/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=DEEPEST --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_lcr.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 23:47:09,135 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 23:47:09,139 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 23:47:09,197 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 23:47:09,198 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 23:47:09,205 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 23:47:09,207 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 23:47:09,211 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 23:47:09,214 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 23:47:09,220 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 23:47:09,222 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 23:47:09,223 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 23:47:09,223 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 23:47:09,227 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 23:47:09,229 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 23:47:09,230 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 23:47:09,231 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 23:47:09,234 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 23:47:09,242 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 23:47:09,248 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 23:47:09,249 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 23:47:09,251 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 23:47:09,252 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 23:47:09,253 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 23:47:09,256 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 23:47:09,281 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 23:47:09,282 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 23:47:09,283 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 23:47:09,284 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 23:47:09,285 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 23:47:09,290 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 23:47:09,291 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 23:47:09,292 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 23:47:09,302 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 23:47:09,303 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 23:47:09,303 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 23:47:09,304 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 23:47:09,304 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 23:47:09,305 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 23:47:09,305 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 23:47:09,306 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 23:47:09,314 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 23:47:09,363 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 23:47:09,363 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 23:47:09,368 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 23:47:09,368 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 23:47:09,369 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 23:47:09,369 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 23:47:09,369 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 23:47:09,369 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 23:47:09,369 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 23:47:09,370 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 23:47:09,371 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 23:47:09,371 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 23:47:09,371 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 23:47:09,372 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 23:47:09,372 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 23:47:09,372 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 23:47:09,372 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 23:47:09,372 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 23:47:09,373 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 23:47:09,373 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 23:47:09,373 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 23:47:09,373 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 23:47:09,374 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 23:47:09,374 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 23:47:09,374 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 23:47:09,374 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 23:47:09,374 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 23:47:09,375 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 23:47:09,375 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 23:47:09,375 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 23:47:09,770 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 23:47:09,797 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 23:47:09,800 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 23:47:09,802 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 23:47:09,802 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 23:47:09,804 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-27 23:47:09,888 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/666c02e92/144b86ee6cfd4adcb027dc292fa5478b/FLAG4e88543b7 [2020-10-27 23:47:10,602 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 23:47:10,604 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-27 23:47:10,623 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/666c02e92/144b86ee6cfd4adcb027dc292fa5478b/FLAG4e88543b7 [2020-10-27 23:47:10,834 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/666c02e92/144b86ee6cfd4adcb027dc292fa5478b [2020-10-27 23:47:10,838 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 23:47:10,847 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 23:47:10,851 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 23:47:10,852 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 23:47:10,856 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 23:47:10,857 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 11:47:10" (1/1) ... [2020-10-27 23:47:10,862 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76d972b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:47:10, skipping insertion in model container [2020-10-27 23:47:10,862 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 11:47:10" (1/1) ... [2020-10-27 23:47:10,871 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 23:47:10,940 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 23:47:11,236 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 23:47:11,270 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 23:47:11,447 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 23:47:11,473 INFO L208 MainTranslator]: Completed translation [2020-10-27 23:47:11,474 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:47:11 WrapperNode [2020-10-27 23:47:11,474 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 23:47:11,476 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 23:47:11,476 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 23:47:11,476 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 23:47:11,492 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:47:11" (1/1) ... [2020-10-27 23:47:11,492 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:47:11" (1/1) ... [2020-10-27 23:47:11,507 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:47:11" (1/1) ... [2020-10-27 23:47:11,507 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:47:11" (1/1) ... [2020-10-27 23:47:11,524 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:47:11" (1/1) ... [2020-10-27 23:47:11,549 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:47:11" (1/1) ... [2020-10-27 23:47:11,552 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:47:11" (1/1) ... [2020-10-27 23:47:11,563 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 23:47:11,568 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 23:47:11,568 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 23:47:11,568 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 23:47:11,570 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:47:11" (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 23:47:11,665 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 23:47:11,665 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 23:47:11,666 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 23:47:11,666 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 23:47:11,666 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 23:47:11,667 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 23:47:11,667 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 23:47:11,668 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 23:47:11,668 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 23:47:11,668 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 23:47:11,669 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 23:47:11,669 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-27 23:47:11,670 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 23:47:11,670 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 23:47:11,670 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 23:47:11,671 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 23:47:11,671 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 23:47:11,672 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 23:47:11,672 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 23:47:11,672 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-27 23:47:11,672 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 23:47:11,672 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 23:47:11,673 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 23:47:11,673 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 23:47:11,673 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 23:47:11,673 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 23:47:11,673 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 23:47:11,673 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 23:47:11,674 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 23:47:12,612 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 23:47:12,612 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-27 23:47:12,614 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 11:47:12 BoogieIcfgContainer [2020-10-27 23:47:12,614 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 23:47:12,616 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 23:47:12,617 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 23:47:12,620 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 23:47:12,621 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 11:47:10" (1/3) ... [2020-10-27 23:47:12,621 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67235517 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 11:47:12, skipping insertion in model container [2020-10-27 23:47:12,622 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:47:11" (2/3) ... [2020-10-27 23:47:12,622 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67235517 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 11:47:12, skipping insertion in model container [2020-10-27 23:47:12,622 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 11:47:12" (3/3) ... [2020-10-27 23:47:12,624 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-27 23:47:12,637 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 23:47:12,642 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 23:47:12,657 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 23:47:12,686 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 23:47:12,686 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 23:47:12,686 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 23:47:12,686 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 23:47:12,687 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 23:47:12,687 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 23:47:12,687 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 23:47:12,687 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 23:47:12,721 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states. [2020-10-27 