/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.5.4.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 06:11:49,347 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 06:11:49,350 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 06:11:49,388 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 06:11:49,388 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 06:11:49,390 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 06:11:49,392 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 06:11:49,394 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 06:11:49,396 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 06:11:49,398 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 06:11:49,399 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 06:11:49,400 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 06:11:49,401 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 06:11:49,402 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 06:11:49,404 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 06:11:49,405 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 06:11:49,406 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 06:11:49,407 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 06:11:49,420 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 06:11:49,426 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 06:11:49,430 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 06:11:49,434 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 06:11:49,435 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 06:11:49,436 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 06:11:49,439 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 06:11:49,440 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 06:11:49,440 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 06:11:49,441 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 06:11:49,442 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 06:11:49,443 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 06:11:49,444 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 06:11:49,445 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 06:11:49,446 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 06:11:49,447 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 06:11:49,448 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 06:11:49,448 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 06:11:49,449 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 06:11:49,450 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 06:11:49,450 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 06:11:49,451 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 06:11:49,452 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 06:11:49,453 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 [2020-10-27 06:11:49,482 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 06:11:49,482 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 06:11:49,483 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 06:11:49,484 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 06:11:49,484 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 06:11:49,484 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 06:11:49,485 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 06:11:49,485 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 06:11:49,485 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 06:11:49,485 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 06:11:49,486 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 06:11:49,486 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 06:11:49,486 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 06:11:49,486 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 06:11:49,487 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 06:11:49,487 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 06:11:49,487 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 06:11:49,488 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 06:11:49,488 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 06:11:49,488 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 06:11:49,488 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 06:11:49,489 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 06:11:49,489 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 06:11:49,489 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 06:11:49,490 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 06:11:49,490 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 06:11:49,490 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 06:11:49,490 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 06:11:49,491 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 06:11:49,491 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 06:11:49,883 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 06:11:49,917 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 06:11:49,923 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 06:11:49,924 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 06:11:49,925 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 06:11:49,927 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.5.4.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2020-10-27 06:11:50,036 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e44215d17/3ec8e1ed7c7446598c8dc1e96d70c6c9/FLAG850ec5998 [2020-10-27 06:11:50,913 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 06:11:50,915 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.5.4.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2020-10-27 06:11:50,943 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e44215d17/3ec8e1ed7c7446598c8dc1e96d70c6c9/FLAG850ec5998 [2020-10-27 06:11:51,058 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e44215d17/3ec8e1ed7c7446598c8dc1e96d70c6c9 [2020-10-27 06:11:51,067 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 06:11:51,077 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 06:11:51,081 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 06:11:51,081 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 06:11:51,085 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 06:11:51,086 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:11:51" (1/1) ... [2020-10-27 06:11:51,096 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c4b6276 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:11:51, skipping insertion in model container [2020-10-27 06:11:51,096 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:11:51" (1/1) ... [2020-10-27 06:11:51,106 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 06:11:51,209 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 06:11:51,935 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 06:11:51,961 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 06:11:52,220 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 06:11:52,248 INFO L208 MainTranslator]: Completed translation [2020-10-27 06:11:52,248 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:11:52 WrapperNode [2020-10-27 06:11:52,249 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 06:11:52,250 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 06:11:52,250 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 06:11:52,250 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 06:11:52,265 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:11:52" (1/1) ... [2020-10-27 06:11:52,265 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:11:52" (1/1) ... [2020-10-27 