 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:56:39,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-26 19:56:39,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2020-10-26 19:56:39,277 INFO L87 Difference]: Start difference. First operand 132 states and 144 transitions. Second operand 16 states. [2020-10-26 19:56:40,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:56:40,524 INFO L93 Difference]: Finished difference Result 182 states and 203 transitions. [2020-10-26 19:56:40,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-26 19:56:40,524 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 71 [2020-10-26 19:56:40,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:56:40,526 INFO L225 Difference]: With dead ends: 182 [2020-10-26 19:56:40,526 INFO L226 Difference]: Without dead ends: 179 [2020-10-26 19:56:40,527 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=141, Invalid=1049, Unknown=0, NotChecked=0, Total=1190 [2020-10-26 19:56:40,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-10-26 19:56:40,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 146. [2020-10-26 19:56:40,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-10-26 19:56:40,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 160 transitions. [2020-10-26 19:56:40,552 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 160 transitions. Word has length 71 [2020-10-26 19:56:40,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:56:40,553 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 160 transitions. [2020-10-26 19:56:40,553 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-26 19:56:40,553 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 160 transitions. [2020-10-26 19:56:40,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-26 19:56:40,554 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:56:40,554 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:56:40,555 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-26 19:56:40,555 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:56:40,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:56:40,555 INFO L82 PathProgramCache]: Analyzing trace with hash -1362430983, now seen corresponding path program 4 times [2020-10-26 19:56:40,555 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:56:40,556 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2067212543] [2020-10-26 19:56:40,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:56:40,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:40,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:40,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:40,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-26 19:56:40,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:40,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 320 [2020-10-26 19:56:40,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:40,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-26 19:56:40,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-26 19:56:40,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-26 19:56:40,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:41,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:56:41,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:41,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:41,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:41,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:56:41,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:41,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:56:41,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:41,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:56:41,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:41,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:56:41,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:41,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:56:41,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:41,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:41,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:41,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:41,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:41,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:56:41,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:41,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:56:41,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:41,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:56:41,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:41,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-26 19:56:41,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:41,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:41,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:41,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:41,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:41,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:56:41,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:41,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:41,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:41,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:41,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:41,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-26 19:56:41,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:41,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:41,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:41,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:41,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:41,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:56:41,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:41,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:41,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:41,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:41,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:41,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-26 19:56:41,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:41,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:41,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:41,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:41,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:41,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:56:41,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:41,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:41,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:41,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:41,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:41,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-26 19:56:41,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:41,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:41,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:41,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:41,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:41,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:56:41,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:41,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:41,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:41,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:41,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:41,154 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 12 proven. 53 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-26 19:56:41,155 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2067212543] [2020-10-26 19:56:41,155 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:56:41,155 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-26 19:56:41,155 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699765596] [2020-10-26 19:56:41,156 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-26 19:56:41,156 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:56:41,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-26 19:56:41,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-10-26 19:56:41,157 INFO L87 Difference]: Start difference. First operand 146 states and 160 transitions. Second operand 14 states. [2020-10-26 19:56:42,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:56:42,262 INFO L93 Difference]: Finished difference Result 203 states and 227 transitions. [2020-10-26 19:56:42,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-26 19:56:42,263 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 71 [2020-10-26 19:56:42,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:56:42,264 INFO L225 Difference]: With dead ends: 203 [2020-10-26 19:56:42,265 INFO L226 Difference]: Without dead ends: 186 [2020-10-26 19:56:42,266 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=138, Invalid=854, Unknown=0, NotChecked=0, Total=992 [2020-10-26 19:56:42,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-10-26 19:56:42,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 151. [2020-10-26 19:56:42,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2020-10-26 19:56:42,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 166 transitions. [2020-10-26 19:56:42,307 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 166 transitions. Word has length 71 [2020-10-26 19:56:42,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:56:42,308 INFO L481 AbstractCegarLoop]: Abstraction has 151 states and 166 transitions. [2020-10-26 19:56:42,308 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-26 19:56:42,308 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 166 transitions. [2020-10-26 19:56:42,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-26 19:56:42,309 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:56:42,310 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:56:42,310 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-26 19:56:42,310 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:56:42,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:56:42,311 INFO L82 PathProgramCache]: Analyzing trace with hash -666903087, now seen corresponding path program 4 times [2020-10-26 19:56:42,311 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:56:42,311 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1120175174] [2020-10-26 19:56:42,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:56:42,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:42,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:42,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:42,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:42,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:42,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:42,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:43,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:46,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:46,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:47,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:47,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-26 19:56:47,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-26 19:56:47,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-26 19:56:47,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:47,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-26 19:56:47,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:56:47,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-26 19:56:47,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:47,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:56:47,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:47,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:47,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:47,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:56:47,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:47,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 19:56:47,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:47,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:56:47,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:47,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:56:47,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:47,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:56:47,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:47,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:47,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:47,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:47,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:47,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 19:56:47,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:47,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:47,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:47,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:47,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:47,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-26 19:56:47,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:47,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:47,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:47,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:47,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:47,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 19:56:47,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:47,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:47,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:47,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:47,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:47,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-26 19:56:47,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:47,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:47,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:47,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:47,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:47,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:56:47,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:47,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:47,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:47,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:47,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:47,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-26 19:56:47,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:47,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:47,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:47,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:47,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:47,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 19:56:47,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:47,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:47,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:47,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:47,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:47,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-26 19:56:47,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:47,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:47,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:47,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:47,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:47,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:56:47,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:47,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:47,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:47,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:47,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:47,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-26 19:56:47,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:47,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:47,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:47,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:47,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:47,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:56:47,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:47,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:56:47,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:56:47,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:56:47,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:47,671 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 36 proven. 53 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2020-10-26 19:56:47,671 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1120175174] [2020-10-26 19:56:47,671 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:56:47,672 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-26 19:56:47,674 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975506533] [2020-10-26 19:56:47,674 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-26 19:56:47,674 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:56:47,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-26 19:56:47,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2020-10-26 19:56:47,675 INFO L87 Difference]: Start difference. First operand 151 states and 166 transitions. Second operand 15 states. [2020-10-26 19:56:48,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:56:48,659 INFO L93 Difference]: Finished difference Result 195 states and 216 transitions. [2020-10-26 19:56:48,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-26 19:56:48,659 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 80 [2020-10-26 19:56:48,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:56:48,662 INFO L225 Difference]: With dead ends: 195 [2020-10-26 19:56:48,662 INFO L226 Difference]: Without dead ends: 178 [2020-10-26 19:56:48,663 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=132, Invalid=624, Unknown=0, NotChecked=0, Total=756 [2020-10-26 19:56:48,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-10-26 19:56:48,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 151. [2020-10-26 19:56:48,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2020-10-26 19:56:48,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 165 transitions. [2020-10-26 19:56:48,699 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 165 transitions. Word has length 80 [2020-10-26 19:56:48,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:56:48,699 INFO L481 AbstractCegarLoop]: Abstraction has 151 states and 165 transitions. [2020-10-26 19:56:48,699 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-26 19:56:48,699 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 165 transitions. [2020-10-26 19:56:48,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-26 19:56:48,702 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:56:48,702 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:56:48,704 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-26 19:56:48,705 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:56:48,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:56:48,705 INFO L82 PathProgramCache]: Analyzing trace with hash -1946766765, now seen corresponding path program 7 times [2020-10-26 19:56:48,705 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:56:48,706 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [312933355] [2020-10-26 19:56:48,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:56:48,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:48,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:49,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:49,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-26 19:56:49,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:49,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 427 [2020-10-26 19:56:49,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:49,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-26 19:56:49,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-26 19:56:49,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-26 19:56:49,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:49,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:56:49,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:49,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:49,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:49,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:56:49,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:49,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-26 19:56:49,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:49,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:56:49,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:49,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:56:49,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:49,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:56:49,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:49,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:49,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:49,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:49,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:49,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:56:49,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:49,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:56:49,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:49,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:56:49,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:49,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-26 19:56:49,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:49,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:49,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:49,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:49,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:49,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:56:49,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:49,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:49,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:49,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:49,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:49,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-26 19:56:49,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:49,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:49,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:49,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:49,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:49,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:56:49,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:49,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:49,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:49,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:49,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:49,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-26 19:56:49,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:49,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:49,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:49,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:49,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:49,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:56:49,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:49,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:49,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:49,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:49,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:49,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-26 19:56:49,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:49,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:49,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:49,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:49,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:49,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:56:49,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:49,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:49,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:49,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:49,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:49,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-26 19:56:49,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:49,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:49,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:49,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:49,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:49,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:56:49,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:49,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:49,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:49,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:49,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:49,523 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 10 proven. 80 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-26 19:56:49,524 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [312933355] [2020-10-26 19:56:49,524 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:56:49,524 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-26 19:56:49,524 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811235325] [2020-10-26 19:56:49,525 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-26 19:56:49,525 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:56:49,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-26 19:56:49,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2020-10-26 19:56:49,526 INFO L87 Difference]: Start difference. First operand 151 states and 165 transitions. Second operand 16 states. [2020-10-26 19:56:51,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:56:51,058 INFO L93 Difference]: Finished difference Result 202 states and 225 transitions. [2020-10-26 19:56:51,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-26 19:56:51,060 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 80 [2020-10-26 19:56:51,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:56:51,061 INFO L225 Difference]: With dead ends: 202 [2020-10-26 19:56:51,061 INFO L226 Difference]: Without dead ends: 199 [2020-10-26 19:56:51,063 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 242 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=159, Invalid=1323, Unknown=0, NotChecked=0, Total=1482 [2020-10-26 19:56:51,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2020-10-26 19:56:51,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 165. [2020-10-26 19:56:51,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2020-10-26 19:56:51,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 181 transitions. [2020-10-26 19:56:51,094 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 181 transitions. Word has length 80 [2020-10-26 19:56:51,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:56:51,095 INFO L481 AbstractCegarLoop]: Abstraction has 165 states and 181 transitions. [2020-10-26 19:56:51,095 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-26 19:56:51,095 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 181 transitions. [2020-10-26 19:56:51,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-26 19:56:51,096 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:56:51,097 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:56:51,097 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-26 19:56:51,097 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:56:51,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:56:51,097 INFO L82 PathProgramCache]: Analyzing trace with hash -404481263, now seen corresponding path program 5 times [2020-10-26 19:56:51,098 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:56:51,098 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [196576444] [2020-10-26 19:56:51,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:56:51,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:51,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:51,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:51,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-26 19:56:51,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:51,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 259 [2020-10-26 19:56:51,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:51,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-26 19:56:51,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-26 19:56:51,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-26 19:56:51,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:51,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:56:51,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:51,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:51,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:51,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:56:51,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:51,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:56:51,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:51,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:56:51,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:51,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:56:51,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:51,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:56:51,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:51,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:51,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:51,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:51,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:51,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:56:51,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:51,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:56:51,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:51,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:56:51,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:51,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-26 19:56:51,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:51,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:51,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:51,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:51,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:51,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:56:51,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:51,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:51,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:51,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:51,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:51,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-26 19:56:51,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:51,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:51,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:51,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:51,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:51,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:56:51,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:51,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:51,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:51,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:51,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:51,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-26 19:56:51,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:51,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:51,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:51,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:51,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:51,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:56:51,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:51,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:51,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:51,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:51,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:51,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-26 19:56:51,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:51,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:51,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:51,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:51,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:51,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:56:51,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:51,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:51,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:51,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:51,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:51,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-26 19:56:51,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:51,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:51,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:51,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:51,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:51,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:56:51,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:51,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:51,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:51,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:51,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:51,642 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 15 proven. 75 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-26 19:56:51,643 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [196576444] [2020-10-26 19:56:51,643 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:56:51,643 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-26 19:56:51,643 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13673870] [2020-10-26 19:56:51,643 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-26 19:56:51,644 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:56:51,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-26 19:56:51,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2020-10-26 19:56:51,644 INFO L87 Difference]: Start difference. First operand 165 states and 181 transitions. Second operand 14 states. [2020-10-26 19:56:52,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:56:52,934 INFO L93 Difference]: Finished difference Result 222 states and 248 transitions. [2020-10-26 19:56:52,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-26 19:56:52,935 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 80 [2020-10-26 19:56:52,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:56:52,938 INFO L225 Difference]: With dead ends: 222 [2020-10-26 19:56:52,938 INFO L226 Difference]: Without dead ends: 205 [2020-10-26 19:56:52,940 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=145, Invalid=1045, Unknown=0, NotChecked=0, Total=1190 [2020-10-26 19:56:52,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2020-10-26 19:56:52,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 170. [2020-10-26 19:56:52,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2020-10-26 19:56:52,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 187 transitions. [2020-10-26 19:56:52,969 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 187 transitions. Word has length 80 [2020-10-26 19:56:52,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:56:52,970 INFO L481 AbstractCegarLoop]: Abstraction has 170 states and 187 transitions. [2020-10-26 19:56:52,970 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-26 19:56:52,970 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 187 transitions. [2020-10-26 19:56:52,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-26 19:56:52,971 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:56:52,972 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:56:52,972 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-26 19:56:52,972 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:56:52,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:56:52,972 INFO L82 PathProgramCache]: Analyzing trace with hash 249553399, now seen corresponding path program 5 times [2020-10-26 19:56:52,973 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:56:52,973 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1796011338] [2020-10-26 19:56:52,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:56:52,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:53,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:53,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:53,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:53,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:53,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:53,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:53,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:53,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:57,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:57,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-26 19:56:57,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-26 19:56:58,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-26 19:56:58,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:58,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-26 19:56:58,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:56:58,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-26 19:56:58,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:58,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:56:58,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:58,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:58,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:58,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:56:58,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:58,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:56:58,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:58,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:56:58,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:58,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:56:58,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:58,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:56:58,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:58,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:58,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:58,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:58,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:58,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:56:58,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:58,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:58,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:58,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:58,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:58,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-26 19:56:58,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:58,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:58,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:58,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:58,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:58,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:56:58,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:58,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:58,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:58,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:58,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:58,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-26 19:56:58,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:58,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:58,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:58,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:58,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:58,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:56:58,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:58,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:58,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:58,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:58,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:58,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-26 19:56:58,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:58,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:58,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:58,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:58,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:58,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:56:58,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:58,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:58,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:58,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:58,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:58,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-26 19:56:58,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:58,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:58,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:58,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:58,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:58,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:56:58,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:58,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:58,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:58,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:58,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:58,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-26 19:56:58,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:58,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:58,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:58,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:58,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:58,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:56:58,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:58,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:56:58,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:56:58,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:56:58,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:58,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-26 19:56:58,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:58,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:58,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:56:58,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:56:58,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:56:58,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:56:58,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:56:58,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:56:58,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:56:58,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:56:58,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:56:58,300 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 44 proven. 