23:47:12,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-27 23:47:12,731 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:47:12,732 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] [2020-10-27 23:47:12,732 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:47:12,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:47:12,739 INFO L82 PathProgramCache]: Analyzing trace with hash 350764180, now seen corresponding path program 1 times [2020-10-27 23:47:12,749 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:47:12,749 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [792545979] [2020-10-27 23:47:12,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:47:13,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:47:13,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:47:13,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:47:13,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:47:13,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:47:13,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:47:13,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:47:14,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:47:15,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:47:15,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:47:18,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:47:18,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-27 23:47:18,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 23:47:18,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-27 23:47:18,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:47:18,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:47:18,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-27 23:47:18,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 23:47:18,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 23:47:18,407 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-27 23:47:18,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:47:18,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:47:18,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:47:18,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:47:18,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:47:18,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:47:18,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 23:47:18,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:47:18,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:47:18,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:47:18,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:47:18,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:47:18,491 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 23:47:18,492 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [792545979] [2020-10-27 23:47:18,494 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:47:18,494 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:47:18,495 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886058342] [2020-10-27 23:47:18,501 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:47:18,501 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:47:18,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:47:18,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:47:18,525 INFO L87 Difference]: Start difference. First operand 132 states. Second operand 4 states. [2020-10-27 23:47:18,841 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-27 23:47:19,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:47:19,777 INFO L93 Difference]: Finished difference Result 258 states and 416 transitions. [2020-10-27 23:47:19,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:47:19,779 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 66 [2020-10-27 23:47:19,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:47:19,792 INFO L225 Difference]: With dead ends: 258 [2020-10-27 23:47:19,792 INFO L226 Difference]: Without dead ends: 190 [2020-10-27 23:47:19,796 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:47:19,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2020-10-27 23:47:19,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 187. [2020-10-27 23:47:19,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2020-10-27 23:47:19,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 268 transitions. [2020-10-27 23:47:19,866 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 268 transitions. Word has length 66 [2020-10-27 23:47:19,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:47:19,867 INFO L481 AbstractCegarLoop]: Abstraction has 187 states and 268 transitions. [2020-10-27 23:47:19,867 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 23:47:19,867 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 268 transitions. [2020-10-27 23:47:19,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-27 23:47:19,870 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:47:19,870 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] [2020-10-27 23:47:19,871 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 23:47:19,871 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:47:19,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:47:19,872 INFO L82 PathProgramCache]: Analyzing trace with hash -2147329497, now seen corresponding path program 1 times [2020-10-27 23:47:19,872 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:47:19,874 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [137328937] [2020-10-27 23:47:19,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:47:19,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:47:19,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:47:20,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:47:20,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:47:20,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:47:20,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:47:20,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:47:21,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:47:21,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:47:21,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:47:24,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:47:24,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-27 23:47:24,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 23:47:24,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-27 23:47:24,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:47:24,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 23:47:24,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-27 23:47:24,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-27 23:47:24,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:47:25,288 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-27 23:47:25,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:47:25,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:47:25,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:47:25,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:47:25,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:47:25,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:47:25,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 23:47:25,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:47:25,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:47:25,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:47:25,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:47:25,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:47:25,334 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 23:47:25,335 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [137328937] [2020-10-27 23:47:25,335 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:47:25,335 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 23:47:25,337 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821992148] [2020-10-27 23:47:25,339 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 23:47:25,339 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:47:25,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 23:47:25,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-27 23:47:25,341 INFO L87 Difference]: Start difference. First operand 187 states and 268 transitions. Second operand 7 states. [2020-10-27 23:47:25,633 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2020-10-27 23:47:26,532 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2020-10-27 23:47:26,796 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-27 23:47:27,045 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2020-10-27 23:47:27,248 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2020-10-27 23:47:28,209 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-27 23:47:28,435 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2020-10-27 23:47:28,866 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-10-27 23:47:28,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:47:28,940 INFO L93 Difference]: Finished difference Result 1088 states and 1666 transitions. [2020-10-27 23:47:28,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-27 23:47:28,941 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 68 [2020-10-27 23:47:28,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:47:28,950 INFO L225 Difference]: With dead ends: 1088 [2020-10-27 23:47:28,951 INFO L226 Difference]: Without dead ends: 946 [2020-10-27 23:47:28,953 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2020-10-27 23:47:28,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 946 states. [2020-10-27 23:47:29,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 946 to 433. [2020-10-27 23:47:29,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 433 states. [2020-10-27 23:47:29,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 433 states to 433 states and 649 transitions. [2020-10-27 23:47:29,032 INFO L78 Accepts]: Start accepts. Automaton has 433 states and 649 transitions. Word has length 68 [2020-10-27 23:47:29,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:47:29,033 INFO L481 AbstractCegarLoop]: Abstraction has 433 states and 649 transitions. [2020-10-27 23:47:29,033 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 23:47:29,033 INFO L276 IsEmpty]: Start isEmpty. Operand 433 states and 649 transitions. [2020-10-27 23:47:29,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-27 23:47:29,037 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:47:29,037 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] [2020-10-27 23:47:29,037 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 23:47:29,037 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:47:29,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:47:29,038 INFO L82 PathProgramCache]: Analyzing trace with hash -1371296962, now seen corresponding path program 1 times [2020-10-27 23:47:29,038 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:47:29,039 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [336305341] [2020-10-27 23:47:29,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:47:29,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:47:29,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:47:29,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:47:29,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:47:29,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:47:29,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:47:29,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:47:31,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:47:31,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:47:31,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:47:33,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:47:33,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:47:33,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:47:33,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:47:33,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:47:34,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:47:34,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-27 23:47:34,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-27 23:47:34,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-27 23:47:34,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:47:34,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 23:47:34,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-27 