/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.8.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 00:03:08,383 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 00:03:08,386 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 00:03:08,441 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 00:03:08,442 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 00:03:08,449 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 00:03:08,451 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 00:03:08,456 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 00:03:08,459 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 00:03:08,465 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 00:03:08,467 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 00:03:08,468 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 00:03:08,469 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 00:03:08,472 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 00:03:08,475 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 00:03:08,478 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 00:03:08,480 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 00:03:08,495 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 00:03:08,498 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 00:03:08,505 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 00:03:08,508 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 00:03:08,513 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 00:03:08,515 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 00:03:08,517 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 00:03:08,525 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 00:03:08,526 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 00:03:08,526 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 00:03:08,529 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 00:03:08,529 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 00:03:08,530 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 00:03:08,531 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 00:03:08,532 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 00:03:08,534 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 00:03:08,535 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 00:03:08,536 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 00:03:08,536 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 00:03:08,537 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 00:03:08,537 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 00:03:08,538 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 00:03:08,539 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 00:03:08,539 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 00:03:08,547 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-28 00:03:08,595 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 00:03:08,595 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 00:03:08,596 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 00:03:08,597 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 00:03:08,597 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 00:03:08,597 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 00:03:08,597 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 00:03:08,598 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 00:03:08,598 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 00:03:08,598 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 00:03:08,598 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 00:03:08,598 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 00:03:08,599 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 00:03:08,599 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 00:03:08,599 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 00:03:08,599 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 00:03:08,600 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 00:03:08,600 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 00:03:08,600 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 00:03:08,600 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 00:03:08,600 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 00:03:08,601 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 00:03:08,601 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 00:03:08,601 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 00:03:08,601 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 00:03:08,602 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 00:03:08,602 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 00:03:08,602 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 00:03:08,602 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 00:03:08,602 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-28 00:03:08,969 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 00:03:08,997 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 00:03:09,000 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 00:03:09,002 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 00:03:09,002 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 00:03:09,003 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.8.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-28 00:03:09,085 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/965d5fa21/e2e171b505854fce86da7ab69058cc37/FLAG46f8b4cc9 [2020-10-28 00:03:09,780 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 00:03:09,780 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.8.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-28 00:03:09,797 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/965d5fa21/e2e171b505854fce86da7ab69058cc37/FLAG46f8b4cc9 [2020-10-28 00:03:10,046 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/965d5fa21/e2e171b505854fce86da7ab69058cc37 [2020-10-28 00:03:10,052 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 00:03:10,061 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 00:03:10,065 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 00:03:10,066 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 00:03:10,070 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 00:03:10,071 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:03:10" (1/1) ... [2020-10-28 00:03:10,074 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37ff180f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:03:10, skipping insertion in model container [2020-10-28 00:03:10,075 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:03:10" (1/1) ... [2020-10-28 00:03:10,083 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 00:03:10,141 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 00:03:10,508 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 00:03:10,541 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 00:03:10,687 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 00:03:10,725 INFO L208 MainTranslator]: Completed translation [2020-10-28 00:03:10,726 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:03:10 WrapperNode [2020-10-28 00:03:10,726 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 00:03:10,727 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 00:03:10,728 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 00:03:10,728 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 00:03:10,743 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:03:10" (1/1) ... [2020-10-28 00:03:10,743 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:03:10" (1/1) ... [2020-10-28 00:03:10,760 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:03:10" (1/1) ... [2020-10-28 00:03:10,760 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:03:10" (1/1) ... [2020-10-28 00:03:10,785 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:03:10" (1/1) ... [2020-10-28 00:03:10,802 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:03:10" (1/1) ... [2020-10-28 00:03:10,813 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:03:10" (1/1) ... [2020-10-28 00:03:10,826 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 00:03:10,827 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 00:03:10,827 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 00:03:10,827 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 00:03:10,832 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:03:10" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 00:03:10,926 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 00:03:10,926 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 00:03:10,926 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 00:03:10,926 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-28 00:03:10,927 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 00:03:10,927 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 00:03:10,927 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 00:03:10,927 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 00:03:10,927 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 00:03:10,927 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-28 00:03:10,928 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-28 00:03:10,928 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-28 00:03:10,928 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-28 00:03:10,928 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-28 00:03:10,928 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-28 00:03:10,928 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-28 00:03:10,928 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-28 00:03:10,929 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-28 00:03:10,929 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-28 00:03:10,929 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-28 00:03:10,929 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-28 00:03:10,929 INFO L130 BoogieDeclarations]: Found specification of procedure node6 [2020-10-28 00:03:10,929 INFO L130 BoogieDeclarations]: Found specification of procedure node7 [2020-10-28 00:03:10,929 INFO L130 BoogieDeclarations]: Found specification of procedure node8 [2020-10-28 00:03:10,930 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-28 00:03:10,930 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-28 00:03:10,930 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 00:03:10,930 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 00:03:10,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 00:03:10,931 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 00:03:10,931 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 00:03:10,931 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 00:03:10,931 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 00:03:12,532 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 00:03:12,532 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-28 00:03:12,534 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:03:12 BoogieIcfgContainer [2020-10-28 00:03:12,534 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 00:03:12,536 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 00:03:12,536 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 00:03:12,540 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 00:03:12,540 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 12:03:10" (1/3) ... [2020-10-28 00:03:12,542 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20540716 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:03:12, skipping insertion in model container [2020-10-28 00:03:12,543 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:03:10" (2/3) ... [2020-10-28 00:03:12,543 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20540716 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:03:12, skipping insertion in model container [2020-10-28 00:03:12,543 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:03:12" (3/3) ... [2020-10-28 00:03:12,548 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.8.