75 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2020-10-26 19:56:58,301 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1796011338] [2020-10-26 19:56:58,301 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:56:58,301 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-26 19:56:58,301 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043086979] [2020-10-26 19:56:58,302 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-26 19:56:58,302 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:56:58,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-26 19:56:58,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2020-10-26 19:56:58,303 INFO L87 Difference]: Start difference. First operand 170 states and 187 transitions. Second operand 15 states. [2020-10-26 19:56:59,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:56:59,478 INFO L93 Difference]: Finished difference Result 217 states and 241 transitions. [2020-10-26 19:56:59,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-26 19:56:59,479 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 89 [2020-10-26 19:56:59,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:56:59,481 INFO L225 Difference]: With dead ends: 217 [2020-10-26 19:56:59,481 INFO L226 Difference]: Without dead ends: 200 [2020-10-26 19:56:59,482 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=136, Invalid=734, Unknown=0, NotChecked=0, Total=870 [2020-10-26 19:56:59,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2020-10-26 19:56:59,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 170. [2020-10-26 19:56:59,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2020-10-26 19:56:59,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 186 transitions. [2020-10-26 19:56:59,508 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 186 transitions. Word has length 89 [2020-10-26 19:56:59,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:56:59,508 INFO L481 AbstractCegarLoop]: Abstraction has 170 states and 186 transitions. [2020-10-26 19:56:59,508 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-26 19:56:59,508 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 186 transitions. [2020-10-26 19:56:59,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-26 19:56:59,509 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:56:59,510 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:56:59,510 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-26 19:56:59,510 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:56:59,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:56:59,510 INFO L82 PathProgramCache]: Analyzing trace with hash -1030310279, now seen corresponding path program 8 times [2020-10-26 19:56:59,511 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:56:59,511 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1083127149] [2020-10-26 19:56:59,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:56:59,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:56:59,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:56:59,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:00,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:00,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-26 19:57:00,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 19:57:00,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 594 [2020-10-26 19:57:00,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:00,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-26 19:57:00,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-26 19:57:00,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-26 19:57:00,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:00,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:57:00,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:00,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:00,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:00,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:57:00,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:00,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:57:00,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:00,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:57:00,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:00,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:57:00,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:00,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:57:00,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:00,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:00,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:00,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:00,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:00,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 19:57:00,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-26 19:57:00,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:00,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:00,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:00,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:00,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:00,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-26 19:57:00,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:00,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:00,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:00,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:00,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:00,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:57:00,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:00,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:00,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:00,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:00,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:00,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-26 19:57:00,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:00,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:00,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:00,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:00,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:00,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:57:00,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:00,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:00,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:00,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:00,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:00,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-26 19:57:00,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:00,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:00,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:00,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:00,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:00,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:57:00,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:00,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:00,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:00,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:00,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:00,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-26 19:57:00,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:00,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:00,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:00,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:00,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:00,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:57:00,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:00,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:00,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:00,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:00,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:00,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-26 19:57:00,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:00,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:00,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:00,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:00,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:00,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:57:00,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:00,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:00,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:00,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:00,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:00,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-26 19:57:00,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:00,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:00,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:00,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:00,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:00,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:57:00,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:00,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:00,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:00,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:00,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:00,544 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 105 proven. 15 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-10-26 19:57:00,545 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1083127149] [2020-10-26 19:57:00,545 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:57:00,545 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-26 19:57:00,545 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380855709] [2020-10-26 19:57:00,546 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-26 19:57:00,546 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:57:00,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-26 19:57:00,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2020-10-26 19:57:00,547 INFO L87 Difference]: Start difference. First operand 170 states and 186 transitions. Second operand 16 states. [2020-10-26 19:57:01,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:57:01,481 INFO L93 Difference]: Finished difference Result 321 states and 351 transitions. [2020-10-26 19:57:01,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-26 19:57:01,481 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 89 [2020-10-26 19:57:01,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:57:01,483 INFO L225 Difference]: With dead ends: 321 [2020-10-26 19:57:01,483 INFO L226 Difference]: Without dead ends: 191 [2020-10-26 19:57:01,485 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=199, Invalid=731, Unknown=0, NotChecked=0, Total=930 [2020-10-26 19:57:01,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2020-10-26 19:57:01,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 182. [2020-10-26 19:57:01,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2020-10-26 19:57:01,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 198 transitions. [2020-10-26 19:57:01,509 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 198 transitions. Word has length 89 [2020-10-26 19:57:01,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:57:01,509 INFO L481 AbstractCegarLoop]: Abstraction has 182 states and 198 transitions. [2020-10-26 19:57:01,509 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-26 19:57:01,509 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 198 transitions. [2020-10-26 19:57:01,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-26 19:57:01,510 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:57:01,510 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:57:01,511 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-26 19:57:01,511 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:57:01,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:57:01,511 INFO L82 PathProgramCache]: Analyzing trace with hash -2020054926, now seen corresponding path program 9 times [2020-10-26 19:57:01,511 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:57:01,512 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [155516166] [2020-10-26 19:57:01,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:57:01,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:01,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:01,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:01,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-26 19:57:01,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:01,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 408 [2020-10-26 19:57:01,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:01,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-26 19:57:01,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-26 19:57:01,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-26 19:57:01,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:02,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:57:02,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:02,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:02,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:02,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:57:02,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:02,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-26 19:57:02,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:02,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:57:02,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:02,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:57:02,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 19:57:02,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:57:02,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:02,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:02,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:02,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:02,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:02,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:57:02,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:02,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:57:02,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:02,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:57:02,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 19:57:02,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-26 19:57:02,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:02,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:02,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:02,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:02,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:02,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:57:02,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:02,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:02,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:02,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:02,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:02,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-26 19:57:02,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:02,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:02,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:02,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:02,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:02,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:57:02,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:02,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:02,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:02,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:02,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:02,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-26 19:57:02,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:02,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:02,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:02,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:02,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:02,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:57:02,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:02,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:02,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:02,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:02,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:02,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-26 19:57:02,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:02,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:02,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:02,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:02,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:02,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:57:02,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:02,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:02,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:02,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:02,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:02,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-26 19:57:02,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:02,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:02,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:02,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:02,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:02,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:57:02,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:02,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:02,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:02,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:02,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:02,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-26 19:57:02,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:02,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:02,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:02,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:02,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:02,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:57:02,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:02,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:02,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:02,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:02,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:02,448 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 12 proven. 121 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-10-26 19:57:02,448 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [155516166] [2020-10-26 19:57:02,448 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:57:02,448 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-26 19:57:02,449 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831871700] [2020-10-26 19:57:02,449 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-26 19:57:02,449 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:57:02,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-26 19:57:02,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2020-10-26 19:57:02,451 INFO L87 Difference]: Start difference. First operand 182 states and 198 transitions. Second operand 19 states. [2020-10-26 19:57:04,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:57:04,302 INFO L93 Difference]: Finished difference Result 237 states and 263 transitions. [2020-10-26 19:57:04,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-26 19:57:04,303 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 93 [2020-10-26 19:57:04,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:57:04,305 INFO L225 Difference]: With dead ends: 237 [2020-10-26 19:57:04,305 INFO L226 Difference]: Without dead ends: 234 [2020-10-26 19:57:04,306 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 393 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=204, Invalid=1776, Unknown=0, NotChecked=0, Total=1980 [2020-10-26 19:57:04,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2020-10-26 19:57:04,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 196. [2020-10-26 19:57:04,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-10-26 19:57:04,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 214 transitions. [2020-10-26 19:57:04,339 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 214 transitions. Word has length 93 [2020-10-26 19:57:04,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:57:04,340 INFO L481 AbstractCegarLoop]: Abstraction has 196 states and 214 transitions. [2020-10-26 19:57:04,340 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-26 19:57:04,340 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 214 transitions. [2020-10-26 19:57:04,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-26 19:57:04,341 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:57:04,341 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:57:04,341 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-26 19:57:04,342 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:57:04,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:57:04,342 INFO L82 PathProgramCache]: Analyzing trace with hash -2090106702, now seen corresponding path program 6 times [2020-10-26 19:57:04,342 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:57:04,342 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [569253178] [2020-10-26 19:57:04,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:57:04,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:04,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:04,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:04,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-26 19:57:04,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:04,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 324 [2020-10-26 19:57:04,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:04,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-26 19:57:04,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-26 19:57:04,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-26 19:57:04,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:04,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:57:04,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:04,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:04,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:04,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:57:04,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:04,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 19:57:04,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:04,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:57:04,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:04,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:57:04,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:04,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:57:04,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:04,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:04,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:04,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:04,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:04,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:57:04,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:04,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:57:04,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:04,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:57:04,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:04,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-26 19:57:04,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:04,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:04,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:04,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:04,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:04,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:57:04,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:04,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:04,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:04,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:04,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:04,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-26 19:57:04,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:04,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:04,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:04,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:04,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:04,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:57:04,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:04,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:04,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:04,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:04,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:04,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-26 19:57:04,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:04,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:04,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:04,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:04,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:04,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:57:04,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:04,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:04,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:04,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:04,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:04,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-26 19:57:04,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:04,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:04,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:04,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:04,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:04,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:57:04,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:05,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:05,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:05,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:05,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:05,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-26 19:57:05,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:05,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:05,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:05,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:05,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:05,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:57:05,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:05,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:05,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:05,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:05,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:05,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-26 19:57:05,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:05,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:05,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:05,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:05,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:05,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:57:05,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:05,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:05,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:05,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:05,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:05,042 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 18 proven. 115 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-10-26 19:57:05,042 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [569253178] [2020-10-26 19:57:05,042 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:57:05,042 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-26 19:57:05,042 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573116709] [2020-10-26 19:57:05,044 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-26 19:57:05,044 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:57:05,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-26 19:57:05,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2020-10-26 19:57:05,047 INFO L87 Difference]: Start difference. First operand 196 states and 214 transitions. Second operand 17 states. [2020-10-26 19:57:06,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:57:06,853 INFO L93 Difference]: Finished difference Result 258 states and 287 transitions. [2020-10-26 19:57:06,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-26 19:57:06,854 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 93 [2020-10-26 19:57:06,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:57:06,857 INFO L225 Difference]: With dead ends: 258 [2020-10-26 19:57:06,857 INFO L226 Difference]: Without dead ends: 241 [2020-10-26 19:57:06,859 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 401 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=219, Invalid=1673, Unknown=0, NotChecked=0, Total=1892 [2020-10-26 19:57:06,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2020-10-26 19:57:06,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 201. [2020-10-26 19:57:06,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201 states. [2020-10-26 19:57:06,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 220 transitions. [2020-10-26 19:57:06,888 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 220 transitions. Word has length 93 [2020-10-26 19:57:06,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:57:06,888 INFO L481 AbstractCegarLoop]: Abstraction has 201 states and 220 transitions. [2020-10-26 19:57:06,888 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-26 19:57:06,888 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 220 transitions. [2020-10-26 19:57:06,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-26 19:57:06,889 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:57:06,890 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:57:06,890 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-26 19:57:06,890 INFO L429 AbstractCegarLoop]: === Iteration 31 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:57:06,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:57:06,890 INFO L82 PathProgramCache]: Analyzing trace with hash 1672453816, now seen corresponding path program 6 times [2020-10-26 19:57:06,891 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:57:06,891 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1285686978] [2020-10-26 19:57:06,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:57:06,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:06,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:06,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:07,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:07,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:07,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:07,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:07,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:07,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:11,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:11,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-26 19:57:11,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-26 19:57:11,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-26 19:57:11,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:11,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-26 19:57:11,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:57:11,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-26 19:57:11,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:12,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:57:12,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:12,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:12,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:12,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:57:12,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:12,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:57:12,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:12,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:57:12,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:12,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:57:12,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:12,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:57:12,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:12,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:12,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:12,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:12,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:12,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:57:12,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:12,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:12,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:12,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:12,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:12,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-26 19:57:12,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:12,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:12,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:12,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:12,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:12,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:57:12,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:12,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:12,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:12,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:12,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:12,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-26 19:57:12,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:12,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:12,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:12,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:12,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:12,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:57:12,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:12,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:12,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:12,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:12,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:12,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-26 19:57:12,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:12,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:12,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:12,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:12,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:12,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:57:12,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:12,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:12,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:12,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:12,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:12,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-26 19:57:12,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:12,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:12,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:12,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:12,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:12,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:57:12,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:12,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:12,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:12,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:12,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:12,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-26 19:57:12,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:12,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:12,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:12,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:12,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:12,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:57:12,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:12,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:12,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:12,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:12,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:12,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-26 19:57:12,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:12,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:12,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:12,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:12,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:12,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:57:12,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:12,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:12,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:12,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:12,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:12,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-26 19:57:12,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:12,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:12,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:12,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:12,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:12,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:57:12,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:12,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 19:57:12,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-26 19:57:12,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:12,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:12,387 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 65 proven. 