23:47:34,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-27 23:47:34,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:47:34,370 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-27 23:47:34,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:47:34,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:47:34,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:47:34,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:47:34,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:47:34,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:47:34,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 23:47:34,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:47:34,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:47:34,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:47:34,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:47:34,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:47:34,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:47:34,416 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [336305341] [2020-10-27 23:47:34,416 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:47:34,416 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 23:47:34,416 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121167764] [2020-10-27 23:47:34,417 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 23:47:34,417 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:47:34,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 23:47:34,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-27 23:47:34,418 INFO L87 Difference]: Start difference. First operand 433 states and 649 transitions. Second operand 7 states. [2020-10-27 23:47:34,670 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2020-10-27 23:47:35,311 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-27 23:47:35,543 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2020-10-27 23:47:35,788 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2020-10-27 23:47:36,028 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2020-10-27 23:47:36,771 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-27 23:47:36,979 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2020-10-27 23:47:37,409 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-10-27 23:47:37,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:47:37,464 INFO L93 Difference]: Finished difference Result 2250 states and 3503 transitions. [2020-10-27 23:47:37,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-27 23:47:37,473 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 69 [2020-10-27 23:47:37,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:47:37,485 INFO L225 Difference]: With dead ends: 2250 [2020-10-27 23:47:37,486 INFO L226 Difference]: Without dead ends: 1908 [2020-10-27 23:47:37,489 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2020-10-27 23:47:37,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1908 states. [2020-10-27 23:47:37,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1908 to 659. [2020-10-27 23:47:37,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 659 states. [2020-10-27 23:47:37,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 659 states to 659 states and 1004 transitions. [2020-10-27 23:47:37,566 INFO L78 Accepts]: Start accepts. Automaton has 659 states and 1004 transitions. Word has length 69 [2020-10-27 23:47:37,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:47:37,567 INFO L481 AbstractCegarLoop]: Abstraction has 659 states and 1004 transitions. [2020-10-27 23:47:37,567 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 23:47:37,567 INFO L276 IsEmpty]: Start isEmpty. Operand 659 states and 1004 transitions. [2020-10-27 23:47:37,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-27 23:47:37,571 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:47:37,571 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] [2020-10-27 23:47:37,571 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 23:47:37,572 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:47:37,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:47:37,572 INFO L82 PathProgramCache]: Analyzing trace with hash 145493869, now seen corresponding path program 1 times [2020-10-27 23:47:37,572 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:47:37,573 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [734376424] [2020-10-27 23:47:37,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:47:37,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:47:37,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:47:37,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:47:37,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:47:37,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:47:38,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:47:38,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:47:38,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:47:38,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:47:38,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:47:39,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:47:39,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:47:39,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:47:39,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:47:39,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:47:42,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:47:42,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-27 23:47:42,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-27 23:47:42,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-27 23:47:42,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:47:42,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 23:47:42,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-27 23:47:42,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-27 23:47:42,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:47:42,895 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-27 23:47:42,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:47:42,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:47:42,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:47:42,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:47:42,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:47:42,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:47:42,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 23:47:42,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:47:42,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:47:42,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:47:42,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:47:42,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:47:42,981 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 23:47:42,982 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [734376424] [2020-10-27 23:47:42,982 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:47:42,983 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 23:47:42,983 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428645386] [2020-10-27 23:47:42,985 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 23:47:42,985 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:47:42,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 23:47:42,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-27 23:47:42,986 INFO L87 Difference]: Start difference. First operand 659 states and 1004 transitions. Second operand 7 states. [2020-10-27 23:47:43,233 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2020-10-27 23:47:43,912 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-27 23:47:44,119 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2020-10-27 23:47:44,329 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2020-10-27 23:47:44,540 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2020-10-27 23:47:45,244 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-27 23:47:45,464 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2020-10-27 23:47:45,820 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-10-27 23:47:45,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:47:45,857 INFO L93 Difference]: Finished difference Result 2631 states and 4071 transitions. [2020-10-27 23:47:45,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-27 23:47:45,857 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 69 [2020-10-27 23:47:45,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:47:45,871 INFO L225 Difference]: With dead ends: 2631 [2020-10-27 23:47:45,872 INFO L226 Difference]: Without dead ends: 2295 [2020-10-27 23:47:45,874 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2020-10-27 23:47:45,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2295 states. [2020-10-27 23:47:45,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2295 to 1006. [2020-10-27 23:47:45,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1006 states. [2020-10-27 23:47:45,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1006 states to 1006 states and 1532 transitions. [2020-10-27 23:47:45,963 INFO L78 Accepts]: Start accepts. Automaton has 1006 states and 1532 transitions. Word has length 69 [2020-10-27 23:47:45,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:47:45,963 INFO L481 AbstractCegarLoop]: Abstraction has 1006 states and 1532 transitions. [2020-10-27 23:47:45,963 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 23:47:45,963 INFO L276 IsEmpty]: Start isEmpty. Operand 1006 states and 1532 transitions. [2020-10-27 23:47:45,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-27 23:47:45,966 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:47:45,966 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] [2020-10-27 23:47:45,966 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 23:47:45,966 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:47:45,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:47:45,967 INFO L82 PathProgramCache]: Analyzing trace with hash 153041112, now seen corresponding path program 1 times [2020-10-27 23:47:45,967 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:47:45,967 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1656636204] [2020-10-27 23:47:45,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:47:45,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:47:46,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:47:46,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:47:46,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:47:46,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:47:46,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:47:46,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:47:46,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:47:46,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:47:46,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:47:47,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:47:47,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:47:47,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:47:50,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:47:50,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:47:50,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:47:50,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:47:51,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:47:51,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-27 23:47:51,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-27 23:47:51,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-27 23:47:51,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:47:51,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 23:47:51,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-27 23:47:51,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-27 23:47:51,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:47:51,357 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 33 [2020-10-27 23:47:51,600 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-27 23:47:51,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:47:51,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:47:51,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:47:51,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:47:51,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:47:51,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:47:51,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 