/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.1.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 14:03:09,603 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 14:03:09,606 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 14:03:09,660 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 14:03:09,661 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 14:03:09,667 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 14:03:09,670 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 14:03:09,674 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 14:03:09,678 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 14:03:09,684 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 14:03:09,686 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 14:03:09,687 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 14:03:09,687 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 14:03:09,691 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 14:03:09,694 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 14:03:09,697 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 14:03:09,698 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 14:03:09,702 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 14:03:09,709 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 14:03:09,717 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 14:03:09,719 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 14:03:09,721 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 14:03:09,723 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 14:03:09,726 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 14:03:09,735 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 14:03:09,736 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 14:03:09,736 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 14:03:09,738 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 14:03:09,739 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 14:03:09,740 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 14:03:09,741 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 14:03:09,742 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 14:03:09,744 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 14:03:09,744 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 14:03:09,746 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 14:03:09,746 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 14:03:09,747 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 14:03:09,747 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 14:03:09,747 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 14:03:09,748 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 14:03:09,749 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 14:03:09,753 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 [2020-10-29 14:03:09,800 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 14:03:09,800 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 14:03:09,802 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 14:03:09,802 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 14:03:09,802 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 14:03:09,802 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 14:03:09,803 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 14:03:09,803 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 14:03:09,803 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 14:03:09,803 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 14:03:09,803 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 14:03:09,804 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 14:03:09,804 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 14:03:09,804 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 14:03:09,804 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 14:03:09,804 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 14:03:09,804 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 14:03:09,805 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 14:03:09,805 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 14:03:09,805 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 14:03:09,805 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 14:03:09,806 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 14:03:09,806 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 14:03:09,806 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 14:03:09,806 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 14:03:09,806 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 14:03:09,807 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 14:03:09,807 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 14:03:09,807 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 14:03:09,807 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 14:03:10,174 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 14:03:10,208 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 14:03:10,211 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 14:03:10,212 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 14:03:10,213 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 14:03:10,214 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.1.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2020-10-29 14:03:10,298 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a400b6260/b7919615034f4cddb274c201acf2ff51/FLAG04f05ee1e [2020-10-29 14:03:11,118 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 14:03:11,122 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.1.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2020-10-29 14:03:11,147 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a400b6260/b7919615034f4cddb274c201acf2ff51/FLAG04f05ee1e [2020-10-29 14:03:11,356 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a400b6260/b7919615034f4cddb274c201acf2ff51 [2020-10-29 14:03:11,359 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 14:03:11,367 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 14:03:11,369 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 14:03:11,369 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 14:03:11,373 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 14:03:11,375 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 02:03:11" (1/1) ... [2020-10-29 14:03:11,378 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4031dcc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:03:11, skipping insertion in model container [2020-10-29 14:03:11,379 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 02:03:11" (1/1) ... [2020-10-29 14:03:11,388 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 14:03:11,441 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 14:03:11,892 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 14:03:11,914 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 14:03:12,079 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 14:03:12,127 INFO L208 MainTranslator]: Completed translation [2020-10-29 14:03:12,128 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:03:12 WrapperNode [2020-10-29 14:03:12,128 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 14:03:12,130 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 14:03:12,130 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 14:03:12,130 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 14:03:12,145 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:03:12" (1/1) ... [2020-10-29 14:03:12,147 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:03:12" (1/1) ... [2020-10-29 14:03:12,175 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:03:12" (1/1) ... [2020-10-29 14:03:12,175 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:03:12" (1/1) ... [2020-10-29 14:03:12,243 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:03:12" (1/1) ... [2020-10-29 14:03:12,273 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:03:12" (1/1) ... [2020-10-29 14:03:12,288 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:03:12" (1/1) ... [2020-10-29 14:03:12,302 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 14:03:12,304 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 14:03:12,304 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 14:03:12,304 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 14:03:12,310 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:03:12" (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 [2020-10-29 14:03:12,394 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 14:03:12,394 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 14:03:12,394 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 14:03:12,394 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-29 14:03:12,395 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 14:03:12,395 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 14:03:12,395 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 14:03:12,395 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 14:03:12,395 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 