06:11:52,293 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:11:52" (1/1) ... [2020-10-27 06:11:52,293 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:11:52" (1/1) ... [2020-10-27 06:11:52,349 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:11:52" (1/1) ... [2020-10-27 06:11:52,395 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:11:52" (1/1) ... [2020-10-27 06:11:52,407 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:11:52" (1/1) ... [2020-10-27 06:11:52,420 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 06:11:52,421 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 06:11:52,421 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 06:11:52,421 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 06:11:52,422 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:11:52" (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 [2020-10-27 06:11:52,502 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 06:11:52,502 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 06:11:52,502 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 06:11:52,503 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 06:11:52,503 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 06:11:52,503 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 06:11:52,503 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 06:11:52,503 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 06:11:52,504 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 06:11:52,504 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 06:11:52,504 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 06:11:52,504 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 06:11:52,504 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 06:11:52,504 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 06:11:52,505 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 06:11:52,505 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 06:11:52,505 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 06:11:52,505 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 06:11:52,505 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-27 06:11:52,506 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-27 06:11:52,506 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 06:11:52,506 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 06:11:52,506 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 06:11:52,506 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 06:11:52,506 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 06:11:52,507 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 06:11:52,507 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 06:11:52,507 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 06:11:52,507 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 06:11:55,529 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 06:11:55,530 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-27 06:11:55,533 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:11:55 BoogieIcfgContainer [2020-10-27 06:11:55,533 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 06:11:55,535 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 06:11:55,535 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 06:11:55,539 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 06:11:55,539 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 06:11:51" (1/3) ... [2020-10-27 06:11:55,540 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54221fe9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 06:11:55, skipping insertion in model container [2020-10-27 06:11:55,540 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:11:52" (2/3) ... [2020-10-27 06:11:55,541 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54221fe9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 06:11:55, skipping insertion in model container [2020-10-27 06:11:55,541 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:11:55" (3/3) ... [2020-10-27 06:11:55,542 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.5.4.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2020-10-27 06:11:55,555 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 06:11:55,561 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 06:11:55,575 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 06:11:55,609 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 06:11:55,609 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 06:11:55,610 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 06:11:55,610 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 06:11:55,610 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 06:11:55,610 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 06:11:55,610 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 06:11:55,610 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 06:11:55,645 INFO L276 IsEmpty]: Start isEmpty. Operand 779 states. [2020-10-27 06:11:55,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2020-10-27 06:11:55,675 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:11:55,676 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 06:11:55,676 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:11:55,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:11:55,684 INFO L82 PathProgramCache]: Analyzing trace with hash 48007832, now seen corresponding path program 1 times [2020-10-27 06:11:55,694 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:11:55,694 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1498611252] [2020-10-27 06:11:55,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:11:56,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:11:56,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:11:57,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:11:58,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:11:58,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:11:59,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:11:59,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:12:01,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:12:01,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-10-27 06:12:01,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 06:12:01,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5106 [2020-10-27 06:12:01,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:12:01,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 06:12:01,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 147 [2020-10-27 06:12:01,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-27 06:12:01,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 06:12:03,452 WARN L193 SmtUtils]: Spent 1.69 s on a formula simplification that was a NOOP. DAG size: 412 [2020-10-27 06:12:03,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:12:03,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:12:03,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:12:03,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:12:03,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:12:03,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:12:03,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-27 06:12:03,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:12:03,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:12:03,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:12:03,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:12:03,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:12:03,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 06:12:03,706 