121 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-10-26 19:57:12,388 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1285686978] [2020-10-26 19:57:12,388 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:57:12,388 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-26 19:57:12,388 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703525539] [2020-10-26 19:57:12,388 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-26 19:57:12,388 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:57:12,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-26 19:57:12,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=337, Unknown=0, NotChecked=0, Total=380 [2020-10-26 19:57:12,389 INFO L87 Difference]: Start difference. First operand 201 states and 220 transitions. Second operand 20 states. [2020-10-26 19:57:14,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:57:14,244 INFO L93 Difference]: Finished difference Result 250 states and 276 transitions. [2020-10-26 19:57:14,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-26 19:57:14,245 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 102 [2020-10-26 19:57:14,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:57:14,247 INFO L225 Difference]: With dead ends: 250 [2020-10-26 19:57:14,247 INFO L226 Difference]: Without dead ends: 233 [2020-10-26 19:57:14,248 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 279 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=202, Invalid=1438, Unknown=0, NotChecked=0, Total=1640 [2020-10-26 19:57:14,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2020-10-26 19:57:14,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 201. [2020-10-26 19:57:14,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201 states. [2020-10-26 19:57:14,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 219 transitions. [2020-10-26 19:57:14,278 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 219 transitions. Word has length 102 [2020-10-26 19:57:14,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:57:14,278 INFO L481 AbstractCegarLoop]: Abstraction has 201 states and 219 transitions. [2020-10-26 19:57:14,278 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-26 19:57:14,278 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 219 transitions. [2020-10-26 19:57:14,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-26 19:57:14,279 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:57:14,279 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:57:14,279 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-26 19:57:14,280 INFO L429 AbstractCegarLoop]: === Iteration 32 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:57:14,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:57:14,280 INFO L82 PathProgramCache]: Analyzing trace with hash 392590138, now seen corresponding path program 10 times [2020-10-26 19:57:14,280 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:57:14,280 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [186185910] [2020-10-26 19:57:14,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:57:14,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:14,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:14,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:14,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-26 19:57:14,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:14,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 435 [2020-10-26 19:57:14,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:14,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-26 19:57:14,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-26 19:57:14,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-26 19:57:14,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:15,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:57:15,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:15,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:15,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:15,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:57:15,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:15,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:57:15,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:15,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:57:15,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:15,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:57:15,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:15,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:57:15,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:15,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:15,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:15,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:15,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:15,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:57:15,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:15,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:57:15,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:15,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:57:15,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:15,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-26 19:57:15,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:15,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:15,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:15,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:15,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:15,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:57:15,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:15,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:15,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:15,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:15,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:15,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-26 19:57:15,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:15,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:15,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:15,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:15,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:15,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:57:15,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:15,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:15,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:15,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:15,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:15,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-26 19:57:15,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:15,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:15,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:15,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:15,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:15,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:57:15,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:15,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:15,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:15,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:15,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:15,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-26 19:57:15,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:15,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:15,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:15,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:15,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:15,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:57:15,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:15,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:15,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:15,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:15,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:15,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-26 19:57:15,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:15,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:15,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:15,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:15,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:15,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:57:15,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:15,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:15,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:15,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:15,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:15,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-26 19:57:15,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:15,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:15,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:15,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:15,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:15,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:57:15,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:15,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:15,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:15,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:15,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:15,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-26 19:57:15,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:15,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:15,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:15,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:15,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:15,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:57:15,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:15,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:15,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:15,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:15,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:15,120 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 14 proven. 154 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-10-26 19:57:15,120 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [186185910] [2020-10-26 19:57:15,120 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:57:15,120 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-26 19:57:15,120 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195344218] [2020-10-26 19:57:15,121 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-26 19:57:15,121 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:57:15,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-26 19:57:15,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2020-10-26 19:57:15,121 INFO L87 Difference]: Start difference. First operand 201 states and 219 transitions. Second operand 19 states. [2020-10-26 19:57:17,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:57:17,467 INFO L93 Difference]: Finished difference Result 257 states and 285 transitions. [2020-10-26 19:57:17,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-10-26 19:57:17,468 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 102 [2020-10-26 19:57:17,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:57:17,470 INFO L225 Difference]: With dead ends: 257 [2020-10-26 19:57:17,471 INFO L226 Difference]: Without dead ends: 254 [2020-10-26 19:57:17,472 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 505 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=238, Invalid=2312, Unknown=0, NotChecked=0, Total=2550 [2020-10-26 19:57:17,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2020-10-26 19:57:17,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 215. [2020-10-26 19:57:17,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2020-10-26 19:57:17,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 235 transitions. [2020-10-26 19:57:17,509 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 235 transitions. Word has length 102 [2020-10-26 19:57:17,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:57:17,509 INFO L481 AbstractCegarLoop]: Abstraction has 215 states and 235 transitions. [2020-10-26 19:57:17,509 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-26 19:57:17,510 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 235 transitions. [2020-10-26 19:57:17,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-26 19:57:17,511 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:57:17,511 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:57:17,511 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-26 19:57:17,511 INFO L429 AbstractCegarLoop]: === Iteration 33 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:57:17,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:57:17,512 INFO L82 PathProgramCache]: Analyzing trace with hash -97268104, now seen corresponding path program 7 times [2020-10-26 19:57:17,512 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:57:17,512 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1730463043] [2020-10-26 19:57:17,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:57:17,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:17,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:17,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:17,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-26 19:57:17,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:17,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 355 [2020-10-26 19:57:17,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:17,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-26 19:57:17,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-26 19:57:17,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-26 19:57:17,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:18,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:57:18,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:18,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:18,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:18,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:57:18,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:18,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:57:18,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:18,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:57:18,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:18,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:57:18,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:18,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:57:18,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:18,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:18,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:18,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:18,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:18,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:57:18,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:18,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:57:18,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:18,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:57:18,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:18,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-26 19:57:18,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:18,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:18,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:18,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:18,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:18,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:57:18,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:18,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:18,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:18,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:18,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:18,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-26 19:57:18,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:18,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:18,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:18,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:18,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:18,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:57:18,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:18,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:18,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:18,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:18,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:18,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-26 19:57:18,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:18,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:18,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:18,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:18,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:18,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:57:18,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:18,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:18,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:18,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:18,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:18,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-26 19:57:18,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:18,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:18,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:18,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:18,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:18,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:57:18,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:18,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:18,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:18,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:18,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:18,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-26 19:57:18,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:18,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:18,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:18,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:18,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:18,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:57:18,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:18,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:18,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:18,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:18,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:18,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-26 19:57:18,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:18,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:18,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:18,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:18,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:18,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:57:18,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:18,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:18,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:18,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:18,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:18,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-26 19:57:18,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:18,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:18,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:18,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:18,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:18,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:57:18,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:18,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:18,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:18,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:18,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:18,246 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 21 proven. 147 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-10-26 19:57:18,246 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1730463043] [2020-10-26 19:57:18,246 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:57:18,246 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-26 19:57:18,246 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437417736] [2020-10-26 19:57:18,247 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-26 19:57:18,247 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:57:18,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-26 19:57:18,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2020-10-26 19:57:18,247 INFO L87 Difference]: Start difference. First operand 215 states and 235 transitions. Second operand 17 states. [2020-10-26 19:57:20,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:57:20,236 INFO L93 Difference]: Finished difference Result 277 states and 308 transitions. [2020-10-26 19:57:20,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-10-26 19:57:20,237 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 102 [2020-10-26 19:57:20,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:57:20,240 INFO L225 Difference]: With dead ends: 277 [2020-10-26 19:57:20,240 INFO L226 Difference]: Without dead ends: 260 [2020-10-26 19:57:20,241 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 440 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=225, Invalid=1937, Unknown=0, NotChecked=0, Total=2162 [2020-10-26 19:57:20,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2020-10-26 19:57:20,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 220. [2020-10-26 19:57:20,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2020-10-26 19:57:20,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 241 transitions. [2020-10-26 19:57:20,273 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 241 transitions. Word has length 102 [2020-10-26 19:57:20,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:57:20,274 INFO L481 AbstractCegarLoop]: Abstraction has 220 states and 241 transitions. [2020-10-26 19:57:20,274 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-26 19:57:20,274 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 241 transitions. [2020-10-26 19:57:20,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-26 19:57:20,275 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:57:20,276 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 8, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:57:20,276 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-26 19:57:20,276 INFO L429 AbstractCegarLoop]: === Iteration 34 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:57:20,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:57:20,276 INFO L82 PathProgramCache]: Analyzing trace with hash 1936536816, now seen corresponding path program 7 times [2020-10-26 19:57:20,277 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:57:20,277 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1469572552] [2020-10-26 19:57:20,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:57:20,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:20,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:20,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:20,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:20,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:20,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:20,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:21,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:21,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:25,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:25,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-26 19:57:25,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-26 19:57:25,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-26 19:57:25,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:25,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-26 19:57:25,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:57:25,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-26 19:57:25,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:25,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:57:25,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:25,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:25,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:25,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:57:25,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:25,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 19:57:25,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:25,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:57:25,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:25,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:57:25,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:25,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:57:25,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:25,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:25,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:25,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:25,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:25,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:57:25,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:25,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:25,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:25,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:25,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:25,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-26 19:57:25,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:25,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:25,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:25,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:25,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:25,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:57:25,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:25,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:25,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:25,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:25,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:25,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-26 19:57:25,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:25,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:25,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:25,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:25,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:25,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:57:25,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:25,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:25,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:25,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:25,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:25,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-26 19:57:25,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:25,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:25,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:25,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:25,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:25,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:57:25,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:25,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:25,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:25,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:25,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:25,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-26 19:57:25,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:25,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:25,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:25,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:25,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:25,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:57:25,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:25,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:25,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:25,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:25,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:25,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-26 19:57:25,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:25,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:25,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:25,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:25,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:25,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:57:25,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:25,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:25,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:25,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:25,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:25,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-26 19:57:25,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:25,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:25,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:25,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:25,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:25,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:57:25,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:25,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:25,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:25,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:25,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:25,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-26 19:57:25,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:25,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:25,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:25,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:25,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:25,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:57:25,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:25,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:25,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:25,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:25,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:25,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-26 19:57:25,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:25,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:25,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:25,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:25,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:25,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:57:25,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:25,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:57:25,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:57:25,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:57:25,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:25,713 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 60 proven. 147 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2020-10-26 19:57:25,713 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1469572552] [2020-10-26 19:57:25,713 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:57:25,713 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-26 19:57:25,714 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364865701] [2020-10-26 19:57:25,714 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-26 19:57:25,714 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:57:25,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-26 19:57:25,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2020-10-26 19:57:25,715 INFO L87 Difference]: Start difference. First operand 220 states and 241 transitions. Second operand 18 states. [2020-10-26 19:57:27,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:57:27,627 INFO L93 Difference]: Finished difference Result 272 states and 301 transitions. [2020-10-26 19:57:27,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-26 19:57:27,628 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 111 [2020-10-26 19:57:27,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:57:27,630 INFO L225 Difference]: With dead ends: 272 [2020-10-26 19:57:27,630 INFO L226 Difference]: Without dead ends: 255 [2020-10-26 19:57:27,636 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 302 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=220, Invalid=1502, Unknown=0, NotChecked=0, Total=1722 [2020-10-26 19:57:27,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2020-10-26 19:57:27,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 220. [2020-10-26 19:57:27,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2020-10-26 19:57:27,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 240 transitions. [2020-10-26 19:57:27,692 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 240 transitions. Word has length 111 [2020-10-26 19:57:27,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:57:27,692 INFO L481 AbstractCegarLoop]: Abstraction has 220 states and 240 transitions. [2020-10-26 19:57:27,692 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-26 19:57:27,693 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 240 transitions. [2020-10-26 19:57:27,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-26 19:57:27,695 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:57:27,696 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:57:27,696 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-26 19:57:27,696 INFO L429 AbstractCegarLoop]: === Iteration 35 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:57:27,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:57:27,696 INFO L82 PathProgramCache]: Analyzing trace with hash 656673138, now seen corresponding path program 11 times [2020-10-26 19:57:27,697 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:57:27,697 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [642387222] [2020-10-26 19:57:27,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:57:27,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:27,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:27,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:29,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:29,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-26 19:57:29,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 19:57:29,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1442 [2020-10-26 19:57:29,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:29,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-26 19:57:29,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-26 19:57:29,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-26 19:57:29,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:29,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:57:29,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:29,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:29,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:29,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:57:29,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:29,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:57:29,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:29,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:57:29,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:29,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:57:29,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:29,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:57:29,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:29,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:29,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:29,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:29,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:29,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 19:57:29,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 19:57:29,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:29,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:29,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:29,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:29,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:29,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-26 19:57:29,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:29,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:29,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:29,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:29,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:29,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:57:29,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:29,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:29,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:29,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:29,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:29,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-26 19:57:29,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:29,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:29,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:29,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:29,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:29,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:57:29,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:29,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:29,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:29,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:29,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:29,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-26 19:57:29,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:29,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:29,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:29,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:29,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:29,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:57:29,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:29,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:29,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:29,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:29,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:29,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-26 19:57:29,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:29,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:29,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:29,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:29,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:29,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:57:29,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:29,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:29,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:29,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:29,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:29,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-26 19:57:29,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:29,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:29,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:29,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:29,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:29,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:57:29,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:29,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:29,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:29,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:29,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:29,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-26 19:57:29,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:29,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:29,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:29,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:29,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:29,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:57:29,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:29,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:29,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:29,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:29,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:29,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-26 19:57:29,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:29,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:29,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:29,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:29,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:29,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:57:29,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:29,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:29,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:29,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:29,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:29,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-26 19:57:29,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:29,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:29,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:29,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:29,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:29,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:57:29,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:29,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:29,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:29,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:29,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:29,573 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 180 proven. 