14:03:12,396 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-29 14:03:12,396 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-29 14:03:12,396 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-29 14:03:12,396 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-29 14:03:12,396 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-29 14:03:12,396 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-29 14:03:12,397 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-29 14:03:12,397 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-29 14:03:12,397 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-29 14:03:12,397 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-29 14:03:12,397 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-29 14:03:12,397 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-29 14:03:12,398 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 14:03:12,398 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 14:03:12,398 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 14:03:12,398 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 14:03:12,398 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 14:03:12,398 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 14:03:12,398 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 14:03:13,933 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 14:03:13,934 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-29 14:03:13,936 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 02:03:13 BoogieIcfgContainer [2020-10-29 14:03:13,937 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 14:03:13,939 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 14:03:13,939 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 14:03:13,943 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 14:03:13,943 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 02:03:11" (1/3) ... [2020-10-29 14:03:13,944 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41d0ee9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 02:03:13, skipping insertion in model container [2020-10-29 14:03:13,944 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:03:12" (2/3) ... [2020-10-29 14:03:13,945 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41d0ee9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 02:03:13, skipping insertion in model container [2020-10-29 14:03:13,945 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 02:03:13" (3/3) ... [2020-10-29 14:03:13,947 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.1.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2020-10-29 14:03:13,960 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 14:03:13,967 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 14:03:13,981 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 14:03:14,013 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 14:03:14,013 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 14:03:14,013 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 14:03:14,013 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 14:03:14,013 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 14:03:14,014 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 14:03:14,014 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 14:03:14,014 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 14:03:14,040 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states. [2020-10-29 14:03:14,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-29 14:03:14,058 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:03:14,059 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] [2020-10-29 14:03:14,059 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:03:14,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:03:14,066 INFO L82 PathProgramCache]: Analyzing trace with hash -249518888, now seen corresponding path program 1 times [2020-10-29 14:03:14,076 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:03:14,077 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [503805357] [2020-10-29 14:03:14,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:03:14,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:03:14,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:14,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:15,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:16,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:16,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:19,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:03:19,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-29 14:03:19,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 14:03:19,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5061 [2020-10-29 14:03:19,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:03:19,581 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:03:19,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:03:19,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-29 14:03:19,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 14:03:19,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 14:03:20,358 WARN L193 SmtUtils]: Spent 563.00 ms on a formula simplification that was a NOOP. DAG size: 292 [2020-10-29 14:03:20,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:03:20,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:03:20,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:20,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:03:20,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:03:20,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:03:20,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-29 14:03:20,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:03:20,398 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:03:20,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:03:20,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:03:20,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:03:20,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:03:20,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:03:20,461 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [503805357] [2020-10-29 14:03:20,464 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:03:20,464 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 14:03:20,465 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602226080] [2020-10-29 14:03:20,471 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 14:03:20,471 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:03:20,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 14:03:20,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 14:03:20,490 INFO L87 Difference]: Start difference. First operand 339 states. Second operand 4 states. [2020-10-29 14:03:21,105 WARN L193 SmtUtils]: Spent 525.00 ms on a formula simplification that was a NOOP. DAG size: 294 [2020-10-29 14:03:23,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:03:23,660 INFO L93 Difference]: Finished difference Result 629 states and 1082 transitions. [2020-10-29 14:03:23,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 14:03:23,662 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 111 [2020-10-29 14:03:23,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:03:23,681 INFO L225 Difference]: With dead ends: 629 [2020-10-29 14:03:23,681 INFO L226 Difference]: Without dead ends: 467 [2020-10-29 14:03:23,686 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:03:23,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2020-10-29 14:03:23,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 464. [2020-10-29 14:03:23,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 464 states. [2020-10-29 14:03:23,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 464 states to 464 states and 772 transitions. [2020-10-29 14:03:23,792 INFO L78 Accepts]: Start accepts. Automaton has 464 states and 772 transitions. Word has length 111 [2020-10-29 14:03:23,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:03:23,793 INFO L481 AbstractCegarLoop]: Abstraction has 464 states and 772 transitions. [2020-10-29 14:03:23,793 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 14:03:23,793 INFO L276 IsEmpty]: Start isEmpty. Operand 464 states and 772 transitions. [2020-10-29 14:03:23,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-29 14:03:23,799 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:03:23,799 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] [2020-10-29 14:03:23,799 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 14:03:23,800 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:03:23,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:03:23,801 INFO L82 PathProgramCache]: Analyzing trace with hash -2068762622, now seen corresponding path program 1 times [2020-10-29 14:03:23,801 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:03:23,801 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [90674155] [2020-10-29 14:03:23,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:03:23,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:03:23,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:24,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:24,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:24,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:24,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:28,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:03:28,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-29 14:03:28,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 14:03:28,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-29 14:03:28,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:03:28,886 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:03:28,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:03:28,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:03:28,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-29 14:03:28,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:03:29,507 WARN L193 SmtUtils]: Spent 475.00 ms on a formula simplification that was a NOOP. DAG size: 292 [2020-10-29 14:03:29,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:03:29,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:03:29,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:29,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:03:29,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:03:29,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:03:29,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-29 14:03:29,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:03:29,558 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:03:29,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:03:29,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:03:29,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:03:29,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 14:03:29,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:03:29,649 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [90674155] [2020-10-29 14:03:29,649 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:03:29,649 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:03:29,651 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112726055] [2020-10-29 14:03:29,654 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:03:29,655 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:03:29,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:03:29,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:03:29,666 INFO L87 Difference]: Start difference. First operand 464 states and 772 transitions. Second operand 5 states. [2020-10-29 14:03:32,447 WARN L193 SmtUtils]: Spent 492.00 ms on a formula simplification that was a NOOP. DAG size: 298 [2020-10-29 14:03:32,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:03:32,610 INFO L93 Difference]: Finished difference Result 1353 states and 2255 transitions. [2020-10-29 14:03:32,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 14:03:32,611 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 114 [2020-10-29 14:03:32,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:03:32,629 INFO L225 Difference]: With dead ends: 1353 [2020-10-29 14:03:32,630 INFO L226 Difference]: Without dead ends: 902 [2020-10-29 14:03:32,636 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 14:03:32,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 902 states. [2020-10-29 14:03:32,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 902 to 899. [2020-10-29 14:03:32,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 899 states. [2020-10-29 14:03:32,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 899 states to 899 states and 1490 transitions. [2020-10-29 14:03:32,763 INFO L78 Accepts]: Start accepts. Automaton has 899 states and 1490 transitions. Word has length 114 [2020-10-29 14:03:32,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:03:32,764 INFO L481 AbstractCegarLoop]: Abstraction has 899 states and 1490 transitions. [2020-10-29 14:03:32,764 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:03:32,764 INFO L276 IsEmpty]: Start isEmpty. Operand 899 states and 1490 transitions. [2020-10-29 14:03:32,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-29 14:03:32,770 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:03:32,771 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] [2020-10-29 14:03:32,771 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 14:03:32,771 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:03:32,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:03:32,772 INFO L82 PathProgramCache]: Analyzing trace with hash -1577724816, now seen corresponding path program 1 times [2020-10-29 14:03:32,772 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:03:32,772 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [791830519] [2020-10-29 14:03:32,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:03:32,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:03:32,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:32,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:33,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:33,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:34,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:34,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:37,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:03:37,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-29 14:03:37,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 14:03:37,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5045 [2020-10-29 14:03:37,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:03:37,887 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:03:37,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:03:37,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:03:37,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-29 14:03:37,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:03:38,440 WARN L193 SmtUtils]: Spent 403.00 ms on a formula simplification that was a NOOP. DAG size: 292 [2020-10-29 14:03:38,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:03:38,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:03:38,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:38,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:03:38,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:03:38,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:03:38,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-29 14:03:38,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:03:38,490 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:03:38,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:03:38,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:03:38,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:03:38,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:03:38,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:03:38,560 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [791830519] [2020-10-29 14:03:38,560 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:03:38,560 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:03:38,561 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901962790] [2020-10-29 14:03:38,561 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:03:38,561 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:03:38,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:03:38,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:03:38,563 INFO L87 Difference]: Start difference. First operand 899 states and 1490 transitions. Second operand 5 states. [2020-10-29 14:03:41,544 WARN L193 SmtUtils]: Spent 500.00 ms on a formula simplification that was a NOOP. DAG size: 298 [2020-10-29 14:03:41,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:03:41,700 INFO L93 Difference]: Finished difference Result 2547 states and 4213 transitions. [2020-10-29 14:03:41,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 14:03:41,700 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 115 [2020-10-29 14:03:41,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:03:41,717 INFO L225 Difference]: With dead ends: 2547 [2020-10-29 14:03:41,717 INFO L226 Difference]: Without dead ends: 1720 [2020-10-29 14:03:41,721 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 14:03:41,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1720 states. [2020-10-29 14:03:41,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1720 to 1717. [2020-10-29 14:03:41,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1717 states. [2020-10-29 14:03:41,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1717 states to 1717 states and 2826 transitions. [2020-10-29 14:03:41,846 INFO L78 Accepts]: Start accepts. Automaton has 1717 states and 2826 transitions. Word has length 115 [2020-10-29 14:03:41,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:03:41,848 INFO L481 AbstractCegarLoop]: Abstraction has 1717 states and 2826 transitions. [2020-10-29 14:03:41,848 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:03:41,848 INFO L276 IsEmpty]: Start isEmpty. Operand 1717 states