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1498611252] [2020-10-27 06:12:03,708 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:12:03,709 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 06:12:03,710 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291699811] [2020-10-27 06:12:03,715 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 06:12:03,716 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:12:03,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 06:12:03,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 06:12:03,734 INFO L87 Difference]: Start difference. First operand 779 states. Second operand 4 states. [2020-10-27 06:12:05,224 WARN L193 SmtUtils]: Spent 1.39 s on a formula simplification that was a NOOP. DAG size: 414 [2020-10-27 06:12:12,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:12:12,046 INFO L93 Difference]: Finished difference Result 1213 states and 2154 transitions. [2020-10-27 06:12:12,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 06:12:12,049 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 218 [2020-10-27 06:12:12,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:12:12,091 INFO L225 Difference]: With dead ends: 1213 [2020-10-27 06:12:12,091 INFO L226 Difference]: Without dead ends: 978 [2020-10-27 06:12:12,099 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:12:12,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 978 states. [2020-10-27 06:12:12,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 978 to 975. [2020-10-27 06:12:12,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 975 states. [2020-10-27 06:12:12,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 975 states to 975 states and 1687 transitions. [2020-10-27 06:12:12,258 INFO L78 Accepts]: Start accepts. Automaton has 975 states and 1687 transitions. Word has length 218 [2020-10-27 06:12:12,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:12:12,259 INFO L481 AbstractCegarLoop]: Abstraction has 975 states and 1687 transitions. [2020-10-27 06:12:12,259 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 06:12:12,260 INFO L276 IsEmpty]: Start isEmpty. Operand 975 states and 1687 transitions. [2020-10-27 06:12:12,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2020-10-27 06:12:12,266 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:12:12,267 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 06:12:12,267 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 06:12:12,267 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:12:12,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:12:12,268 INFO L82 PathProgramCache]: Analyzing trace with hash 1152014067, now seen corresponding path program 1 times [2020-10-27 06:12:12,269 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:12:12,269 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1449511211] [2020-10-27 06:12:12,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:12:12,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:12:12,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:12:12,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:12:13,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:12:14,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:12:15,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:12:17,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:12:17,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 230 [2020-10-27 06:12:17,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 06:12:17,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5081 [2020-10-27 06:12:17,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:12:17,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:12:17,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:12:17,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 193 [2020-10-27 06:12:17,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-27 06:12:19,005 WARN L193 SmtUtils]: Spent 1.14 s on a formula simplification that was a NOOP. DAG size: 412 [2020-10-27 06:12:19,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:12:19,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:12:19,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:12:19,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:12:19,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:12:19,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:12:19,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-27 06:12:19,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:12:19,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:12:19,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:12:19,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:12:19,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:12:19,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 06:12:19,252 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1449511211] [2020-10-27 06:12:19,253 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:12:19,253 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:12:19,253 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000118485] [2020-10-27 06:12:19,255 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:12:19,255 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:12:19,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:12:19,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:12:19,256 INFO L87 Difference]: Start difference. First operand 975 states and 1687 transitions. Second operand 5 states. [2020-10-27 06:12:27,809 WARN L193 SmtUtils]: Spent 1.13 s on a formula simplification that was a NOOP. DAG size: 418 [2020-10-27 06:12:28,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:12:28,023 INFO L93 Difference]: Finished difference Result 2843 states and 4919 transitions. [2020-10-27 06:12:28,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 06:12:28,025 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 222 [2020-10-27 06:12:28,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:12:28,039 INFO L225 Difference]: With dead ends: 2843 [2020-10-27 06:12:28,039 INFO L226 Difference]: Without dead ends: 1925 [2020-10-27 06:12:28,045 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 06:12:28,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1925 states. [2020-10-27 06:12:28,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1925 to 1922. [2020-10-27 06:12:28,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1922 states. [2020-10-27 06:12:28,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1922 states to 1922 states and 3319 transitions. [2020-10-27 06:12:28,199 INFO L78 Accepts]: Start accepts. Automaton has 1922 states and 3319 transitions. Word has length 222 [2020-10-27 06:12:28,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:12:28,200 INFO L481 AbstractCegarLoop]: Abstraction has 1922 states and 3319 transitions. [2020-10-27 06:12:28,200 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:12:28,201 INFO L276 IsEmpty]: Start isEmpty. Operand 1922 states and 3319 transitions. [2020-10-27 06:12:28,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2020-10-27 06:12:28,207 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:12:28,208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 06:12:28,208 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 06:12:28,208 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:12:28,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:12:28,209 INFO L82 PathProgramCache]: Analyzing trace with hash 1644447696, now seen corresponding path program 1 times [2020-10-27 06:12:28,210 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:12:28,210 