28 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2020-10-26 19:57:29,573 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [642387222] [2020-10-26 19:57:29,573 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:57:29,573 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-26 19:57:29,574 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909485436] [2020-10-26 19:57:29,575 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-26 19:57:29,575 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:57:29,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-26 19:57:29,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=261, Unknown=0, NotChecked=0, Total=342 [2020-10-26 19:57:29,576 INFO L87 Difference]: Start difference. First operand 220 states and 240 transitions. Second operand 19 states. [2020-10-26 19:57:30,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:57:30,771 INFO L93 Difference]: Finished difference Result 409 states and 447 transitions. [2020-10-26 19:57:30,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-26 19:57:30,772 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 111 [2020-10-26 19:57:30,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:57:30,774 INFO L225 Difference]: With dead ends: 409 [2020-10-26 19:57:30,774 INFO L226 Difference]: Without dead ends: 241 [2020-10-26 19:57:30,775 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=277, Invalid=1055, Unknown=0, NotChecked=0, Total=1332 [2020-10-26 19:57:30,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2020-10-26 19:57:30,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 232. [2020-10-26 19:57:30,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232 states. [2020-10-26 19:57:30,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 252 transitions. [2020-10-26 19:57:30,829 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 252 transitions. Word has length 111 [2020-10-26 19:57:30,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:57:30,830 INFO L481 AbstractCegarLoop]: Abstraction has 232 states and 252 transitions. [2020-10-26 19:57:30,830 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-26 19:57:30,830 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 252 transitions. [2020-10-26 19:57:30,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-26 19:57:30,831 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:57:30,831 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:57:30,831 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-26 19:57:30,832 INFO L429 AbstractCegarLoop]: === Iteration 36 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:57:30,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:57:30,832 INFO L82 PathProgramCache]: Analyzing trace with hash 983108267, now seen corresponding path program 12 times [2020-10-26 19:57:30,832 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:57:30,832 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [566660051] [2020-10-26 19:57:30,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:57:30,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:30,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:31,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:31,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-26 19:57:31,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:31,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 623 [2020-10-26 19:57:31,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:31,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-26 19:57:31,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-26 19:57:31,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-26 19:57:31,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:31,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:57:31,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:31,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:31,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:31,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:57:31,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:31,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 19:57:31,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:31,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:57:31,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:31,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:57:31,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:31,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:57:31,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:31,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:31,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:31,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:31,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:31,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:57:31,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:31,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:57:31,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:31,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:57:31,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:31,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-26 19:57:31,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:31,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:31,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:31,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:31,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:31,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:57:31,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:31,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:31,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:31,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:31,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:31,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-26 19:57:31,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:31,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:31,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:31,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:31,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:31,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:57:31,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:31,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:31,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:31,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:31,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:31,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-26 19:57:31,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:31,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:31,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:31,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:31,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:31,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:57:31,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:31,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:31,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:31,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:31,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:31,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-26 19:57:31,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:31,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:31,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:31,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:31,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:31,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:57:31,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:31,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:31,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:31,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:31,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:31,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-26 19:57:31,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:31,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:31,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:31,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:31,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:31,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:57:31,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:31,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:31,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:31,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:31,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:31,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-26 19:57:31,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:31,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:31,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:31,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:31,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:31,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:57:31,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:31,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:31,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:31,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:31,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:31,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-26 19:57:31,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:31,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:31,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:31,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:31,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:31,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:57:31,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:31,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:31,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:31,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:31,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:31,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-26 19:57:31,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:31,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:31,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:31,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:31,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:31,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:57:31,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:31,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:31,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:31,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:31,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:32,022 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 16 proven. 209 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2020-10-26 19:57:32,023 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [566660051] [2020-10-26 19:57:32,023 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:57:32,023 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-26 19:57:32,023 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901074119] [2020-10-26 19:57:32,024 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-26 19:57:32,024 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:57:32,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-26 19:57:32,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=418, Unknown=0, NotChecked=0, Total=462 [2020-10-26 19:57:32,025 INFO L87 Difference]: Start difference. First operand 232 states and 252 transitions. Second operand 22 states. [2020-10-26 19:57:34,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:57:34,754 INFO L93 Difference]: Finished difference Result 292 states and 323 transitions. [2020-10-26 19:57:34,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-10-26 19:57:34,755 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 115 [2020-10-26 19:57:34,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:57:34,757 INFO L225 Difference]: With dead ends: 292 [2020-10-26 19:57:34,757 INFO L226 Difference]: Without dead ends: 289 [2020-10-26 19:57:34,759 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 688 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=284, Invalid=3022, Unknown=0, NotChecked=0, Total=3306 [2020-10-26 19:57:34,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2020-10-26 19:57:34,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 246. [2020-10-26 19:57:34,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 246 states. [2020-10-26 19:57:34,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 268 transitions. [2020-10-26 19:57:34,803 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 268 transitions. Word has length 115 [2020-10-26 19:57:34,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:57:34,803 INFO L481 AbstractCegarLoop]: Abstraction has 246 states and 268 transitions. [2020-10-26 19:57:34,803 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-26 19:57:34,803 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 268 transitions. [2020-10-26 19:57:34,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-26 19:57:34,805 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:57:34,805 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 8, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:57:34,805 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-26 19:57:34,805 INFO L429 AbstractCegarLoop]: === Iteration 37 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:57:34,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:57:34,806 INFO L82 PathProgramCache]: Analyzing trace with hash 287748203, now seen corresponding path program 8 times [2020-10-26 19:57:34,806 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:57:34,806 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1063970156] [2020-10-26 19:57:34,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:57:34,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:34,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:35,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:35,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-26 19:57:35,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:35,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 465 [2020-10-26 19:57:35,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:35,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-26 19:57:35,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-26 19:57:35,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-26 19:57:35,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:35,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:57:35,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:35,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:35,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:35,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:57:35,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:35,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 19:57:35,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:35,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:57:35,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:35,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:57:35,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:35,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:57:35,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:35,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:35,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:35,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:35,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:35,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:57:35,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:35,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:57:35,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:35,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:57:35,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 19:57:35,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-26 19:57:35,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:35,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:35,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:35,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:35,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:35,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:57:35,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:35,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:35,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:35,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:35,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:35,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-26 19:57:35,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:35,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:35,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:35,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:35,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:35,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:57:35,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:35,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:35,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:35,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:35,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:35,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-26 19:57:35,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:35,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:35,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:35,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:35,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:35,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:57:35,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:35,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:35,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:35,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:35,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:35,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-26 19:57:35,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:35,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:35,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:35,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:35,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:35,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:57:35,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:35,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:35,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:35,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:35,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:35,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-26 19:57:35,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:35,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:35,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:35,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:35,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:35,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:57:35,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:35,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:35,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:35,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:35,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:35,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-26 19:57:35,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:35,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:35,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:35,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:35,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:35,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:57:35,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:35,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:35,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:35,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:35,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:35,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-26 19:57:35,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:35,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:35,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:35,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:35,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:35,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:57:35,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:35,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:35,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:35,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:35,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:35,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-26 19:57:35,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:35,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:35,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:35,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:35,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:35,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:57:35,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:35,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:35,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:35,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:35,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:35,857 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 24 proven. 201 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2020-10-26 19:57:35,858 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1063970156] [2020-10-26 19:57:35,858 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:57:35,858 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-26 19:57:35,858 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882076627] [2020-10-26 19:57:35,859 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-26 19:57:35,859 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:57:35,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-26 19:57:35,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=340, Unknown=0, NotChecked=0, Total=380 [2020-10-26 19:57:35,860 INFO L87 Difference]: Start difference. First operand 246 states and 268 transitions. Second operand 20 states. [2020-10-26 19:57:38,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:57:38,830 INFO L93 Difference]: Finished difference Result 313 states and 347 transitions. [2020-10-26 19:57:38,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2020-10-26 19:57:38,831 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 115 [2020-10-26 19:57:38,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:57:38,834 INFO L225 Difference]: With dead ends: 313 [2020-10-26 19:57:38,834 INFO L226 Difference]: Without dead ends: 296 [2020-10-26 19:57:38,836 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 832 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=321, Invalid=3219, Unknown=0, NotChecked=0, Total=3540 [2020-10-26 19:57:38,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2020-10-26 19:57:38,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 251. [2020-10-26 19:57:38,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 251 states. [2020-10-26 19:57:38,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 274 transitions. [2020-10-26 19:57:38,883 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 274 transitions. Word has length 115 [2020-10-26 19:57:38,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:57:38,883 INFO L481 AbstractCegarLoop]: Abstraction has 251 states and 274 transitions. [2020-10-26 19:57:38,883 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-26 19:57:38,884 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 274 transitions. [2020-10-26 19:57:38,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-26 19:57:38,885 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:57:38,885 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 9, 9, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:57:38,885 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-26 19:57:38,886 INFO L429 AbstractCegarLoop]: === Iteration 38 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:57:38,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:57:38,886 INFO L82 PathProgramCache]: Analyzing trace with hash -291541857, now seen corresponding path program 8 times [2020-10-26 19:57:38,886 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:57:38,887 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [178432183] [2020-10-26 19:57:38,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:57:38,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:38,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:39,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:39,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:39,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:39,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:39,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:39,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:40,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:43,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:43,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-26 19:57:43,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-26 19:57:43,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-26 19:57:43,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:43,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-26 19:57:43,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:57:43,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-26 19:57:43,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:44,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:57:44,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:44,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:44,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:44,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:57:44,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:44,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:57:44,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:44,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:57:44,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:44,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:57:44,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:44,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:57:44,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:44,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:44,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:44,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:44,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:44,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:57:44,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:44,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:44,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:44,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:44,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:44,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-26 19:57:44,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:44,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:44,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:44,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:44,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:44,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:57:44,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:44,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:44,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:44,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:44,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:44,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-26 19:57:44,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:44,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:44,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:44,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:44,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:44,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:57:44,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:44,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:44,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:44,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:44,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:44,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-26 19:57:44,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:44,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:44,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:44,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:44,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:44,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:57:44,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:44,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:44,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:44,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:44,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:44,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-26 19:57:44,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:44,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:44,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:44,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:44,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:44,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:57:44,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:44,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:44,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:44,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:44,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:44,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-26 19:57:44,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:44,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:44,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:44,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:44,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:44,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:57:44,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:44,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:44,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:44,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:44,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:44,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-26 19:57:44,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:44,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:44,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:44,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:44,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:44,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:57:44,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:44,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:44,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:44,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:44,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:44,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-26 19:57:44,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:44,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:44,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:44,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:44,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:44,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:57:44,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:44,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:44,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:44,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:44,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:44,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-26 19:57:44,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:44,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:44,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:44,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:44,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:44,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:57:44,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:44,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:44,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:44,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:44,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:44,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-26 19:57:44,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:44,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:44,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:44,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:44,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:44,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:57:44,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:44,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 19:57:44,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-26 19:57:44,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:44,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:44,513 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 85 proven. 209 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2020-10-26 19:57:44,514 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [178432183] [2020-10-26 19:57:44,514 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:57:44,514 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-26 19:57:44,514 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534553492] [2020-10-26 19:57:44,516 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-26 19:57:44,516 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:57:44,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-26 19:57:44,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=455, Unknown=0, NotChecked=0, Total=506 [2020-10-26 19:57:44,517 INFO L87 Difference]: Start difference. First operand 251 states and 274 transitions. Second operand 23 states. [2020-10-26 19:57:47,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:57:47,548 INFO L93 Difference]: Finished difference Result 305 states and 336 transitions. [2020-10-26 19:57:47,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-26 19:57:47,548 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 124 [2020-10-26 19:57:47,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:57:47,550 INFO L225 Difference]: With dead ends: 305 [2020-10-26 19:57:47,550 INFO L226 Difference]: Without dead ends: 288 [2020-10-26 19:57:47,551 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 468 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=272, Invalid=2178, Unknown=0, NotChecked=0, Total=2450 [2020-10-26 19:57:47,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2020-10-26 19:57:47,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 251. [2020-10-26 19:57:47,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 251 states. [2020-10-26 19:57:47,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 273 transitions. [2020-10-26 19:57:47,597 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 273 transitions. Word has length 124 [2020-10-26 19:57:47,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:57:47,598 INFO L481 AbstractCegarLoop]: Abstraction has 251 states and 273 transitions. [2020-10-26 19:57:47,598 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-26 19:57:47,598 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 273 transitions. [2020-10-26 19:57:47,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-26 19:57:47,599 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:57:47,600 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 9, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:57:47,600 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-26 19:57:47,600 INFO L429 AbstractCegarLoop]: === Iteration 39 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:57:47,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:57:47,600 INFO L82 PathProgramCache]: Analyzing trace with hash -1571405535, now seen corresponding path program 13 times [2020-10-26 19:57:47,600 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:57:47,601 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [566118304] [2020-10-26 19:57:47,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:57:47,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:47,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:48,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:48,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-26 19:57:48,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:48,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 646 [2020-10-26 19:57:48,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:48,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-26 19:57:48,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-26 19:57:48,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-10-26 19:57:48,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:48,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:57:48,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:48,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:48,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:48,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:57:48,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:48,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 19:57:48,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:48,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:57:48,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:48,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:57:48,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:48,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:57:48,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:48,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:48,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:48,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:48,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:48,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:57:48,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:48,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:57:48,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:48,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:57:48,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:48,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-26 19:57:48,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:48,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:48,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:48,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:48,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:48,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:57:48,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:48,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:48,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:48,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:48,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:48,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-26 19:57:48,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:48,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:48,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:48,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:48,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:48,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:57:48,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:48,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:48,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:48,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:48,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:48,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-26 19:57:48,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:48,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:48,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:48,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:48,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:48,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:57:48,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:48,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:48,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:48,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:48,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:48,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-26 19:57:48,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:48,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:48,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:48,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:48,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:48,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:57:48,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:48,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:48,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:48,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:48,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:48,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-26 19:57:48,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:48,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:48,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:48,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:48,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:48,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:57:48,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:48,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:48,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:48,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:48,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:48,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-26 19:57:48,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:48,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:48,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:48,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:48,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:48,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:57:48,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:48,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:48,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:48,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:48,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:48,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-26 19:57:48,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:48,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:48,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:48,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:48,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:48,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:57:48,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:48,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:48,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:48,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:48,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:48,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-26 19:57:48,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:48,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:48,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:48,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:48,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:48,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:57:48,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:48,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:48,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:48,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:48,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:48,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-26 19:57:48,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:48,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:48,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:48,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:48,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:48,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:57:48,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:48,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:48,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:48,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:48,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:48,813 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 18 proven. 