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-28 00:03:12,560 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 00:03:12,566 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 00:03:12,580 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 00:03:12,608 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 00:03:12,608 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 00:03:12,609 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 00:03:12,609 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 00:03:12,609 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 00:03:12,609 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 00:03:12,609 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 00:03:12,609 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 00:03:12,632 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states. [2020-10-28 00:03:12,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-10-28 00:03:12,646 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:03:12,648 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:03:12,648 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:03:12,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:03:12,654 INFO L82 PathProgramCache]: Analyzing trace with hash 1281272988, now seen corresponding path program 1 times [2020-10-28 00:03:12,666 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:03:12,667 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [607788219] [2020-10-28 00:03:12,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:03:13,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:03:13,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:03:13,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:03:13,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:03:13,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:03:14,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:03:14,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:03:14,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:03:15,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:03:15,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:03:17,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:03:17,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:03:17,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:03:17,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:03:18,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:03:18,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-28 00:03:18,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-28 00:03:18,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-10-28 00:03:18,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:03:18,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:03:18,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 98 [2020-10-28 00:03:18,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-28 00:03:18,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 00:03:18,796 WARN L193 SmtUtils]: Spent 453.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-28 00:03:18,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:03:18,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:03:18,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:03:18,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:03:18,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:03:18,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:03:18,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 00:03:18,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:03:18,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:03:18,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:03:18,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:03:18,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:03:18,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:03:18,908 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [607788219] [2020-10-28 00:03:18,910 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:03:18,911 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:03:18,911 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099125789] [2020-10-28 00:03:18,917 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:03:18,918 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:03:18,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:03:18,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:03:18,935 INFO L87 Difference]: Start difference. First operand 240 states. Second operand 4 states. [2020-10-28 00:03:19,478 WARN L193 SmtUtils]: Spent 453.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-10-28 00:03:21,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:03:21,454 INFO L93 Difference]: Finished difference Result 459 states and 763 transitions. [2020-10-28 00:03:21,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:03:21,456 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 129 [2020-10-28 00:03:21,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:03:21,472 INFO L225 Difference]: With dead ends: 459 [2020-10-28 00:03:21,473 INFO L226 Difference]: Without dead ends: 352 [2020-10-28 00:03:21,477 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:03:21,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2020-10-28 00:03:21,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 349. [2020-10-28 00:03:21,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 349 states. [2020-10-28 00:03:21,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 500 transitions. [2020-10-28 00:03:21,584 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 500 transitions. Word has length 129 [2020-10-28 00:03:21,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:03:21,585 INFO L481 AbstractCegarLoop]: Abstraction has 349 states and 500 transitions. [2020-10-28 00:03:21,586 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:03:21,586 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 500 transitions. [2020-10-28 00:03:21,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-10-28 00:03:21,590 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:03:21,590 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:03:21,590 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 00:03:21,591 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:03:21,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:03:21,591 INFO L82 PathProgramCache]: Analyzing trace with hash 1408586815, now seen corresponding path program 1 times [2020-10-28 00:03:21,592 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:03:21,592 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [300462531] [2020-10-28 00:03:21,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:03:21,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:03:21,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:03:21,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:03:21,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:03:21,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:03:22,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:03:22,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:03:22,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:03:22,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:03:22,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:03:22,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:03:23,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:03:23,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:03:23,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:03:26,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:03:26,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-28 00:03:26,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-28 00:03:26,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-28 00:03:26,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:03:26,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 00:03:26,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-28 00:03:26,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-28 00:03:26,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:03:27,285 WARN L193 SmtUtils]: Spent 478.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-28 00:03:27,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:03:27,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:03:27,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:03:27,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:03:27,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:03:27,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:03:27,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-28 00:03:27,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:03:27,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:03:27,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:03:27,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:03:27,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:03:27,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:03:27,373 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [300462531] [2020-10-28 00:03:27,373 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:03:27,374 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-28 00:03:27,374 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28539054] [2020-10-28 00:03:27,376 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 00:03:27,376 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:03:27,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 00:03:27,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-28 00:03:27,377 INFO L87 Difference]: Start difference. First operand 349 states and 500 transitions. Second operand 7 states. [2020-10-28 00:03:27,970 WARN L193 SmtUtils]: Spent 532.00 ms on a formula simplification that was a NOOP. DAG size: 227 [2020-10-28 00:03:29,665 WARN L193 SmtUtils]: Spent 451.00 ms on a formula simplification that was a NOOP. DAG size: 227 [2020-10-28 00:03:30,169 WARN L193 SmtUtils]: Spent 453.00 ms on a formula simplification that was a NOOP. DAG size: 229 [2020-10-28 00:03:30,668 WARN L193 SmtUtils]: Spent 445.00 ms on a formula simplification that was a NOOP. DAG size: 224 [2020-10-28 00:03:31,108 WARN L193 SmtUtils]: Spent 420.00 ms on a formula simplification that was a NOOP. DAG size: 225 [2020-10-28 00:03:32,742 WARN L193 SmtUtils]: Spent 411.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-10-28 00:03:33,208 WARN L193 SmtUtils]: Spent 441.00 ms on a formula simplification that was a NOOP. DAG size: 227 [2020-10-28 00:03:33,941 WARN L193 SmtUtils]: Spent 434.00 ms on a formula simplification that was a NOOP. DAG size: 228 [2020-10-28 00:03:34,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:03:34,032 INFO L93 Difference]: Finished difference Result 1980 states and 3070 transitions. [2020-10-28 00:03:34,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-28 00:03:34,035 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 131 [2020-10-28 00:03:34,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:03:34,050 INFO L225 Difference]: With dead ends: 1980 [2020-10-28 00:03:34,051 INFO L226 Difference]: Without dead ends: 1722 [2020-10-28 00:03:34,057 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2020-10-28 00:03:34,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1722 states. [2020-10-28 00:03:34,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1722 to 799. [2020-10-28 00:03:34,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 799 states. [2020-10-28 00:03:34,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 799 states to 799 states and 1207 transitions. [2020-10-28 00:03:34,147 INFO L78 Accepts]: Start accepts. Automaton has 799 states and 1207 transitions. Word has length 131 [2020-10-28 00:03:34,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:03:34,148 INFO L481 AbstractCegarLoop]: Abstraction has 799 states and 1207 transitions. [2020-10-28 00:03:34,148 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 00:03:34,148 INFO L276 IsEmpty]: Start isEmpty. Operand 799 states and 1207 transitions. [2020-10-28 00:03:34,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-28 00:03:34,152 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:03:34,153 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:03:34,153 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 00:03:34,153 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:03:34,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:03:34,154 INFO L82 PathProgramCache]: Analyzing trace with hash 2074145086, now seen corresponding path program 1 times [2020-10-28 00:03:34,154 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:03:34,155 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [391243476] [2020-10-28 00:03:34,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:03:34,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:03:34,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:03:34,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:03:34,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:03:34,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:03:34,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:03:34,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:03:34,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:03:35,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:03:35,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:03:39,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:03:39,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-28 00:03:39,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-28 00:03:39,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-28 00:03:39,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:03:39,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 00:03:39,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-28 00:03:39,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-28 00:03:39,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:03:39,867 WARN L193 SmtUtils]: Spent 504.