23:47:51,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:47:51,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:47:51,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:47:51,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:47:51,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:47:51,644 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 23:47:51,644 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1656636204] [2020-10-27 23:47:51,644 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:47:51,644 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 23:47:51,645 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196852873] [2020-10-27 23:47:51,645 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 23:47:51,645 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:47:51,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 23:47:51,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-27 23:47:51,646 INFO L87 Difference]: Start difference. First operand 1006 states and 1532 transitions. Second operand 10 states. [2020-10-27 23:47:51,976 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2020-10-27 23:47:52,319 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 44 [2020-10-27 23:47:53,148 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-10-27 23:47:53,365 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 40 [2020-10-27 23:47:53,527 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 43 [2020-10-27 23:47:55,038 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2020-10-27 23:47:55,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:47:55,338 INFO L93 Difference]: Finished difference Result 5609 states and 8530 transitions. [2020-10-27 23:47:55,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-27 23:47:55,338 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 70 [2020-10-27 23:47:55,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:47:55,368 INFO L225 Difference]: With dead ends: 5609 [2020-10-27 23:47:55,368 INFO L226 Difference]: Without dead ends: 4820 [2020-10-27 23:47:55,373 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=148, Invalid=664, Unknown=0, NotChecked=0, Total=812 [2020-10-27 23:47:55,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4820 states. [2020-10-27 23:47:55,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4820 to 1003. [2020-10-27 23:47:55,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1003 states. [2020-10-27 23:47:55,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1003 states to 1003 states and 1522 transitions. [2020-10-27 23:47:55,551 INFO L78 Accepts]: Start accepts. Automaton has 1003 states and 1522 transitions. Word has length 70 [2020-10-27 23:47:55,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:47:55,551 INFO L481 AbstractCegarLoop]: Abstraction has 1003 states and 1522 transitions. [2020-10-27 23:47:55,551 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 23:47:55,551 INFO L276 IsEmpty]: Start isEmpty. Operand 1003 states and 1522 transitions. [2020-10-27 23:47:55,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-27 23:47:55,553 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:47:55,554 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] [2020-10-27 23:47:55,554 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 23:47:55,554 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:47:55,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:47:55,555 INFO L82 PathProgramCache]: Analyzing trace with hash -393216958, now seen corresponding path program 1 times [2020-10-27 23:47:55,555 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:47:55,555 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [633919500] [2020-10-27 23:47:55,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:47:55,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:47:55,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:47:55,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:47:55,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:47:55,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:47:56,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:47:57,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:47:57,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:47:57,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:47:57,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:47:59,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:47:59,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:47:59,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:47:59,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:47:59,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:47:59,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:00,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:48:00,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-27 23:48:00,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-27 23:48:00,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-27 23:48:00,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:48:00,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 23:48:00,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-27 23:48:00,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-27 23:48:00,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:48:00,873 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 34 [2020-10-27 23:48:01,225 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-27 23:48:01,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:48:01,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:48:01,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:01,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:48:01,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:48:01,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:48:01,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 23:48:01,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:48:01,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:48:01,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:48:01,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:48:01,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:48:01,268 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 23:48:01,269 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [633919500] [2020-10-27 23:48:01,269 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:48:01,269 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-27 23:48:01,269 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644194910] [2020-10-27 23:48:01,270 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-27 23:48:01,270 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:48:01,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-27 23:48:01,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2020-10-27 23:48:01,271 INFO L87 Difference]: Start difference. First operand 1003 states and 1522 transitions. Second operand 14 states. [2020-10-27 23:48:01,548 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-27 23:48:03,017 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-27 23:48:03,267 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2020-10-27 23:48:05,740 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2020-10-27 23:48:06,015 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-10-27 23:48:07,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:48:07,104 INFO L93 Difference]: Finished difference Result 5809 states and 8745 transitions. [2020-10-27 23:48:07,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2020-10-27 23:48:07,104 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 70 [2020-10-27 23:48:07,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:48:07,130 INFO L225 Difference]: With dead ends: 5809 [2020-10-27 23:48:07,130 INFO L226 Difference]: Without dead ends: 5246 [2020-10-27 23:48:07,136 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1039 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=511, Invalid=2911, Unknown=0, NotChecked=0, Total=3422 [2020-10-27 23:48:07,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5246 states. [2020-10-27 23:48:07,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5246 to 1009. [2020-10-27 23:48:07,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1009 states. [2020-10-27 23:48:07,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1009 states to 1009 states and 1528 transitions. [2020-10-27 23:48:07,354 INFO L78 Accepts]: Start accepts. Automaton has 1009 states and 1528 transitions. Word has length 70 [2020-10-27 23:48:07,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:48:07,355 INFO L481 AbstractCegarLoop]: Abstraction has 1009 states and 1528 transitions. [2020-10-27 23:48:07,355 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-27 23:48:07,355 INFO L276 IsEmpty]: Start isEmpty. Operand 1009 states and 1528 transitions. [2020-10-27 23:48:07,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-27 23:48:07,356 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:48:07,357 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] [2020-10-27 23:48:07,357 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 23:48:07,357 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:48:07,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:48:07,358 INFO L82 PathProgramCache]: Analyzing trace with hash -198363444, now seen corresponding path program 1 times [2020-10-27 23:48:07,358 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:48:07,358 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2106635709] [2020-10-27 23:48:07,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:48:07,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:48:07,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:07,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:07,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:07,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:07,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:07,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:07,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:08,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:08,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:11,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:11,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:12,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:12,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:12,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:48:12,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-27 23:48:12,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-27 23:48:12,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-27 23:48:12,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:48:12,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:48:12,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-10-27 23:48:12,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 23:48:12,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:48:12,674 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-27 23:48:12,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:48:12,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:48:12,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:12,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:48:12,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:48:12,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:48:12,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 23:48:12,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:48:12,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:48:12,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:48:12,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:48:12,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:48:12,721 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 23:48:12,721 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2106635709] [2020-10-27 23:48:12,722 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:48:12,722 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:48:12,722 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880398226] [2020-10-27 23:48:12,723 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:48:12,723 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:48:12,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:48:12,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:48:12,724 INFO L87 Difference]: Start difference. First operand 1009 states and 1528 transitions. Second operand 4 states. [2020-10-27 23:48:12,981 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-27 23:48:13,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:48:13,591 INFO L93 Difference]: Finished difference Result 2144 states and 3300 transitions. [2020-10-27 23:48:13,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:48:13,591 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 70 [2020-10-27 23:48:13,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:48:13,598 INFO L225 Difference]: With dead ends: 2144 [2020-10-27 23:48:13,598 INFO L226 Difference]: Without dead ends: 1399 [2020-10-27 23:48:13,600 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:48:13,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1399 states. [2020-10-27 23:48:13,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1399 to 1396. [2020-10-27 23:48:13,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1396 states. [2020-10-27 23:48:13,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1396 states to 1396 states and 2120 transitions. [2020-10-27 23:48:13,773 INFO L78 Accepts]: Start accepts. Automaton has 1396 states and 2120 transitions. Word has length 70 [2020-10-27 23:48:13,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:48:13,773 INFO L481 AbstractCegarLoop]: Abstraction has 1396 states and 2120 transitions. [2020-10-27 23:48:13,773 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 23:48:13,774 INFO L276 IsEmpty]: Start isEmpty. Operand 1396 states and 2120 transitions. [2020-10-27 23:48:13,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-27 23:48:13,775 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:48:13,775 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] [2020-10-27 23:48:13,775 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 23:48:13,776 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:48:13,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:48:13,777 INFO L82 PathProgramCache]: Analyzing trace with hash -1223800629, now seen corresponding path program 1 times [2020-10-27 23:48:13,777 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:48:13,778 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [464317800] [2020-10-27 23:48:13,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:48:13,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:48:13,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:13,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:13,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:13,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:14,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:14,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:14,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:14,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:15,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:15,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:15,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:15,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:17,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:18,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:48:18,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-27 23:48:18,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-27 23:48:18,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-27 23:48:18,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:48:18,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:48:18,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-27 23:48:18,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 23:48:18,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:48:19,030 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-27 23:48:19,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:48:19,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:48:19,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:19,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:48:19,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:48:19,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:48:19,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 23:48:19,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:48:19,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:48:19,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:48:19,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:48:19,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:48:19,065 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 23:48:19,066 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [464317800] [2020-10-27 23:48:19,066 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:48:19,066 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:48:19,067 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006781971] [2020-10-27 23:48:19,067 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:48:19,067 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:48:19,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:48:19,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:48:19,070 INFO L87 Difference]: Start difference. First operand 1396 states and 2120 transitions. Second operand 4 states. [2020-10-27 23:48:19,561 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-27 23:48:20,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:48:20,106 INFO L93 Difference]: Finished difference Result 3524 states and 5396 transitions. [2020-10-27 23:48:20,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:48:20,107 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 70 [2020-10-27 23:48:20,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:48:20,115 INFO L225 Difference]: With dead ends: 3524 [2020-10-27 23:48:20,116 INFO L226 Difference]: Without dead ends: 2392 [2020-10-27 23:48:20,118 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:48:20,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2392 states. [2020-10-27 23:48:20,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2392 to 2341. [2020-10-27 23:48:20,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2341 states. [2020-10-27 23:48:20,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2341 states to 2341 states and 3536 transitions. [2020-10-27 23:48:20,453 INFO L78 Accepts]: Start accepts. Automaton has 2341 states and 3536 transitions. Word has length 70 [2020-10-27 23:48:20,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:48:20,454 INFO L481 AbstractCegarLoop]: Abstraction has 2341 states and 3536 transitions. [2020-10-27 23:48:20,454 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 23:48:20,454 INFO L276 IsEmpty]: Start isEmpty. Operand 2341 states and 3536 transitions. [2020-10-27 23:48:20,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-27 23:48:20,455 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:48:20,456 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] [2020-10-27 23:48:20,456 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 23:48:20,456 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:48:20,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:48:20,457 INFO L82 PathProgramCache]: Analyzing trace with hash -1354653709, now seen corresponding path program 1 times [2020-10-27 23:48:20,457 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:48:20,457 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [51759868] [2020-10-27 23:48:20,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:48:20,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:48:20,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:20,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:20,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:20,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:20,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:21,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:21,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:21,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:22,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:22,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:22,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:24,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:25,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:48:25,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-27 23:48:25,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-27 23:48:25,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-27 23:48:25,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:48:25,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:48:25,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-27 23:48:25,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-27 23:48:25,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:48:25,722 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-27 23:48:25,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:48:25,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:48:25,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:25,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:48:25,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:48:25,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:48:25,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 23:48:25,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:48:25,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:48:25,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:48:25,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:48:25,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:48:25,753 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 23:48:25,753 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [51759868] [2020-10-27 23:48:25,753 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:48:25,753 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 23:48:25,754 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692540981] [2020-10-27 23:48:25,754 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 23:48:25,754 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:48:25,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 23:48:25,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 23:48:25,755 INFO L87 Difference]: Start difference. First operand 2341 states and 3536 transitions. Second operand 6 states. [2020-10-27 23:48:25,991 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2020-10-27 23:48:26,710 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2020-10-27 23:48:26,952 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2020-10-27 23:48:29,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:48:29,243 INFO L93 Difference]: Finished difference Result 11635 states and 17716 transitions. [2020-10-27 23:48:29,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 23:48:29,244 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 70 [2020-10-27 23:48:29,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:48:29,306 INFO L225 Difference]: With dead ends: 11635 [2020-10-27 23:48:29,307 INFO L226 Difference]: Without dead ends: 10044 [2020-10-27 23:48:29,313 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2020-10-27 23:48:29,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10044 states. [2020-10-27 23:48:29,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10044 to 4369. [2020-10-27 23:48:29,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4369 states. [2020-10-27 23:48:29,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4369 states to 4369 states and 6608 transitions. [2020-10-27 23:48:29,935 INFO L78 Accepts]: Start accepts. Automaton has 4369 states and 6608 transitions. Word has length 70 [2020-10-27 23:48:29,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:48:29,935 INFO L481 AbstractCegarLoop]: Abstraction has 4369 states and 6608 transitions. [2020-10-27 23:48:29,935 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 23:48:29,935 INFO L276 IsEmpty]: Start isEmpty. Operand 4369 states and 6608 transitions. [2020-10-27 23:48:29,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-27 23:48:29,937 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:48:29,937 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] [2020-10-27 23:48:29,938 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 23:48:29,938 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:48:29,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:48:29,938 INFO L82 PathProgramCache]: Analyzing trace with hash 1914668765, now seen corresponding path program 1 times [2020-10-27 23:48:29,939 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:48:29,939 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [507223414] [2020-10-27 23:48:29,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:48:29,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:48:29,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:30,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:30,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:30,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:30,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:30,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:30,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:30,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:33,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:33,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:34,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:34,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:34,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:34,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:34,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:34,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:34,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:34,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:48:34,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-27 23:48:34,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-27 23:48:34,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-27 23:48:34,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:48:34,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 23:48:34,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-27 23:48:34,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-27 23:48:34,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:48:35,270 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 36 [2020-10-27 23:48:35,588 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-27 23:48:35,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:48:35,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:48:35,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:35,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:48:35,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:48:35,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:48:35,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 23:48:35,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:48:35,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:48:35,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:48:35,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:48:35,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:48:35,620 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 23:48:35,620 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [507223414] [2020-10-27 23:48:35,620 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:48:35,620 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-27 23:48:35,621 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596113877] [2020-10-27 23:48:35,621 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 23:48:35,621 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:48:35,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 23:48:35,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-10-27 23:48:35,622 INFO L87 Difference]: Start difference. First operand 4369 states and 6608 transitions. Second operand 11 states. [2020-10-27 23:48:35,938 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-27 23:48:37,640 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-10-27 23:48:43,019 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2020-10-27 23:48:46,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:48:46,330 INFO L93 Difference]: Finished difference Result 43912 states and 65345 transitions. [2020-10-27 23:48:46,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-27 23:48:46,331 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 70 [2020-10-27 23:48:46,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:48:46,437 INFO L225 Difference]: With dead ends: 43912 [2020-10-27 23:48:46,437 INFO L226 Difference]: Without dead ends: 39747 [2020-10-27 23:48:46,456 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 415 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=290, Invalid=1192, Unknown=0, NotChecked=0, Total=1482 [2020-10-27 23:48:46,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39747 states. [2020-10-27 23:48:47,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39747 to 4488. [2020-10-27 23:48:47,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4488 states. [2020-10-27 23:48:47,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4488 states to 4488 states and 6660 transitions. [2020-10-27 23:48:47,545 INFO L78 Accepts]: Start accepts. Automaton has 4488 states and 6660 transitions. Word has length 70 [2020-10-27 23:48:47,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:48:47,545 INFO L481 AbstractCegarLoop]: Abstraction has 4488 states and 6660 transitions. [2020-10-27 23:48:47,545 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 23:48:47,545 INFO L276 IsEmpty]: Start isEmpty. Operand 4488 states and 6660 transitions. [2020-10-27 23:48:47,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-27 23:48:47,547 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:48:47,547 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] [2020-10-27 23:48:47,548 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 23:48:47,548 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:48:47,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:48:47,548 INFO L82 PathProgramCache]: Analyzing trace with hash 1669831943, now seen corresponding path program 1 times [2020-10-27 23:48:47,549 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:48:47,549 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1901204325] [2020-10-27 23:48:47,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:48:47,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:48:47,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:47,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:47,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:47,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:47,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:48,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:48,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:48,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:49,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:49,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:51,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:51,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:51,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:51,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:51,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:52,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:52,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:48:52,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-27 23:48:52,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-27 23:48:52,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-27 23:48:52,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:48:52,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 23:48:52,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-27 23:48:52,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-27 23:48:52,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:48:52,819 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-27 23:48:52,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:48:52,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:48:52,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:52,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:48:52,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:48:52,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:48:52,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 23:48:52,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:48:52,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:48:52,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:48:52,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:48:52,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:48:52,842 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 23:48:52,843 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1901204325] [2020-10-27 23:48:52,843 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:48:52,843 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 23:48:52,843 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24451085] [2020-10-27 23:48:52,844 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 23:48:52,844 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:48:52,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 23:48:52,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-27 23:48:52,845 INFO L87 Difference]: Start difference. First operand 4488 states and 6660 transitions. Second operand 7 states. [2020-10-27 23:48:53,112 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-27 23:48:53,815 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2020-10-27 23:48:54,037 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2020-10-27 23:48:54,391 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-10-27 23:48:54,649 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2020-10-27 23:48:54,883 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-27 23:48:58,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:48:58,021 INFO L93 Difference]: Finished difference Result 20181 states and 30160 transitions. [2020-10-27 23:48:58,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-27 23:48:58,021 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 70 [2020-10-27 23:48:58,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:48:58,051 INFO L225 Difference]: With dead ends: 20181 [2020-10-27 23:48:58,051 INFO L226 Difference]: Without dead ends: 16084 [2020-10-27 23:48:58,065 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2020-10-27 23:48:58,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16084 states. [2020-10-27 23:48:59,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16084 to 7338. [2020-10-27 23:48:59,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7338 states. [2020-10-27 23:48:59,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7338 states to 7338 states and 10905 transitions. [2020-10-27 23:48:59,752 INFO L78 Accepts]: Start accepts. Automaton has 7338 states and 10905 transitions. Word has length 70 [2020-10-27 23:48:59,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:48:59,753 INFO L481 AbstractCegarLoop]: Abstraction has 7338 states and 10905 transitions. [2020-10-27 23:48:59,753 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 23:48:59,753 INFO L276 IsEmpty]: Start isEmpty. Operand 7338 states and 10905 transitions. [2020-10-27 23:48:59,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-27 23:48:59,755 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:48:59,755 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] [2020-10-27 23:48:59,755 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 23:48:59,755 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:48:59,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:48:59,755 INFO L82 PathProgramCache]: Analyzing trace with hash 1123573873, now seen corresponding path program 1 times [2020-10-27 23:48:59,756 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:48:59,756 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1772165562] [2020-10-27 23:48:59,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:48:59,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:48:59,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:59,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:59,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:59,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:00,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:00,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:00,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:00,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:01,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:02,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:02,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:02,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:04,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:49:04,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-27 23:49:04,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-27 23:49:04,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-27 23:49:04,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:49:04,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:49:04,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-27 23:49:04,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-27 23:49:04,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:49:05,021 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-27 23:49:05,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:49:05,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:49:05,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:05,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:49:05,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:49:05,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:49:05,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 23:49:05,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:49:05,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:49:05,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:49:05,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:49:05,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:49:05,045 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 23:49:05,046 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1772165562] [2020-10-27 23:49:05,046 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:49:05,046 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 23:49:05,047 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62099433] [2020-10-27 23:49:05,047 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 23:49:05,047 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:49:05,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 23:49:05,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 23:49:05,048 INFO L87 Difference]: Start difference. First operand 7338 states and 10905 transitions. Second operand 6 states. [2020-10-27 23:49:05,283 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2020-10-27 23:49:06,426 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2020-10-27 23:49:06,716 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2020-10-27 23:49:13,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:49:13,021 INFO L93 Difference]: Finished difference Result 29518 states and 44106 transitions. [2020-10-27 23:49:13,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 23:49:13,021 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 70 [2020-10-27 23:49:13,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:49:13,073 INFO L225 Difference]: With dead ends: 29518 [2020-10-27 23:49:13,074 INFO L226 Difference]: Without dead ends: 27199 [2020-10-27 23:49:13,088 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2020-10-27 23:49:13,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27199 states. [2020-10-27 23:49:15,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27199 to 10750. [2020-10-27 23:49:15,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10750 states. [2020-10-27 23:49:15,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10750 states to 10750 states and 15983 transitions. [2020-10-27 23:49:15,502 INFO L78 Accepts]: Start accepts. Automaton has 10750 states and 15983 transitions. Word has length 70 [2020-10-27 23:49:15,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:49:15,502 INFO L481 AbstractCegarLoop]: Abstraction has 10750 states and 15983 transitions. [2020-10-27 23:49:15,502 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 23:49:15,502 INFO L276 IsEmpty]: Start isEmpty. Operand 10750 states and 15983 transitions. [2020-10-27 23:49:15,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-27 23:49:15,505 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:49:15,505 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] [2020-10-27 23:49:15,505 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 23:49:15,506 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:49:15,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:49:15,506 INFO L82 PathProgramCache]: Analyzing trace with hash 162137122, now seen corresponding path program 1 times [2020-10-27 23:49:15,506 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:49:15,507 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [447039846] [2020-10-27 23:49:15,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:49:15,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:49:15,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:15,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:15,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:15,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:15,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:15,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:15,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:16,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:16,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:20,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:49:20,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-27 23:49:20,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 23:49:20,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-27 23:49:20,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:49:20,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 23:49:20,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 23:49:20,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-27 23:49:20,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:49:20,934 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-27 23:49:20,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:49:20,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:49:20,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:20,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:49:20,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:49:20,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:49:20,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 23:49:20,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:49:20,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:49:20,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:49:20,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:49:20,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:49:20,968 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 23:49:20,969 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [447039846] [2020-10-27 23:49:20,969 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:49:20,969 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 23:49:20,969 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731889597] [2020-10-27 23:49:20,970 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 23:49:20,970 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:49:20,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 23:49:20,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-27 23:49:20,971 INFO L87 Difference]: Start difference. First operand 10750 states and 15983 transitions. Second operand 9 states. [2020-10-27 23:49:21,276 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-27 23:49:22,640 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-27 23:49:22,920 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2020-10-27 23:49:29,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:49:29,872 INFO L93 Difference]: Finished difference Result 37834 states and 56056 transitions. [2020-10-27 23:49:29,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-27 23:49:29,873 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 70 [2020-10-27 23:49:29,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:49:29,917 INFO L225 Difference]: With dead ends: 37834 [2020-10-27 23:49:29,917 INFO L226 Difference]: Without dead ends: 27483 [2020-10-27 23:49:29,941 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=143, Invalid=559, Unknown=0, NotChecked=0, Total=702 [2020-10-27 23:49:29,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27483 states. [2020-10-27 23:49:34,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27483 to 16068. [2020-10-27 23:49:34,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16068 states. [2020-10-27 23:49:34,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16068 states to 16068 states and 23806 transitions. [2020-10-27 23:49:34,215 INFO L78 Accepts]: Start accepts. Automaton has 16068 states and 23806 transitions. Word has length 70 [2020-10-27 23:49:34,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:49:34,215 INFO L481 AbstractCegarLoop]: Abstraction has 16068 states and 23806 transitions. [2020-10-27 23:49:34,215 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 23:49:34,215 INFO L276 IsEmpty]: Start isEmpty. Operand 16068 states and 23806 transitions. [2020-10-27 23:49:34,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-27 23:49:34,218 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:49:34,219 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] [2020-10-27 23:49:34,219 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 23:49:34,219 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:49:34,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:49:34,219 INFO L82 PathProgramCache]: Analyzing trace with hash -2113559392, now seen corresponding path program 1 times [2020-10-27 23:49:34,220 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:49:34,220 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [30075520] [2020-10-27 23:49:34,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:49:34,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:49:34,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:34,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:34,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:34,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:34,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:34,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:35,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:35,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:35,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:35,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:36,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:39,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:49:39,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-27 23:49:39,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-27 23:49:39,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 23:49:39,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:49:39,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 23:49:39,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-27 23:49:39,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-27 23:49:39,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:49:39,550 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 29 [2020-10-27 23:49:39,835 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-27 23:49:39,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:49:39,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:49:39,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:39,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:49:39,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:49:39,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:49:39,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 23:49:39,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:49:39,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:49:39,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:49:39,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:49:39,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:49:39,862 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 23:49:39,862 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [30075520] [2020-10-27 23:49:39,862 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:49:39,863 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-27 