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [398757028] [2020-10-27 06:12:28,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:12:28,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:12:28,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:12:28,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:12:29,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:12:29,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:12:30,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:12:33,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:12:33,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 231 [2020-10-27 06:12:33,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 06:12:33,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5057 [2020-10-27 06:12:33,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:12:33,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:12:33,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:12:33,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 193 [2020-10-27 06:12:33,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 06:12:35,078 WARN L193 SmtUtils]: Spent 1.26 s on a formula simplification that was a NOOP. DAG size: 412 [2020-10-27 06:12:35,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:12:35,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:12:35,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:12:35,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:12:35,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:12:35,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:12:35,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-27 06:12:35,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:12:35,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:12:35,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:12:35,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:12:35,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:12:35,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 06:12:35,377 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [398757028] [2020-10-27 06:12:35,377 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:12:35,378 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:12:35,378 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106933866] [2020-10-27 06:12:35,379 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:12:35,379 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:12:35,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:12:35,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:12:35,382 INFO L87 Difference]: Start difference. First operand 1922 states and 3319 transitions. Second operand 5 states. [2020-10-27 06:12:44,799 WARN L193 SmtUtils]: Spent 1.28 s on a formula simplification that was a NOOP. DAG size: 418 [2020-10-27 06:12:45,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:12:45,081 INFO L93 Difference]: Finished difference Result 5520 states and 9511 transitions. [2020-10-27 06:12:45,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 06:12:45,082 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 223 [2020-10-27 06:12:45,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:12:45,104 INFO L225 Difference]: With dead ends: 5520 [2020-10-27 06:12:45,104 INFO L226 Difference]: Without dead ends: 3739 [2020-10-27 06:12:45,109 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 06:12:45,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3739 states. [2020-10-27 06:12:45,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3739 to 3736. [2020-10-27 06:12:45,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3736 states. [2020-10-27 06:12:45,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3736 states to 3736 states and 6427 transitions. [2020-10-27 06:12:45,398 INFO L78 Accepts]: Start accepts. Automaton has 3736 states and 6427 transitions. Word has length 223 [2020-10-27 06:12:45,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:12:45,399 INFO L481 AbstractCegarLoop]: Abstraction has 3736 states and 6427 transitions. [2020-10-27 06:12:45,399 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:12:45,399 INFO L276 IsEmpty]: Start isEmpty. Operand 3736 states and 6427 transitions. [2020-10-27 06:12:45,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2020-10-27 06:12:45,410 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:12:45,411 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 06:12:45,411 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 06:12:45,411 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:12:45,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:12:45,414 INFO L82 PathProgramCache]: Analyzing trace with hash -363278521, now seen corresponding path program 1 times [2020-10-27 06:12:45,418 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:12:45,419 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [575698637] [2020-10-27 06:12:45,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:12:45,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:12:45,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:12:45,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:12:46,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:12:46,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:12:49,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:12:49,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:12:49,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:12:49,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:12:50,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:12:50,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:12:50,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 231 [2020-10-27 06:12:50,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 06:12:50,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5092 [2020-10-27 06:12:50,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:12:50,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:12:50,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:12:50,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 191 [2020-10-27 06:12:50,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:12:52,099 WARN L193 SmtUtils]: Spent 1.24 s on a formula simplification that was a NOOP. DAG size: 412 [2020-10-27 06:12:52,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:12:52,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:12:52,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:12:52,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:12:52,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:12:52,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:12:52,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 06:12:52,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:12:52,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:12:52,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:12:52,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:12:52,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:12:52,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 06:12:52,297 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [575698637] [2020-10-27 06:12:52,298 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:12:52,298 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:12:52,298 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36219723] [2020-10-27 06:12:52,299 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:12:52,299 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:12:52,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:12:52,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:12:52,300 