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-28 00:03:39,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:03:39,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:03:39,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:03:39,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:03:39,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:03:39,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:03:39,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 00:03:39,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:03:39,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:03:39,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:03:39,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:03:39,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:03:39,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:03:39,946 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [391243476] [2020-10-28 00:03:39,946 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:03:39,947 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-28 00:03:39,947 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101365697] [2020-10-28 00:03:39,948 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 00:03:39,948 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:03:39,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 00:03:39,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-28 00:03:39,949 INFO L87 Difference]: Start difference. First operand 799 states and 1207 transitions. Second operand 7 states. [2020-10-28 00:03:40,413 WARN L193 SmtUtils]: Spent 405.00 ms on a formula simplification that was a NOOP. DAG size: 227 [2020-10-28 00:03:41,761 WARN L193 SmtUtils]: Spent 429.00 ms on a formula simplification that was a NOOP. DAG size: 229 [2020-10-28 00:03:42,202 WARN L193 SmtUtils]: Spent 390.00 ms on a formula simplification that was a NOOP. DAG size: 224 [2020-10-28 00:03:42,623 WARN L193 SmtUtils]: Spent 394.00 ms on a formula simplification that was a NOOP. DAG size: 225 [2020-10-28 00:03:43,067 WARN L193 SmtUtils]: Spent 410.00 ms on a formula simplification that was a NOOP. DAG size: 227 [2020-10-28 00:03:44,372 WARN L193 SmtUtils]: Spent 377.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-10-28 00:03:44,805 WARN L193 SmtUtils]: Spent 416.00 ms on a formula simplification that was a NOOP. DAG size: 227 [2020-10-28 00:03:45,571 WARN L193 SmtUtils]: Spent 416.00 ms on a formula simplification that was a NOOP. DAG size: 228 [2020-10-28 00:03:45,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:03:45,650 INFO L93 Difference]: Finished difference Result 4108 states and 6467 transitions. [2020-10-28 00:03:45,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-28 00:03:45,650 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 132 [2020-10-28 00:03:45,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:03:45,671 INFO L225 Difference]: With dead ends: 4108 [2020-10-28 00:03:45,671 INFO L226 Difference]: Without dead ends: 3484 [2020-10-28 00:03:45,675 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2020-10-28 00:03:45,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3484 states. [2020-10-28 00:03:45,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3484 to 1201. [2020-10-28 00:03:45,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1201 states. [2020-10-28 00:03:45,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1201 states to 1201 states and 1846 transitions. [2020-10-28 00:03:45,780 INFO L78 Accepts]: Start accepts. Automaton has 1201 states and 1846 transitions. Word has length 132 [2020-10-28 00:03:45,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:03:45,781 INFO L481 AbstractCegarLoop]: Abstraction has 1201 states and 1846 transitions. [2020-10-28 00:03:45,781 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 00:03:45,781 INFO L276 IsEmpty]: Start isEmpty. Operand 1201 states and 1846 transitions. [2020-10-28 00:03:45,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-28 00:03:45,785 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:03:45,785 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:03:45,785 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 00:03:45,785 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:03:45,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:03:45,786 INFO L82 PathProgramCache]: Analyzing trace with hash 517492399, now seen corresponding path program 1 times [2020-10-28 00:03:45,786 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:03:45,787 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1715455173] [2020-10-28 00:03:45,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:03:45,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:03:45,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:03:45,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:03:46,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:03:46,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:03:46,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:03:46,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:03:46,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:03:46,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:03:47,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:03:50,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:03:50,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-28 00:03:50,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-28 00:03:50,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-28 00:03:50,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:03:50,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 00:03:50,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-28 00:03:50,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-28 00:03:50,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:03:51,495 WARN L193 SmtUtils]: Spent 482.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-28 00:03:51,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:03:51,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:03:51,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:03:51,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:03:51,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:03:51,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:03:51,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-28 00:03:51,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:03:51,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:03:51,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:03:51,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:03:51,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:03:51,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:03:51,618 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1715455173] [2020-10-28 00:03:51,618 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:03:51,619 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-28 00:03:51,619 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316396271] [2020-10-28 00:03:51,619 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 00:03:51,620 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:03:51,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 00:03:51,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-28 00:03:51,621 INFO L87 Difference]: Start difference. First operand 1201 states and 1846 transitions. Second operand 7 states. [2020-10-28 00:03:52,077 WARN L193 SmtUtils]: Spent 394.00 ms on a formula simplification that was a NOOP. DAG size: 227 [2020-10-28 00:03:53,491 WARN L193 SmtUtils]: Spent 432.00 ms on a formula simplification that was a NOOP. DAG size: 229 [2020-10-28 00:03:53,970 WARN L193 SmtUtils]: Spent 449.00 ms on a formula simplification that was a NOOP. DAG size: 227 [2020-10-28 00:03:54,411 WARN L193 SmtUtils]: Spent 415.00 ms on a formula simplification that was a NOOP. DAG size: 224 [2020-10-28 00:03:54,866 WARN L193 SmtUtils]: Spent 418.00 ms on a formula simplification that was a NOOP. DAG size: 225 [2020-10-28 00:03:56,148 WARN L193 SmtUtils]: Spent 373.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-10-28 00:03:56,592 WARN L193 SmtUtils]: Spent 415.00 ms on a formula simplification that was a NOOP. DAG size: 227 [2020-10-28 00:03:57,303 WARN L193 SmtUtils]: Spent 425.00 ms on a formula simplification that was a NOOP. DAG size: 228 [2020-10-28 00:03:57,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:03:57,379 INFO L93 Difference]: Finished difference Result 4811 states and 7551 transitions. [2020-10-28 00:03:57,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-28 00:03:57,379 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 132 [2020-10-28 00:03:57,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:03:57,401 INFO L225 Difference]: With dead ends: 4811 [2020-10-28 00:03:57,401 INFO L226 Difference]: Without dead ends: 4193 [2020-10-28 00:03:57,404 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2020-10-28 00:03:57,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4193 states. [2020-10-28 00:03:57,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4193 to 1840. [2020-10-28 00:03:57,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1840 states. [2020-10-28 00:03:57,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1840 states to 1840 states and 2842 transitions. [2020-10-28 00:03:57,542 INFO L78 Accepts]: Start accepts. Automaton has 1840 states and 2842 transitions. Word has length 132 [2020-10-28 00:03:57,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:03:57,543 INFO L481 AbstractCegarLoop]: Abstraction has 1840 states and 2842 transitions. [2020-10-28 00:03:57,543 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 00:03:57,543 INFO L276 IsEmpty]: Start isEmpty. Operand 1840 states and 2842 transitions. [2020-10-28 00:03:57,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-10-28 00:03:57,546 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:03:57,546 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:03:57,546 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 00:03:57,546 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:03:57,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:03:57,547 INFO L82 PathProgramCache]: Analyzing trace with hash -325037680, now seen corresponding path program 1 times [2020-10-28 00:03:57,547 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:03:57,547 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [523118637] [2020-10-28 00:03:57,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:03:57,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:03:57,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:03:57,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:03:57,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:03:57,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:03:57,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:03:58,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:03:58,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:03:58,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:03:59,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:03:59,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:04:00,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:04:00,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:04:02,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:04:02,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-28 00:04:02,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-28 00:04:02,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5040 [2020-10-28 00:04:02,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:04:02,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 00:04:02,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-28 00:04:02,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-28 00:04:02,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:04:03,159 WARN L193 SmtUtils]: Spent 398.