/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --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/seq-mthreaded-reduced/pals_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 19:15:32,364 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 19:15:32,368 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 19:15:32,424 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 19:15:32,424 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 19:15:32,431 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 19:15:32,434 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 19:15:32,438 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 19:15:32,441 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 19:15:32,447 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 19:15:32,448 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 19:15:32,449 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 19:15:32,450 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 19:15:32,453 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 19:15:32,455 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 19:15:32,457 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 19:15:32,458 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 19:15:32,461 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 19:15:32,469 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 19:15:32,476 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 19:15:32,478 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 19:15:32,480 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 19:15:32,481 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 19:15:32,483 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 19:15:32,492 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 19:15:32,493 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 19:15:32,493 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 19:15:32,495 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 19:15:32,496 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 19:15:32,497 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 19:15:32,497 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 19:15:32,498 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 19:15:32,501 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 19:15:32,501 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 19:15:32,503 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 19:15:32,512 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 19:15:32,513 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 19:15:32,513 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 19:15:32,514 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 19:15:32,515 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 19:15:32,515 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 19:15:32,523 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 [2020-10-28 19:15:32,568 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 19:15:32,569 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 19:15:32,573 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 19:15:32,573 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 19:15:32,573 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 19:15:32,574 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 19:15:32,574 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 19:15:32,574 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 19:15:32,574 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 19:15:32,575 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 19:15:32,576 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 19:15:32,576 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 19:15:32,576 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 19:15:32,577 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 19:15:32,577 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 19:15:32,577 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 19:15:32,577 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 19:15:32,578 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 19:15:32,578 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 19:15:32,578 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 19:15:32,578 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 19:15:32,578 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 19:15:32,579 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 19:15:32,579 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 19:15:32,579 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 19:15:32,579 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 19:15:32,580 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 19:15:32,580 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 19:15:32,580 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 19:15:32,580 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 19:15:33,045 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 19:15:33,076 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 19:15:33,079 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 19:15:33,080 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 19:15:33,081 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 19:15:33,082 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-28 19:15:33,159 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2681ebf3e/873884d7a9194a97b4aa59686c982f8d/FLAGd768224c5 [2020-10-28 19:15:33,899 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 19:15:33,900 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-28 19:15:33,923 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2681ebf3e/873884d7a9194a97b4aa59686c982f8d/FLAGd768224c5 [2020-10-28 19:15:34,132 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2681ebf3e/873884d7a9194a97b4aa59686c982f8d [2020-10-28 19:15:34,137 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 19:15:34,147 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 19:15:34,152 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 19:15:34,153 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 19:15:34,158 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 19:15:34,159 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 07:15:34" (1/1) ... [2020-10-28 19:15:34,172 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47d14da5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:15:34, skipping insertion in model container [2020-10-28 19:15:34,172 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 07:15:34" (1/1) ... [2020-10-28 19:15:34,184 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 19:15:34,291 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 19:15:34,881 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 19:15:34,903 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 19:15:35,165 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 19:15:35,213 INFO L208 MainTranslator]: Completed translation [2020-10-28 19:15:35,214 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:15:35 WrapperNode [2020-10-28 19:15:35,214 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 19:15:35,215 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 19:15:35,216 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 19:15:35,216 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 19:15:35,229 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:15:35" (1/1) ... [2020-10-28 19:15:35,230 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:15:35" (1/1) ... [2020-10-28 19:15:35,252 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:15:35" (1/1) ... [2020-10-28 19:15:35,252 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:15:35" (1/1) ... [2020-10-28 19:15:35,291 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:15:35" (1/1) ... [2020-10-28 19:15:35,330 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:15:35" (1/1) ... [2020-10-28 19:15:35,347 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:15:35" (1/1) ... [2020-10-28 19:15:35,367 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 19:15:35,374 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 19:15:35,375 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 19:15:35,375 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 19:15:35,378 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:15:35" (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 [2020-10-28 19:15:35,466 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 19:15:35,467 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 19:15:35,467 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 19:15:35,467 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-28 19:15:35,467 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 19:15:35,468 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 19:15:35,468 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 19:15:35,468 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 19:15:35,468 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 19:15:35,468 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-28 19:15:35,469 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-28 19:15:35,469 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-28 19:15:35,469 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-28 19:15:35,469 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-28 19:15:35,469 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-28 19:15:35,469 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-28 19:15:35,470 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-28 19:15:35,470 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-28 19:15:35,470 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-28 19:15:35,470 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-28 19:15:35,470 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-28 19:15:35,471 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 19:15:35,471 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 19:15:35,471 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 19:15:35,471 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 19:15:35,471 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 19:15:35,472 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 19:15:35,472 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 19:15:37,599 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 19:15:37,600 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-28 19:15:37,602 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 07:15:37 BoogieIcfgContainer [2020-10-28 19:15:37,603 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 19:15:37,605 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 19:15:37,605 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 19:15:37,609 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 19:15:37,609 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 07:15:34" (1/3) ... [2020-10-28 19:15:37,610 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51f32fc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 07:15:37, skipping insertion in model container [2020-10-28 19:15:37,610 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:15:35" (2/3) ... [2020-10-28 19:15:37,611 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51f32fc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 07:15:37, skipping insertion in model container [2020-10-28 19:15:37,611 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 07:15:37" (3/3) ... [2020-10-28 19:15:37,612 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-28 19:15:37,625 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 19:15:37,631 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 19:15:37,645 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 19:15:37,691 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 19:15:37,691 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 19:15:37,691 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 19:15:37,691 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 19:15:37,691 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 19:15:37,692 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 19:15:37,692 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 19:15:37,692 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 19:15:37,741 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states. [2020-10-28 19:15:37,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-28 19:15:37,759 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:15:37,760 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 19:15:37,761 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:15:37,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:15:37,768 INFO L82 PathProgramCache]: Analyzing trace with hash 50608680, now seen corresponding path program 1 times [2020-10-28 19:15:37,778 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:15:37,779 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1389045715] [2020-10-28 19:15:37,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:15:38,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:15:38,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:15:38,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:15:39,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:15:39,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:15:39,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:15:39,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:15:39,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:15:39,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:15:40,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:15:41,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:15:41,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:15:41,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:15:43,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:15:43,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:15:43,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-28 19:15:43,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-28 19:15:43,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5040 [2020-10-28 19:15:43,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:15:43,310 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:15:43,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:15:43,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-28 19:15:43,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-28 19:15:43,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-28 19:15:44,252 WARN L193 SmtUtils]: Spent 747.