INFO L87 Difference]: Start difference. First operand 3736 states and 6427 transitions. Second operand 5 states. [2020-10-27 06:13:00,170 WARN L193 SmtUtils]: Spent 1.22 s on a formula simplification that was a NOOP. DAG size: 418 [2020-10-27 06:13:00,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:13:00,396 INFO L93 Difference]: Finished difference Result 11112 states and 19120 transitions. [2020-10-27 06:13:00,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 06:13:00,397 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 223 [2020-10-27 06:13:00,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:13:00,437 INFO L225 Difference]: With dead ends: 11112 [2020-10-27 06:13:00,437 INFO L226 Difference]: Without dead ends: 7400 [2020-10-27 06:13:00,446 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 06:13:00,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7400 states. [2020-10-27 06:13:01,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7400 to 7397. [2020-10-27 06:13:01,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7397 states. [2020-10-27 06:13:01,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7397 states to 7397 states and 12676 transitions. [2020-10-27 06:13:01,040 INFO L78 Accepts]: Start accepts. Automaton has 7397 states and 12676 transitions. Word has length 223 [2020-10-27 06:13:01,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:13:01,041 INFO L481 AbstractCegarLoop]: Abstraction has 7397 states and 12676 transitions. [2020-10-27 06:13:01,041 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:13:01,041 INFO L276 IsEmpty]: Start isEmpty. Operand 7397 states and 12676 transitions. [2020-10-27 06:13:01,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2020-10-27 06:13:01,065 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:13:01,065 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 06:13:01,066 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 06:13:01,066 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:13:01,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:13:01,067 INFO L82 PathProgramCache]: Analyzing trace with hash -1212597076, now seen corresponding path program 1 times [2020-10-27 06:13:01,067 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:13:01,067 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1861753405] [2020-10-27 06:13:01,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:13:01,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:13:01,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:13:01,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:13:02,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:13:02,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:13:04,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:13:04,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:13:05,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:13:05,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:13:05,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:13:06,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:13:06,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 232 [2020-10-27 06:13:06,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 06:13:06,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5097 [2020-10-27 06:13:06,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:13:06,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:13:06,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:13:06,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 190 [2020-10-27 06:13:06,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:13:07,652 WARN L193 SmtUtils]: Spent 1.16 s on a formula simplification that was a NOOP. DAG size: 412 [2020-10-27 06:13:07,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:13:07,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:13:07,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:13:07,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:13:07,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:13:07,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:13:07,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 06:13:07,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:13:07,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:13:07,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:13:07,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:13:07,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:13:07,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 06:13:07,937 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1861753405] [2020-10-27 06:13:07,938 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:13:07,938 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:13:07,938 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580584833] [2020-10-27 06:13:07,939 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:13:07,939 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:13:07,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:13:07,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:13:07,950 INFO L87 Difference]: Start difference. First operand 7397 states and 12676 transitions. Second operand 5 states. [2020-10-27 06:13:16,528 WARN L193 SmtUtils]: Spent 1.20 s on a formula simplification that was a NOOP. DAG size: 418 [2020-10-27 06:13:16,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:13:16,867 INFO L93 Difference]: Finished difference Result 21583 states and 36940 transitions. [2020-10-27 06:13:16,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 06:13:16,868 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 224 [2020-10-27 06:13:16,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:13:16,934 INFO L225 Difference]: With dead ends: 21583 [2020-10-27 06:13:16,934 INFO L226 Difference]: Without dead ends: 14540 [2020-10-27 06:13:16,952 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 06:13:16,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14540 states. [2020-10-27 06:13:18,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14540 to 14537. [2020-10-27 06:13:18,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14537 states. [2020-10-27 06:13:18,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14537 states to 14537 states and 24812 transitions. [2020-10-27 06:13:18,057 INFO L78 Accepts]: Start accepts. Automaton has 14537 states and 24812 transitions. Word has length 224 [2020-10-27 06:13:18,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:13:18,058 INFO L481 AbstractCegarLoop]: Abstraction has 14537 states and 24812 transitions. [2020-10-27 06:13:18,058 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:13:18,058 INFO L276 IsEmpty]: Start isEmpty. Operand 14537 states and 24812 transitions. [2020-10-27 06:13:18,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2020-10-27 06:13:18,093 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:13:18,093 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 06:13:18,094 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 06:13:18,094 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:13:18,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:13:18,095 INFO L82 PathProgramCache]: Analyzing trace with hash -1334012671, now seen corresponding path program 1 times [2020-10-27 06:13:18,095 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:13:18,095 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [614670419] [2020-10-27 