252 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2020-10-26 19:57:48,814 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [566118304] [2020-10-26 19:57:48,814 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:57:48,814 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-26 19:57:48,814 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032411408] [2020-10-26 19:57:48,814 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-26 19:57:48,815 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:57:48,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-26 19:57:48,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=421, Unknown=0, NotChecked=0, Total=462 [2020-10-26 19:57:48,816 INFO L87 Difference]: Start difference. First operand 251 states and 273 transitions. Second operand 22 states. [2020-10-26 19:57:52,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:57:52,235 INFO L93 Difference]: Finished difference Result 312 states and 345 transitions. [2020-10-26 19:57:52,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2020-10-26 19:57:52,236 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 124 [2020-10-26 19:57:52,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:57:52,239 INFO L225 Difference]: With dead ends: 312 [2020-10-26 19:57:52,239 INFO L226 Difference]: Without dead ends: 309 [2020-10-26 19:57:52,240 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 797 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=308, Invalid=3598, Unknown=0, NotChecked=0, Total=3906 [2020-10-26 19:57:52,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2020-10-26 19:57:52,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 265. [2020-10-26 19:57:52,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 265 states. [2020-10-26 19:57:52,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 289 transitions. [2020-10-26 19:57:52,289 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 289 transitions. Word has length 124 [2020-10-26 19:57:52,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:57:52,289 INFO L481 AbstractCegarLoop]: Abstraction has 265 states and 289 transitions. [2020-10-26 19:57:52,289 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-26 19:57:52,289 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 289 transitions. [2020-10-26 19:57:52,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-26 19:57:52,291 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:57:52,291 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 9, 9, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:57:52,291 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-26 19:57:52,291 INFO L429 AbstractCegarLoop]: === Iteration 40 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:57:52,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:57:52,291 INFO L82 PathProgramCache]: Analyzing trace with hash -1280295201, now seen corresponding path program 9 times [2020-10-26 19:57:52,292 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:57:52,292 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1293383616] [2020-10-26 19:57:52,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:57:52,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:52,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:52,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:52,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-26 19:57:52,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:52,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 599 [2020-10-26 19:57:52,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:52,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-26 19:57:52,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-26 19:57:52,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-26 19:57:52,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:53,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:57:53,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:53,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:53,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:53,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:57:53,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:53,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 19:57:53,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:53,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:57:53,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:53,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:57:53,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:53,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:57:53,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:53,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:53,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:53,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:53,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:53,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:57:53,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:53,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:57:53,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:53,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:57:53,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:53,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-26 19:57:53,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:53,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:53,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:53,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:53,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:53,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:57:53,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:53,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:53,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:53,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:53,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:53,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-26 19:57:53,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:53,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:53,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:53,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:53,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:53,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:57:53,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:53,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:53,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:53,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:53,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:53,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-26 19:57:53,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:53,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:53,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:53,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:53,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:53,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:57:53,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:53,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:53,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:53,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:53,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:53,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-26 19:57:53,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:53,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:53,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:53,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:53,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:53,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:57:53,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:53,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:53,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:53,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:53,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:53,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-26 19:57:53,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:53,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:53,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:53,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:53,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:53,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:57:53,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:53,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:53,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:53,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:53,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:53,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-26 19:57:53,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:53,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:53,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:53,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:53,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:53,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:57:53,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:53,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:53,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:53,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:53,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:53,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-26 19:57:53,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:53,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:53,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:53,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:53,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:53,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:57:53,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:53,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:53,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:53,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:53,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:53,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-26 19:57:53,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:53,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:53,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:53,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:53,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:53,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:57:53,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:53,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:53,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:53,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:53,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:53,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-26 19:57:53,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:53,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:53,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:53,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:53,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:53,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:57:53,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:53,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:53,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:53,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:53,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:53,501 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 27 proven. 243 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2020-10-26 19:57:53,502 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1293383616] [2020-10-26 19:57:53,502 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:57:53,502 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-26 19:57:53,502 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955127653] [2020-10-26 19:57:53,503 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-26 19:57:53,503 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:57:53,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-26 19:57:53,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=343, Unknown=0, NotChecked=0, Total=380 [2020-10-26 19:57:53,504 INFO L87 Difference]: Start difference. First operand 265 states and 289 transitions. Second operand 20 states. [2020-10-26 19:57:56,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:57:56,551 INFO L93 Difference]: Finished difference Result 332 states and 368 transitions. [2020-10-26 19:57:56,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2020-10-26 19:57:56,552 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 124 [2020-10-26 19:57:56,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:57:56,554 INFO L225 Difference]: With dead ends: 332 [2020-10-26 19:57:56,554 INFO L226 Difference]: Without dead ends: 315 [2020-10-26 19:57:56,556 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 841 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=316, Invalid=3466, Unknown=0, NotChecked=0, Total=3782 [2020-10-26 19:57:56,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2020-10-26 19:57:56,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 270. [2020-10-26 19:57:56,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 270 states. [2020-10-26 19:57:56,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 295 transitions. [2020-10-26 19:57:56,595 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 295 transitions. Word has length 124 [2020-10-26 19:57:56,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:57:56,596 INFO L481 AbstractCegarLoop]: Abstraction has 270 states and 295 transitions. [2020-10-26 19:57:56,596 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-26 19:57:56,596 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 295 transitions. [2020-10-26 19:57:56,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-10-26 19:57:56,597 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:57:56,597 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 10, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:57:56,597 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-26 19:57:56,598 INFO L429 AbstractCegarLoop]: === Iteration 41 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:57:56,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:57:56,598 INFO L82 PathProgramCache]: Analyzing trace with hash 54074089, now seen corresponding path program 9 times [2020-10-26 19:57:56,598 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:57:56,598 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [66021052] [2020-10-26 19:57:56,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:57:56,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:56,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:56,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:56,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:56,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:56,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:56,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:56,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:58,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:01,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:01,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-10-26 19:58:01,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-26 19:58:01,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-26 19:58:01,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:01,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-26 19:58:01,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:58:01,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-10-26 19:58:01,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:02,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:58:02,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:02,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:02,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:02,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:58:02,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:02,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:02,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:02,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:58:02,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:02,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:58:02,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:02,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:58:02,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:02,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:02,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:02,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:02,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:02,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:02,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:02,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:02,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:02,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:02,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:02,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-26 19:58:02,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:02,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:02,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:02,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:02,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:02,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:58:02,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:02,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:02,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:02,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:02,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:02,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-26 19:58:02,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:02,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:02,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:02,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:02,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:02,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:58:02,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:02,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:02,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:02,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:02,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:02,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-26 19:58:02,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:02,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:02,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:02,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:02,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:02,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:58:02,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:02,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:02,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:02,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:02,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:02,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-26 19:58:02,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:02,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:02,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:02,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:02,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:02,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:02,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:02,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:02,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:02,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:02,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:02,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-26 19:58:02,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:02,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:02,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:02,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:02,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:02,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:02,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:02,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:02,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:02,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:02,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:02,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-26 19:58:02,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:02,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:02,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:02,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:02,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:02,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:02,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:02,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:02,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:02,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:02,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:02,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-26 19:58:02,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:02,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:02,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:02,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:02,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:02,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:02,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:02,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:02,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:02,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:02,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:02,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-26 19:58:02,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:02,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:02,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:02,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:02,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:02,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:02,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:02,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:02,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:02,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:02,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:02,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-26 19:58:02,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:02,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:02,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:02,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:02,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:02,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:02,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:02,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:02,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:02,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:02,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:02,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-26 19:58:02,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:02,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:02,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:02,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:02,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:02,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:58:02,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:02,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:58:02,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:58:02,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:58:02,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:02,236 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 76 proven. 243 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2020-10-26 19:58:02,236 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [66021052] [2020-10-26 19:58:02,236 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:58:02,236 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-26 19:58:02,237 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650206726] [2020-10-26 19:58:02,237 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-26 19:58:02,237 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:58:02,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-26 19:58:02,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=376, Unknown=0, NotChecked=0, Total=420 [2020-10-26 19:58:02,238 INFO L87 Difference]: Start difference. First operand 270 states and 295 transitions. Second operand 21 states. [2020-10-26 19:58:05,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:58:05,257 INFO L93 Difference]: Finished difference Result 327 states and 361 transitions. [2020-10-26 19:58:05,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-10-26 19:58:05,258 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 133 [2020-10-26 19:58:05,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:58:05,260 INFO L225 Difference]: With dead ends: 327 [2020-10-26 19:58:05,261 INFO L226 Difference]: Without dead ends: 310 [2020-10-26 19:58:05,262 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 536 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=302, Invalid=2454, Unknown=0, NotChecked=0, Total=2756 [2020-10-26 19:58:05,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2020-10-26 19:58:05,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 270. [2020-10-26 19:58:05,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 270 states. [2020-10-26 19:58:05,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 294 transitions. [2020-10-26 19:58:05,330 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 294 transitions. Word has length 133 [2020-10-26 19:58:05,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:58:05,330 INFO L481 AbstractCegarLoop]: Abstraction has 270 states and 294 transitions. [2020-10-26 19:58:05,330 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-26 19:58:05,331 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 294 transitions. [2020-10-26 19:58:05,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-10-26 19:58:05,333 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:58:05,334 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 10, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:58:05,334 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-26 19:58:05,334 INFO L429 AbstractCegarLoop]: === Iteration 42 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:58:05,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:58:05,334 INFO L82 PathProgramCache]: Analyzing trace with hash -1225789589, now seen corresponding path program 14 times [2020-10-26 19:58:05,335 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:58:05,335 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1289574307] [2020-10-26 19:58:05,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:58:05,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:05,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:05,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:06,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:06,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-10-26 19:58:06,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 19:58:06,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1494 [2020-10-26 19:58:06,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:06,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-26 19:58:06,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-26 19:58:06,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-10-26 19:58:06,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:07,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:58:07,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:07,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:07,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:07,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:58:07,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:07,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:58:07,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:07,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:58:07,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:07,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:58:07,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:07,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:58:07,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:07,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:07,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:07,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:07,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:07,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 19:58:07,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-26 19:58:07,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:07,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:07,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:07,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:07,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:07,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-26 19:58:07,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:07,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:07,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:07,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:07,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:07,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:07,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:07,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:07,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:07,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:07,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:07,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-26 19:58:07,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:07,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:07,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:07,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:07,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:07,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:07,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:07,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:07,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:07,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:07,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:07,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-26 19:58:07,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:07,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:07,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:07,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:07,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:07,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:07,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:07,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:07,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:07,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:07,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:07,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-26 19:58:07,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:07,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:07,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:07,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:07,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:07,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:07,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:07,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:07,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:07,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:07,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:07,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-26 19:58:07,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:07,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:07,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:07,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:07,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:07,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:07,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:07,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:07,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:07,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:07,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:07,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-26 19:58:07,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:07,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:07,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:07,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:07,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:07,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:07,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:07,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:07,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:07,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:07,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:07,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-26 19:58:07,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:07,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:07,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:07,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:07,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:07,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:07,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:07,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:07,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:07,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:07,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:07,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-26 19:58:07,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:07,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:07,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:07,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:07,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:07,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:07,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:07,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:07,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:07,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:07,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:07,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-26 19:58:07,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:07,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:07,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:07,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:07,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:07,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:07,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:07,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:07,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:07,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:07,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:07,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-26 19:58:07,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:07,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:07,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:07,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:07,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:07,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:58:07,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:07,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:07,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:07,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:07,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:07,584 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 275 proven. 45 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2020-10-26 19:58:07,584 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1289574307] [2020-10-26 19:58:07,584 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:58:07,585 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-26 19:58:07,585 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272137409] [2020-10-26 19:58:07,586 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-26 19:58:07,586 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:58:07,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-26 19:58:07,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=351, Unknown=0, NotChecked=0, Total=462 [2020-10-26 19:58:07,587 INFO L87 Difference]: Start difference. First operand 270 states and 294 transitions. Second operand 22 states. [2020-10-26 19:58:09,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:58:09,562 INFO L93 Difference]: Finished difference Result 497 states and 543 transitions. [2020-10-26 19:58:09,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-26 19:58:09,562 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 133 [2020-10-26 19:58:09,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:58:09,564 INFO L225 Difference]: With dead ends: 497 [2020-10-26 19:58:09,564 INFO L226 Difference]: Without dead ends: 291 [2020-10-26 19:58:09,566 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 393 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=369, Invalid=1437, Unknown=0, NotChecked=0, Total=1806 [2020-10-26 19:58:09,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2020-10-26 19:58:09,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 282. [2020-10-26 19:58:09,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 282 states. [2020-10-26 19:58:09,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 306 transitions. [2020-10-26 19:58:09,615 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 306 transitions. Word has length 133 [2020-10-26 19:58:09,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:58:09,615 INFO L481 AbstractCegarLoop]: Abstraction has 282 states and 306 transitions. [2020-10-26 19:58:09,615 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-26 19:58:09,615 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 306 transitions. [2020-10-26 19:58:09,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-10-26 19:58:09,617 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:58:09,617 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 10, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:58:09,617 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-26 19:58:09,617 INFO L429 AbstractCegarLoop]: === Iteration 43 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:58:09,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:58:09,618 INFO L82 PathProgramCache]: Analyzing trace with hash 1263095780, now seen corresponding path program 15 times [2020-10-26 19:58:09,618 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:58:09,618 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1524045234] [2020-10-26 19:58:09,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:58:09,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:09,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:10,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:10,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-10-26 19:58:10,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:10,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 836 [2020-10-26 19:58:10,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:10,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-26 19:58:10,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-26 19:58:10,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-26 19:58:10,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:11,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:58:11,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:11,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:11,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:11,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:58:11,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:11,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:11,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:11,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:58:11,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:11,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:58:11,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:11,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:58:11,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:11,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:11,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:11,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:11,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:11,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:58:11,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:11,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:58:11,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:11,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:58:11,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:11,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-26 19:58:11,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:11,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:11,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:11,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:11,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:11,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:11,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:11,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:11,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:11,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:11,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:11,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-26 19:58:11,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:11,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:11,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:11,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:11,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:11,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:11,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:11,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:11,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:11,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:11,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:11,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-26 19:58:11,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:11,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:11,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:11,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:11,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:11,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:58:11,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:11,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:11,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:11,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:11,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:11,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-26 19:58:11,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:11,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:11,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:11,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:11,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:11,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:11,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:11,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:11,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:11,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:11,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:11,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-26 19:58:11,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:11,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:11,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:11,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:11,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:11,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:11,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:11,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:11,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:11,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:11,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:11,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-26 19:58:11,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:11,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:11,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:11,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:11,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:11,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:11,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:11,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:11,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:11,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:11,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:11,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-10-26 19:58:11,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:11,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:11,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:11,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:11,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:11,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:11,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:11,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:11,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:11,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:11,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:11,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-26 19:58:11,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:11,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:11,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:11,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:11,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:11,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-26 19:58:11,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:11,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:11,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:11,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:11,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:11,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-26 19:58:11,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:11,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:11,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:11,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:11,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:11,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:11,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:11,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:11,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:11,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:11,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:11,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-26 19:58:11,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:11,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:11,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:11,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:11,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:11,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:11,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:11,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:11,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:11,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:11,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:11,228 INFO L134 CoverageAnalysis]: Checked inductivity of 521 backedges. 