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-10-28 19:15:44,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:15:44,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:15:44,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:15:44,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:15:44,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:15:44,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:15:44,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 19:15:44,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:15:44,287 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:15:44,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:15:44,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:15:44,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:15:44,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 19:15:44,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:15:44,353 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1389045715] [2020-10-28 19:15:44,355 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:15:44,356 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 19:15:44,357 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243931678] [2020-10-28 19:15:44,363 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 19:15:44,363 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:15:44,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 19:15:44,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 19:15:44,381 INFO L87 Difference]: Start difference. First operand 420 states. Second operand 4 states. [2020-10-28 19:15:45,200 WARN L193 SmtUtils]: Spent 724.00 ms on a formula simplification that was a NOOP. DAG size: 227 [2020-10-28 19:15:48,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:15:48,742 INFO L93 Difference]: Finished difference Result 765 states and 1345 transitions. [2020-10-28 19:15:48,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 19:15:48,745 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 152 [2020-10-28 19:15:48,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:15:48,792 INFO L225 Difference]: With dead ends: 765 [2020-10-28 19:15:48,793 INFO L226 Difference]: Without dead ends: 598 [2020-10-28 19:15:48,804 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:15:48,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2020-10-28 19:15:48,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 595. [2020-10-28 19:15:48,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 595 states. [2020-10-28 19:15:48,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 595 states to 595 states and 873 transitions. [2020-10-28 19:15:48,925 INFO L78 Accepts]: Start accepts. Automaton has 595 states and 873 transitions. Word has length 152 [2020-10-28 19:15:48,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:15:48,929 INFO L481 AbstractCegarLoop]: Abstraction has 595 states and 873 transitions. [2020-10-28 19:15:48,929 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 19:15:48,929 INFO L276 IsEmpty]: Start isEmpty. Operand 595 states and 873 transitions. [2020-10-28 19:15:48,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-28 19:15:48,944 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:15:48,945 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 19:15:48,946 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 19:15:48,946 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:15:48,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:15:48,948 INFO L82 PathProgramCache]: Analyzing trace with hash -1619882475, now seen corresponding path program 1 times [2020-10-28 19:15:48,948 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:15:48,948 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1489927193] [2020-10-28 19:15:48,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:15:49,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:15:49,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:15:49,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:15:49,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:15:49,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:15:49,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:15:49,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:15:49,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:15:49,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:15:50,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:15:50,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:15:51,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:15:51,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:15:52,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:15:54,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:15:54,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-28 19:15:54,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-28 19:15:54,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-28 19:15:54,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:15:54,074 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:15:54,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:15:54,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-28 19:15:54,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-28 19:15:54,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 19:15:54,662 WARN L193 SmtUtils]: Spent 454.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-10-28 19:15:54,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:15:54,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:15:54,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:15:54,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:15:54,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:15:54,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:15:54,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 19:15:54,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:15:54,693 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:15:54,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:15:54,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:15:54,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:15:54,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 19:15:54,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:15:54,752 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1489927193] [2020-10-28 19:15:54,752 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:15:54,752 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 19:15:54,752 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591720899] [2020-10-28 19:15:54,754 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 19:15:54,754 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:15:54,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 19:15:54,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 19:15:54,756 INFO L87 Difference]: Start difference. First operand 595 states and 873 transitions. Second operand 4 states. [2020-10-28 19:15:55,249 WARN L193 SmtUtils]: Spent 445.00 ms on a formula simplification that was a NOOP. DAG size: 227 [2020-10-28 19:15:57,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:15:57,839 INFO L93 Difference]: Finished difference Result 1213 states and 1835 transitions. [2020-10-28 19:15:57,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 19:15:57,841 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 152 [2020-10-28 19:15:57,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:15:57,855 INFO L225 Difference]: With dead ends: 1213 [2020-10-28 19:15:57,856 INFO L226 Difference]: Without dead ends: 990 [2020-10-28 19:15:57,863 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:15:57,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 990 states. [2020-10-28 19:15:57,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 990 to 987. [2020-10-28 19:15:57,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 987 states. [2020-10-28 19:15:57,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 987 states to 987 states and 1470 transitions. [2020-10-28 19:15:57,938 INFO L78 Accepts]: Start accepts. Automaton has 987 states and 1470 transitions. Word has length 152 [2020-10-28 19:15:57,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:15:57,939 INFO L481 AbstractCegarLoop]: Abstraction has 987 states and 1470 transitions. [2020-10-28 19:15:57,939 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 19:15:57,939 INFO L276 IsEmpty]: Start isEmpty. Operand 987 states and 1470 transitions. [2020-10-28 19:15:57,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-28 19:15:57,943 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:15:57,943 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 19:15:57,944 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 19:15:57,944 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:15:57,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:15:57,945 INFO L82 PathProgramCache]: Analyzing trace with hash -1630379540, now seen corresponding path program 1 times [2020-10-28 19:15:57,945 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:15:57,945 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1241620264] [2020-10-28 19:15:57,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:15:58,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:15:58,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:15:58,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:15:58,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:15:58,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:15:58,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:15:58,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:15:58,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:15:59,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:15:59,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:00,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:00,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:00,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:02,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:02,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:03,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:03,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:16:03,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-28 19:16:03,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-28 19:16:03,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5071 [2020-10-28 19:16:03,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:16:03,094 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:16:03,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 19:16:03,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 19:16:03,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-28 19:16:03,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 27 [2020-10-28 19:16:03,772 WARN L193 SmtUtils]: Spent 434.