06:13:18,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:13:18,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:13:18,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:13:18,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:13:18,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:13:19,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:13:20,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:13:20,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:13:21,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:13:21,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:13:21,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:13:23,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:13:23,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 232 [2020-10-27 06:13:23,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 06:13:23,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5056 [2020-10-27 06:13:23,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:13:23,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:13:23,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:13:23,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 196 [2020-10-27 06:13:23,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:13:24,563 WARN L193 SmtUtils]: Spent 1.19 s on a formula simplification that was a NOOP. DAG size: 412 [2020-10-27 06:13:24,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:13:24,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:13:24,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:13:24,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:13:24,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:13:24,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:13:24,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 06:13:24,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:13:24,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:13:24,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:13:24,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:13:24,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:13:24,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 06:13:24,712 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [614670419] [2020-10-27 06:13:24,713 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:13:24,713 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:13:24,713 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829744429] [2020-10-27 06:13:24,714 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:13:24,714 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:13:24,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:13:24,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:13:24,715 INFO L87 Difference]: Start difference. First operand 14537 states and 24812 transitions. Second operand 5 states. [2020-10-27 06:13:33,879 WARN L193 SmtUtils]: Spent 1.25 s on a formula simplification that was a NOOP. DAG size: 418 [2020-10-27 06:13:34,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:13:34,309 INFO L93 Difference]: Finished difference Result 43333 states and 73964 transitions. [2020-10-27 06:13:34,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 06:13:34,310 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 224 [2020-10-27 06:13:34,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:13:34,384 INFO L225 Difference]: With dead ends: 43333 [2020-10-27 06:13:34,385 INFO L226 Difference]: Without dead ends: 28836 [2020-10-27 06:13:34,420 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 06:13:34,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28836 states. [2020-10-27 06:13:36,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28836 to 28833. [2020-10-27 06:13:36,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28833 states. [2020-10-27 06:13:36,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28833 states to 28833 states and 49008 transitions. [2020-10-27 06:13:36,563 INFO L78 Accepts]: Start accepts. Automaton has 28833 states and 49008 transitions. Word has length 224 [2020-10-27 06:13:36,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:13:36,564 INFO L481 AbstractCegarLoop]: Abstraction has 28833 states and 49008 transitions. [2020-10-27 06:13:36,564 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:13:36,564 INFO L276 IsEmpty]: Start isEmpty. Operand 28833 states and 49008 transitions. [2020-10-27 06:13:36,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2020-10-27 06:13:36,637 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:13:36,637 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 06:13:36,637 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 06:13:36,637 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:13:36,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:13:36,638 INFO L82 PathProgramCache]: Analyzing trace with hash -1168013553, now seen corresponding path program 1 times [2020-10-27 06:13:36,638 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:13:36,638 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1812828678] [2020-10-27 06:13:36,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:13:36,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:13:36,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:13:36,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:13:37,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:13:38,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:13:38,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:13:38,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:13:38,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:13:38,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:13:41,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:13:41,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 233 [2020-10-27 06:13:41,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 06:13:41,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5103 [2020-10-27 06:13:41,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:13:41,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:13:41,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:13:41,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 193 [2020-10-27 06:13:41,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:13:43,110 WARN L193 SmtUtils]: Spent 1.14 s on a formula simplification that was a NOOP. DAG size: 412 [2020-10-27 06:13:43,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:13:43,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:13:43,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:13:43,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:13:43,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:13:43,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:13:43,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 06:13:43,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:13:43,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:13:43,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:13:43,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:13:43,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:13:43,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 06:13:43,252 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1812828678] [2020-10-27 06:13:43,252 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:13:43,252 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:13:43,252 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034116307] [2020-10-27 06:13:43,253 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:13:43,253 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:13:43,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:13:43,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:13:43,254 INFO L87 Difference]: Start difference. First operand 28833 states and 49008 transitions. Second operand 5 states. [2020-10-27 06:13:54,022 WARN L193 SmtUtils]: Spent 1.29 s on a formula simplification that was a NOOP. DAG size: 418 [2020-10-27 06:13:54,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:13:54,766 INFO L93 Difference]: Finished difference Result 83895 states and 142380 transitions. [2020-10-27 06:13:54,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 06:13:54,767 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 225 [2020-10-27 06:13:54,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:13:54,907 INFO L225 Difference]: With dead ends: 83895 [2020-10-27 06:13:54,908 INFO L226 Difference]: Without dead ends: 56196 [2020-10-27 06:13:54,966 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 06:13:55,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56196 states. [2020-10-27 06:13:58,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56196 to 56193. [2020-10-27 06:13:58,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56193 states. [2020-10-27 06:13:59,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56193 states to 56193 states and 94952 transitions. [2020-10-27 06:13:59,005 INFO L78 Accepts]: Start accepts. Automaton has 56193 states and 94952 transitions. Word has length 225 [2020-10-27 06:13:59,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:13:59,005 INFO L481 AbstractCegarLoop]: Abstraction has 56193 states and 94952 transitions. [2020-10-27 06:13:59,005 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:13:59,006 INFO L276 IsEmpty]: Start isEmpty. Operand 56193 states and 94952 transitions. [2020-10-27 06:13:59,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2020-10-27 06:13:59,066 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:13:59,067 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 06:13:59,067 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 06:13:59,067 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:13:59,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:13:59,068 INFO L82 PathProgramCache]: Analyzing trace with hash 1471248364, now seen corresponding path program 1 times [2020-10-27 06:13:59,068 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:13:59,068 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1413868078] [2020-10-27 06:13:59,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:13:59,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:13:59,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:13:59,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:13:59,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:14:00,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:14:00,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:14:00,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:14:00,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:14:00,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:14:00,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:14:04,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:14:04,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 233 [2020-10-27 06:14:04,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 06:14:04,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5047 [2020-10-27 06:14:04,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:14:04,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:14:04,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:14:04,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 193 [2020-10-27 06:14:04,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:14:05,650 WARN L193 SmtUtils]: Spent 1.19 s on a formula simplification that was a NOOP. DAG size: 412 [2020-10-27 06:14:05,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:14:05,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:14:05,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:14:05,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:14:05,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:14:05,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:14:05,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 06:14:05,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:14:05,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:14:05,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:14:05,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:14:05,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:14:05,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 06:14:05,858 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1413868078] [2020-10-27 06:14:05,858 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:14:05,858 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:14:05,859 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497253300] [2020-10-27 06:14:05,859 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:14:05,859 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:14:05,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:14:05,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:14:05,861 INFO L87 Difference]: Start difference. First operand 56193 states and 94952 transitions. Second operand 5 states. [2020-10-27 06:14:19,306 WARN L193 SmtUtils]: Spent 1.20 s on a formula simplification that was a NOOP. DAG size: 418 [2020-10-27 06:14:20,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:14:20,864 INFO L93 Difference]: Finished difference Result 167528 states and 283040 transitions. [2020-10-27 06:14:20,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 06:14:20,865 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 225 [2020-10-27 06:14:20,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:14:21,438 INFO L225 Difference]: With dead ends: 167528 [2020-10-27 06:14:21,438 INFO L226 Difference]: Without dead ends: 111361 [2020-10-27 06:14:21,534 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 06:14:21,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111361 states. [2020-10-27 06:14:29,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111361 to 111358. [2020-10-27 06:14:29,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111358 states. [2020-10-27 06:14:29,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111358 states to 111358 states and 187382 transitions. [2020-10-27 06:14:29,981 INFO L78 Accepts]: Start accepts. Automaton has 111358 states and 187382 transitions. Word has length 225 [2020-10-27 06:14:29,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:14:29,982 INFO L481 AbstractCegarLoop]: Abstraction has 111358 states and 187382 transitions. [2020-10-27 06:14:29,982 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:14:29,982 INFO L276 IsEmpty]: Start isEmpty. Operand 111358 states and 187382 transitions. [2020-10-27 06:14:30,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2020-10-27 06:14:30,149 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:14:30,150 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 06:14:30,150 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 06:14:30,150 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:14:30,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:14:30,151 INFO L82 PathProgramCache]: Analyzing trace with hash -817410888, now seen corresponding path program 1 times [2020-10-27 06:14:30,151 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:14:30,151 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1559774916] [2020-10-27 06:14:30,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:14:30,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:14:30,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:14:30,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:14:31,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:14:32,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:14:35,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:14:35,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 234 [2020-10-27 06:14:35,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 06:14:35,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5056 [2020-10-27 06:14:35,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:14:35,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 06:14:35,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 06:14:35,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 200 [2020-10-27 06:14:35,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:14:36,755 WARN L193 SmtUtils]: Spent 1.25 s on a formula simplification that was a NOOP. DAG size: 412 [2020-10-27 06:14:36,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:14:36,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:14:36,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:14:36,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:14:36,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:14:36,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:14:36,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-27 06:14:36,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:14:36,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 06:14:36,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:14:36,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 06:14:36,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:14:36,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 06:14:36,973 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1559774916] [2020-10-27 06:14:36,973 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:14:36,973 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 06:14:36,974 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793982806] [2020-10-27 06:14:36,974 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 06:14:36,974 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:14:36,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 06:14:36,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-27 06:14:36,975 INFO L87 Difference]: Start difference. First operand 111358 states and 187382 transitions. Second operand 8 states. [2020-10-27 06:14:38,330 WARN L193 SmtUtils]: Spent 1.24 s on a formula simplification that was a NOOP. DAG size: 418 [2020-10-27 06:14:54,108 WARN L193 SmtUtils]: Spent 1.28 s on a formula simplification that was a NOOP. DAG size: 420 [2020-10-27 06:15:01,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:15:01,660 INFO L93 Difference]: Finished difference Result 217924 states and 365078 transitions. [2020-10-27 06:15:01,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 06:15:01,661 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 226 [2020-10-27 06:15:01,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:15:02,110 INFO L225 Difference]: With dead ends: 217924 [2020-10-27 06:15:02,111 INFO L226 Difference]: Without dead ends: 171441 [2020-10-27 06:15:02,190 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2020-10-27 06:15:02,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171441 states. [2020-10-27 06:15:11,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171441 to 112254. [2020-10-27 06:15:11,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112254 states. [2020-10-27 06:15:12,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112254 states to 112254 states and 188342 transitions. [2020-10-27 06:15:12,073 INFO L78 Accepts]: Start accepts. Automaton has 112254 states and 188342 transitions. Word has length 226 [2020-10-27 06:15:12,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:15:12,074 INFO L481 AbstractCegarLoop]: Abstraction has 112254 states and 188342 transitions. [2020-10-27 06:15:12,074 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 06:15:12,074 INFO L276 IsEmpty]: Start isEmpty. Operand 112254 states and 188342 transitions. [2020-10-27 06:15:12,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2020-10-27 06:15:12,208 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:15:12,208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 06:15:12,208 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 06:15:12,209 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:15:12,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:15:12,209 INFO L82 PathProgramCache]: Analyzing trace with hash -195818526, now seen corresponding path program 1 times [2020-10-27 06:15:12,209 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:15:12,209 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [247545794] [2020-10-27 06:15:12,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:15:12,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:15:12,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:15:12,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:15:13,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:15:13,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:15:14,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:15:14,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:15:14,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:15:17,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:15:17,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 234 [2020-10-27 06:15:17,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 06:15:17,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-27 06:15:17,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:15:17,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:15:17,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:15:17,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 192 [2020-10-27 06:15:17,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:15:18,717 WARN L193 SmtUtils]: Spent 1.20 s on a formula simplification that was a NOOP. DAG size: 412 [2020-10-27 06:15:18,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:15:18,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:15:18,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:15:18,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:15:18,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:15:18,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:15:18,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 06:15:18,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:15:18,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:15:18,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:15:18,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:15:18,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:15:18,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 06:15:18,865 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [247545794] [2020-10-27 06:15:18,865 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:15:18,865 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:15:18,865 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197599548] [2020-10-27 06:15:18,866 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:15:18,866 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:15:18,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:15:18,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:15:18,867 INFO L87 Difference]: Start difference. First operand 112254 states and 188342 transitions. Second operand 5 states.