20 proven. 321 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2020-10-26 19:58:11,229 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1524045234] [2020-10-26 19:58:11,229 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:58:11,229 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-26 19:58:11,229 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48085216] [2020-10-26 19:58:11,229 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-26 19:58:11,230 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:58:11,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-26 19:58:11,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=550, Unknown=0, NotChecked=0, Total=600 [2020-10-26 19:58:11,230 INFO L87 Difference]: Start difference. First operand 282 states and 306 transitions. Second operand 25 states. [2020-10-26 19:58:15,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:58:15,281 INFO L93 Difference]: Finished difference Result 347 states and 383 transitions. [2020-10-26 19:58:15,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2020-10-26 19:58:15,282 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 137 [2020-10-26 19:58:15,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:58:15,284 INFO L225 Difference]: With dead ends: 347 [2020-10-26 19:58:15,284 INFO L226 Difference]: Without dead ends: 344 [2020-10-26 19:58:15,286 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1015 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=362, Invalid=4330, Unknown=0, NotChecked=0, Total=4692 [2020-10-26 19:58:15,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2020-10-26 19:58:15,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 296. [2020-10-26 19:58:15,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 296 states. [2020-10-26 19:58:15,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 322 transitions. [2020-10-26 19:58:15,337 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 322 transitions. Word has length 137 [2020-10-26 19:58:15,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:58:15,337 INFO L481 AbstractCegarLoop]: Abstraction has 296 states and 322 transitions. [2020-10-26 19:58:15,337 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-26 19:58:15,338 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 322 transitions. [2020-10-26 19:58:15,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-10-26 19:58:15,339 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:58:15,339 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 10, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:58:15,339 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-26 19:58:15,339 INFO L429 AbstractCegarLoop]: === Iteration 44 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:58:15,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:58:15,340 INFO L82 PathProgramCache]: Analyzing trace with hash 986108708, now seen corresponding path program 10 times [2020-10-26 19:58:15,340 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:58:15,340 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [662977853] [2020-10-26 19:58:15,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:58:15,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:15,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:16,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:16,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-10-26 19:58:16,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:16,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 698 [2020-10-26 19:58:16,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:16,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-26 19:58:16,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-26 19:58:16,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-10-26 19:58:16,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:16,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:58:16,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:16,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:16,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:16,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:58:16,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:16,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:58:16,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:16,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:58:16,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:16,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:58:16,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:16,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:58:16,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:16,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:16,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:16,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:16,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:16,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:58:16,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:16,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:58:16,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:16,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:58:16,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:16,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-26 19:58:16,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:16,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:16,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:16,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:16,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:16,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:16,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:16,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:16,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:16,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:16,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:16,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-26 19:58:16,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:16,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:16,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:16,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:16,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:16,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:16,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:16,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:16,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:16,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:16,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:16,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-26 19:58:16,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:16,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:16,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:16,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:16,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:16,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:16,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:16,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:16,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:16,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:16,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:16,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-26 19:58:16,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:16,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:16,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:16,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:16,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:16,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:16,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:16,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:16,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:16,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:16,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:16,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-26 19:58:16,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:16,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:16,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:16,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:16,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:16,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:16,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:16,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:16,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:16,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:16,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:16,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-26 19:58:16,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:16,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:16,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:16,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:16,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:16,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:16,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:16,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:16,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:16,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:16,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:16,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-10-26 19:58:16,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:16,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:16,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:16,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:16,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:16,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:16,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:16,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:16,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:16,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:16,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:16,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-26 19:58:16,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:16,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:16,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:16,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:16,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:16,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:16,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:16,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:16,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:16,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:16,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:16,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-26 19:58:16,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:16,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:16,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:16,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:16,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:16,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:16,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:16,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:16,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:16,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:16,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:16,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-26 19:58:16,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:16,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:16,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:16,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:16,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:16,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:16,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:16,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:16,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:16,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:16,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:16,685 INFO L134 CoverageAnalysis]: Checked inductivity of 521 backedges. 30 proven. 311 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2020-10-26 19:58:16,685 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [662977853] [2020-10-26 19:58:16,685 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:58:16,685 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-26 19:58:16,687 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527322893] [2020-10-26 19:58:16,688 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-26 19:58:16,688 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:58:16,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-26 19:58:16,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=460, Unknown=0, NotChecked=0, Total=506 [2020-10-26 19:58:16,689 INFO L87 Difference]: Start difference. First operand 296 states and 322 transitions. Second operand 23 states. [2020-10-26 19:58:21,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:58:21,090 INFO L93 Difference]: Finished difference Result 368 states and 407 transitions. [2020-10-26 19:58:21,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2020-10-26 19:58:21,091 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 137 [2020-10-26 19:58:21,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:58:21,094 INFO L225 Difference]: With dead ends: 368 [2020-10-26 19:58:21,094 INFO L226 Difference]: Without dead ends: 351 [2020-10-26 19:58:21,096 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1288 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=414, Invalid=4842, Unknown=0, NotChecked=0, Total=5256 [2020-10-26 19:58:21,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2020-10-26 19:58:21,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 301. [2020-10-26 19:58:21,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 301 states. [2020-10-26 19:58:21,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 328 transitions. [2020-10-26 19:58:21,158 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 328 transitions. Word has length 137 [2020-10-26 19:58:21,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:58:21,158 INFO L481 AbstractCegarLoop]: Abstraction has 301 states and 328 transitions. [2020-10-26 19:58:21,158 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-26 19:58:21,158 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 328 transitions. [2020-10-26 19:58:21,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-26 19:58:21,160 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:58:21,160 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 11, 11, 11, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:58:21,160 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-10-26 19:58:21,160 INFO L429 AbstractCegarLoop]: === Iteration 45 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:58:21,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:58:21,161 INFO L82 PathProgramCache]: Analyzing trace with hash -741935226, now seen corresponding path program 10 times [2020-10-26 19:58:21,161 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:58:21,161 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1981946418] [2020-10-26 19:58:21,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:58:21,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:21,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:21,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:21,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:21,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:21,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:21,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:21,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:22,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:26,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:26,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-26 19:58:26,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-26 19:58:26,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-26 19:58:26,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:26,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-26 19:58:26,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:58:26,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 148 [2020-10-26 19:58:26,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:26,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:58:26,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:26,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:26,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:26,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:58:26,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:26,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:26,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:26,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:58:26,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:26,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:58:26,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:26,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:58:26,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:26,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:26,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:26,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:26,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:26,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:58:26,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:26,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:26,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:26,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:26,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:26,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-26 19:58:26,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:26,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:26,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:26,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:26,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:26,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:58:26,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:26,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:26,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:26,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:26,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:26,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-26 19:58:26,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:26,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:26,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:26,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:26,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:26,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:26,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:26,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:26,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:26,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:26,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:26,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-26 19:58:26,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:26,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:26,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:26,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:26,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:26,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:26,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:26,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:26,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:26,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:26,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:26,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-26 19:58:26,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:26,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:26,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:26,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:26,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:26,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:26,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:26,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:26,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:26,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:26,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:26,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-26 19:58:26,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:26,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:26,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:26,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:26,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:26,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:58:26,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:26,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:26,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:26,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:26,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:26,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-26 19:58:26,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:26,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:26,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:26,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:26,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:26,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:26,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:26,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:26,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:26,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:26,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:26,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-10-26 19:58:26,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:26,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:26,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:26,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:26,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:26,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:26,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:26,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:26,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:26,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:26,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:26,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-26 19:58:26,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:26,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:26,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:26,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:26,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:26,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:58:26,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:26,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:26,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:26,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:26,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:26,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-26 19:58:26,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:26,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:26,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:26,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:26,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:26,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:58:26,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:26,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:26,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:26,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:26,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:26,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-26 19:58:26,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:26,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:26,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:26,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:26,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:26,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:26,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:26,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:26,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:26,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:26,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:26,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-10-26 19:58:26,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:26,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:26,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:26,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:26,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:26,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:58:26,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:26,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:58:26,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:58:26,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:58:26,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:26,959 INFO L134 CoverageAnalysis]: Checked inductivity of 616 backedges. 84 proven. 311 refuted. 0 times theorem prover too weak. 221 trivial. 0 not checked. [2020-10-26 19:58:26,959 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1981946418] [2020-10-26 19:58:26,959 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:58:26,960 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-26 19:58:26,960 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206446613] [2020-10-26 19:58:26,960 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-26 19:58:26,960 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:58:26,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-26 19:58:26,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=499, Unknown=0, NotChecked=0, Total=552 [2020-10-26 19:58:26,961 INFO L87 Difference]: Start difference. First operand 301 states and 328 transitions. Second operand 24 states. [2020-10-26 19:58:30,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:58:30,933 INFO L93 Difference]: Finished difference Result 360 states and 396 transitions. [2020-10-26 19:58:30,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-10-26 19:58:30,934 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 146 [2020-10-26 19:58:30,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:58:30,937 INFO L225 Difference]: With dead ends: 360 [2020-10-26 19:58:30,937 INFO L226 Difference]: Without dead ends: 343 [2020-10-26 19:58:30,938 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 562 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=324, Invalid=2646, Unknown=0, NotChecked=0, Total=2970 [2020-10-26 19:58:30,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2020-10-26 19:58:30,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 301. [2020-10-26 19:58:30,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 301 states. [2020-10-26 19:58:31,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 327 transitions. [2020-10-26 19:58:31,000 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 327 transitions. Word has length 146 [2020-10-26 19:58:31,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:58:31,001 INFO L481 AbstractCegarLoop]: Abstraction has 301 states and 327 transitions. [2020-10-26 19:58:31,001 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-26 19:58:31,001 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 327 transitions. [2020-10-26 19:58:31,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-26 19:58:31,003 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:58:31,004 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 11, 11, 11, 11, 11, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:58:31,004 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-10-26 19:58:31,004 INFO L429 AbstractCegarLoop]: === Iteration 46 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:58:31,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:58:31,004 INFO L82 PathProgramCache]: Analyzing trace with hash -2021798904, now seen corresponding path program 16 times [2020-10-26 19:58:31,005 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:58:31,005 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [347519181] [2020-10-26 19:58:31,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:58:31,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:31,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:31,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:31,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-26 19:58:31,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:31,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 830 [2020-10-26 19:58:31,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:31,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-26 19:58:31,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-26 19:58:31,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 155 [2020-10-26 19:58:31,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:32,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:58:32,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:32,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:32,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:32,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:58:32,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:32,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:58:32,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:32,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:58:32,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:32,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:58:32,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:32,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:58:32,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:32,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:32,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:32,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:32,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:32,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:58:32,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:32,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:58:32,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:32,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:58:32,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:32,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-26 19:58:32,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:32,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:32,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:32,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:32,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:32,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:32,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:32,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:32,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:32,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:32,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:32,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-26 19:58:32,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:32,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:32,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:32,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:32,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:32,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:32,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:32,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:32,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:32,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:32,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:32,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-26 19:58:32,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:32,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:32,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:32,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:32,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:32,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:32,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:32,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:32,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:32,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:32,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:32,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-26 19:58:32,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:32,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:32,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:32,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:32,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:32,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:32,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:32,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:32,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:32,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:32,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:32,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-26 19:58:32,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:32,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:32,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:32,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:32,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:32,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:32,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:32,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:32,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:32,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:32,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:32,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-26 19:58:32,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:32,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:32,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:32,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:32,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:32,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:32,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:32,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:32,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:32,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:32,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:32,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-10-26 19:58:32,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:32,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:32,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:32,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:32,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:32,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:32,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:32,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:32,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:32,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:32,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:32,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-26 19:58:32,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:32,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:32,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:32,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:32,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:32,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:32,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:32,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:32,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:32,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:32,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:32,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-26 19:58:32,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:32,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:32,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:32,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:32,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:32,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:32,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:32,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:32,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:32,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:32,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:32,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-26 19:58:32,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:32,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:32,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:32,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:32,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:32,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:32,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:32,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:32,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:32,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:32,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:32,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-10-26 19:58:32,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:32,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:32,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:32,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:32,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:32,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:32,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:32,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:32,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:32,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:32,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:32,612 INFO L134 CoverageAnalysis]: Checked inductivity of 616 backedges. 