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-28 00:04:03,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:04:03,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:04:03,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:04:03,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:04:03,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:04:03,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:04:03,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 00:04:03,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:04:03,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:04:03,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:04:03,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:04:03,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:04:03,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:04:03,228 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [523118637] [2020-10-28 00:04:03,228 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:04:03,228 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-28 00:04:03,229 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117960254] [2020-10-28 00:04:03,229 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 00:04:03,229 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:04:03,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 00:04:03,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-28 00:04:03,230 INFO L87 Difference]: Start difference. First operand 1840 states and 2842 transitions. Second operand 7 states. [2020-10-28 00:04:03,719 WARN L193 SmtUtils]: Spent 433.00 ms on a formula simplification that was a NOOP. DAG size: 227 [2020-10-28 00:04:05,102 WARN L193 SmtUtils]: Spent 436.00 ms on a formula simplification that was a NOOP. DAG size: 229 [2020-10-28 00:04:05,551 WARN L193 SmtUtils]: Spent 426.00 ms on a formula simplification that was a NOOP. DAG size: 227 [2020-10-28 00:04:06,001 WARN L193 SmtUtils]: Spent 422.00 ms on a formula simplification that was a NOOP. DAG size: 224 [2020-10-28 00:04:06,442 WARN L193 SmtUtils]: Spent 406.00 ms on a formula simplification that was a NOOP. DAG size: 225 [2020-10-28 00:04:07,851 WARN L193 SmtUtils]: Spent 416.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-10-28 00:04:08,316 WARN L193 SmtUtils]: Spent 445.00 ms on a formula simplification that was a NOOP. DAG size: 227 [2020-10-28 00:04:09,157 WARN L193 SmtUtils]: Spent 441.00 ms on a formula simplification that was a NOOP. DAG size: 228 [2020-10-28 00:04:09,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:04:09,297 INFO L93 Difference]: Finished difference Result 13511 states and 21290 transitions. [2020-10-28 00:04:09,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-28 00:04:09,298 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 133 [2020-10-28 00:04:09,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:04:09,357 INFO L225 Difference]: With dead ends: 13511 [2020-10-28 00:04:09,357 INFO L226 Difference]: Without dead ends: 11797 [2020-10-28 00:04:09,365 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2020-10-28 00:04:09,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11797 states. [2020-10-28 00:04:09,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11797 to 4916. [2020-10-28 00:04:09,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4916 states. [2020-10-28 00:04:09,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4916 states to 4916 states and 7669 transitions. [2020-10-28 00:04:09,784 INFO L78 Accepts]: Start accepts. Automaton has 4916 states and 7669 transitions. Word has length 133 [2020-10-28 00:04:09,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:04:09,785 INFO L481 AbstractCegarLoop]: Abstraction has 4916 states and 7669 transitions. [2020-10-28 00:04:09,785 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 00:04:09,785 INFO L276 IsEmpty]: Start isEmpty. Operand 4916 states and 7669 transitions. [2020-10-28 00:04:09,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-28 00:04:09,790 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:04:09,790 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:04:09,791 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 00:04:09,791 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:04:09,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:04:09,791 INFO L82 PathProgramCache]: Analyzing trace with hash 1110864222, now seen corresponding path program 1 times [2020-10-28 00:04:09,792 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:04:09,792 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [279826071] [2020-10-28 00:04:09,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:04:09,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:04:09,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:04:09,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:04:09,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:04:10,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:04:10,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:04:10,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:04:10,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:04:11,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:04:13,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:04:13,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:04:13,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:04:14,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:04:14,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-28 00:04:14,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-28 00:04:14,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-28 00:04:14,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:04:14,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 00:04:14,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-28 00:04:14,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-28 00:04:14,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:04:15,351 WARN L193 SmtUtils]: Spent 415.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-28 00:04:15,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:04:15,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:04:15,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:04:15,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:04:15,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:04:15,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:04:15,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 00:04:15,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:04:15,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:04:15,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:04:15,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:04:15,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:04:15,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:04:15,414 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [279826071] [2020-10-28 00:04:15,415 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:04:15,415 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-28 00:04:15,415 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796011338] [2020-10-28 00:04:15,416 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 00:04:15,416 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:04:15,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 00:04:15,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-28 00:04:15,417 INFO L87 Difference]: Start difference. First operand 4916 states and 7669 transitions. Second operand 7 states. [2020-10-28 00:04:15,879 WARN L193 SmtUtils]: Spent 396.00 ms on a formula simplification that was a NOOP. DAG size: 227 [2020-10-28 00:04:17,272 WARN L193 SmtUtils]: Spent 429.00 ms on a formula simplification that was a NOOP. DAG size: 229 [2020-10-28 00:04:17,769 WARN L193 SmtUtils]: Spent 459.00 ms on a formula simplification that was a NOOP. DAG size: 227 [2020-10-28 00:04:18,220 WARN L193 SmtUtils]: Spent 413.00 ms on a formula simplification that was a NOOP. DAG size: 224 [2020-10-28 00:04:18,634 WARN L193 SmtUtils]: Spent 396.00 ms on a formula simplification that was a NOOP. DAG size: 225 [2020-10-28 00:04:20,373 WARN L193 SmtUtils]: Spent 412.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-10-28 00:04:20,809 WARN L193 SmtUtils]: Spent 416.00 ms on a formula simplification that was a NOOP. DAG size: 227 [2020-10-28 00:04:21,704 WARN L193 SmtUtils]: Spent 420.00 ms on a formula simplification that was a NOOP. DAG size: 228 [2020-10-28 00:04:21,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:04:21,789 INFO L93 Difference]: Finished difference Result 23331 states and 36665 transitions. [2020-10-28 00:04:21,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-28 00:04:21,790 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 134 [2020-10-28 00:04:21,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:04:21,857 INFO L225 Difference]: With dead ends: 23331 [2020-10-28 00:04:21,858 INFO L226 Difference]: Without dead ends: 20477 [2020-10-28 00:04:21,872 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2020-10-28 00:04:21,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20477 states. [2020-10-28 00:04:22,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20477 to 9384. [2020-10-28 00:04:22,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9384 states. [2020-10-28 00:04:22,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9384 states to 9384 states and 14642 transitions. [2020-10-28 00:04:22,800 INFO L78 Accepts]: Start accepts. Automaton has 9384 states and 14642 transitions. Word has length 134 [2020-10-28 00:04:22,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:04:22,800 INFO L481 AbstractCegarLoop]: Abstraction has 9384 states and 14642 transitions. [2020-10-28 00:04:22,800 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 00:04:22,800 INFO L276 IsEmpty]: Start isEmpty. Operand 9384 states and 14642 transitions. [2020-10-28 00:04:22,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-28 00:04:22,808 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:04:22,808 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:04:22,809 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 00:04:22,809 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:04:22,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:04:22,809 INFO L82 PathProgramCache]: Analyzing trace with hash -1532646355, now seen corresponding path program 1 times [2020-10-28 00:04:22,810 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:04:22,810 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1288287453] [2020-10-28 00:04:22,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:04:22,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:04:22,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:04:22,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:04:22,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:04:23,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:04:23,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:04:23,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:04:23,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:04:23,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:04:25,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:04:25,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:04:25,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:04:27,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:04:27,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:04:27,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-28 00:04:27,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-28 00:04:27,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-28 00:04:27,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:04:27,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 00:04:27,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-28 00:04:27,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-28 00:04:27,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 51 [2020-10-28 00:04:28,384 WARN L193 SmtUtils]: Spent 404.