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-10-28 19:16:03,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:16:03,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:16:03,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:03,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:16:03,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:16:03,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:16:03,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 19:16:03,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:16:03,799 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:16:03,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:16:03,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:16:03,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:16:03,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:16:03,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:16:03,879 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1241620264] [2020-10-28 19:16:03,879 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:16:03,879 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 19:16:03,881 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617801825] [2020-10-28 19:16:03,883 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 19:16:03,886 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:16:03,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 19:16:03,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:16:03,889 INFO L87 Difference]: Start difference. First operand 987 states and 1470 transitions. Second operand 5 states. [2020-10-28 19:16:06,716 WARN L193 SmtUtils]: Spent 432.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-10-28 19:16:08,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:16:08,212 INFO L93 Difference]: Finished difference Result 2865 states and 4252 transitions. [2020-10-28 19:16:08,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 19:16:08,213 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 152 [2020-10-28 19:16:08,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:16:08,223 INFO L225 Difference]: With dead ends: 2865 [2020-10-28 19:16:08,229 INFO L226 Difference]: Without dead ends: 1903 [2020-10-28 19:16:08,232 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 19:16:08,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1903 states. [2020-10-28 19:16:08,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1903 to 1858. [2020-10-28 19:16:08,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1858 states. [2020-10-28 19:16:08,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1858 states to 1858 states and 2744 transitions. [2020-10-28 19:16:08,342 INFO L78 Accepts]: Start accepts. Automaton has 1858 states and 2744 transitions. Word has length 152 [2020-10-28 19:16:08,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:16:08,343 INFO L481 AbstractCegarLoop]: Abstraction has 1858 states and 2744 transitions. [2020-10-28 19:16:08,343 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 19:16:08,343 INFO L276 IsEmpty]: Start isEmpty. Operand 1858 states and 2744 transitions. [2020-10-28 19:16:08,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-10-28 19:16:08,347 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:16:08,347 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 19:16:08,347 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 19:16:08,347 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:16:08,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:16:08,348 INFO L82 PathProgramCache]: Analyzing trace with hash -1632068148, now seen corresponding path program 1 times [2020-10-28 19:16:08,348 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:16:08,348 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1933547997] [2020-10-28 19:16:08,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:16:08,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:16:08,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:08,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:08,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:08,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:08,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:08,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:08,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:09,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:09,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:10,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:10,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:10,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:12,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:12,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:13,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:16:13,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-10-28 19:16:13,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-28 19:16:13,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-28 19:16:13,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:16:13,407 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:16:13,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 19:16:13,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 19:16:13,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-28 19:16:13,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:16:14,038 WARN L193 SmtUtils]: Spent 501.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-10-28 19:16:14,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:16:14,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:16:14,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:14,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:16:14,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:16:14,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:16:14,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 19:16:14,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:16:14,065 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:16:14,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:16:14,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:16:14,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:16:14,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:16:14,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:16:14,154 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1933547997] [2020-10-28 19:16:14,154 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:16:14,154 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 19:16:14,155 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530782214] [2020-10-28 19:16:14,156 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 19:16:14,157 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:16:14,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 19:16:14,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:16:14,159 INFO L87 Difference]: Start difference. First operand 1858 states and 2744 transitions. Second operand 5 states. [2020-10-28 19:16:16,887 WARN L193 SmtUtils]: Spent 443.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-10-28 19:16:18,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:16:18,511 INFO L93 Difference]: Finished difference Result 5400 states and 7945 transitions. [2020-10-28 19:16:18,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 19:16:18,512 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 153 [2020-10-28 19:16:18,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:16:18,530 INFO L225 Difference]: With dead ends: 5400 [2020-10-28 19:16:18,531 INFO L226 Difference]: Without dead ends: 3579 [2020-10-28 19:16:18,536 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 19:16:18,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3579 states. [2020-10-28 19:16:18,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3579 to 3534. [2020-10-28 19:16:18,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3534 states. [2020-10-28 19:16:18,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3534 states to 3534 states and 5169 transitions. [2020-10-28 19:16:18,711 INFO L78 Accepts]: Start accepts. Automaton has 3534 states and 5169 transitions. Word has length 153 [2020-10-28 19:16:18,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:16:18,711 INFO L481 AbstractCegarLoop]: Abstraction has 3534 states and 5169 transitions. [2020-10-28 19:16:18,711 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 19:16:18,711 INFO L276 IsEmpty]: Start isEmpty. Operand 3534 states and 5169 transitions. [2020-10-28 19:16:18,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-10-28 19:16:18,717 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:16:18,718 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 19:16:18,718 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 19:16:18,718 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:16:18,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:16:18,719 INFO L82 PathProgramCache]: Analyzing trace with hash -1858197363, now seen corresponding path program 1 times [2020-10-28 19:16:18,719 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:16:18,719 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [886255525] [2020-10-28 19:16:18,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:16:18,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:16:18,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:18,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:18,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:19,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:19,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:19,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:19,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:19,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:20,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:20,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:21,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:23,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:16:23,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-28 19:16:23,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-28 19:16:23,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-28 19:16:23,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:16:23,786 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:16:23,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 19:16:23,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 19:16:23,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-28 19:16:23,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:16:24,436 WARN L193 SmtUtils]: Spent 419.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-10-28 19:16:24,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:16:24,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:16:24,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:24,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:16:24,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:16:24,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:16:24,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 19:16:24,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:16:24,461 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:16:24,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:16:24,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:16:24,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:16:24,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:16:24,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:16:24,546 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [886255525] [2020-10-28 19:16:24,546 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:16:24,546 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 19:16:24,546 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837288054] [2020-10-28 19:16:24,547 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 19:16:24,547 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:16:24,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 19:16:24,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:16:24,548 INFO L87 Difference]: Start difference. First operand 3534 states and 5169 transitions. Second operand 5 states. [2020-10-28 19:16:27,700 WARN L193 SmtUtils]: Spent 489.