22 proven. 374 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2020-10-26 19:58:32,612 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [347519181] [2020-10-26 19:58:32,612 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:58:32,612 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-26 19:58:32,613 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389097054] [2020-10-26 19:58:32,613 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-26 19:58:32,613 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:58:32,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-26 19:58:32,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=553, Unknown=0, NotChecked=0, Total=600 [2020-10-26 19:58:32,614 INFO L87 Difference]: Start difference. First operand 301 states and 327 transitions. Second operand 25 states. [2020-10-26 19:58:38,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:58:38,050 INFO L93 Difference]: Finished difference Result 367 states and 405 transitions. [2020-10-26 19:58:38,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2020-10-26 19:58:38,052 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 146 [2020-10-26 19:58:38,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:58:38,055 INFO L225 Difference]: With dead ends: 367 [2020-10-26 19:58:38,056 INFO L226 Difference]: Without dead ends: 364 [2020-10-26 19:58:38,057 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1246 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=397, Invalid=5303, Unknown=0, NotChecked=0, Total=5700 [2020-10-26 19:58:38,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2020-10-26 19:58:38,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 315. [2020-10-26 19:58:38,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 315 states. [2020-10-26 19:58:38,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 343 transitions. [2020-10-26 19:58:38,147 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 343 transitions. Word has length 146 [2020-10-26 19:58:38,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:58:38,148 INFO L481 AbstractCegarLoop]: Abstraction has 315 states and 343 transitions. [2020-10-26 19:58:38,148 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-26 19:58:38,148 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 343 transitions. [2020-10-26 19:58:38,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-26 19:58:38,151 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:58:38,151 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 11, 11, 11, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:58:38,151 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-10-26 19:58:38,151 INFO L429 AbstractCegarLoop]: === Iteration 47 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:58:38,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:58:38,152 INFO L82 PathProgramCache]: Analyzing trace with hash -1473700794, now seen corresponding path program 11 times [2020-10-26 19:58:38,152 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:58:38,152 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1965738985] [2020-10-26 19:58:38,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:58:38,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:38,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:39,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:39,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-26 19:58:39,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:39,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1050 [2020-10-26 19:58:39,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:39,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-26 19:58:39,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-26 19:58:39,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 150 [2020-10-26 19:58:39,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:39,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:58:39,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:39,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:39,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:39,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:58:39,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:39,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:58:39,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:39,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:58:39,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:39,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:58:39,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:39,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:58:39,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:39,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:39,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:39,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:39,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:39,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:39,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:39,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:58:39,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:39,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:58:39,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:39,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-26 19:58:39,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:39,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:39,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:39,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:39,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:39,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:39,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:39,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:39,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:39,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:39,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:39,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-26 19:58:39,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:39,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:39,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:39,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:39,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:39,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:39,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:39,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:39,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:39,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:39,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:39,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-26 19:58:39,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:39,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:39,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:39,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:39,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:39,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:58:39,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:39,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:39,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:39,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:39,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:39,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-26 19:58:39,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:39,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:39,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:39,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:39,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:39,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:58:39,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:39,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:39,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:39,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:39,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:39,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-26 19:58:39,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:39,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:39,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:39,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:39,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:39,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:39,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:39,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:39,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:39,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:39,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:39,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-26 19:58:39,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:39,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:39,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:39,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:39,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:39,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:58:39,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:39,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:39,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:39,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:39,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:39,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-10-26 19:58:39,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:39,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:39,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:39,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:39,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:39,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:39,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:39,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:39,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:39,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:39,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:39,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-26 19:58:39,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:39,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:39,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:39,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:39,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:39,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:39,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:39,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:39,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:39,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:39,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:39,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-26 19:58:39,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:39,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:39,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:39,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:39,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:39,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:58:39,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:39,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:39,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:39,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:39,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:39,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-26 19:58:39,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:39,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:39,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:39,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:39,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:39,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:58:39,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:39,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:39,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:39,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:39,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:39,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-10-26 19:58:39,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:39,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:39,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:39,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:39,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:39,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:58:39,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:39,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:39,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:39,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:39,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:40,006 INFO L134 CoverageAnalysis]: Checked inductivity of 616 backedges. 33 proven. 363 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2020-10-26 19:58:40,006 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1965738985] [2020-10-26 19:58:40,006 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:58:40,006 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-26 19:58:40,007 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518890730] [2020-10-26 19:58:40,007 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-26 19:58:40,007 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:58:40,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-26 19:58:40,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=463, Unknown=0, NotChecked=0, Total=506 [2020-10-26 19:58:40,008 INFO L87 Difference]: Start difference. First operand 315 states and 343 transitions. Second operand 23 states. [2020-10-26 19:58:45,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:58:45,541 INFO L93 Difference]: Finished difference Result 387 states and 428 transitions. [2020-10-26 19:58:45,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2020-10-26 19:58:45,543 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 146 [2020-10-26 19:58:45,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:58:45,546 INFO L225 Difference]: With dead ends: 387 [2020-10-26 19:58:45,547 INFO L226 Difference]: Without dead ends: 370 [2020-10-26 19:58:45,549 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1300 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=406, Invalid=5144, Unknown=0, NotChecked=0, Total=5550 [2020-10-26 19:58:45,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2020-10-26 19:58:45,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 320. [2020-10-26 19:58:45,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 320 states. [2020-10-26 19:58:45,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 349 transitions. [2020-10-26 19:58:45,615 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 349 transitions. Word has length 146 [2020-10-26 19:58:45,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:58:45,616 INFO L481 AbstractCegarLoop]: Abstraction has 320 states and 349 transitions. [2020-10-26 19:58:45,616 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-26 19:58:45,616 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 349 transitions. [2020-10-26 19:58:45,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-10-26 19:58:45,617 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:58:45,617 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 12, 12, 12, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:58:45,617 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-10-26 19:58:45,618 INFO L429 AbstractCegarLoop]: === Iteration 48 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:58:45,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:58:45,618 INFO L82 PathProgramCache]: Analyzing trace with hash -13507614, now seen corresponding path program 11 times [2020-10-26 19:58:45,618 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:58:45,618 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1136574928] [2020-10-26 19:58:45,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:58:45,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:45,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:45,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:47,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:47,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:47,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:47,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:47,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:47,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:47,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:47,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:49,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:49,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:50,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:50,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 191 [2020-10-26 19:58:50,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-26 19:58:50,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-26 19:58:50,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:50,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-26 19:58:50,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:58:50,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 159 [2020-10-26 19:58:50,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:51,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:58:51,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:51,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:51,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:51,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:58:51,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:51,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 19:58:51,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:51,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:58:51,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:51,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:58:51,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:51,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:58:51,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:51,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:51,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:51,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:51,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:51,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 19:58:51,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:51,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:51,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:51,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:51,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:51,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-26 19:58:51,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:51,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:51,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:51,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:51,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:51,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:51,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:51,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:51,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:51,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:51,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:51,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-26 19:58:51,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:51,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:51,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:51,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:51,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:51,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:58:51,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:51,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:51,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:51,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:51,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:51,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-26 19:58:51,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:51,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:51,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:51,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:51,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:51,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:58:51,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:51,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:51,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:51,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:51,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:51,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-26 19:58:51,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:51,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:51,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:51,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:51,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:51,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:51,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:51,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:51,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:51,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:51,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:51,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-26 19:58:51,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:51,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:51,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:51,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:51,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:51,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:51,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:51,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:51,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:51,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:51,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:51,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-26 19:58:51,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:51,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:51,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:51,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:51,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:51,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:51,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:51,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:51,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:51,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:51,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:51,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-10-26 19:58:51,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:51,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:51,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:51,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:51,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:51,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:58:51,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:51,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:51,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:51,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:51,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:51,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-26 19:58:51,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:51,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:51,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:51,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:51,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:51,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:51,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:51,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:51,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:51,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:51,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:51,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-26 19:58:51,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:51,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:51,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:51,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:51,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:51,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:58:51,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:51,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:51,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:51,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:51,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:51,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-26 19:58:51,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:51,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:51,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:51,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:51,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:51,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:51,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:51,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:51,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:51,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:51,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:51,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-10-26 19:58:51,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:51,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:51,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:51,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:51,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:51,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:51,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:51,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:51,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:51,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:51,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:51,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-10-26 19:58:51,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:51,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:51,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:51,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:51,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:51,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:58:51,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:51,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:58:51,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:58:51,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:58:51,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:51,555 INFO L134 CoverageAnalysis]: Checked inductivity of 720 backedges. 92 proven. 363 refuted. 0 times theorem prover too weak. 265 trivial. 0 not checked. [2020-10-26 19:58:51,556 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1136574928] [2020-10-26 19:58:51,556 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:58:51,556 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-26 19:58:51,556 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792449433] [2020-10-26 19:58:51,557 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-26 19:58:51,557 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:58:51,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-26 19:58:51,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=501, Unknown=0, NotChecked=0, Total=552 [2020-10-26 19:58:51,558 INFO L87 Difference]: Start difference. First operand 320 states and 349 transitions. Second operand 24 states. [2020-10-26 19:58:55,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:58:55,872 INFO L93 Difference]: Finished difference Result 382 states and 421 transitions. [2020-10-26 19:58:55,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2020-10-26 19:58:55,873 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 155 [2020-10-26 19:58:55,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:58:55,875 INFO L225 Difference]: With dead ends: 382 [2020-10-26 19:58:55,875 INFO L226 Difference]: Without dead ends: 365 [2020-10-26 19:58:55,876 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 838 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=391, Invalid=3641, Unknown=0, NotChecked=0, Total=4032 [2020-10-26 19:58:55,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2020-10-26 19:58:55,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 320. [2020-10-26 19:58:55,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 320 states. [2020-10-26 19:58:55,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 348 transitions. [2020-10-26 19:58:55,925 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 348 transitions. Word has length 155 [2020-10-26 19:58:55,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:58:55,925 INFO L481 AbstractCegarLoop]: Abstraction has 320 states and 348 transitions. [2020-10-26 19:58:55,925 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-26 19:58:55,926 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 348 transitions. [2020-10-26 19:58:55,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-10-26 19:58:55,927 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:58:55,927 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 12, 12, 12, 12, 12, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:58:55,927 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-10-26 19:58:55,927 INFO L429 AbstractCegarLoop]: === Iteration 49 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:58:55,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:58:55,928 INFO L82 PathProgramCache]: Analyzing trace with hash -1293371292, now seen corresponding path program 17 times [2020-10-26 19:58:55,928 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:58:55,928 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1573384906] [2020-10-26 19:58:55,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:58:55,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:55,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:56,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:58,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:58,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 191 [2020-10-26 19:58:58,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 19:58:58,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2310 [2020-10-26 19:58:58,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:58,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-26 19:58:58,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-26 19:58:58,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 168 [2020-10-26 19:58:58,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:59,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:58:59,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:59,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:59,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:59,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:58:59,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:59,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:58:59,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:59,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:58:59,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:59,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:58:59,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:59,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:58:59,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:59,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:59,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:59,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:59,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:59,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 19:58:59,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 19:58:59,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:59,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 19:58:59,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:59,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-26 19:58:59,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:59,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-26 19:58:59,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:59,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:59,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:59,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:59,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:59,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:58:59,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:59,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:59,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:59,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:59,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:59,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-26 19:58:59,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:59,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:59,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:59,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:59,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:59,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:58:59,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:59,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:59,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:59,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:59,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:59,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-26 19:58:59,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:59,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:59,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:59,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:59,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:59,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:58:59,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:59,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:59,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:59,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:59,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:59,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-26 19:58:59,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:59,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:59,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:59,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:59,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:59,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:59,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:59,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:59,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:59,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:59,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:59,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-26 19:58:59,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:59,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:59,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:59,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:59,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:59,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:58:59,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:59,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:59,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:59,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:59,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:59,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-26 19:58:59,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:59,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:59,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:59,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:59,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:59,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:59,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:59,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:59,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:59,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:59,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:59,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-10-26 19:58:59,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:59,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:59,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:59,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:59,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:59,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:59,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:59,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:59,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:59,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:59,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:59,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-26 19:58:59,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:59,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:59,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:59,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:59,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:59,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:59,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:59,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:59,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:59,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:59,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:59,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-26 19:58:59,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:59,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:59,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:59,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:59,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:59,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:59,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:59,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:59,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:59,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:59,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:59,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-26 19:58:59,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:59,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:59,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:59,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:59,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:59,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:59,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:59,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:59,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:59,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:59,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:59,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-10-26 19:58:59,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:59,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:59,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:59,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:59,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:59,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:59,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:59,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:59,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:59,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:59,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:59,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-10-26 19:58:59,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:59,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:59,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:59,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:59,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:59,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:58:59,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:59,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:59,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:59,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:59,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:59,262 INFO L134 CoverageAnalysis]: Checked inductivity of 720 backedges. 390 proven. 