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-28 00:04:28,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:04:28,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:04:28,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:04:28,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:04:28,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:04:28,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:04:28,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 00:04:28,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:04:28,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:04:28,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:04:28,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:04:28,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:04:28,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:04:28,443 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1288287453] [2020-10-28 00:04:28,443 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:04:28,443 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-28 00:04:28,444 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014815275] [2020-10-28 00:04:28,444 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 00:04:28,444 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:04:28,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 00:04:28,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-28 00:04:28,445 INFO L87 Difference]: Start difference. First operand 9384 states and 14642 transitions. Second operand 7 states. [2020-10-28 00:04:28,936 WARN L193 SmtUtils]: Spent 430.00 ms on a formula simplification that was a NOOP. DAG size: 227 [2020-10-28 00:04:30,402 WARN L193 SmtUtils]: Spent 439.00 ms on a formula simplification that was a NOOP. DAG size: 229 [2020-10-28 00:04:30,853 WARN L193 SmtUtils]: Spent 425.00 ms on a formula simplification that was a NOOP. DAG size: 227 [2020-10-28 00:04:31,288 WARN L193 SmtUtils]: Spent 410.00 ms on a formula simplification that was a NOOP. DAG size: 224 [2020-10-28 00:04:31,759 WARN L193 SmtUtils]: Spent 437.00 ms on a formula simplification that was a NOOP. DAG size: 225 [2020-10-28 00:04:33,545 WARN L193 SmtUtils]: Spent 409.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-10-28 00:04:34,051 WARN L193 SmtUtils]: Spent 484.00 ms on a formula simplification that was a NOOP. DAG size: 227 [2020-10-28 00:04:35,089 WARN L193 SmtUtils]: Spent 422.00 ms on a formula simplification that was a NOOP. DAG size: 228 [2020-10-28 00:04:35,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:04:35,277 INFO L93 Difference]: Finished difference Result 28627 states and 44889 transitions. [2020-10-28 00:04:35,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-28 00:04:35,277 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 134 [2020-10-28 00:04:35,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:04:35,337 INFO L225 Difference]: With dead ends: 28627 [2020-10-28 00:04:35,337 INFO L226 Difference]: Without dead ends: 25777 [2020-10-28 00:04:35,349 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2020-10-28 00:04:35,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25777 states. [2020-10-28 00:04:36,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25777 to 12170. [2020-10-28 00:04:36,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12170 states. [2020-10-28 00:04:36,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12170 states to 12170 states and 19022 transitions. [2020-10-28 00:04:36,593 INFO L78 Accepts]: Start accepts. Automaton has 12170 states and 19022 transitions. Word has length 134 [2020-10-28 00:04:36,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:04:36,593 INFO L481 AbstractCegarLoop]: Abstraction has 12170 states and 19022 transitions. [2020-10-28 00:04:36,593 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 00:04:36,594 INFO L276 IsEmpty]: Start isEmpty. Operand 12170 states and 19022 transitions. [2020-10-28 00:04:36,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-28 00:04:36,603 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:04:36,604 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:04:36,604 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 00:04:36,604 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:04:36,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:04:36,605 INFO L82 PathProgramCache]: Analyzing trace with hash -514461696, now seen corresponding path program 1 times [2020-10-28 00:04:36,605 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:04:36,605 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1640445674] [2020-10-28 00:04:36,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:04:36,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:04:36,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:04:36,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:04:36,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:04:36,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:04:36,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:04:36,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:04:37,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:04:37,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:04:39,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:04:39,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:04:39,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:04:40,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:04:41,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:04:41,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-28 00:04:41,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-28 00:04:41,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5067 [2020-10-28 00:04:41,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:04:41,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 00:04:41,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-28 00:04:41,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-28 00:04:41,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:04:42,169 WARN L193 SmtUtils]: Spent 377.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-28 00:04:42,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:04:42,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:04:42,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:04:42,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:04:42,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:04:42,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:04:42,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 00:04:42,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:04:42,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:04:42,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:04:42,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:04:42,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:04:42,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:04:42,225 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1640445674] [2020-10-28 00:04:42,226 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:04:42,226 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-28 00:04:42,226 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510205528] [2020-10-28 00:04:42,226 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 00:04:42,227 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:04:42,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 00:04:42,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-28 00:04:42,228 INFO L87 Difference]: Start difference. First operand 12170 states and 19022 transitions. Second operand 7 states. [2020-10-28 00:04:42,699 WARN L193 SmtUtils]: Spent 410.00 ms on a formula simplification that was a NOOP. DAG size: 227 [2020-10-28 00:04:44,128 WARN L193 SmtUtils]: Spent 437.00 ms on a formula simplification that was a NOOP. DAG size: 229 [2020-10-28 00:04:44,578 WARN L193 SmtUtils]: Spent 424.00 ms on a formula simplification that was a NOOP. DAG size: 227 [2020-10-28 00:04:45,028 WARN L193 SmtUtils]: Spent 413.00 ms on a formula simplification that was a NOOP. DAG size: 224 [2020-10-28 00:04:45,457 WARN L193 SmtUtils]: Spent 407.00 ms on a formula simplification that was a NOOP. DAG size: 225 [2020-10-28 00:04:47,743 WARN L193 SmtUtils]: Spent 430.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-10-28 00:04:48,198 WARN L193 SmtUtils]: Spent 424.00 ms on a formula simplification that was a NOOP. DAG size: 227 [2020-10-28 00:04:49,621 WARN L193 SmtUtils]: Spent 437.00 ms on a formula simplification that was a NOOP. DAG size: 228 [2020-10-28 00:04:49,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:04:49,949 INFO L93 Difference]: Finished difference Result 34788 states and 54557 transitions. [2020-10-28 00:04:49,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-28 00:04:49,950 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 134 [2020-10-28 00:04:49,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:04:49,995 INFO L225 Difference]: With dead ends: 34788 [2020-10-28 00:04:49,996 INFO L226 Difference]: Without dead ends: 28508 [2020-10-28 00:04:50,011 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2020-10-28 00:04:50,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28508 states. [2020-10-28 00:04:51,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28508 to 11369. [2020-10-28 00:04:51,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11369 states. [2020-10-28 00:04:51,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11369 states to 11369 states and 17763 transitions. [2020-10-28 00:04:51,027 INFO L78 Accepts]: Start accepts. Automaton has 11369 states and 17763 transitions. Word has length 134 [2020-10-28 00:04:51,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:04:51,027 INFO L481 AbstractCegarLoop]: Abstraction has 11369 states and 17763 transitions. [2020-10-28 00:04:51,027 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 00:04:51,027 INFO L276 IsEmpty]: Start isEmpty. Operand 11369 states and 17763 transitions. [2020-10-28 00:04:51,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-28 00:04:51,035 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:04:51,035 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:04:51,036 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 00:04:51,036 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:04:51,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:04:51,036 INFO L82 PathProgramCache]: Analyzing trace with hash 1136995023, now seen corresponding path program 1 times [2020-10-28 00:04:51,037 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:04:51,037 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1308604562] [2020-10-28 00:04:51,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:04:51,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:04:51,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:04:51,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:04:51,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:04:51,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:04:51,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:04:51,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:04:51,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:04:51,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:04:53,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:04:53,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:04:53,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:04:54,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:04:56,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:04:56,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-28 00:04:56,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-28 00:04:56,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-28 00:04:56,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:04:56,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 00:04:56,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-28 00:04:56,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-28 00:04:56,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:04:56,543 WARN L193 SmtUtils]: Spent 380.