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-10-28 19:16:29,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:16:29,493 INFO L93 Difference]: Finished difference Result 10026 states and 14649 transitions. [2020-10-28 19:16:29,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 19:16:29,494 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 154 [2020-10-28 19:16:29,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:16:29,526 INFO L225 Difference]: With dead ends: 10026 [2020-10-28 19:16:29,527 INFO L226 Difference]: Without dead ends: 6799 [2020-10-28 19:16:29,536 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 19:16:29,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6799 states. [2020-10-28 19:16:29,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6799 to 6772. [2020-10-28 19:16:29,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6772 states. [2020-10-28 19:16:29,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6772 states to 6772 states and 9765 transitions. [2020-10-28 19:16:29,922 INFO L78 Accepts]: Start accepts. Automaton has 6772 states and 9765 transitions. Word has length 154 [2020-10-28 19:16:29,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:16:29,923 INFO L481 AbstractCegarLoop]: Abstraction has 6772 states and 9765 transitions. [2020-10-28 19:16:29,923 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 19:16:29,923 INFO L276 IsEmpty]: Start isEmpty. Operand 6772 states and 9765 transitions. [2020-10-28 19:16:29,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-10-28 19:16:29,934 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:16:29,934 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 19:16:29,935 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 19:16:29,935 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:16:29,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:16:29,936 INFO L82 PathProgramCache]: Analyzing trace with hash -1014748245, now seen corresponding path program 1 times [2020-10-28 19:16:29,936 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:16:29,936 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1474403089] [2020-10-28 19:16:29,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:16:29,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:16:29,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:30,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:30,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:30,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:30,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:30,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:30,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:30,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:30,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:34,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:16:34,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-28 19:16:34,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-28 19:16:34,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-28 19:16:34,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:16:34,973 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:16:34,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 19:16:34,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 19:16:34,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-28 19:16:34,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:16:35,527 WARN L193 SmtUtils]: Spent 407.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-10-28 19:16:35,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:16:35,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:16:35,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:35,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:16:35,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:16:35,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:16:35,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 19:16:35,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:16:35,548 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:16:35,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:16:35,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:16:35,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:16:35,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:16:35,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:16:35,620 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1474403089] [2020-10-28 19:16:35,620 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:16:35,620 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 19:16:35,620 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906543989] [2020-10-28 19:16:35,621 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 19:16:35,621 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:16:35,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 19:16:35,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:16:35,622 INFO L87 Difference]: Start difference. First operand 6772 states and 9765 transitions. Second operand 5 states. [2020-10-28 19:16:38,599 WARN L193 SmtUtils]: Spent 505.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-10-28 19:16:40,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:16:40,467 INFO L93 Difference]: Finished difference Result 18518 states and 26576 transitions. [2020-10-28 19:16:40,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 19:16:40,468 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 155 [2020-10-28 19:16:40,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:16:40,524 INFO L225 Difference]: With dead ends: 18518 [2020-10-28 19:16:40,524 INFO L226 Difference]: Without dead ends: 11801 [2020-10-28 19:16:40,542 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 19:16:40,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11801 states. [2020-10-28 19:16:41,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11801 to 11769. [2020-10-28 19:16:41,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11769 states. [2020-10-28 19:16:41,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11769 states to 11769 states and 16722 transitions. [2020-10-28 19:16:41,368 INFO L78 Accepts]: Start accepts. Automaton has 11769 states and 16722 transitions. Word has length 155 [2020-10-28 19:16:41,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:16:41,369 INFO L481 AbstractCegarLoop]: Abstraction has 11769 states and 16722 transitions. [2020-10-28 19:16:41,369 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 19:16:41,369 INFO L276 IsEmpty]: Start isEmpty. Operand 11769 states and 16722 transitions. [2020-10-28 19:16:41,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-10-28 19:16:41,388 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:16:41,389 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 19:16:41,389 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 19:16:41,389 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:16:41,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:16:41,390 INFO L82 PathProgramCache]: Analyzing trace with hash 13951951, now seen corresponding path program 1 times [2020-10-28 19:16:41,390 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:16:41,390 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1766827883] [2020-10-28 19:16:41,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:16:41,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:16:41,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:41,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:41,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:41,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:41,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:41,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:41,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:44,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:46,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:16:46,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-28 19:16:46,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 19:16:46,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-28 19:16:46,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:16:46,436 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:16:46,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 19:16:46,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 19:16:46,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-28 19:16:46,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:16:46,965 WARN L193 SmtUtils]: Spent 402.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-10-28 19:16:46,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:16:46,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:16:46,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:46,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:16:46,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:16:46,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:16:46,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 19:16:46,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:16:46,990 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:16:46,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:16:46,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:16:46,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:16:46,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:16:47,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:16:47,052 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1766827883] [2020-10-28 19:16:47,052 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:16:47,052 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 19:16:47,053 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973645864] [2020-10-28 19:16:47,053 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 19:16:47,053 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:16:47,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 19:16:47,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:16:47,054 INFO L87 Difference]: Start difference. First operand 11769 states and 16722 transitions. Second operand 5 states. [2020-10-28 19:16:50,402 WARN L193 SmtUtils]: Spent 448.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-10-28 19:16:52,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:16:52,633 INFO L93 Difference]: Finished difference Result 33711 states and 47824 transitions. [2020-10-28 19:16:52,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 19:16:52,634 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 156 [2020-10-28 19:16:52,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:16:52,685 INFO L225 Difference]: With dead ends: 33711 [2020-10-28 19:16:52,685 INFO L226 Difference]: Without dead ends: 22710 [2020-10-28 19:16:52,709 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 19:16:52,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22710 states. [2020-10-28 19:16:54,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22710 to 22631. [2020-10-28 19:16:54,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22631 states. [2020-10-28 19:16:54,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22631 states to 22631 states and 31718 transitions. [2020-10-28 19:16:54,154 INFO L78 Accepts]: Start accepts. Automaton has 22631 states and 31718 transitions. Word has length 156 [2020-10-28 19:16:54,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:16:54,154 INFO L481 AbstractCegarLoop]: Abstraction has 22631 states and 31718 transitions. [2020-10-28 19:16:54,154 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 19:16:54,154 INFO L276 IsEmpty]: Start isEmpty. Operand 22631 states and 31718 transitions. [2020-10-28 19:16:54,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-10-28 19:16:54,189 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:16:54,189 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 19:16:54,190 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 19:16:54,190 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:16:54,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:16:54,190 INFO L82 PathProgramCache]: Analyzing trace with hash 1985857162, now seen corresponding path program 1 times [2020-10-28 19:16:54,191 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:16:54,191 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [795827042] [2020-10-28 19:16:54,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:16:54,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:16:54,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:54,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:54,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:54,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:54,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:54,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:59,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:16:59,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-10-28 19:16:59,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 19:16:59,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-28 19:16:59,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:16:59,240 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:16:59,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 19:16:59,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 19:16:59,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-28 19:16:59,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:16:59,708 WARN L193 SmtUtils]: Spent 397.