66 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2020-10-26 19:58:59,262 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1573384906] [2020-10-26 19:58:59,262 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:58:59,262 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-26 19:58:59,262 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782642489] [2020-10-26 19:58:59,263 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-26 19:58:59,263 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:58:59,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-26 19:58:59,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=552, Unknown=0, NotChecked=0, Total=702 [2020-10-26 19:58:59,263 INFO L87 Difference]: Start difference. First operand 320 states and 348 transitions. Second operand 27 states. [2020-10-26 19:59:02,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:59:02,661 INFO L93 Difference]: Finished difference Result 585 states and 639 transitions. [2020-10-26 19:59:02,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-26 19:59:02,662 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 155 [2020-10-26 19:59:02,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:59:02,665 INFO L225 Difference]: With dead ends: 585 [2020-10-26 19:59:02,666 INFO L226 Difference]: Without dead ends: 341 [2020-10-26 19:59:02,667 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 636 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=493, Invalid=2263, Unknown=0, NotChecked=0, Total=2756 [2020-10-26 19:59:02,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2020-10-26 19:59:02,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 332. [2020-10-26 19:59:02,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 332 states. [2020-10-26 19:59:02,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 360 transitions. [2020-10-26 19:59:02,742 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 360 transitions. Word has length 155 [2020-10-26 19:59:02,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:59:02,743 INFO L481 AbstractCegarLoop]: Abstraction has 332 states and 360 transitions. [2020-10-26 19:59:02,743 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-26 19:59:02,743 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 360 transitions. [2020-10-26 19:59:02,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-10-26 19:59:02,745 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:59:02,745 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 12, 12, 12, 12, 12, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:59:02,746 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-10-26 19:59:02,746 INFO L429 AbstractCegarLoop]: === Iteration 50 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:59:02,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:59:02,746 INFO L82 PathProgramCache]: Analyzing trace with hash 963348509, now seen corresponding path program 18 times [2020-10-26 19:59:02,746 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:59:02,747 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1533236476] [2020-10-26 19:59:02,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:59:02,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:02,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:04,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:04,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 195 [2020-10-26 19:59:04,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:04,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1265 [2020-10-26 19:59:04,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:04,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-26 19:59:04,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-26 19:59:04,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 170 [2020-10-26 19:59:04,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:04,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:59:04,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:04,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:04,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:04,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:59:04,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:04,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:59:04,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:04,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:59:04,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:04,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:59:04,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:04,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:59:04,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:04,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:04,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:04,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:04,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:04,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:59:04,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:04,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:59:04,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:04,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:59:04,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:04,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-26 19:59:04,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:04,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:04,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:04,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:04,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:04,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:59:04,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:04,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:59:04,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:04,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:04,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:04,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-26 19:59:04,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:04,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:04,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:04,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:04,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:04,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:59:04,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:04,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:59:04,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:04,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:04,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:04,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-26 19:59:04,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:04,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:04,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:04,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:04,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:04,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:59:04,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:04,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:59:04,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:04,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:04,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:04,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-26 19:59:04,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:04,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:04,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:04,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:04,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:04,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:59:04,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:04,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:59:04,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:04,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:04,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:04,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-26 19:59:04,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:04,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:04,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:04,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:04,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:04,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:59:04,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:04,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:59:04,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:04,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:04,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:04,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-26 19:59:04,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:04,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:04,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:04,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:04,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:04,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:59:04,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:04,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:59:04,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:04,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:04,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:04,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-26 19:59:04,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:04,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:04,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:04,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:04,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:04,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:59:04,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:04,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:59:04,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:04,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:04,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:04,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-26 19:59:04,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:04,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:04,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:04,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:04,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:04,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:59:04,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:04,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:59:04,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:04,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:04,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:04,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 19:59:04,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:04,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:04,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:04,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:04,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:04,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:59:04,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:04,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:59:04,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:04,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:04,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:04,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-26 19:59:04,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:04,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:04,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:04,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:04,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:04,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:59:04,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:04,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:59:04,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:04,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:04,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:04,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-10-26 19:59:05,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:05,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:05,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:05,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:05,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:05,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:59:05,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:05,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:59:05,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:05,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:05,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:05,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-10-26 19:59:05,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:05,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:05,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:05,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:05,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:05,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:59:05,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:05,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:59:05,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:05,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:05,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:05,070 INFO L134 CoverageAnalysis]: Checked inductivity of 745 backedges. 24 proven. 457 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2020-10-26 19:59:05,071 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1533236476] [2020-10-26 19:59:05,071 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:59:05,071 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-26 19:59:05,071 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550054318] [2020-10-26 19:59:05,072 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-26 19:59:05,072 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:59:05,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-26 19:59:05,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=699, Unknown=0, NotChecked=0, Total=756 [2020-10-26 19:59:05,073 INFO L87 Difference]: Start difference. First operand 332 states and 360 transitions. Second operand 28 states. [2020-10-26 19:59:11,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:59:11,979 INFO L93 Difference]: Finished difference Result 402 states and 443 transitions. [2020-10-26 19:59:11,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2020-10-26 19:59:11,980 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 159 [2020-10-26 19:59:11,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:59:11,984 INFO L225 Difference]: With dead ends: 402 [2020-10-26 19:59:11,984 INFO L226 Difference]: Without dead ends: 399 [2020-10-26 19:59:11,985 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1347 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=441, Invalid=5565, Unknown=0, NotChecked=0, Total=6006 [2020-10-26 19:59:11,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2020-10-26 19:59:12,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 346. [2020-10-26 19:59:12,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 346 states. [2020-10-26 19:59:12,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 376 transitions. [2020-10-26 19:59:12,065 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 376 transitions. Word has length 159 [2020-10-26 19:59:12,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:59:12,066 INFO L481 AbstractCegarLoop]: Abstraction has 346 states and 376 transitions. [2020-10-26 19:59:12,066 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-26 19:59:12,066 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 376 transitions. [2020-10-26 19:59:12,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-10-26 19:59:12,068 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:59:12,068 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 12, 12, 12, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:59:12,069 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2020-10-26 19:59:12,069 INFO L429 AbstractCegarLoop]: === Iteration 51 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:59:12,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:59:12,069 INFO L82 PathProgramCache]: Analyzing trace with hash -453625635, now seen corresponding path program 12 times [2020-10-26 19:59:12,070 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:59:12,070 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1985257568] [2020-10-26 19:59:12,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:59:12,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:12,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:13,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:13,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 195 [2020-10-26 19:59:13,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:13,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1288 [2020-10-26 19:59:13,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:13,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-26 19:59:13,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-26 19:59:13,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 165 [2020-10-26 19:59:13,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:14,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:59:14,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:14,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:14,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:14,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:59:14,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:14,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 19:59:14,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:14,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:59:14,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:14,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:59:14,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:14,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:59:14,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:14,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:14,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:14,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:14,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:14,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:59:14,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:14,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:59:14,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:14,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:59:14,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:14,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-26 19:59:14,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:14,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:14,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:14,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:14,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:14,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:59:14,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:14,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:59:14,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:14,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:14,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:14,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-26 19:59:14,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:14,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:14,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:14,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:14,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:14,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:59:14,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:14,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:59:14,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:14,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:14,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:14,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-26 19:59:14,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:14,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:14,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:14,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:14,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:14,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:59:14,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:14,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:59:14,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:14,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:14,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:14,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-26 19:59:14,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:14,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:14,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:14,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:14,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:14,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:59:14,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:14,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:59:14,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:14,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:14,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:14,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-26 19:59:14,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:14,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:14,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:14,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:14,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:14,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:59:14,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:14,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:59:14,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:14,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:14,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:14,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-26 19:59:14,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:14,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:14,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:14,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:14,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:14,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:59:14,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:14,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:59:14,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:14,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:14,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:14,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-26 19:59:14,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:14,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:14,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:14,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:14,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:14,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:59:14,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:14,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:59:14,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:14,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:14,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:14,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-26 19:59:14,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:14,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:14,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:14,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:14,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:14,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:59:14,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:14,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:59:14,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:14,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:14,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:14,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 19:59:14,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:14,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:14,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:14,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:14,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:14,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:59:14,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:14,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:59:14,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:14,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:14,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:14,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-26 19:59:14,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:14,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:14,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:14,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:14,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:14,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:59:14,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:14,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:59:14,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:14,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:14,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:14,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-10-26 19:59:14,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:14,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:14,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:14,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:14,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:14,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:59:14,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:14,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:59:14,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:14,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:14,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:14,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-10-26 19:59:14,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:14,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:14,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:14,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:14,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:14,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:59:14,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:14,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:59:14,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:14,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:14,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:14,470 INFO L134 CoverageAnalysis]: Checked inductivity of 745 backedges. 36 proven. 445 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2020-10-26 19:59:14,470 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1985257568] [2020-10-26 19:59:14,470 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:59:14,470 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-26 19:59:14,470 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833513976] [2020-10-26 19:59:14,471 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-26 19:59:14,471 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:59:14,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-26 19:59:14,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=597, Unknown=0, NotChecked=0, Total=650 [2020-10-26 19:59:14,472 INFO L87 Difference]: Start difference. First operand 346 states and 376 transitions. Second operand 26 states. [2020-10-26 19:59:22,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:59:22,402 INFO L93 Difference]: Finished difference Result 423 states and 467 transitions. [2020-10-26 19:59:22,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2020-10-26 19:59:22,405 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 159 [2020-10-26 19:59:22,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:59:22,409 INFO L225 Difference]: With dead ends: 423 [2020-10-26 19:59:22,409 INFO L226 Difference]: Without dead ends: 406 [2020-10-26 19:59:22,411 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1762 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=513, Invalid=6459, Unknown=0, NotChecked=0, Total=6972 [2020-10-26 19:59:22,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2020-10-26 19:59:22,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 351. [2020-10-26 19:59:22,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 351 states. [2020-10-26 19:59:22,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 382 transitions. [2020-10-26 19:59:22,485 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 382 transitions. Word has length 159 [2020-10-26 19:59:22,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:59:22,486 INFO L481 AbstractCegarLoop]: Abstraction has 351 states and 382 transitions. [2020-10-26 19:59:22,486 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-26 19:59:22,486 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 382 transitions. [2020-10-26 19:59:22,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-10-26 19:59:22,489 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:59:22,489 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 13, 13, 13, 13, 13, 13, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:59:22,489 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2020-10-26 19:59:22,489 INFO L429 AbstractCegarLoop]: === Iteration 52 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:59:22,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:59:22,490 INFO L82 PathProgramCache]: Analyzing trace with hash 553512813, now seen corresponding path program 12 times [2020-10-26 19:59:22,490 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:59:22,490 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [420570673] [2020-10-26 19:59:22,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:59:22,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:22,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:23,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:23,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:23,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:23,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:23,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:24,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:24,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:27,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:27,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 206 [2020-10-26 19:59:27,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-26 19:59:27,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-26 19:59:27,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:27,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-26 19:59:27,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:59:27,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 174 [2020-10-26 19:59:27,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:28,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:59:28,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:28,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:28,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:28,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:59:28,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:28,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:59:28,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:28,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:59:28,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:28,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:59:28,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:28,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 19:59:28,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:28,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:28,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:28,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:28,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:28,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:59:28,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:28,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:59:28,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:28,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:28,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:28,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-26 19:59:28,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:28,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:28,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:28,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:28,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:28,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:59:28,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:28,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:59:28,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:28,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:28,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:28,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-26 19:59:28,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:28,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:28,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:28,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:28,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:28,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:59:28,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:28,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:59:28,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:28,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:28,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:28,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-26 19:59:28,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:28,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:28,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:28,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:28,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:28,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:59:28,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:28,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:59:28,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:28,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:28,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:28,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-26 19:59:28,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:28,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:28,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:28,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:28,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:28,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:59:28,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:28,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:59:28,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:28,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:28,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:28,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-26 19:59:28,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:28,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:28,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:28,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:28,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:28,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:59:28,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:28,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:59:28,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:28,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:28,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:28,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-26 19:59:28,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:28,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:28,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:28,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:28,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:28,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:59:28,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:28,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:59:28,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:28,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:28,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:28,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-26 19:59:28,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:28,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:28,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:28,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:28,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:28,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:59:28,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:28,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:59:28,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:28,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:28,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:28,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-26 19:59:28,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:28,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:28,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:28,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:28,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:28,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:59:28,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:28,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:59:28,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:28,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:28,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:28,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 19:59:28,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:28,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:28,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:28,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:28,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:28,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:59:28,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:28,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:59:28,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:28,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:28,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:28,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-26 19:59:28,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:28,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:28,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:28,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:28,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:28,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:59:28,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:28,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:59:28,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:28,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:28,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:28,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-10-26 19:59:28,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:28,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:28,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:28,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:28,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:28,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:59:28,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:28,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:59:28,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:28,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:28,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:28,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-10-26 19:59:28,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:28,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:28,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:28,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:28,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:28,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:59:28,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:28,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:59:28,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:28,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:28,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:28,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-10-26 19:59:28,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:28,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:28,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:28,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:28,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:28,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:59:28,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:28,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:59:28,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:59:28,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:59:28,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:28,940 INFO L134 CoverageAnalysis]: Checked inductivity of 858 backedges. 100 proven. 445 refuted. 0 times theorem prover too weak. 313 trivial. 0 not checked. [2020-10-26 19:59:28,940 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [420570673] [2020-10-26 19:59:28,941 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:59:28,941 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-26 19:59:28,941 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575662490] [2020-10-26 19:59:28,941 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-26 19:59:28,941 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:59:28,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-26 19:59:28,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=642, Unknown=0, NotChecked=0, Total=702 [2020-10-26 19:59:28,942 INFO L87 Difference]: Start difference. First operand 351 states and 382 transitions. Second operand 27 states. [2020-10-26 19:59:34,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:59:34,770 INFO L93 Difference]: Finished difference Result 415 states and 456 transitions. [2020-10-26 19:59:34,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-10-26 19:59:34,771 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 168 [2020-10-26 19:59:34,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted.