/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded/pals_floodmax.4.4.ufo.BOUNDED-8.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 04:19:59,364 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 04:19:59,368 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 04:19:59,426 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 04:19:59,427 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 04:19:59,434 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 04:19:59,436 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 04:19:59,441 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 04:19:59,444 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 04:19:59,450 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 04:19:59,451 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 04:19:59,453 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 04:19:59,453 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 04:19:59,456 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 04:19:59,458 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 04:19:59,460 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 04:19:59,461 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 04:19:59,464 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 04:19:59,471 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 04:19:59,479 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 04:19:59,481 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 04:19:59,482 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 04:19:59,484 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 04:19:59,487 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 04:19:59,495 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 04:19:59,496 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 04:19:59,496 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 04:19:59,499 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 04:19:59,499 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 04:19:59,500 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 04:19:59,500 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 04:19:59,501 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 04:19:59,503 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 04:19:59,504 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 04:19:59,505 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 04:19:59,506 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 04:19:59,506 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 04:19:59,507 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 04:19:59,507 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 04:19:59,508 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 04:19:59,508 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 04:19:59,516 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 04:19:59,564 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 04:19:59,565 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 04:19:59,569 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 04:19:59,570 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 04:19:59,570 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 04:19:59,570 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 04:19:59,570 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 04:19:59,570 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 04:19:59,571 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 04:19:59,571 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 04:19:59,572 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 04:19:59,572 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 04:19:59,572 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 04:19:59,572 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 04:19:59,573 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 04:19:59,573 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 04:19:59,573 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 04:19:59,573 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 04:19:59,573 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 04:19:59,574 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 04:19:59,574 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 04:19:59,574 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 04:19:59,574 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 04:19:59,574 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 04:19:59,575 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 04:19:59,575 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 04:19:59,575 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 04:19:59,575 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 04:19:59,575 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 04:19:59,576 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 04:19:59,970 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 04:20:00,006 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 04:20:00,010 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 04:20:00,011 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 04:20:00,012 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 04:20:00,014 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_floodmax.4.4.ufo.BOUNDED-8.pals.c [2020-10-27 04:20:00,097 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2c63f1da9/5e513e600fa8453aaad1509f38f68ea1/FLAG18cb7f5ea [2020-10-27 04:20:00,742 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 04:20:00,743 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded/pals_floodmax.4.4.ufo.BOUNDED-8.pals.c [2020-10-27 04:20:00,764 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2c63f1da9/5e513e600fa8453aaad1509f38f68ea1/FLAG18cb7f5ea [2020-10-27 04:20:01,047 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2c63f1da9/5e513e600fa8453aaad1509f38f68ea1 [2020-10-27 04:20:01,052 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 04:20:01,060 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 04:20:01,065 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 04:20:01,065 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 04:20:01,069 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 04:20:01,070 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:20:01" (1/1) ... [2020-10-27 04:20:01,079 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6bfac43b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:20:01, skipping insertion in model container [2020-10-27 04:20:01,079 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:20:01" (1/1) ... [2020-10-27 04:20:01,089 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 04:20:01,174 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 04:20:01,640 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 04:20:01,661 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 04:20:01,790 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 04:20:01,813 INFO L208 MainTranslator]: Completed translation [2020-10-27 04:20:01,813 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:20:01 WrapperNode [2020-10-27 04:20:01,814 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 04:20:01,815 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 04:20:01,815 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 04:20:01,815 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 04:20:01,829 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:20:01" (1/1) ... [2020-10-27 04:20:01,829 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:20:01" (1/1) ... [2020-10-27 04:20:01,849 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:20:01" (1/1) ... [2020-10-27 04:20:01,849 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:20:01" (1/1) ... [2020-10-27 04:20:01,904 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:20:01" (1/1) ... [2020-10-27 04:20:01,946 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:20:01" (1/1) ... [2020-10-27 04:20:01,951 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:20:01" (1/1) ... [2020-10-27 04:20:01,960 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 04:20:01,961 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 04:20:01,961 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 04:20:01,962 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 04:20:01,962 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:20:01" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 04:20:02,041 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 04:20:02,042 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 04:20:02,042 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 04:20:02,043 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 04:20:02,043 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2020-10-27 04:20:02,044 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2020-10-27 04:20:02,044 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2020-10-27 04:20:02,044 INFO L138 BoogieDeclarations]: Found implementation of procedure node4 [2020-10-27 04:20:02,045 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-10-27 04:20:02,045 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-10-27 04:20:02,046 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 04:20:02,046 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2020-10-27 04:20:02,047 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 04:20:02,047 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 04:20:02,047 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 04:20:02,051 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 04:20:02,051 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 04:20:02,051 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 04:20:02,051 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 04:20:02,051 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 04:20:02,051 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 04:20:02,052 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 04:20:02,052 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 04:20:02,052 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 04:20:02,052 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 04:20:02,052 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-27 04:20:02,052 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 04:20:02,052 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 04:20:02,053 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 04:20:02,053 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 04:20:02,053 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 04:20:02,053 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 04:20:02,053 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 04:20:02,053 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 04:20:02,053 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 04:20:03,613 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 04:20:03,613 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 04:20:03,616 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:20:03 BoogieIcfgContainer [2020-10-27 04:20:03,616 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 04:20:03,618 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 04:20:03,619 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 04:20:03,622 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 04:20:03,623 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 04:20:01" (1/3) ... [2020-10-27 04:20:03,624 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bd9bf1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:20:03, skipping insertion in model container [2020-10-27 04:20:03,624 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:20:01" (2/3) ... [2020-10-27 04:20:03,624 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bd9bf1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:20:03, skipping insertion in model container [2020-10-27 04:20:03,624 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:20:03" (3/3) ... [2020-10-27 04:20:03,626 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.4.4.ufo.BOUNDED-8.pals.c [2020-10-27 04:20:03,639 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 04:20:03,645 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 04:20:03,659 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 04:20:03,692 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 04:20:03,692 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 04:20:03,692 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 04:20:03,693 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 04:20:03,693 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 04:20:03,693 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 04:20:03,693 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 04:20:03,693 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 04:20:03,720 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states. [2020-10-27 04:20:03,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-27 04:20:03,737 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:20:03,738 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] [2020-10-27 04:20:03,739 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:20:03,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:20:03,745 INFO L82 PathProgramCache]: Analyzing trace with hash -1744427751, now seen corresponding path program 1 times [2020-10-27 04:20:03,755 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:20:03,755 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [79208090] [2020-10-27 04:20:03,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:20:04,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:20:04,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:04,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:20:04,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-27 04:20:04,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:20:04,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 710 [2020-10-27 04:20:04,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:20:04,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:20:04,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-27 04:20:04,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:20:04,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 04:20:05,607 WARN L193 SmtUtils]: Spent 505.00 ms on a formula simplification that was a NOOP. DAG size: 268 [2020-10-27 04:20:05,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:20:05,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:20:05,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:05,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:20:05,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:20:05,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:20:05,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-27 04:20:05,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:20:05,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:20:05,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:20:05,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:20:05,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:20:05,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:20:05,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:20:05,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:05,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:20:05,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-27 04:20:05,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:20:05,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-27 04:20:05,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:20:05,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:20:05,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:20:05,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:20:05,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:20:05,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-27 04:20:05,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:20:05,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:05,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:20:05,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:20:05,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:20:05,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:20:05,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:20:05,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:20:05,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 04:20:05,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:20:05,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:20:05,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-27 04:20:05,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:20:05,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:05,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:20:05,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:20:05,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:20:05,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 04:20:05,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:20:05,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:20:05,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:20:05,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:20:05,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:20:05,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-27 04:20:05,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:20:05,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:05,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:20:05,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:20:05,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:20:05,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 04:20:05,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:20:05,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:20:05,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:20:05,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:20:05,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:20:05,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-27 04:20:05,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:20:05,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:05,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:20:05,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:20:05,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:20:05,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 04:20:05,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:20:05,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:20:05,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:20:05,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:20:05,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:20:05,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-27 04:20:05,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:20:05,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:06,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:20:06,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:20:06,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:20:06,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 04:20:06,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:20:06,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:20:06,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:20:06,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:20:06,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:20:06,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-27 04:20:06,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:20:06,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:06,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:20:06,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:20:06,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:20:06,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:20:06,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:20:06,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:20:06,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:20:06,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:20:06,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:20:06,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:20:06,055 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [79208090] [2020-10-27 04:20:06,057 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:20:06,057 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 04:20:06,058 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376519544] [2020-10-27 04:20:06,063 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 04:20:06,064 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:20:06,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 04:20:06,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 04:20:06,080 INFO L87 Difference]: Start difference. First operand 338 states. Second operand 7 states. [2020-10-27 04:20:07,051 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 04:20:07,398 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 04:20:07,808 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 04:20:08,293 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 04:20:08,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:20:08,849 INFO L93 Difference]: Finished difference Result 500 states and 839 transitions. [2020-10-27 04:20:08,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 04:20:08,851 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 105 [2020-10-27 04:20:08,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:20:08,868 INFO L225 Difference]: With dead ends: 500 [2020-10-27 04:20:08,868 INFO L226 Difference]: Without dead ends: 358 [2020-10-27 04:20:08,873 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-10-27 04:20:08,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2020-10-27 04:20:08,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 330. [2020-10-27 04:20:08,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 330 states. [2020-10-27 04:20:09,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 569 transitions. [2020-10-27 04:20:09,002 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 569 transitions. Word has length 105 [2020-10-27 04:20:09,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:20:09,003 INFO L481 AbstractCegarLoop]: Abstraction has 330 states and 569 transitions. [2020-10-27 04:20:09,003 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 04:20:09,003 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 569 transitions. [2020-10-27 04:20:09,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-27 04:20:09,008 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:20:09,008 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] [2020-10-27 04:20:09,008 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 04:20:09,009 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:20:09,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:20:09,009 INFO L82 PathProgramCache]: Analyzing trace with hash -1496281257, now seen corresponding path program 1 times [2020-10-27 04:20:09,010 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:20:09,010 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1299207855] [2020-10-27 04:20:09,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:20:09,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:20:09,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:10,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:20:10,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-27 04:20:10,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:20:10,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1480 [2020-10-27 04:20:10,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:20:10,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 04:20:10,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 64 [2020-10-27 04:20:10,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 04:20:10,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:20:11,256 WARN L193 SmtUtils]: Spent 599.00 ms on a formula simplification that was a NOOP. DAG size: 268 [2020-10-27 04:20:11,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:20:11,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:20:11,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:11,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:20:11,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:20:11,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:20:11,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 04:20:11,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:20:11,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:20:11,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:20:11,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:20:11,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:20:11,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:20:11,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:20:11,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:11,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:20:11,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-27 04:20:11,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:20:11,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 291 [2020-10-27 04:20:11,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:20:11,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:20:11,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:20:11,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-27 04:20:11,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:20:11,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-27 04:20:11,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:20:11,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:11,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:20:11,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:20:11,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:20:11,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:20:11,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:20:11,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:20:11,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:20:11,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:20:11,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:20:11,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-27 04:20:11,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:20:11,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:11,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:20:11,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:20:11,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:20:11,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:20:11,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:20:11,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:20:11,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:20:11,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:20:11,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:20:11,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-27 04:20:11,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:20:11,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:11,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:20:11,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:20:11,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:20:11,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:20:11,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:20:11,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:20:11,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:20:11,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:20:11,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:20:11,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-27 04:20:11,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:20:11,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:11,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:20:11,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:20:11,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:20:11,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:20:11,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:20:11,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:20:11,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:20:11,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:20:11,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:20:12,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-27 04:20:12,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:20:12,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:12,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:20:12,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:20:12,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:20:12,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:20:12,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:20:12,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:20:12,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:20:12,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:20:12,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:20:12,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-27 04:20:12,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:20:12,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:12,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:20:12,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:20:12,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:20:12,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:20:12,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:20:12,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:20:12,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:20:12,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:20:12,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:20:12,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:20:12,067 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1299207855] [2020-10-27 04:20:12,067 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:20:12,067 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-27 04:20:12,068 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121107682] [2020-10-27 04:20:12,069 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 04:20:12,070 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:20:12,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 04:20:12,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2020-10-27 04:20:12,071 INFO L87 Difference]: Start difference. First operand 330 states and 569 transitions. Second operand 13 states. [2020-10-27 04:20:14,914 WARN L193 SmtUtils]: Spent 519.00 ms on a formula simplification that was a NOOP. DAG size: 271 [2020-10-27 04:20:15,519 WARN L193 SmtUtils]: Spent 525.00 ms on a formula simplification that was a NOOP. DAG size: 273 [2020-10-27 04:20:16,206 WARN L193 SmtUtils]: Spent 511.00 ms on a formula simplification that was a NOOP. DAG size: 274 [2020-10-27 04:20:16,842 WARN L193 SmtUtils]: Spent 590.00 ms on a formula simplification that was a NOOP. DAG size: 276 [2020-10-27 04:20:17,622 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 04:20:18,132 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 04:20:18,651 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 04:20:19,161 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 04:20:20,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:20:20,050 INFO L93 Difference]: Finished difference Result 500 states and 839 transitions. [2020-10-27 04:20:20,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 04:20:20,051 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 105 [2020-10-27 04:20:20,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:20:20,062 INFO L225 Difference]: With dead ends: 500 [2020-10-27 04:20:20,062 INFO L226 Difference]: Without dead ends: 368 [2020-10-27 04:20:20,065 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=103, Invalid=317, Unknown=0, NotChecked=0, Total=420 [2020-10-27 04:20:20,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2020-10-27 04:20:20,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 330. [2020-10-27 04:20:20,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 330 states. [2020-10-27 04:20:20,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 527 transitions. [2020-10-27 04:20:20,165 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 527 transitions. Word has length 105 [2020-10-27 04:20:20,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:20:20,169 INFO L481 AbstractCegarLoop]: Abstraction has 330 states and 527 transitions. [2020-10-27 04:20:20,169 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-27 04:20:20,169 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 527 transitions. [2020-10-27 04:20:20,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-27 04:20:20,176 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:20:20,177 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:20:20,178 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 04:20:20,178 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:20:20,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:20:20,178 INFO L82 PathProgramCache]: Analyzing trace with hash -1781112204, now seen corresponding path program 1 times [2020-10-27 04:20:20,179 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:20:20,179 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [894778445] [2020-10-27 04:20:20,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:20:20,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:20:20,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:20,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:20,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:21,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:25,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:20:25,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-10-27 04:20:25,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:20:25,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-27 04:20:25,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:20:25,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:20:25,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-10-27 04:20:25,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-27 04:20:25,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:20:25,867 WARN L193 SmtUtils]: Spent 516.00 ms on a formula simplification that was a NOOP. DAG size: 268 [2020-10-27 04:20:25,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:20:25,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:20:25,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:25,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:20:25,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:20:25,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:20:25,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 04:20:25,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:20:25,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:20:25,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:20:25,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:20:25,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:20:25,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:20:25,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:20:25,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:26,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:20:26,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-27 04:20:26,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:20:26,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-27 04:20:26,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:20:26,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:20:26,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:20:26,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-27 04:20:26,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:20:26,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-27 04:20:26,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:20:26,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:26,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:20:26,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:20:26,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:20:26,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:20:26,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:20:26,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:20:26,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:20:26,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:20:26,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:20:26,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-27 04:20:26,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:20:26,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:26,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:20:26,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:20:26,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:20:26,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 04:20:26,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:20:26,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:20:26,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:20:26,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 04:20:26,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:20:26,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-10-27 04:20:26,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:20:26,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:26,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:20:26,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:20:26,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:20:26,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:20:26,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:20:26,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:20:26,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:20:26,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:20:26,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:20:26,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-10-27 04:20:26,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:20:26,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:26,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:20:26,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:20:26,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:20:26,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:20:26,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:20:26,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:20:26,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:20:26,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:20:26,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:20:26,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-27 04:20:26,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:20:26,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:26,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:20:26,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:20:26,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:20:26,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:20:26,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:20:26,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:20:26,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:20:26,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:20:26,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:20:26,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-27 04:20:26,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:20:26,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:26,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:20:26,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:20:26,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:20:26,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 04:20:26,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:20:26,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:20:26,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:20:26,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:20:26,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:20:26,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:20:26,394 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [894778445] [2020-10-27 04:20:26,394 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:20:26,395 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 04:20:26,395 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971423701] [2020-10-27 04:20:26,397 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 04:20:26,397 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:20:26,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 04:20:26,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-27 04:20:26,398 INFO L87 Difference]: Start difference. First operand 330 states and 527 transitions. Second operand 10 states. [2020-10-27 04:20:27,046 WARN L193 SmtUtils]: Spent 561.00 ms on a formula simplification that was a NOOP. DAG size: 270 [2020-10-27 04:20:28,986 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 04:20:29,271 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2020-10-27 04:20:29,619 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 04:20:29,773 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-27 04:20:30,428 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 04:20:30,598 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-27 04:20:31,332 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 04:20:31,513 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-27 04:20:32,899 WARN L193 SmtUtils]: Spent 529.00 ms on a formula simplification that was a NOOP. DAG size: 270 [2020-10-27 04:20:33,438 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2020-10-27 04:20:33,651 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-27 04:20:33,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:20:33,689 INFO L93 Difference]: Finished difference Result 639 states and 1019 transitions. [2020-10-27 04:20:33,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-27 04:20:33,690 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 146 [2020-10-27 04:20:33,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:20:33,695 INFO L225 Difference]: With dead ends: 639 [2020-10-27 04:20:33,696 INFO L226 Difference]: Without dead ends: 513 [2020-10-27 04:20:33,697 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=133, Invalid=329, Unknown=0, NotChecked=0, Total=462 [2020-10-27 04:20:33,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 513 states. [2020-10-27 04:20:33,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 513 to 444. [2020-10-27 04:20:33,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 444 states. [2020-10-27 04:20:33,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 705 transitions. [2020-10-27 04:20:33,750 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 705 transitions. Word has length 146 [2020-10-27 04:20:33,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:20:33,751 INFO L481 AbstractCegarLoop]: Abstraction has 444 states and 705 transitions. [2020-10-27 04:20:33,751 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 04:20:33,751 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 705 transitions. [2020-10-27 04:20:33,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-10-27 04:20:33,754 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:20:33,754 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:20:33,755 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 04:20:33,755 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:20:33,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:20:33,756 INFO L82 PathProgramCache]: Analyzing trace with hash -1750182502, now seen corresponding path program 1 times [2020-10-27 04:20:33,756 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:20:33,756 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1944291603] [2020-10-27 04:20:33,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:20:33,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:20:33,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:33,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:34,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:34,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:34,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:34,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:38,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:20:38,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-10-27 04:20:38,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 04:20:38,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-27 04:20:38,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:20:38,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:20:38,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 04:20:38,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-27 04:20:38,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:20:39,389 WARN L193 SmtUtils]: Spent 477.00 ms on a formula simplification that was a NOOP. DAG size: 268 [2020-10-27 04:20:39,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:20:39,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:20:39,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:39,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:20:39,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:20:39,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:20:39,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 04:20:39,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:20:39,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:20:39,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:20:39,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:20:39,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:20:39,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:20:39,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:20:39,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:39,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:20:39,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-27 04:20:39,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:20:39,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 174 [2020-10-27 04:20:39,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:20:39,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:20:39,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:20:39,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-27 04:20:39,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:20:39,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-27 04:20:39,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:20:39,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:39,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:20:39,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:20:39,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:20:39,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:20:39,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:20:39,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:20:39,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:20:39,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:20:39,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:20:39,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-27 04:20:39,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:20:39,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:39,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:20:39,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 04:20:39,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:20:39,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-27 04:20:39,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:20:39,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:20:39,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 04:20:39,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:20:39,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:20:39,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-27 04:20:39,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:20:39,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:39,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:20:39,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:20:39,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:20:39,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:20:39,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:20:39,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:20:39,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:20:39,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:20:39,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:20:40,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-27 04:20:40,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:20:40,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:40,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:20:40,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:20:40,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:20:40,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:20:40,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:20:40,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:20:40,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:20:40,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:20:40,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:20:40,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-27 04:20:40,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:20:40,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:40,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:20:40,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:20:40,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:20:40,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:20:40,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:20:40,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:20:40,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:20:40,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:20:40,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:20:40,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-27 04:20:40,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:20:40,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:40,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:20:40,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:20:40,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:20:40,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:20:40,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:20:40,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:20:40,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:20:40,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:20:40,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:20:40,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:20:40,176 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1944291603] [2020-10-27 04:20:40,176 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:20:40,176 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 04:20:40,177 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91328565] [2020-10-27 04:20:40,177 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 04:20:40,177 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:20:40,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 04:20:40,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-27 04:20:40,178 INFO L87 Difference]: Start difference. First operand 444 states and 705 transitions. Second operand 10 states. [2020-10-27 04:20:40,758 WARN L193 SmtUtils]: Spent 508.00 ms on a formula simplification that was a NOOP. DAG size: 272 [2020-10-27 04:20:41,408 WARN L193 SmtUtils]: Spent 599.00 ms on a formula simplification that was a NOOP. DAG size: 280 [2020-10-27 04:20:42,354 WARN L193 SmtUtils]: Spent 606.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-10-27 04:20:43,520 WARN L193 SmtUtils]: Spent 1.13 s on a formula simplification. DAG size of input: 282 DAG size of output: 276 [2020-10-27 04:20:48,541 WARN L193 SmtUtils]: Spent 569.00 ms on a formula simplification that was a NOOP. DAG size: 274 [2020-10-27 04:20:48,927 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2020-10-27 04:20:49,187 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 04:20:49,573 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2020-10-27 04:20:50,129 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2020-10-27 04:20:50,512 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2020-10-27 04:20:50,669 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 04:20:51,303 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2020-10-27 04:20:51,802 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2020-10-27 04:20:51,993 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 04:20:52,587 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2020-10-27 04:20:53,095 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2020-10-27 04:20:53,249 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 04:20:54,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:20:54,723 INFO L93 Difference]: Finished difference Result 1643 states and 2602 transitions. [2020-10-27 04:20:54,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-27 04:20:54,724 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 149 [2020-10-27 04:20:54,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:20:54,732 INFO L225 Difference]: With dead ends: 1643 [2020-10-27 04:20:54,732 INFO L226 Difference]: Without dead ends: 1248 [2020-10-27 04:20:54,735 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=183, Invalid=519, Unknown=0, NotChecked=0, Total=702 [2020-10-27 04:20:54,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1248 states. [2020-10-27 04:20:54,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1248 to 1127. [2020-10-27 04:20:54,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1127 states. [2020-10-27 04:20:54,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1127 states to 1127 states and 1775 transitions. [2020-10-27 04:20:54,862 INFO L78 Accepts]: Start accepts. Automaton has 1127 states and 1775 transitions. Word has length 149 [2020-10-27 04:20:54,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:20:54,863 INFO L481 AbstractCegarLoop]: Abstraction has 1127 states and 1775 transitions. [2020-10-27 04:20:54,863 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 04:20:54,863 INFO L276 IsEmpty]: Start isEmpty. Operand 1127 states and 1775 transitions. [2020-10-27 04:20:54,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-10-27 04:20:54,867 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:20:54,868 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:20:54,868 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 04:20:54,868 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:20:54,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:20:54,869 INFO L82 PathProgramCache]: Analyzing trace with hash -841181186, now seen corresponding path program 1 times [2020-10-27 04:20:54,869 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:20:54,869 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1471526724] [2020-10-27 04:20:54,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:20:54,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:20:54,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:55,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:55,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:55,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:55,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:59,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:59,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:20:59,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-10-27 04:20:59,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 04:20:59,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5049 [2020-10-27 04:20:59,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:20:59,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:20:59,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 04:20:59,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-27 04:20:59,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:21:00,670 WARN L193 SmtUtils]: Spent 600.00 ms on a formula simplification that was a NOOP. DAG size: 268 [2020-10-27 04:21:00,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:21:00,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:21:00,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:21:00,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:21:00,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:21:00,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:21:00,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 04:21:00,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:21:00,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:21:00,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:21:00,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:21:00,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:21:00,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:21:00,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:21:00,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:21:00,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:21:00,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-27 04:21:00,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:21:00,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-10-27 04:21:00,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:21:00,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:21:00,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:21:00,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 04:21:00,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:21:00,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-27 04:21:00,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:21:00,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:21:00,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:21:00,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:21:00,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:21:00,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:21:00,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:21:00,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:21:00,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:21:00,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:21:00,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:21:01,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-27 04:21:01,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:21:01,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:21:01,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:21:01,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 04:21:01,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:21:01,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 04:21:01,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:21:01,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:21:01,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 04:21:01,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 04:21:01,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:21:01,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-27 04:21:01,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:21:01,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:21:01,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:21:01,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:21:01,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:21:01,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:21:01,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:21:01,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:21:01,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:21:01,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:21:01,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:21:01,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-27 04:21:01,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:21:01,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:21:01,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:21:01,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:21:01,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:21:01,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:21:01,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:21:01,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:21:01,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:21:01,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:21:01,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:21:01,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-27 04:21:01,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:21:01,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:21:01,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:21:01,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:21:01,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:21:01,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:21:01,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:21:01,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:21:01,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:21:01,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:21:01,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:21:01,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-27 04:21:01,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:21:01,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:21:01,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:21:01,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:21:01,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:21:01,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:21:01,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:21:01,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:21:01,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:21:01,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:21:01,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:21:01,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:21:01,361 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1471526724] [2020-10-27 04:21:01,362 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:21:01,362 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 04:21:01,362 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086051607] [2020-10-27 04:21:01,362 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 04:21:01,363 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:21:01,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 04:21:01,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-27 04:21:01,364 INFO L87 Difference]: Start difference. First operand 1127 states and 1775 transitions. Second operand 10 states. [2020-10-27 04:21:02,008 WARN L193 SmtUtils]: Spent 573.00 ms on a formula simplification that was a NOOP. DAG size: 272 [2020-10-27 04:21:02,577 WARN L193 SmtUtils]: Spent 525.00 ms on a formula simplification that was a NOOP. DAG size: 270 [2020-10-27 04:21:03,192 WARN L193 SmtUtils]: Spent 551.00 ms on a formula simplification that was a NOOP. DAG size: 276 [2020-10-27 04:21:03,790 WARN L193 SmtUtils]: Spent 578.00 ms on a formula simplification that was a NOOP. DAG size: 274 [2020-10-27 04:21:07,685 WARN L193 SmtUtils]: Spent 551.00 ms on a formula simplification that was a NOOP. DAG size: 274 [2020-10-27 04:21:08,049 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2020-10-27 04:21:08,289 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2020-10-27 04:21:08,980 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2020-10-27 04:21:09,187 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2020-10-27 04:21:09,866 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2020-10-27 04:21:10,163 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2020-10-27 04:21:10,933 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2020-10-27 04:21:11,248 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2020-10-27 04:21:12,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:21:12,638 INFO L93 Difference]: Finished difference Result 3554 states and 5617 transitions. [2020-10-27 04:21:12,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-27 04:21:12,646 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 149 [2020-10-27 04:21:12,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:21:12,663 INFO L225 Difference]: With dead ends: 3554 [2020-10-27 04:21:12,664 INFO L226 Difference]: Without dead ends: 2445 [2020-10-27 04:21:12,668 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=131, Invalid=375, Unknown=0, NotChecked=0, Total=506 [2020-10-27 04:21:12,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2445 states. [2020-10-27 04:21:12,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2445 to 2225. [2020-10-27 04:21:12,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2225 states. [2020-10-27 04:21:12,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2225 states to 2225 states and 3459 transitions. [2020-10-27 04:21:12,957 INFO L78 Accepts]: Start accepts. Automaton has 2225 states and 3459 transitions. Word has length 149 [2020-10-27 04:21:12,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:21:12,958 INFO L481 AbstractCegarLoop]: Abstraction has 2225 states and 3459 transitions. [2020-10-27 04:21:12,958 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 04:21:12,958 INFO L276 IsEmpty]: Start isEmpty. Operand 2225 states and 3459 transitions. [2020-10-27 04:21:12,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-10-27 04:21:12,964 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:21:12,965 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:21:12,965 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 04:21:12,965 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:21:12,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:21:12,966 INFO L82 PathProgramCache]: Analyzing trace with hash 2090922968, now seen corresponding path program 1 times [2020-10-27 04:21:12,966 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:21:12,967 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1921468459] [2020-10-27 04:21:12,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:21:13,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:21:13,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:21:13,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:21:13,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:21:13,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:21:13,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:21:14,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:21:18,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:21:18,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-27 04:21:18,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 04:21:18,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5046 [2020-10-27 04:21:18,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:21:18,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 04:21:18,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 04:21:18,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-10-27 04:21:18,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:21:18,691 WARN L193 SmtUtils]: Spent 510.00 ms on a formula simplification that was a NOOP. DAG size: 268 [2020-10-27 04:21:18,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:21:18,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:21:18,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:21:18,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:21:18,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:21:18,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:21:18,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-27 04:21:18,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:21:18,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:21:18,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:21:18,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 04:21:18,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:21:18,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:21:18,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:21:18,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:21:18,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:21:18,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-27 04:21:18,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:21:18,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 174 [2020-10-27 04:21:18,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:21:18,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:21:18,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:21:18,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-27 04:21:18,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:21:19,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-27 04:21:19,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:21:19,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:21:19,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:21:19,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:21:19,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:21:19,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:21:19,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:21:19,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:21:19,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:21:19,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:21:19,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:21:19,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-27 04:21:19,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:21:19,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:21:19,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:21:19,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 04:21:19,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:21:19,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 04:21:19,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:21:19,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 04:21:19,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:21:19,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 04:21:19,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:21:19,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-27 04:21:19,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:21:19,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:21:19,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:21:19,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:21:19,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:21:19,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:21:19,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:21:19,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:21:19,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:21:19,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:21:19,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:21:19,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-27 04:21:19,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:21:19,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:21:19,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:21:19,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:21:19,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:21:19,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:21:19,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:21:19,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:21:19,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:21:19,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:21:19,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:21:19,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-27 04:21:19,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:21:19,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:21:19,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:21:19,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:21:19,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:21:19,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:21:19,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:21:19,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:21:19,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:21:19,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:21:19,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:21:19,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-10-27 04:21:19,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:21:19,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:21:19,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:21:19,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:21:19,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:21:19,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 04:21:19,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:21:19,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:21:19,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:21:19,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:21:19,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:21:19,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:21:19,447 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1921468459] [2020-10-27 04:21:19,447 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:21:19,447 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-10-27 04:21:19,448 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320263615] [2020-10-27 04:21:19,448 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-27 04:21:19,448 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:21:19,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-27 04:21:19,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2020-10-27 04:21:19,449 INFO L87 Difference]: Start difference. First operand 2225 states and 3459 transitions. Second operand 15 states. [2020-10-27 04:21:20,111 WARN L193 SmtUtils]: Spent 548.00 ms on a formula simplification that was a NOOP. DAG size: 274 [2020-10-27 04:21:20,715 WARN L193 SmtUtils]: Spent 555.00 ms on a formula simplification that was a NOOP. DAG size: 272 [2020-10-27 04:21:23,633 WARN L193 SmtUtils]: Spent 542.00 ms on a formula simplification that was a NOOP. DAG size: 273 [2020-10-27 04:21:24,633 WARN L193 SmtUtils]: Spent 575.00 ms on a formula simplification that was a NOOP. DAG size: 276 [2020-10-27 04:21:24,823 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2020-10-27 04:21:25,054 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-27 04:21:25,295 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-27 04:21:25,809 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2020-10-27 04:21:26,280 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2020-10-27 04:21:26,850 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2020-10-27 04:21:27,738 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2020-10-27 04:21:27,939 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-27 04:21:28,143 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2020-10-27 04:21:28,348 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2020-10-27 04:21:28,683 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-27 04:21:29,128 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-27 04:21:29,491 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-27 04:21:29,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:21:29,689 INFO L93 Difference]: Finished difference Result 3806 states and 5989 transitions. [2020-10-27 04:21:29,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-27 04:21:29,695 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 150 [2020-10-27 04:21:29,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:21:29,717 INFO L225 Difference]: With dead ends: 3806 [2020-10-27 04:21:29,717 INFO L226 Difference]: Without dead ends: 3556 [2020-10-27 04:21:29,723 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=293, Invalid=829, Unknown=0, NotChecked=0, Total=1122 [2020-10-27 04:21:29,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3556 states. [2020-10-27 04:21:30,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3556 to 2397. [2020-10-27 04:21:30,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2397 states. [2020-10-27 04:21:30,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2397 states to 2397 states and 3732 transitions. [2020-10-27 04:21:30,026 INFO L78 Accepts]: Start accepts. Automaton has 2397 states and 3732 transitions. Word has length 150 [2020-10-27 04:21:30,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:21:30,026 INFO L481 AbstractCegarLoop]: Abstraction has 2397 states and 3732 transitions. [2020-10-27 04:21:30,027 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-27 04:21:30,027 INFO L276 IsEmpty]: Start isEmpty. Operand 2397 states and 3732 transitions. [2020-10-27 04:21:30,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-10-27 04:21:30,042 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:21:30,042 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:21:30,042 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 04:21:30,042 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:21:30,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:21:30,044 INFO L82 PathProgramCache]: Analyzing trace with hash 1696556182, now seen corresponding path program 1 times [2020-10-27 04:21:30,044 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:21:30,044 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1151200012] [2020-10-27 04:21:30,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:21:30,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:21:30,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:21:30,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:21:30,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:21:30,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:21:30,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:21:35,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:21:35,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-27 04:21:35,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 04:21:35,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-10-27 04:21:35,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:21:35,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:21:35,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 04:21:35,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-27 04:21:35,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:21:35,738 WARN L193 SmtUtils]: Spent 545.00 ms on a formula simplification that was a NOOP. DAG size: 268 [2020-10-27 04:21:35,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:21:35,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:21:35,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:21:35,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:21:35,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:21:35,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:21:35,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 04:21:35,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:21:35,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:21:35,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:21:35,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:21:35,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:21:35,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:21:35,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:21:35,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:21:35,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:21:35,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-27 04:21:35,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:21:35,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-27 04:21:35,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:21:35,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:21:35,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:21:35,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 04:21:35,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:21:35,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-27 04:21:35,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:21:35,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:21:35,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:21:35,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:21:35,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:21:35,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:21:35,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:21:35,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:21:35,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:21:35,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:21:35,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:21:35,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-27 04:21:35,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:21:35,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:21:35,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:21:35,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 04:21:35,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:21:35,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 04:21:35,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:21:35,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:21:35,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 04:21:35,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 04:21:35,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:21:36,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-27 04:21:36,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:21:36,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:21:36,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:21:36,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:21:36,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:21:36,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:21:36,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:21:36,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:21:36,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:21:36,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:21:36,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:21:36,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-27 04:21:36,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:21:36,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:21:36,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:21:36,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:21:36,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:21:36,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:21:36,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:21:36,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:21:36,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:21:36,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:21:36,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:21:36,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-27 04:21:36,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:21:36,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:21:36,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:21:36,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:21:36,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:21:36,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:21:36,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:21:36,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:21:36,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:21:36,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:21:36,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:21:36,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-10-27 04:21:36,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:21:36,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:21:36,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:21:36,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:21:36,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:21:36,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:21:36,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:21:36,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:21:36,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:21:36,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:21:36,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:21:36,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:21:36,239 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1151200012] [2020-10-27 04:21:36,240 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:21:36,240 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 04:21:36,240 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214337137] [2020-10-27 04:21:36,240 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 04:21:36,240 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:21:36,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 04:21:36,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-27 04:21:36,241 INFO L87 Difference]: Start difference. First operand 2397 states and 3732 transitions. Second operand 10 states. [2020-10-27 04:21:36,909 WARN L193 SmtUtils]: Spent 618.00 ms on a formula simplification that was a NOOP. DAG size: 272 [2020-10-27 04:21:37,496 WARN L193 SmtUtils]: Spent 549.00 ms on a formula simplification that was a NOOP. DAG size: 270 [2020-10-27 04:21:38,256 WARN L193 SmtUtils]: Spent 575.00 ms on a formula simplification that was a NOOP. DAG size: 276 [2020-10-27 04:21:38,873 WARN L193 SmtUtils]: Spent 594.00 ms on a formula simplification that was a NOOP. DAG size: 274 [2020-10-27 04:21:42,637 WARN L193 SmtUtils]: Spent 603.00 ms on a formula simplification that was a NOOP. DAG size: 274 [2020-10-27 04:21:42,942 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2020-10-27 04:21:43,179 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2020-10-27 04:21:43,988 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2020-10-27 04:21:44,208 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2020-10-27 04:21:44,788 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2020-10-27 04:21:45,094 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2020-10-27 04:21:45,732 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2020-10-27 04:21:45,989 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2020-10-27 04:21:47,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:21:47,188 INFO L93 Difference]: Finished difference Result 7351 states and 11464 transitions. [2020-10-27 04:21:47,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-27 04:21:47,189 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 150 [2020-10-27 04:21:47,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:21:47,214 INFO L225 Difference]: With dead ends: 7351 [2020-10-27 04:21:47,215 INFO L226 Difference]: Without dead ends: 5023 [2020-10-27 04:21:47,223 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=131, Invalid=375, Unknown=0, NotChecked=0, Total=506 [2020-10-27 04:21:47,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5023 states. [2020-10-27 04:21:47,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5023 to 4610. [2020-10-27 04:21:47,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4610 states. [2020-10-27 04:21:47,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4610 states to 4610 states and 7052 transitions. [2020-10-27 04:21:47,749 INFO L78 Accepts]: Start accepts. Automaton has 4610 states and 7052 transitions. Word has length 150 [2020-10-27 04:21:47,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:21:47,750 INFO L481 AbstractCegarLoop]: Abstraction has 4610 states and 7052 transitions. [2020-10-27 04:21:47,750 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 04:21:47,750 INFO L276 IsEmpty]: Start isEmpty. Operand 4610 states and 7052 transitions. [2020-10-27 04:21:47,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-10-27 04:21:47,762 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:21:47,763 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:21:47,763 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 04:21:47,763 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:21:47,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:21:47,763 INFO L82 PathProgramCache]: Analyzing trace with hash 2071935322, now seen corresponding path program 1 times [2020-10-27 04:21:47,764 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:21:47,764 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1045515741] [2020-10-27 04:21:47,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:21:47,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:21:47,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:21:47,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:21:47,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:21:48,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:21:50,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:21:52,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:21:52,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-10-27 04:21:52,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 04:21:52,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-27 04:21:52,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:21:52,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:21:52,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 04:21:52,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-27 04:21:52,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:21:53,444 WARN L193 SmtUtils]: Spent 540.00 ms on a formula simplification that was a NOOP. DAG size: 268 [2020-10-27 04:21:53,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:21:53,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:21:53,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:21:53,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:21:53,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:21:53,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:21:53,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 04:21:53,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:21:53,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:21:53,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:21:53,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:21:53,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:21:53,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:21:53,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:21:53,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:21:53,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:21:53,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-27 04:21:53,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:21:53,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-27 04:21:53,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:21:53,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:21:53,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:21:53,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 04:21:53,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:21:53,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-27 04:21:53,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:21:53,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:21:53,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:21:53,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:21:53,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:21:53,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:21:53,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:21:53,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:21:53,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:21:53,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:21:53,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:21:53,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-27 04:21:53,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:21:53,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:21:53,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:21:53,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 04:21:53,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:21:53,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 04:21:53,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:21:53,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:21:53,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 04:21:53,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 04:21:53,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:21:53,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-10-27 04:21:53,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:21:53,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:21:53,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:21:53,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:21:53,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:21:53,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:21:53,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:21:53,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:21:53,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:21:53,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:21:53,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:21:53,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-27 04:21:53,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:21:53,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:21:53,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:21:53,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:21:53,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:21:53,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:21:53,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:21:53,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:21:53,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:21:53,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:21:53,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:21:53,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-10-27 04:21:53,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:21:53,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:21:53,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:21:53,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:21:53,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:21:53,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:21:53,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:21:53,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:21:53,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:21:53,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:21:53,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:21:53,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-27 04:21:53,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:21:53,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:21:53,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:21:53,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:21:53,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:21:53,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:21:53,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:21:53,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:21:53,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:21:53,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:21:53,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:21:54,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:21:54,090 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1045515741] [2020-10-27 04:21:54,091 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:21:54,091 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 04:21:54,091 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953309792] [2020-10-27 04:21:54,091 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 04:21:54,091 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:21:54,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 04:21:54,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-27 04:21:54,092 INFO L87 Difference]: Start difference. First operand 4610 states and 7052 transitions. Second operand 10 states. [2020-10-27 04:21:54,810 WARN L193 SmtUtils]: Spent 659.00 ms on a formula simplification that was a NOOP. DAG size: 272 [2020-10-27 04:21:55,509 WARN L193 SmtUtils]: Spent 658.00 ms on a formula simplification that was a NOOP. DAG size: 278 [2020-10-27 04:21:56,449 WARN L193 SmtUtils]: Spent 641.00 ms on a formula simplification that was a NOOP. DAG size: 282 [2020-10-27 04:21:57,676 WARN L193 SmtUtils]: Spent 1.20 s on a formula simplification. DAG size of input: 280 DAG size of output: 276 [2020-10-27 04:22:03,206 WARN L193 SmtUtils]: Spent 552.00 ms on a formula simplification that was a NOOP. DAG size: 274 [2020-10-27 04:22:03,544 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2020-10-27 04:22:03,778 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 04:22:04,121 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2020-10-27 04:22:04,768 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2020-10-27 04:22:05,121 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2020-10-27 04:22:05,278 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 04:22:05,851 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2020-10-27 04:22:06,387 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2020-10-27 04:22:06,576 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 04:22:07,114 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2020-10-27 04:22:07,534 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2020-10-27 04:22:07,693 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 04:22:09,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:22:09,301 INFO L93 Difference]: Finished difference Result 17341 states and 26530 transitions. [2020-10-27 04:22:09,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-27 04:22:09,303 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 151 [2020-10-27 04:22:09,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:22:09,358 INFO L225 Difference]: With dead ends: 17341 [2020-10-27 04:22:09,358 INFO L226 Difference]: Without dead ends: 13020 [2020-10-27 04:22:09,375 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=183, Invalid=519, Unknown=0, NotChecked=0, Total=702 [2020-10-27 04:22:09,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13020 states. [2020-10-27 04:22:10,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13020 to 12192. [2020-10-27 04:22:10,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12192 states. [2020-10-27 04:22:10,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12192 states to 12192 states and 18438 transitions. [2020-10-27 04:22:10,981 INFO L78 Accepts]: Start accepts. Automaton has 12192 states and 18438 transitions. Word has length 151 [2020-10-27 04:22:10,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:22:10,982 INFO L481 AbstractCegarLoop]: Abstraction has 12192 states and 18438 transitions. [2020-10-27 04:22:10,982 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 04:22:10,982 INFO L276 IsEmpty]: Start isEmpty. Operand 12192 states and 18438 transitions. [2020-10-27 04:22:11,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-10-27 04:22:11,014 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:22:11,014 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:22:11,015 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 04:22:11,015 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:22:11,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:22:11,015 INFO L82 PathProgramCache]: Analyzing trace with hash 630235831, now seen corresponding path program 1 times [2020-10-27 04:22:11,016 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:22:11,016 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1448463246] [2020-10-27 04:22:11,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:22:11,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:22:11,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:22:11,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:22:11,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:22:11,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:22:11,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:22:16,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:22:16,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-10-27 04:22:16,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 04:22:16,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-27 04:22:16,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:22:16,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 04:22:16,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 04:22:16,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-27 04:22:16,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:22:16,729 WARN L193 SmtUtils]: Spent 573.00 ms on a formula simplification that was a NOOP. DAG size: 268 [2020-10-27 04:22:16,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:22:16,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:22:16,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:22:16,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:22:16,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:22:16,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:22:16,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-27 04:22:16,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:22:16,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:22:16,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:22:16,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 04:22:16,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:22:16,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:22:16,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:22:16,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:22:16,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:22:16,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-27 04:22:16,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:22:16,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-27 04:22:16,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:22:16,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:22:16,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:22:16,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-27 04:22:16,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:22:16,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-27 04:22:16,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:22:16,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:22:16,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:22:16,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:22:16,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:22:16,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 04:22:16,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:22:16,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:22:16,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:22:16,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:22:16,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:22:17,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-27 04:22:17,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:22:17,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:22:17,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:22:17,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 04:22:17,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:22:17,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 04:22:17,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:22:17,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:22:17,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:22:17,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 04:22:17,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:22:17,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-10-27 04:22:17,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:22:17,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:22:17,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:22:17,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:22:17,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:22:17,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:22:17,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:22:17,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:22:17,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:22:17,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:22:17,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:22:17,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-27 04:22:17,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:22:17,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:22:17,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:22:17,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:22:17,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:22:17,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:22:17,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:22:17,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:22:17,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:22:17,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:22:17,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:22:17,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-10-27 04:22:17,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:22:17,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:22:17,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:22:17,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:22:17,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:22:17,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:22:17,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:22:17,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:22:17,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:22:17,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:22:17,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:22:17,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-27 04:22:17,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:22:17,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:22:17,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:22:17,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:22:17,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:22:17,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 04:22:17,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:22:17,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:22:17,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:22:17,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:22:17,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:22:17,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:22:17,288 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1448463246] [2020-10-27 04:22:17,288 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:22:17,288 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-27 04:22:17,288 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841538082] [2020-10-27 04:22:17,289 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-27 04:22:17,289 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:22:17,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-27 04:22:17,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2020-10-27 04:22:17,290 INFO L87 Difference]: Start difference. First operand 12192 states and 18438 transitions. Second operand 14 states. [2020-10-27 04:22:18,486 WARN L193 SmtUtils]: Spent 1.11 s on a formula simplification. DAG size of input: 276 DAG size of output: 274 [2020-10-27 04:22:19,074 WARN L193 SmtUtils]: Spent 550.00 ms on a formula simplification that was a NOOP. DAG size: 272 [2020-10-27 04:22:22,283 WARN L193 SmtUtils]: Spent 531.00 ms on a formula simplification that was a NOOP. DAG size: 273 [2020-10-27 04:22:23,905 WARN L193 SmtUtils]: Spent 1.17 s on a formula simplification. DAG size of input: 277 DAG size of output: 275 [2020-10-27 04:22:24,243 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 124 [2020-10-27 04:22:24,582 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 120 [2020-10-27 04:22:25,057 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 118 [2020-10-27 04:22:25,518 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 117 [2020-10-27 04:22:25,829 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 118 [2020-10-27 04:22:26,534 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 117 [2020-10-27 04:22:26,917 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 118 [2020-10-27 04:22:27,733 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 117 [2020-10-27 04:22:28,171 WARN L193 SmtUtils]: Spent 351.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 118 [2020-10-27 04:22:29,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:22:29,276 INFO L93 Difference]: Finished difference Result 16758 states and 25479 transitions. [2020-10-27 04:22:29,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-27 04:22:29,277 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 151 [2020-10-27 04:22:29,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:22:29,320 INFO L225 Difference]: With dead ends: 16758 [2020-10-27 04:22:29,320 INFO L226 Difference]: Without dead ends: 13778 [2020-10-27 04:22:29,334 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=225, Invalid=587, Unknown=0, NotChecked=0, Total=812 [2020-10-27 04:22:29,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13778 states. [2020-10-27 04:22:30,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13778 to 12192. [2020-10-27 04:22:30,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12192 states. [2020-10-27 04:22:30,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12192 states to 12192 states and 18394 transitions. [2020-10-27 04:22:30,663 INFO L78 Accepts]: Start accepts. Automaton has 12192 states and 18394 transitions. Word has length 151 [2020-10-27 04:22:30,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:22:30,663 INFO L481 AbstractCegarLoop]: Abstraction has 12192 states and 18394 transitions. [2020-10-27 04:22:30,664 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-27 04:22:30,664 INFO L276 IsEmpty]: Start isEmpty. Operand 12192 states and 18394 transitions. [2020-10-27 04:22:30,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-10-27 04:22:30,694 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:22:30,694 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:22:30,694 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 04:22:30,694 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:22:30,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:22:30,695 INFO L82 PathProgramCache]: Analyzing trace with hash 1024602617, now seen corresponding path program 1 times [2020-10-27 04:22:30,695 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:22:30,695 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [536272444] [2020-10-27 04:22:30,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:22:30,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:22:30,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:22:30,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:22:30,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:22:31,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:22:32,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:22:35,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:22:35,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-10-27 04:22:35,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 04:22:35,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-27 04:22:35,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:22:35,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:22:35,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 04:22:35,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-27 04:22:35,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:22:36,431 WARN L193 SmtUtils]: Spent 570.00 ms on a formula simplification that was a NOOP. DAG size: 268 [2020-10-27 04:22:36,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:22:36,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:22:36,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:22:36,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:22:36,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:22:36,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:22:36,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 04:22:36,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:22:36,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:22:36,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:22:36,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:22:36,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:22:36,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:22:36,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:22:36,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:22:36,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:22:36,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-27 04:22:36,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:22:36,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-27 04:22:36,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:22:36,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:22:36,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:22:36,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 04:22:36,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:22:36,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-27 04:22:36,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:22:36,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:22:36,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:22:36,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:22:36,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:22:36,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:22:36,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:22:36,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:22:36,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:22:36,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:22:36,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:22:36,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-27 04:22:36,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:22:36,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:22:36,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:22:36,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 04:22:36,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:22:36,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 04:22:36,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:22:36,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:22:36,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 04:22:36,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 04:22:36,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:22:36,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-10-27 04:22:36,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:22:36,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:22:36,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:22:36,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:22:36,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:22:36,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:22:36,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:22:36,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:22:36,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:22:36,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:22:36,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:22:36,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-27 04:22:36,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:22:36,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:22:36,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:22:36,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:22:36,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:22:36,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:22:36,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:22:36,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:22:36,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:22:36,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:22:36,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:22:36,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-10-27 04:22:36,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:22:36,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:22:36,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:22:36,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:22:36,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:22:36,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:22:36,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:22:36,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:22:36,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:22:36,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:22:36,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:22:36,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-27 04:22:36,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:22:36,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:22:36,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:22:36,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:22:36,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:22:36,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 04:22:36,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:22:36,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:22:36,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:22:36,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:22:36,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:22:36,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:22:36,943 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [536272444] [2020-10-27 04:22:36,943 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:22:36,943 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 04:22:36,943 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925062149] [2020-10-27 04:22:36,944 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 04:22:36,944 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:22:36,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 04:22:36,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-27 04:22:36,945 INFO L87 Difference]: Start difference. First operand 12192 states and 18394 transitions. Second operand 10 states. [2020-10-27 04:22:37,607 WARN L193 SmtUtils]: Spent 593.00 ms on a formula simplification that was a NOOP. DAG size: 272 [2020-10-27 04:22:38,218 WARN L193 SmtUtils]: Spent 572.00 ms on a formula simplification that was a NOOP. DAG size: 270 [2020-10-27 04:22:38,816 WARN L193 SmtUtils]: Spent 554.00 ms on a formula simplification that was a NOOP. DAG size: 274 [2020-10-27 04:22:39,450 WARN L193 SmtUtils]: Spent 610.00 ms on a formula simplification that was a NOOP. DAG size: 276 [2020-10-27 04:22:44,079 WARN L193 SmtUtils]: Spent 541.00 ms on a formula simplification that was a NOOP. DAG size: 274 [2020-10-27 04:22:44,504 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2020-10-27 04:22:44,745 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2020-10-27 04:22:45,495 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2020-10-27 04:22:45,708 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2020-10-27 04:22:46,394 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2020-10-27 04:22:46,722 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2020-10-27 04:22:47,543 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2020-10-27 04:22:47,884 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2020-10-27 04:22:49,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:22:49,911 INFO L93 Difference]: Finished difference Result 37559 states and 56809 transitions. [2020-10-27 04:22:49,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-27 04:22:49,917 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 151 [2020-10-27 04:22:49,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:22:50,030 INFO L225 Difference]: With dead ends: 37559 [2020-10-27 04:22:50,030 INFO L226 Difference]: Without dead ends: 25386 [2020-10-27 04:22:50,074 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=131, Invalid=375, Unknown=0, NotChecked=0, Total=506 [2020-10-27 04:22:50,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25386 states. [2020-10-27 04:22:52,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25386 to 24127. [2020-10-27 04:22:52,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24127 states. [2020-10-27 04:22:52,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24127 states to 24127 states and 35917 transitions. [2020-10-27 04:22:52,342 INFO L78 Accepts]: Start accepts. Automaton has 24127 states and 35917 transitions. Word has length 151 [2020-10-27 04:22:52,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:22:52,342 INFO L481 AbstractCegarLoop]: Abstraction has 24127 states and 35917 transitions. [2020-10-27 04:22:52,342 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 04:22:52,342 INFO L276 IsEmpty]: Start isEmpty. Operand 24127 states and 35917 transitions. [2020-10-27 04:22:52,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-27 04:22:52,382 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:22:52,382 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:22:52,382 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 04:22:52,382 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:22:52,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:22:52,383 INFO L82 PathProgramCache]: Analyzing trace with hash -1712011524, now seen corresponding path program 1 times [2020-10-27 04:22:52,383 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:22:52,383 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1731531508] [2020-10-27 04:22:52,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:22:52,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:22:52,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:22:52,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:22:52,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:22:52,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:22:52,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:22:53,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:22:56,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:22:56,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:22:57,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:22:57,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-27 04:22:57,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 04:22:57,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-27 04:22:57,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:22:57,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 04:22:57,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 04:22:57,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-27 04:22:57,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:22:58,091 WARN L193 SmtUtils]: Spent 577.00 ms on a formula simplification that was a NOOP. DAG size: 268 [2020-10-27 04:22:58,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:22:58,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:22:58,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:22:58,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:22:58,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:22:58,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:22:58,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-27 04:22:58,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:22:58,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:22:58,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:22:58,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 04:22:58,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:22:58,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:22:58,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:22:58,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:22:58,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:22:58,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-27 04:22:58,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:22:58,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-27 04:22:58,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:22:58,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:22:58,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:22:58,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-27 04:22:58,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:22:58,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-27 04:22:58,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:22:58,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:22:58,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:22:58,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:22:58,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:22:58,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:22:58,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:22:58,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:22:58,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:22:58,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:22:58,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:22:58,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-27 04:22:58,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:22:58,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:22:58,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:22:58,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 04:22:58,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:22:58,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 04:22:58,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:22:58,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 04:22:58,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:22:58,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 04:22:58,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:22:58,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-10-27 04:22:58,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:22:58,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:22:58,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:22:58,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:22:58,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:22:58,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:22:58,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:22:58,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:22:58,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:22:58,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:22:58,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:22:58,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-27 04:22:58,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:22:58,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:22:58,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:22:58,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:22:58,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:22:58,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:22:58,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:22:58,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:22:58,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:22:58,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:22:58,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:22:58,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-27 04:22:58,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:22:58,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:22:58,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:22:58,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:22:58,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:22:58,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:22:58,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:22:58,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:22:58,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:22:58,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:22:58,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:22:58,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-27 04:22:58,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:22:58,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:22:58,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:22:58,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:22:58,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:22:58,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 04:22:58,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:22:58,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:22:58,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:22:58,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:22:58,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:22:58,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:22:58,735 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1731531508] [2020-10-27 04:22:58,735 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:22:58,735 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-10-27 04:22:58,736 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853253476] [2020-10-27 04:22:58,736 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-27 04:22:58,736 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:22:58,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-27 04:22:58,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2020-10-27 04:22:58,737 INFO L87 Difference]: Start difference. First operand 24127 states and 35917 transitions. Second operand 16 states. [2020-10-27 04:22:59,444 WARN L193 SmtUtils]: Spent 604.00 ms on a formula simplification that was a NOOP. DAG size: 274 [2020-10-27 04:23:00,068 WARN L193 SmtUtils]: Spent 577.00 ms on a formula simplification that was a NOOP. DAG size: 272 [2020-10-27 04:23:03,990 WARN L193 SmtUtils]: Spent 594.00 ms on a formula simplification that was a NOOP. DAG size: 273 [2020-10-27 04:23:05,199 WARN L193 SmtUtils]: Spent 695.00 ms on a formula simplification that was a NOOP. DAG size: 276 [2020-10-27 04:23:05,420 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2020-10-27 04:23:05,677 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2020-10-27 04:23:06,024 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2020-10-27 04:23:06,574 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2020-10-27 04:23:07,162 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2020-10-27 04:23:07,817 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2020-10-27 04:23:09,232 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2020-10-27 04:23:09,491 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2020-10-27 04:23:09,855 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-27 04:23:10,029 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-27 04:23:10,261 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-27 04:23:10,437 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-27 04:23:10,954 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-27 04:23:11,392 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-27 04:23:11,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:23:11,846 INFO L93 Difference]: Finished difference Result 34758 states and 52413 transitions. [2020-10-27 04:23:11,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-27 04:23:11,847 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 152 [2020-10-27 04:23:11,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:23:11,942 INFO L225 Difference]: With dead ends: 34758 [2020-10-27 04:23:11,942 INFO L226 Difference]: Without dead ends: 33219 [2020-10-27 04:23:11,955 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=305, Invalid=955, Unknown=0, NotChecked=0, Total=1260 [2020-10-27 04:23:11,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33219 states. [2020-10-27 04:23:14,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33219 to 23971. [2020-10-27 04:23:14,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23971 states. [2020-10-27 04:23:14,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23971 states to 23971 states and 35581 transitions. [2020-10-27 04:23:14,129 INFO L78 Accepts]: Start accepts. Automaton has 23971 states and 35581 transitions. Word has length 152 [2020-10-27 04:23:14,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:23:14,129 INFO L481 AbstractCegarLoop]: Abstraction has 23971 states and 35581 transitions. [2020-10-27 04:23:14,129 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-27 04:23:14,129 INFO L276 IsEmpty]: Start isEmpty. Operand 23971 states and 35581 transitions. [2020-10-27 04:23:14,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-27 04:23:14,158 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:23:14,159 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:23:14,159 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 04:23:14,159 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:23:14,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:23:14,159 INFO L82 PathProgramCache]: Analyzing trace with hash -2106378310, now seen corresponding path program 1 times [2020-10-27 04:23:14,160 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:23:14,160 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1868068926] [2020-10-27 04:23:14,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:23:14,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:23:14,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:23:14,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:23:14,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:23:14,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:23:14,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:23:19,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:23:19,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-27 04:23:19,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 04:23:19,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-27 04:23:19,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:23:19,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 04:23:19,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 04:23:19,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-10-27 04:23:19,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:23:19,833 WARN L193 SmtUtils]: Spent 530.00 ms on a formula simplification that was a NOOP. DAG size: 268 [2020-10-27 04:23:19,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:23:19,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:23:19,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:23:19,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:23:19,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:23:19,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:23:19,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-27 04:23:19,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:23:19,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:23:19,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:23:19,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 04:23:19,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:23:19,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:23:19,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:23:19,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:23:20,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:23:20,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-27 04:23:20,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:23:20,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-27 04:23:20,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:23:20,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:23:20,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:23:20,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-27 04:23:20,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:23:20,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-27 04:23:20,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:23:20,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:23:20,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:23:20,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:23:20,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:23:20,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 04:23:20,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:23:20,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:23:20,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:23:20,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:23:20,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:23:20,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-27 04:23:20,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:23:20,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:23:20,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:23:20,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 04:23:20,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:23:20,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 04:23:20,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:23:20,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 04:23:20,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:23:20,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 04:23:20,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:23:20,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-10-27 04:23:20,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:23:20,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:23:20,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:23:20,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:23:20,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:23:20,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:23:20,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:23:20,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:23:20,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:23:20,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:23:20,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:23:20,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-27 04:23:20,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:23:20,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:23:20,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:23:20,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:23:20,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:23:20,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:23:20,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:23:20,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:23:20,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:23:20,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:23:20,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:23:20,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-27 04:23:20,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:23:20,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:23:20,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:23:20,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:23:20,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:23:20,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:23:20,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:23:20,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:23:20,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:23:20,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:23:20,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:23:20,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-27 04:23:20,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:23:20,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:23:20,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:23:20,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:23:20,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:23:20,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 04:23:20,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:23:20,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:23:20,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:23:20,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:23:20,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:23:20,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:23:20,418 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1868068926] [2020-10-27 04:23:20,418 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:23:20,418 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-10-27 04:23:20,419 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841659687] [2020-10-27 04:23:20,419 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-27 04:23:20,419 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:23:20,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-27 04:23:20,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2020-10-27 04:23:20,420 INFO L87 Difference]: Start difference. First operand 23971 states and 35581 transitions. Second operand 15 states. [2020-10-27 04:23:21,711 WARN L193 SmtUtils]: Spent 1.20 s on a formula simplification. DAG size of input: 275 DAG size of output: 274 [2020-10-27 04:23:22,288 WARN L193 SmtUtils]: Spent 529.00 ms on a formula simplification that was a NOOP. DAG size: 272 [2020-10-27 04:23:26,122 WARN L193 SmtUtils]: Spent 536.00 ms on a formula simplification that was a NOOP. DAG size: 273 [2020-10-27 04:23:27,742 WARN L193 SmtUtils]: Spent 1.13 s on a formula simplification. DAG size of input: 277 DAG size of output: 276 [2020-10-27 04:23:28,126 WARN L193 SmtUtils]: Spent 336.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 125 [2020-10-27 04:23:28,536 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 126 [2020-10-27 04:23:28,925 WARN L193 SmtUtils]: Spent 328.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 128 [2020-10-27 04:23:29,293 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 125 [2020-10-27 04:23:29,704 WARN L193 SmtUtils]: Spent 375.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 121 [2020-10-27 04:23:30,367 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 119 [2020-10-27 04:23:31,041 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 119 [2020-10-27 04:23:31,782 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 119 [2020-10-27 04:23:33,142 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 123 [2020-10-27 04:23:33,782 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 117 [2020-10-27 04:23:34,529 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 117 [2020-10-27 04:23:35,177 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 117