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-10-28 19:16:59,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:16:59,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:16:59,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:59,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:16:59,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:16:59,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:16:59,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 19:16:59,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:16:59,732 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:16:59,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:16:59,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:16:59,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:16:59,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 19:16:59,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:16:59,780 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [795827042] [2020-10-28 19:16:59,780 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:16:59,780 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 19:16:59,780 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990710629] [2020-10-28 19:16:59,781 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 19:16:59,781 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:16:59,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 19:16:59,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:16:59,782 INFO L87 Difference]: Start difference. First operand 22631 states and 31718 transitions. Second operand 5 states. [2020-10-28 19:17:02,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:17:02,727 INFO L93 Difference]: Finished difference Result 41969 states and 58842 transitions. [2020-10-28 19:17:02,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 19:17:02,728 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 157 [2020-10-28 19:17:02,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:17:02,766 INFO L225 Difference]: With dead ends: 41969 [2020-10-28 19:17:02,767 INFO L226 Difference]: Without dead ends: 19377 [2020-10-28 19:17:02,805 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 19:17:02,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19377 states. [2020-10-28 19:17:03,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19377 to 19377. [2020-10-28 19:17:03,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19377 states. [2020-10-28 19:17:03,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19377 states to 19377 states and 27181 transitions. [2020-10-28 19:17:03,924 INFO L78 Accepts]: Start accepts. Automaton has 19377 states and 27181 transitions. Word has length 157 [2020-10-28 19:17:03,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:17:03,924 INFO L481 AbstractCegarLoop]: Abstraction has 19377 states and 27181 transitions. [2020-10-28 19:17:03,924 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 19:17:03,924 INFO L276 IsEmpty]: Start isEmpty. Operand 19377 states and 27181 transitions. [2020-10-28 19:17:03,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-10-28 19:17:03,944 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:17:03,944 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 19:17:03,944 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 19:17:03,945 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:17:03,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:17:03,945 INFO L82 PathProgramCache]: Analyzing trace with hash 954659909, now seen corresponding path program 1 times [2020-10-28 19:17:03,945 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:17:03,946 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [671253013] [2020-10-28 19:17:03,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:17:03,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:17:03,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:04,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:04,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:04,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:04,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:04,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:06,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:08,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:17:08,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-28 19:17:08,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 19:17:08,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-28 19:17:08,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:17:08,993 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:17:08,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 19:17:08,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 19:17:08,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-28 19:17:08,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:17:09,505 WARN L193 SmtUtils]: Spent 428.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-10-28 19:17:09,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:17:09,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:17:09,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:09,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:17:09,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:17:09,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:17:09,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 19:17:09,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:17:09,526 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:17:09,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:17:09,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:17:09,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:17:09,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:17:09,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:17:09,565 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [671253013] [2020-10-28 19:17:09,566 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:17:09,566 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 19:17:09,566 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658368069] [2020-10-28 19:17:09,566 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 19:17:09,566 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:17:09,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 19:17:09,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:17:09,567 INFO L87 Difference]: Start difference. First operand 19377 states and 27181 transitions. Second operand 5 states. [2020-10-28 19:17:13,185 WARN L193 SmtUtils]: Spent 457.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-10-28 19:17:15,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:17:15,335 INFO L93 Difference]: Finished difference Result 47400 states and 66451 transitions. [2020-10-28 19:17:15,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 19:17:15,336 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 159 [2020-10-28 19:17:15,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:17:15,387 INFO L225 Difference]: With dead ends: 47400 [2020-10-28 19:17:15,387 INFO L226 Difference]: Without dead ends: 28939 [2020-10-28 19:17:15,425 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 19:17:15,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28939 states. [2020-10-28 19:17:17,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28939 to 28877. [2020-10-28 19:17:17,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28877 states. [2020-10-28 19:17:17,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28877 states to 28877 states and 39840 transitions. [2020-10-28 19:17:17,385 INFO L78 Accepts]: Start accepts. Automaton has 28877 states and 39840 transitions. Word has length 159 [2020-10-28 19:17:17,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:17:17,386 INFO L481 AbstractCegarLoop]: Abstraction has 28877 states and 39840 transitions. [2020-10-28 19:17:17,386 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 19:17:17,386 INFO L276 IsEmpty]: Start isEmpty. Operand 28877 states and 39840 transitions. [2020-10-28 19:17:17,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-10-28 19:17:17,407 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:17:17,407 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 19:17:17,408 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 19:17:17,408 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:17:17,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:17:17,408 INFO L82 PathProgramCache]: Analyzing trace with hash -1077848246, now seen corresponding path program 1 times [2020-10-28 19:17:17,409 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:17:17,409 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [586107132] [2020-10-28 19:17:17,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:17:17,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:17:17,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:17,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:17,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:17,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:17,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:17,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:17,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:20,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:20,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:22,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:17:22,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-10-28 19:17:22,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-28 19:17:22,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-28 19:17:22,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:17:22,441 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:17:22,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 19:17:22,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 19:17:22,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-28 19:17:22,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:17:22,963 WARN L193 SmtUtils]: Spent 424.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-10-28 19:17:22,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:17:22,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:17:22,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:22,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:17:22,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:17:22,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:17:22,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 19:17:22,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:17:22,989 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:17:22,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:17:22,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:17:22,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:17:22,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:17:23,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:17:23,049 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [586107132] [2020-10-28 19:17:23,049 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:17:23,049 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 19:17:23,049 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795093151] [2020-10-28 19:17:23,051 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 19:17:23,051 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:17:23,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 19:17:23,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:17:23,052 INFO L87 Difference]: Start difference. First operand 28877 states and 39840 transitions. Second operand 5 states. [2020-10-28 19:17:23,547 WARN L193 SmtUtils]: Spent 452.00 ms on a formula simplification that was a NOOP. DAG size: 230 [2020-10-28 19:17:28,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:17:28,942 INFO L93 Difference]: Finished difference Result 51314 states and 70786 transitions. [2020-10-28 19:17:28,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 19:17:28,943 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 160 [2020-10-28 19:17:28,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:17:28,977 INFO L225 Difference]: With dead ends: 51314 [2020-10-28 19:17:28,977 INFO L226 Difference]: Without dead ends: 28869 [2020-10-28 19:17:29,000 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 19:17:29,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28869 states. [2020-10-28 19:17:30,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28869 to 28838. [2020-10-28 19:17:30,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28838 states. [2020-10-28 19:17:30,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28838 states to 28838 states and 39643 transitions. [2020-10-28 19:17:30,868 INFO L78 Accepts]: Start accepts. Automaton has 28838 states and 39643 transitions. Word has length 160 [2020-10-28 19:17:30,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:17:30,869 INFO L481 AbstractCegarLoop]: Abstraction has 28838 states and 39643 transitions. [2020-10-28 19:17:30,869 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 19:17:30,869 INFO L276 IsEmpty]: Start isEmpty. Operand 28838 states and 39643 transitions. [2020-10-28 19:17:30,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-10-28 19:17:30,889 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:17:30,889 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 19:17:30,889 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 19:17:30,889 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:17:30,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:17:30,890 INFO L82 PathProgramCache]: Analyzing trace with hash -459433482, now seen corresponding path program 1 times [2020-10-28 19:17:30,890 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:17:30,890 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1096315578] [2020-10-28 19:17:30,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:17:30,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:17:30,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:30,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:31,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:31,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:31,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:31,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:35,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:17:35,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-10-28 19:17:35,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 19:17:35,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-28 19:17:35,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:17:35,934 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:17:35,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 19:17:35,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-28 19:17:35,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-28 19:17:35,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:17:36,434 WARN L193 SmtUtils]: Spent 421.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-10-28 19:17:36,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:17:36,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:17:36,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:36,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:17:36,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:17:36,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:17:36,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 19:17:36,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:17:36,454 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:17:36,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:17:36,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:17:36,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:17:36,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:17:36,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:17:36,490 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1096315578] [2020-10-28 19:17:36,490 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:17:36,490 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 19:17:36,490 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957492338] [2020-10-28 19:17:36,491 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 19:17:36,491 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:17:36,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 19:17:36,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:17:36,491 INFO L87 Difference]: Start difference. First operand 28838 states and 39643 transitions. Second operand 5 states. [2020-10-28 19:17:39,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:17:39,964 INFO L93 Difference]: Finished difference Result 53974 states and 74361 transitions. [2020-10-28 19:17:39,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 19:17:39,964 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 161 [2020-10-28 19:17:39,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:17:39,992 INFO L225 Difference]: With dead ends: 53974 [2020-10-28 19:17:39,992 INFO L226 Difference]: Without dead ends: 25687 [2020-10-28 19:17:40,019 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 19:17:40,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25687 states. [2020-10-28 19:17:41,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25687 to 25687. [2020-10-28 19:17:41,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25687 states. [2020-10-28 19:17:41,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25687 states to 25687 states and 35319 transitions. [2020-10-28 19:17:41,537 INFO L78 Accepts]: Start accepts. Automaton has 25687 states and 35319 transitions. Word has length 161 [2020-10-28 19:17:41,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:17:41,538 INFO L481 AbstractCegarLoop]: Abstraction has 25687 states and 35319 transitions. [2020-10-28 19:17:41,538 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 19:17:41,538 INFO L276 IsEmpty]: Start isEmpty. Operand 25687 states and 35319 transitions. [2020-10-28 19:17:41,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-10-28 19:17:41,551 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:17:41,552 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 19:17:41,552 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 19:17:41,552 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:17:41,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:17:41,553 INFO L82 PathProgramCache]: Analyzing trace with hash 1856504018, now seen corresponding path program 1 times [2020-10-28 19:17:41,553 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:17:41,553 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [575489752] [2020-10-28 19:17:41,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:17:41,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:17:41,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:41,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:41,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:41,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:41,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:41,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:46,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:17:46,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-10-28 19:17:46,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 19:17:46,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-28 19:17:46,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:17:46,581 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:17:46,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 19:17:46,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-28 19:17:46,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-28 19:17:46,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:17:47,082 WARN L193 SmtUtils]: Spent 427.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-10-28 19:17:47,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:17:47,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:17:47,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:47,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:17:47,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:17:47,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:17:47,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 19:17:47,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:17:47,101 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:17:47,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:17:47,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:17:47,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:17:47,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:17:47,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:17:47,129 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [575489752] [2020-10-28 19:17:47,129 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:17:47,129 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 19:17:47,129 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507912103] [2020-10-28 19:17:47,130 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 19:17:47,130 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:17:47,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 19:17:47,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:17:47,131 INFO L87 Difference]: Start difference. First operand 25687 states and 35319 transitions. Second operand 5 states. [2020-10-28 19:17:50,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:17:50,313 INFO L93 Difference]: Finished difference Result 43027 states and 59111 transitions. [2020-10-28 19:17:50,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 19:17:50,314 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 162 [2020-10-28 19:17:50,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:17:50,335 INFO L225 Difference]: With dead ends: 43027 [2020-10-28 19:17:50,336 INFO L226 Difference]: Without dead ends: 17400 [2020-10-28 19:17:50,354 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 19:17:50,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17400 states. [2020-10-28 19:17:51,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17400 to 17400. [2020-10-28 19:17:51,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17400 states. [2020-10-28 19:17:51,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17400 states to 17400 states and 23869 transitions. [2020-10-28 19:17:51,483 INFO L78 Accepts]: Start accepts. Automaton has 17400 states and 23869 transitions. Word has length 162 [2020-10-28 19:17:51,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:17:51,483 INFO L481 AbstractCegarLoop]: Abstraction has 17400 states and 23869 transitions. [2020-10-28 19:17:51,483 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 19:17:51,484 INFO L276 IsEmpty]: Start isEmpty. Operand 17400 states and 23869 transitions. [2020-10-28 19:17:51,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-10-28 19:17:51,493 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:17:51,493 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 19:17:51,493 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 19:17:51,493 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:17:51,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:17:51,494 INFO L82 PathProgramCache]: Analyzing trace with hash -1457123526, now seen corresponding path program 1 times [2020-10-28 19:17:51,494 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:17:51,494 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [500260561] [2020-10-28 19:17:51,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:17:51,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:17:51,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:51,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:51,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:51,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:51,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:51,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:51,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:51,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:51,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:54,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:56,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:17:56,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-10-28 19:17:56,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-28 19:17:56,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-28 19:17:56,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:17:56,530 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:17:56,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 19:17:56,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 19:17:56,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-28 19:17:56,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 19:17:57,037 WARN L193 SmtUtils]: Spent 405.