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-28 00:04:56,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:04:56,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:04:56,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:04:56,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:04:56,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:04:56,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:04:56,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 00:04:56,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:04:56,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:04:56,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:04:56,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:04:56,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:04:56,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:04:56,608 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1308604562] [2020-10-28 00:04:56,613 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:04:56,614 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-28 00:04:56,614 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82427037] [2020-10-28 00:04:56,614 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 00:04:56,615 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:04:56,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 00:04:56,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-28 00:04:56,616 INFO L87 Difference]: Start difference. First operand 11369 states and 17763 transitions. Second operand 7 states. [2020-10-28 00:04:57,094 WARN L193 SmtUtils]: Spent 422.00 ms on a formula simplification that was a NOOP. DAG size: 227 [2020-10-28 00:04:58,613 WARN L193 SmtUtils]: Spent 487.00 ms on a formula simplification that was a NOOP. DAG size: 229 [2020-10-28 00:04:59,071 WARN L193 SmtUtils]: Spent 433.00 ms on a formula simplification that was a NOOP. DAG size: 227 [2020-10-28 00:04:59,521 WARN L193 SmtUtils]: Spent 410.00 ms on a formula simplification that was a NOOP. DAG size: 224 [2020-10-28 00:04:59,975 WARN L193 SmtUtils]: Spent 414.00 ms on a formula simplification that was a NOOP. DAG size: 225 [2020-10-28 00:05:02,106 WARN L193 SmtUtils]: Spent 428.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-10-28 00:05:02,640 WARN L193 SmtUtils]: Spent 491.00 ms on a formula simplification that was a NOOP. DAG size: 227 [2020-10-28 00:05:04,070 WARN L193 SmtUtils]: Spent 434.00 ms on a formula simplification that was a NOOP. DAG size: 228 [2020-10-28 00:05:04,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:05:04,377 INFO L93 Difference]: Finished difference Result 32949 states and 51666 transitions. [2020-10-28 00:05:04,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-28 00:05:04,377 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 134 [2020-10-28 00:05:04,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:05:04,420 INFO L225 Difference]: With dead ends: 32949 [2020-10-28 00:05:04,420 INFO L226 Difference]: Without dead ends: 26665 [2020-10-28 00:05:04,440 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2020-10-28 00:05:04,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26665 states. [2020-10-28 00:05:05,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26665 to 10568. [2020-10-28 00:05:05,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10568 states. [2020-10-28 00:05:05,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10568 states to 10568 states and 16504 transitions. [2020-10-28 00:05:05,688 INFO L78 Accepts]: Start accepts. Automaton has 10568 states and 16504 transitions. Word has length 134 [2020-10-28 00:05:05,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:05:05,688 INFO L481 AbstractCegarLoop]: Abstraction has 10568 states and 16504 transitions. [2020-10-28 00:05:05,688 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 00:05:05,688 INFO L276 IsEmpty]: Start isEmpty. Operand 10568 states and 16504 transitions. [2020-10-28 00:05:05,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-28 00:05:05,696 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:05:05,696 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:05:05,696 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 00:05:05,696 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:05:05,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:05:05,697 INFO L82 PathProgramCache]: Analyzing trace with hash -1526054737, now seen corresponding path program 1 times [2020-10-28 00:05:05,697 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:05:05,697 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2067573950] [2020-10-28 00:05:05,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:05:05,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:05:05,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:05:05,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:05:05,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:05:05,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:05:05,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:05:05,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:05:06,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:05:06,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:05:08,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:05:08,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:05:08,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:05:09,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:05:10,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:05:10,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-28 00:05:10,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-28 00:05:10,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-28 00:05:10,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:05:10,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 00:05:10,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-28 00:05:10,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-28 00:05:10,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:05:11,269 WARN L193 SmtUtils]: Spent 465.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-28 00:05:11,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:05:11,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:05:11,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:05:11,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:05:11,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:05:11,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:05:11,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 00:05:11,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:05:11,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:05:11,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:05:11,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:05:11,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:05:11,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:05:11,320 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2067573950] [2020-10-28 00:05:11,320 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:05:11,320 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-28 00:05:11,320 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710481640] [2020-10-28 00:05:11,320 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 00:05:11,321 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:05:11,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 00:05:11,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-28 00:05:11,321 INFO L87 Difference]: Start difference. First operand 10568 states and 16504 transitions. Second operand 7 states. [2020-10-28 00:05:11,799 WARN L193 SmtUtils]: Spent 421.00 ms on a formula simplification that was a NOOP. DAG size: 227 [2020-10-28 00:05:13,271 WARN L193 SmtUtils]: Spent 437.00 ms on a formula simplification that was a NOOP. DAG size: 229 [2020-10-28 00:05:13,725 WARN L193 SmtUtils]: Spent 429.00 ms on a formula simplification that was a NOOP. DAG size: 227 [2020-10-28 00:05:14,161 WARN L193 SmtUtils]: Spent 405.00 ms on a formula simplification that was a NOOP. DAG size: 225 [2020-10-28 00:05:14,611 WARN L193 SmtUtils]: Spent 410.00 ms on a formula simplification that was a NOOP. DAG size: 224 [2020-10-28 00:05:16,737 WARN L193 SmtUtils]: Spent 421.00 ms on a formula simplification that was a NOOP. DAG size: 227 [2020-10-28 00:05:17,199 WARN L193 SmtUtils]: Spent 418.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-10-28 00:05:18,574 WARN L193 SmtUtils]: Spent 426.00 ms on a formula simplification that was a NOOP. DAG size: 228 [2020-10-28 00:05:18,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:05:18,868 INFO L93 Difference]: Finished difference Result 32046 states and 50244 transitions. [2020-10-28 00:05:18,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-28 00:05:18,869 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 134 [2020-10-28 00:05:18,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:05:18,895 INFO L225 Difference]: With dead ends: 32046 [2020-10-28 00:05:18,895 INFO L226 Difference]: Without dead ends: 25776 [2020-10-28 00:05:18,910 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2020-10-28 00:05:18,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25776 states. [2020-10-28 00:05:19,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25776 to 9797. [2020-10-28 00:05:19,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9797 states. [2020-10-28 00:05:19,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9797 states to 9797 states and 15293 transitions. [2020-10-28 00:05:19,891 INFO L78 Accepts]: Start accepts. Automaton has 9797 states and 15293 transitions. Word has length 134 [2020-10-28 00:05:19,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:05:19,891 INFO L481 AbstractCegarLoop]: Abstraction has 9797 states and 15293 transitions. [2020-10-28 00:05:19,892 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 00:05:19,892 INFO L276 IsEmpty]: Start isEmpty. Operand 9797 states and 15293 transitions. [2020-10-28 00:05:19,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-28 00:05:19,898 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:05:19,898 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:05:19,898 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 00:05:19,898 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:05:19,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:05:19,899 INFO L82 PathProgramCache]: Analyzing trace with hash 125401982, now seen corresponding path program 1 times [2020-10-28 00:05:19,899 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:05:19,899 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1819469761] [2020-10-28 00:05:19,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:05:19,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:05:19,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:05:19,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:05:20,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:05:20,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:05:20,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:05:20,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:05:20,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:05:20,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:05:22,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:05:22,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:05:22,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:05:23,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:05:24,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:05:24,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-28 00:05:24,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-28 00:05:24,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-28 00:05:24,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:05:24,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 00:05:24,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-28 00:05:24,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-28 00:05:24,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:05:25,414 WARN L193 SmtUtils]: Spent 397.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-28 00:05:25,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:05:25,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:05:25,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:05:25,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:05:25,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:05:25,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:05:25,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 00:05:25,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:05:25,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:05:25,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:05:25,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:05:25,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:05:25,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:05:25,474 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1819469761] [2020-10-28 00:05:25,475 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:05:25,475 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-28 00:05:25,475 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262783313] [2020-10-28 00:05:25,475 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 00:05:25,476 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:05:25,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 00:05:25,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-28 00:05:25,476 INFO L87 Difference]: Start difference. First operand 9797 states and 15293 transitions. Second operand 7 states. [2020-10-28 00:05:25,928 WARN L193 SmtUtils]: Spent 388.00 ms on a formula simplification that was a NOOP. DAG size: 227 [2020-10-28 00:05:27,481 WARN L193 SmtUtils]: Spent 488.00 ms on a formula simplification that was a NOOP. DAG size: 229 [2020-10-28 00:05:27,945 WARN L193 SmtUtils]: Spent 424.00 ms on a formula simplification that was a NOOP. DAG size: 227 [2020-10-28 00:05:28,374 WARN L193 SmtUtils]: Spent 405.00 ms on a formula simplification that was a NOOP. DAG size: 225 [2020-10-28 00:05:28,800 WARN L193 SmtUtils]: Spent 398.00 ms on a formula simplification that was a NOOP. DAG size: 224 [2020-10-28 00:05:31,027 WARN L193 SmtUtils]: Spent 479.00 ms on a formula simplification that was a NOOP. DAG size: 227 [2020-10-28 00:05:31,451 WARN L193 SmtUtils]: Spent 395.