23:49:39,863 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71098243] [2020-10-27 23:49:39,863 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 23:49:39,863 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:49:39,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 23:49:39,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-27 23:49:39,864 INFO L87 Difference]: Start difference. First operand 16068 states and 23806 transitions. Second operand 11 states. [2020-10-27 23:49:40,258 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2020-10-27 23:49:41,463 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2020-10-27 23:49:48,437 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2020-10-27 23:49:58,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:49:58,393 INFO L93 Difference]: Finished difference Result 83460 states and 123434 transitions. [2020-10-27 23:49:58,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-27 23:49:58,394 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 70 [2020-10-27 23:49:58,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:49:58,487 INFO L225 Difference]: With dead ends: 83460 [2020-10-27 23:49:58,487 INFO L226 Difference]: Without dead ends: 67905 [2020-10-27 23:49:58,527 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=177, Invalid=579, Unknown=0, NotChecked=0, Total=756 [2020-10-27 23:49:58,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67905 states. [2020-10-27 23:50:03,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67905 to 15914. [2020-10-27 23:50:03,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15914 states. [2020-10-27 23:50:03,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15914 states to 15914 states and 23332 transitions. [2020-10-27 23:50:03,102 INFO L78 Accepts]: Start accepts. Automaton has 15914 states and 23332 transitions. Word has length 70 [2020-10-27 23:50:03,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:50:03,102 INFO L481 AbstractCegarLoop]: Abstraction has 15914 states and 23332 transitions. [2020-10-27 23:50:03,102 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 23:50:03,102 INFO L276 IsEmpty]: Start isEmpty. Operand 15914 states and 23332 transitions. [2020-10-27 23:50:03,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-27 23:50:03,105 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:50:03,105 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:50:03,105 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 23:50:03,106 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:50:03,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:50:03,106 INFO L82 PathProgramCache]: Analyzing trace with hash 1219971153, now seen corresponding path program 1 times [2020-10-27 23:50:03,106 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:50:03,106 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [674047096] [2020-10-27 23:50:03,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:50:03,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:50:03,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:03,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:03,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:03,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:03,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:03,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:04,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:06,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:06,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:06,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:06,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:06,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:07,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:07,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:08,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:50:08,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-27 23:50:08,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-27 23:50:08,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-27 23:50:08,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:50:08,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 23:50:08,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-27 23:50:08,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-27 23:50:08,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:50:08,477 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 28 [2020-10-27 23:50:08,761 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-27 23:50:08,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:50:08,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:50:08,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:08,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:50:08,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:50:08,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:50:08,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 23:50:08,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:50:08,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:50:08,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:50:08,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:50:08,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:50:08,790 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 23:50:08,790 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [674047096] [2020-10-27 23:50:08,790 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:50:08,791 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-27 23:50:08,791 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814478234] [2020-10-27 23:50:08,791 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 23:50:08,791 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:50:08,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 23:50:08,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-27 23:50:08,792 INFO L87 Difference]: Start difference. First operand 15914 states and 23332 transitions. Second operand 11 states. [2020-10-27 23:50:09,113 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 23:50:10,926 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2020-10-27 23:50:26,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:50:26,716 INFO L93 Difference]: Finished difference Result 64527 states and 94092 transitions. [2020-10-27 23:50:26,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-27 23:50:26,716 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 70 [2020-10-27 23:50:26,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:50:26,788 INFO L225 Difference]: With dead ends: 64527 [2020-10-27 23:50:26,788 INFO L226 Difference]: Without dead ends: 58418 [2020-10-27 23:50:26,808 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 302 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=238, Invalid=1022, Unknown=0, NotChecked=0, Total=1260 [2020-10-27 23:50:26,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58418 states. [2020-10-27 23:50:31,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58418 to 16071. [2020-10-27 23:50:31,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16071 states. [2020-10-27 23:50:31,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16071 states to 16071 states and 23551 transitions. [2020-10-27 23:50:31,199 INFO L78 Accepts]: Start accepts. Automaton has 16071 states and 23551 transitions. Word has length 70 [2020-10-27 23:50:31,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:50:31,200 INFO L481 AbstractCegarLoop]: Abstraction has 16071 states and 23551 transitions. [2020-10-27 23:50:31,200 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 23:50:31,200 INFO L276 IsEmpty]: Start isEmpty. Operand 16071 states and 23551 transitions. [2020-10-27 23:50:31,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-27 23:50:31,202 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:50:31,202 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] [2020-10-27 23:50:31,203 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-27 23:50:31,203 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:50:31,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:50:31,203 INFO L82 PathProgramCache]: Analyzing trace with hash 264040626, now seen corresponding path program 1 times [2020-10-27 23:50:31,203 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:50:31,203 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2096585241] [2020-10-27 23:50:31,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:50:31,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:50:31,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:31,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:31,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:31,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:31,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:31,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:33,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:33,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:33,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:33,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:33,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:33,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:33,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:35,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:36,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:50:36,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-27 23:50:36,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-27 23:50:36,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-27 23:50:36,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:50:36,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:50:36,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-27 23:50:36,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-27 23:50:36,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:50:36,467 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-27 23:50:36,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:50:36,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:50:36,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:36,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:50:36,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:50:36,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:50:36,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 23:50:36,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:50:36,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:50:36,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:50:36,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:50:36,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:50:36,494 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 23:50:36,495 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2096585241] [2020-10-27 23:50:36,495 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:50:36,495 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 23:50:36,495 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070825617] [2020-10-27 23:50:36,496 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 23:50:36,496 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:50:36,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 23:50:36,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 23:50:36,497 INFO L87 Difference]: Start difference. First operand 16071 states and 23551 transitions. Second operand 6 states. [2020-10-27 23:50:36,731 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2020-10-27 23:50:37,980 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2020-10-27 23:50:38,204 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2020-10-27 23:50:48,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:50:48,297 INFO L93 Difference]: Finished difference Result 42989 states and 63214 transitions. [2020-10-27 23:50:48,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 23:50:48,297 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 71 [2020-10-27 23:50:48,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:50:48,342 INFO L225 Difference]: With dead ends: 42989 [2020-10-27 23:50:48,342 INFO L226 Difference]: Without dead ends: 38474 [2020-10-27 23:50:48,354 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2020-10-27 23:50:48,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38474 states.