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-10-28 19:17:57,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:17:57,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:17:57,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:57,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:17:57,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:17:57,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:17:57,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 19:17:57,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:17:57,054 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:17:57,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:17:57,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:17:57,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:17:57,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:17:57,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:17:57,092 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [500260561] [2020-10-28 19:17:57,092 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:17:57,092 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 19:17:57,093 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145231661] [2020-10-28 19:17:57,093 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 19:17:57,093 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:17:57,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 19:17:57,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:17:57,094 INFO L87 Difference]: Start difference. First operand 17400 states and 23869 transitions. Second operand 5 states. [2020-10-28 19:17:57,613 WARN L193 SmtUtils]: Spent 469.00 ms on a formula simplification that was a NOOP. DAG size: 230 [2020-10-28 19:18:02,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:18:02,657 INFO L93 Difference]: Finished difference Result 30740 states and 42144 transitions. [2020-10-28 19:18:02,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 19:18:02,657 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 165 [2020-10-28 19:18:02,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:18:02,676 INFO L225 Difference]: With dead ends: 30740 [2020-10-28 19:18:02,677 INFO L226 Difference]: Without dead ends: 17448 [2020-10-28 19:18:02,692 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 19:18:02,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17448 states. [2020-10-28 19:18:03,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17448 to 17391. [2020-10-28 19:18:03,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17391 states. [2020-10-28 19:18:03,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17391 states to 17391 states and 23764 transitions. [2020-10-28 19:18:03,775 INFO L78 Accepts]: Start accepts. Automaton has 17391 states and 23764 transitions. Word has length 165 [2020-10-28 19:18:03,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:18:03,776 INFO L481 AbstractCegarLoop]: Abstraction has 17391 states and 23764 transitions. [2020-10-28 19:18:03,776 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 19:18:03,776 INFO L276 IsEmpty]: Start isEmpty. Operand 17391 states and 23764 transitions. [2020-10-28 19:18:03,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-10-28 19:18:03,786 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:18:03,786 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 19:18:03,786 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 19:18:03,786 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:18:03,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:18:03,787 INFO L82 PathProgramCache]: Analyzing trace with hash -1883577404, now seen corresponding path program 1 times [2020-10-28 19:18:03,787 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:18:03,787 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1554326904] [2020-10-28 19:18:03,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:18:03,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:18:03,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:03,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:03,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:04,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:04,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:04,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:05,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:08,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:18:08,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-28 19:18:08,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 19:18:08,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-28 19:18:08,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:18:08,826 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:18:08,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 19:18:08,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 98 [2020-10-28 19:18:08,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-28 19:18:08,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:18:09,352 WARN L193 SmtUtils]: Spent 429.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-10-28 19:18:09,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:18:09,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:18:09,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:09,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:18:09,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:18:09,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:18:09,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 19:18:09,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:18:09,374 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:18:09,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:18:09,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:18:09,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:18:09,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:18:09,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:18:09,423 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1554326904] [2020-10-28 19:18:09,423 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:18:09,423 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 19:18:09,424 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987304443] [2020-10-28 19:18:09,424 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 19:18:09,424 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:18:09,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 19:18:09,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:18:09,425 INFO L87 Difference]: Start difference. First operand 17391 states and 23764 transitions. Second operand 5 states. [2020-10-28 19:18:14,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:18:14,370 INFO L93 Difference]: Finished difference Result 37487 states and 53499 transitions. [2020-10-28 19:18:14,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 19:18:14,371 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 166 [2020-10-28 19:18:14,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:18:14,402 INFO L225 Difference]: With dead ends: 37487 [2020-10-28 19:18:14,402 INFO L226 Difference]: Without dead ends: 26531 [2020-10-28 19:18:14,415 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 19:18:14,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26531 states. [2020-10-28 19:18:15,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26531 to 17391. [2020-10-28 19:18:15,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17391 states. [2020-10-28 19:18:15,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17391 states to 17391 states and 23702 transitions. [2020-10-28 19:18:15,636 INFO L78 Accepts]: Start accepts. Automaton has 17391 states and 23702 transitions. Word has length 166 [2020-10-28 19:18:15,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:18:15,637 INFO L481 AbstractCegarLoop]: Abstraction has 17391 states and 23702 transitions. [2020-10-28 19:18:15,637 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 19:18:15,637 INFO L276 IsEmpty]: Start isEmpty. Operand 17391 states and 23702 transitions. [2020-10-28 19:18:15,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-10-28 19:18:15,648 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:18:15,648 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 19:18:15,649 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 19:18:15,649 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:18:15,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:18:15,649 INFO L82 PathProgramCache]: Analyzing trace with hash -1177406525, now seen corresponding path program 1 times [2020-10-28 19:18:15,649 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:18:15,650 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1595467709] [2020-10-28 19:18:15,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:18:15,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:18:15,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:15,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:15,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:15,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:15,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:20,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:20,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:20,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:20,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:18:20,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-28 19:18:20,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 19:18:20,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-28 19:18:20,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:18:20,682 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:18:20,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 19:18:20,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-28 19:18:20,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-28 19:18:20,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:18:21,204 WARN L193 SmtUtils]: Spent 440.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-10-28 19:18:21,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:18:21,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:18:21,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:21,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:18:21,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:18:21,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:18:21,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 19:18:21,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:18:21,225 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:18:21,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:18:21,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:18:21,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:18:21,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:18:21,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:18:21,261 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1595467709] [2020-10-28 19:18:21,261 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:18:21,261 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 19:18:21,261 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759797146] [2020-10-28 19:18:21,262 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 19:18:21,262 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:18:21,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 19:18:21,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:18:21,262 INFO L87 Difference]: Start difference. First operand 17391 states and 23702 transitions. Second operand 5 states. [2020-10-28 19:18:24,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:18:24,313 INFO L93 Difference]: Finished difference Result 24860 states and 33929 transitions. [2020-10-28 19:18:24,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 19:18:24,314 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 166 [2020-10-28 19:18:24,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:18:24,331 INFO L225 Difference]: With dead ends: 24860 [2020-10-28 19:18:24,331 INFO L226 Difference]: Without dead ends: 15082 [2020-10-28 19:18:24,341 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 19:18:24,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15082 states. [2020-10-28 19:18:25,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15082 to 15082. [2020-10-28 19:18:25,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15082 states. [2020-10-28 19:18:25,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15082 states to 15082 states and 20529 transitions. [2020-10-28 19:18:25,254 INFO L78 Accepts]: Start accepts. Automaton has 15082 states and 20529 transitions. Word has length 166 [2020-10-28 19:18:25,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:18:25,254 INFO L481 AbstractCegarLoop]: Abstraction has 15082 states and 20529 transitions. [2020-10-28 19:18:25,254 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 19:18:25,254 INFO L276 IsEmpty]: Start isEmpty. Operand 15082 states and 20529 transitions. [2020-10-28 19:18:25,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-10-28 19:18:25,262 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:18:25,262 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 19:18:25,262 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 19:18:25,262 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:18:25,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:18:25,263 INFO L82 PathProgramCache]: Analyzing trace with hash -1448086340, now seen corresponding path program 1 times [2020-10-28 19:18:25,263 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:18:25,263 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1148032586] [2020-10-28 19:18:25,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:18:25,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:18:25,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:25,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:25,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:25,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:26,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:26,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:26,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:28,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:30,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:18:30,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-28 19:18:30,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 19:18:30,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-28 19:18:30,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:18:30,296 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:18:30,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:18:30,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-10-28 19:18:30,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-28 19:18:30,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:18:30,767 WARN L193 SmtUtils]: Spent 429.