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-10-28 00:05:32,847 WARN L193 SmtUtils]: Spent 427.00 ms on a formula simplification that was a NOOP. DAG size: 228 [2020-10-28 00:05:33,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:05:33,130 INFO L93 Difference]: Finished difference Result 30227 states and 47385 transitions. [2020-10-28 00:05:33,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-28 00:05:33,131 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 134 [2020-10-28 00:05:33,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:05:33,157 INFO L225 Difference]: With dead ends: 30227 [2020-10-28 00:05:33,158 INFO L226 Difference]: Without dead ends: 23953 [2020-10-28 00:05:33,174 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2020-10-28 00:05:33,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23953 states. [2020-10-28 00:05:34,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23953 to 9026. [2020-10-28 00:05:34,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9026 states. [2020-10-28 00:05:34,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9026 states to 9026 states and 14082 transitions. [2020-10-28 00:05:34,043 INFO L78 Accepts]: Start accepts. Automaton has 9026 states and 14082 transitions. Word has length 134 [2020-10-28 00:05:34,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:05:34,043 INFO L481 AbstractCegarLoop]: Abstraction has 9026 states and 14082 transitions. [2020-10-28 00:05:34,043 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 00:05:34,044 INFO L276 IsEmpty]: Start isEmpty. Operand 9026 states and 14082 transitions. [2020-10-28 00:05:34,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-10-28 00:05:34,049 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:05:34,049 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:05:34,049 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 00:05:34,049 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:05:34,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:05:34,050 INFO L82 PathProgramCache]: Analyzing trace with hash -1965266335, now seen corresponding path program 1 times [2020-10-28 00:05:34,050 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:05:34,050 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1884687950] [2020-10-28 00:05:34,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:05:34,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:05:34,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:05:34,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:05:34,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:05:34,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:05:34,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:05:34,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:05:35,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:05:35,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:05:38,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:05:38,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:05:38,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:05:38,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:05:38,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:05:39,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:05:39,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-28 00:05:39,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-28 00:05:39,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-28 00:05:39,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:05:39,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 00:05:39,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-28 00:05:39,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-28 00:05:39,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:05:39,582 WARN L193 SmtUtils]: Spent 400.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-28 00:05:39,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:05:39,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:05:39,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:05:39,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:05:39,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:05:39,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:05:39,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 00:05:39,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:05:39,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:05:39,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:05:39,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:05:39,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:05:39,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:05:39,631 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1884687950] [2020-10-28 00:05:39,631 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:05:39,631 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-28 00:05:39,631 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18873894] [2020-10-28 00:05:39,632 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 00:05:39,632 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:05:39,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 00:05:39,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-28 00:05:39,632 INFO L87 Difference]: Start difference. First operand 9026 states and 14082 transitions. Second operand 7 states. [2020-10-28 00:05:40,111 WARN L193 SmtUtils]: Spent 416.00 ms on a formula simplification that was a NOOP. DAG size: 227 [2020-10-28 00:05:41,901 WARN L193 SmtUtils]: Spent 437.00 ms on a formula simplification that was a NOOP. DAG size: 229 [2020-10-28 00:05:42,360 WARN L193 SmtUtils]: Spent 422.00 ms on a formula simplification that was a NOOP. DAG size: 227 [2020-10-28 00:05:42,794 WARN L193 SmtUtils]: Spent 410.00 ms on a formula simplification that was a NOOP. DAG size: 225 [2020-10-28 00:05:43,243 WARN L193 SmtUtils]: Spent 406.00 ms on a formula simplification that was a NOOP. DAG size: 224 [2020-10-28 00:05:47,072 WARN L193 SmtUtils]: Spent 386.00 ms on a formula simplification that was a NOOP. DAG size: 227 [2020-10-28 00:05:47,508 WARN L193 SmtUtils]: Spent 406.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-10-28 00:05:48,715 WARN L193 SmtUtils]: Spent 436.00 ms on a formula simplification that was a NOOP. DAG size: 228 [2020-10-28 00:05:48,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:05:48,818 INFO L93 Difference]: Finished difference Result 42652 states and 66800 transitions. [2020-10-28 00:05:48,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-28 00:05:48,818 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 135 [2020-10-28 00:05:48,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:05:48,862 INFO L225 Difference]: With dead ends: 42652 [2020-10-28 00:05:48,862 INFO L226 Difference]: Without dead ends: 39786 [2020-10-28 00:05:48,878 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2020-10-28 00:05:49,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39786 states. [2020-10-28 00:05:50,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39786 to 9161. [2020-10-28 00:05:50,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9161 states. [2020-10-28 00:05:50,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9161 states to 9161 states and 14209 transitions. [2020-10-28 00:05:50,320 INFO L78 Accepts]: Start accepts. Automaton has 9161 states and 14209 transitions. Word has length 135 [2020-10-28 00:05:50,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:05:50,320 INFO L481 AbstractCegarLoop]: Abstraction has 9161 states and 14209 transitions. [2020-10-28 00:05:50,320 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 00:05:50,320 INFO L276 IsEmpty]: Start isEmpty. Operand 9161 states and 14209 transitions. [2020-10-28 00:05:50,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-10-28 00:05:50,325 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:05:50,325 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:05:50,325 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 00:05:50,325 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:05:50,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:05:50,326 INFO L82 PathProgramCache]: Analyzing trace with hash -1246799154, now seen corresponding path program 1 times [2020-10-28 00:05:50,326 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:05:50,326 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1117707397] [2020-10-28 00:05:50,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:05:50,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:05:50,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:05:50,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:05:50,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:05:50,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:05:50,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:05:50,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:05:50,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:05:51,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:05:53,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:05:53,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:05:53,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:05:53,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:05:53,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:05:55,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:05:55,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-28 00:05:55,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-28 00:05:55,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-28 00:05:55,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:05:55,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 00:05:55,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-28 00:05:55,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-28 00:05:55,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:05:55,850 WARN L193 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-28 00:05:55,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:05:55,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:05:55,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:05:55,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:05:55,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:05:55,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:05:55,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 00:05:55,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:05:55,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:05:55,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:05:55,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:05:55,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:05:55,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:05:55,896 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1117707397] [2020-10-28 00:05:55,896 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:05:55,896 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-28 00:05:55,896 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444151725] [2020-10-28 00:05:55,897 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 00:05:55,897 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:05:55,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 00:05:55,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-28 00:05:55,897 INFO L87 Difference]: Start difference. First operand 9161 states and 14209 transitions. Second operand 7 states. [2020-10-28 00:05:56,383 WARN L193 SmtUtils]: Spent 426.00 ms on a formula simplification that was a NOOP. DAG size: 227 [2020-10-28 00:05:58,260 WARN L193 SmtUtils]: Spent 449.00 ms on a formula simplification that was a NOOP. DAG size: 229 [2020-10-28 00:05:58,782 WARN L193 SmtUtils]: Spent 490.00 ms on a formula simplification that was a NOOP. DAG size: 227 [2020-10-28 00:05:59,226 WARN L193 SmtUtils]: Spent 418.00 ms on a formula simplification that was a NOOP. DAG size: 225 [2020-10-28 00:05:59,688 WARN L193 SmtUtils]: Spent 419.00 ms on a formula simplification that was a NOOP. DAG size: 224 [2020-10-28 00:06:03,636 WARN L193 SmtUtils]: Spent 422.00 ms on a formula simplification that was a NOOP. DAG size: 227 [2020-10-28 00:06:04,160 WARN L193 SmtUtils]: Spent 494.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-10-28 00:06:06,105 WARN L193 SmtUtils]: Spent 436.00 ms on a formula simplification that was a NOOP. DAG size: 228 [2020-10-28 00:06:06,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:06:06,690 INFO L93 Difference]: Finished difference Result 40976 states and 63964 transitions. [2020-10-28 00:06:06,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-28 00:06:06,690 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 135 [2020-10-28 00:06:06,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:06:06,731 INFO L225 Difference]: With dead ends: 40976 [2020-10-28 00:06:06,731 INFO L226 Difference]: Without dead ends: 35364 [2020-10-28 00:06:06,742 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2020-10-28 00:06:06,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35364 states. [2020-10-28 00:06:08,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35364 to 12037. [2020-10-28 00:06:08,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12037 states. [2020-10-28 00:06:08,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12037 states to 12037 states and 18703 transitions. [2020-10-28 00:06:08,856 INFO L78 Accepts]: Start accepts. Automaton has 12037 states and 18703 transitions. Word has length 135 [2020-10-28 00:06:08,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:06:08,856 INFO L481 AbstractCegarLoop]: Abstraction has 12037 states and 18703 transitions. [2020-10-28 00:06:08,856 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 00:06:08,856 INFO L276 IsEmpty]: Start isEmpty. Operand 12037 states and 18703 transitions. [2020-10-28 00:06:08,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-10-28 00:06:08,861 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:06:08,861 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:06:08,861 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 00:06:08,861 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:06:08,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:06:08,862 INFO L82 PathProgramCache]: Analyzing trace with hash 404657565, now seen corresponding path program 1 times [2020-10-28 00:06:08,862 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:06:08,862 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [831384137] [2020-10-28 00:06:08,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:06:08,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:06:08,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:06:08,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:06:09,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:06:09,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:06:09,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:06:09,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:06:09,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:06:09,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:06:12,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:06:12,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:06:12,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:06:13,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:06:13,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-28 00:06:13,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-28 00:06:13,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-28 00:06:13,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:06:13,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 00:06:13,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-28 00:06:13,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-28 00:06:13,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:06:14,385 WARN L193 SmtUtils]: Spent 407.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-28 00:06:14,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:06:14,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:06:14,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:06:14,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:06:14,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:06:14,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:06:14,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 00:06:14,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:06:14,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:06:14,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:06:14,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:06:14,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:06:14,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:06:14,446 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [831384137] [2020-10-28 00:06:14,446 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:06:14,446 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-28 00:06:14,446 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160533615] [2020-10-28 00:06:14,446 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 00:06:14,447 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:06:14,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 00:06:14,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-28 00:06:14,447 INFO L87 Difference]: Start difference. First operand 12037 states and 18703 transitions. Second operand 7 states. [2020-10-28 00:06:14,995 WARN L193 SmtUtils]: Spent 487.00 ms on a formula simplification that was a NOOP. DAG size: 227 [2020-10-28 00:06:16,963 WARN L193 SmtUtils]: Spent 411.00 ms on a formula simplification that was a NOOP. DAG size: 229 [2020-10-28 00:06:17,403 WARN L193 SmtUtils]: Spent 379.00 ms on a formula simplification that was a NOOP. DAG size: 224 [2020-10-28 00:06:17,820 WARN L193 SmtUtils]: Spent 381.00 ms on a formula simplification that was a NOOP. DAG size: 225 [2020-10-28 00:06:18,250 WARN L193 SmtUtils]: Spent 399.00 ms on a formula simplification that was a NOOP. DAG size: 227 [2020-10-28 00:06:23,647 WARN L193 SmtUtils]: Spent 401.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-10-28 00:06:24,103 WARN L193 SmtUtils]: Spent 430.00 ms on a formula simplification that was a NOOP. DAG size: 227 [2020-10-28 00:06:27,360 WARN L193 SmtUtils]: Spent 488.00 ms on a formula simplification that was a NOOP. DAG size: 228 [2020-10-28 00:06:28,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:06:28,243 INFO L93 Difference]: Finished difference Result 56254 states and 87818 transitions. [2020-10-28 00:06:28,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-28 00:06:28,243 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 135 [2020-10-28 00:06:28,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:06:28,327 INFO L225 Difference]: With dead ends: 56254 [2020-10-28 00:06:28,327 INFO L226 Difference]: Without dead ends: 50630 [2020-10-28 00:06:28,348 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2020-10-28 00:06:28,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50630 states. [2020-10-28 00:06:31,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50630 to 14941. [2020-10-28 00:06:31,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14941 states. [2020-10-28 00:06:31,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14941 states to 14941 states and 23223 transitions. [2020-10-28 00:06:31,812 INFO L78 Accepts]: Start accepts. Automaton has 14941 states and 23223 transitions. Word has length 135 [2020-10-28 00:06:31,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:06:31,812 INFO L481 AbstractCegarLoop]: Abstraction has 14941 states and 23223 transitions. [2020-10-28 00:06:31,812 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 00:06:31,812 INFO L276 IsEmpty]: Start isEmpty. Operand 14941 states and 23223 transitions. [2020-10-28 00:06:31,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-10-28 00:06:31,817 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:06:31,817 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:06:31,817 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 00:06:31,817 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:06:31,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:06:31,818 INFO L82 PathProgramCache]: Analyzing trace with hash -810762241, now seen corresponding path program 1 times [2020-10-28 00:06:31,818 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:06:31,818 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1550459253] [2020-10-28 00:06:31,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:06:31,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:06:31,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:06:31,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:06:31,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:06:31,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:06:32,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:06:32,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:06:32,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:06:32,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:06:34,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:06:34,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:06:34,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:06:36,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:06:36,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:06:36,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:06:36,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:06:36,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-28 00:06:36,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-28 00:06:36,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5041 [2020-10-28 00:06:36,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:06:36,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 00:06:36,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-28 00:06:36,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-28 00:06:36,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:06:37,354 WARN L193 SmtUtils]: Spent 384.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-28 00:06:37,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:06:37,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:06:37,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:06:37,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:06:37,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:06:37,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:06:37,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 00:06:37,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:06:37,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:06:37,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:06:37,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:06:37,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:06:37,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:06:37,413 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1550459253] [2020-10-28 00:06:37,413 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:06:37,413 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-28 00:06:37,413 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974850472] [2020-10-28 00:06:37,414 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 00:06:37,414 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:06:37,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 00:06:37,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-28 00:06:37,414 INFO L87 Difference]: Start difference. First operand 14941 states and 23223 transitions. Second operand 7 states. [2020-10-28 00:06:37,892 WARN L193 SmtUtils]: Spent 410.00 ms on a formula simplification that was a NOOP. DAG size: 227 [2020-10-28 00:06:40,191 WARN L193 SmtUtils]: Spent 445.00 ms on a formula simplification that was a NOOP. DAG size: 229 [2020-10-28 00:06:40,693 WARN L193 SmtUtils]: Spent 402.00 ms on a formula simplification that was a NOOP. DAG size: 224 [2020-10-28 00:06:41,095 WARN L193 SmtUtils]: Spent 380.00 ms on a formula simplification that was a NOOP. DAG size: 225 [2020-10-28 00:06:41,526 WARN L193 SmtUtils]: Spent 396.00 ms on a formula simplification that was a NOOP. DAG size: 227