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-10-28 19:18:30,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:18:30,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:18:30,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:30,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:18:30,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:18:30,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:18:30,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 19:18:30,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:18:30,782 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:18:30,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:18:30,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:18:30,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:18:30,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:18:30,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:18:30,814 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1148032586] [2020-10-28 19:18:30,815 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:18:30,815 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 19:18:30,815 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696591697] [2020-10-28 19:18:30,815 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 19:18:30,816 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:18:30,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 19:18:30,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 19:18:30,816 INFO L87 Difference]: Start difference. First operand 15082 states and 20529 transitions. Second operand 4 states. [2020-10-28 19:18:34,683 WARN L193 SmtUtils]: Spent 466.00 ms on a formula simplification that was a NOOP. DAG size: 231 [2020-10-28 19:18:35,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:18:35,780 INFO L93 Difference]: Finished difference Result 37610 states and 52095 transitions. [2020-10-28 19:18:35,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 19:18:35,780 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 169 [2020-10-28 19:18:35,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:18:35,804 INFO L225 Difference]: With dead ends: 37610 [2020-10-28 19:18:35,804 INFO L226 Difference]: Without dead ends: 23803 [2020-10-28 19:18:35,815 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:18:35,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23803 states. [2020-10-28 19:18:37,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23803 to 20046. [2020-10-28 19:18:37,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20046 states. [2020-10-28 19:18:37,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20046 states to 20046 states and 28223 transitions. [2020-10-28 19:18:37,144 INFO L78 Accepts]: Start accepts. Automaton has 20046 states and 28223 transitions. Word has length 169 [2020-10-28 19:18:37,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:18:37,145 INFO L481 AbstractCegarLoop]: Abstraction has 20046 states and 28223 transitions. [2020-10-28 19:18:37,145 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 19:18:37,145 INFO L276 IsEmpty]: Start isEmpty. Operand 20046 states and 28223 transitions. [2020-10-28 19:18:37,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-10-28 19:18:37,152 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:18:37,152 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 19:18:37,152 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-28 19:18:37,153 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:18:37,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:18:37,153 INFO L82 PathProgramCache]: Analyzing trace with hash 1108926271, now seen corresponding path program 1 times [2020-10-28 19:18:37,153 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:18:37,153 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [251573043] [2020-10-28 19:18:37,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:18:37,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:18:37,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:37,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:37,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:37,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:38,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:39,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:41,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:42,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:18:42,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-28 19:18:42,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 19:18:42,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-28 19:18:42,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:18:42,198 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:18:42,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:18:42,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-10-28 19:18:42,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-28 19:18:42,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:18:42,664 WARN L193 SmtUtils]: Spent 415.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-10-28 19:18:42,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:18:42,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:18:42,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:42,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:18:42,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:18:42,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:18:42,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 19:18:42,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:18:42,680 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:18:42,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:18:42,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:18:42,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:18:42,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:18:42,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:18:42,711 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [251573043] [2020-10-28 19:18:42,711 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:18:42,711 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 19:18:42,712 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458033503] [2020-10-28 19:18:42,712 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 19:18:42,712 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:18:42,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 19:18:42,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 19:18:42,713 INFO L87 Difference]: Start difference. First operand 20046 states and 28223 transitions. Second operand 4 states. [2020-10-28 19:18:46,835 WARN L193 SmtUtils]: Spent 471.00 ms on a formula simplification that was a NOOP. DAG size: 231 [2020-10-28 19:18:48,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:18:48,285 INFO L93 Difference]: Finished difference Result 50482 states and 72639 transitions. [2020-10-28 19:18:48,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 19:18:48,286 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 172 [2020-10-28 19:18:48,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:18:48,323 INFO L225 Difference]: With dead ends: 50482 [2020-10-28 19:18:48,324 INFO L226 Difference]: Without dead ends: 31491 [2020-10-28 19:18:48,341 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:18:48,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31491 states. [2020-10-28 19:18:50,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31491 to 28752. [2020-10-28 19:18:50,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28752 states. [2020-10-28 19:18:50,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28752 states to 28752 states and 41729 transitions. [2020-10-28 19:18:50,552 INFO L78 Accepts]: Start accepts. Automaton has 28752 states and 41729 transitions. Word has length 172 [2020-10-28 19:18:50,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:18:50,553 INFO L481 AbstractCegarLoop]: Abstraction has 28752 states and 41729 transitions. [2020-10-28 19:18:50,553 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 19:18:50,553 INFO L276 IsEmpty]: Start isEmpty. Operand 28752 states and 41729 transitions. [2020-10-28 19:18:50,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-10-28 19:18:50,560 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:18:50,560 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 19:18:50,561 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-28 19:18:50,561 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:18:50,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:18:50,561 INFO L82 PathProgramCache]: Analyzing trace with hash -1046476487, now seen corresponding path program 1 times [2020-10-28 19:18:50,562 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:18:50,562 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [881212192] [2020-10-28 19:18:50,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:18:50,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:18:50,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:50,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:50,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:50,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:50,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:51,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:52,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:55,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:18:55,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-10-28 19:18:55,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 19:18:55,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-28 19:18:55,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:18:55,599 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:18:55,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:18:55,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-10-28 19:18:55,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 19:18:55,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:18:56,056 WARN L193 SmtUtils]: Spent 414.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-10-28 19:18:56,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:18:56,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:18:56,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:56,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:18:56,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:18:56,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:18:56,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 19:18:56,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:18:56,074 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:18:56,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:18:56,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:18:56,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:18:56,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:18:56,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:18:56,100 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [881212192] [2020-10-28 19:18:56,100 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:18:56,100 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 19:18:56,100 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888267374] [2020-10-28 19:18:56,101 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 19:18:56,101 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:18:56,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 19:18:56,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 19:18:56,101 INFO L87 Difference]: Start difference. First operand 28752 states and 41729 transitions. Second operand 4 states. [2020-10-28 19:19:00,003 WARN L193 SmtUtils]: Spent 474.00 ms on a formula simplification that was a NOOP. DAG size: 231 [2020-10-28 19:19:02,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:19:02,869 INFO L93 Difference]: Finished difference Result 73664 states and 109033 transitions. [2020-10-28 19:19:02,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 19:19:02,870 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 175 [2020-10-28 19:19:02,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:19:02,933 INFO L225 Difference]: With dead ends: 73664 [2020-10-28 19:19:02,934 INFO L226 Difference]: Without dead ends: 45747 [2020-10-28 19:19:02,958 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:19:02,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45747 states.