and 2826 transitions. [2020-10-29 14:03:41,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-29 14:03:41,856 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:03:41,862 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] [2020-10-29 14:03:41,862 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 14:03:41,863 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:03:41,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:03:41,864 INFO L82 PathProgramCache]: Analyzing trace with hash -791122200, now seen corresponding path program 1 times [2020-10-29 14:03:41,864 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:03:41,866 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [974028518] [2020-10-29 14:03:41,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:03:41,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:03:42,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:42,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:42,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:42,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:42,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:45,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:45,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:46,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:03:46,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-29 14:03:46,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 14:03:46,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-29 14:03:46,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:03:46,955 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:03:46,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:03:46,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:03:46,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-29 14:03:46,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:03:47,764 WARN L193 SmtUtils]: Spent 607.00 ms on a formula simplification that was a NOOP. DAG size: 292 [2020-10-29 14:03:47,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:03:47,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:03:47,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:47,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:03:47,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:03:47,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:03:47,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-29 14:03:47,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:03:47,818 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:03:47,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:03:47,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:03:47,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:03:47,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 14:03:47,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:03:47,902 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [974028518] [2020-10-29 14:03:47,903 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:03:47,903 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:03:47,904 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692829538] [2020-10-29 14:03:47,904 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:03:47,905 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:03:47,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:03:47,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:03:47,906 INFO L87 Difference]: Start difference. First operand 1717 states and 2826 transitions. Second operand 5 states. [2020-10-29 14:03:51,001 WARN L193 SmtUtils]: Spent 467.00 ms on a formula simplification that was a NOOP. DAG size: 298 [2020-10-29 14:03:51,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:03:51,162 INFO L93 Difference]: Finished difference Result 4925 states and 8092 transitions. [2020-10-29 14:03:51,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 14:03:51,163 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 115 [2020-10-29 14:03:51,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:03:51,182 INFO L225 Difference]: With dead ends: 4925 [2020-10-29 14:03:51,187 INFO L226 Difference]: Without dead ends: 3364 [2020-10-29 14:03:51,191 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 14:03:51,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3364 states. [2020-10-29 14:03:51,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3364 to 3361. [2020-10-29 14:03:51,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3361 states. [2020-10-29 14:03:51,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3361 states to 3361 states and 5504 transitions. [2020-10-29 14:03:51,468 INFO L78 Accepts]: Start accepts. Automaton has 3361 states and 5504 transitions. Word has length 115 [2020-10-29 14:03:51,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:03:51,468 INFO L481 AbstractCegarLoop]: Abstraction has 3361 states and 5504 transitions. [2020-10-29 14:03:51,468 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:03:51,468 INFO L276 IsEmpty]: Start isEmpty. Operand 3361 states and 5504 transitions. [2020-10-29 14:03:51,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-29 14:03:51,477 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:03:51,477 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] [2020-10-29 14:03:51,477 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 14:03:51,477 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:03:51,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:03:51,478 INFO L82 PathProgramCache]: Analyzing trace with hash -1388812432, now seen corresponding path program 1 times [2020-10-29 14:03:51,478 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:03:51,479 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1754991368] [2020-10-29 14:03:51,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:03:51,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:03:51,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:51,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:51,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:52,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:53,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:54,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:56,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:03:56,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-29 14:03:56,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 14:03:56,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5046 [2020-10-29 14:03:56,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:03:56,579 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:03:56,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:03:56,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:03:56,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-29 14:03:56,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:03:57,210 WARN L193 SmtUtils]: Spent 519.00 ms on a formula simplification that was a NOOP. DAG size: 292 [2020-10-29 14:03:57,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:03:57,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:03:57,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:57,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:03:57,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:03:57,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:03:57,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 14:03:57,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:03:57,243 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:03:57,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:03:57,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:03:57,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:03:57,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:03:57,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:03:57,299 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1754991368] [2020-10-29 14:03:57,299 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:03:57,299 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:03:57,299 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445876552] [2020-10-29 14:03:57,300 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:03:57,300 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:03:57,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:03:57,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:03:57,301 INFO L87 Difference]: Start difference. First operand 3361 states and 5504 transitions. Second operand 5 states. [2020-10-29 14:04:00,310 WARN L193 SmtUtils]: Spent 565.00 ms on a formula simplification that was a NOOP. DAG size: 298 [2020-10-29 14:04:00,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:04:00,491 INFO L93 Difference]: Finished difference Result 9763 states and 15968 transitions. [2020-10-29 14:04:00,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 14:04:00,492 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 116 [2020-10-29 14:04:00,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:04:00,527 INFO L225 Difference]: With dead ends: 9763 [2020-10-29 14:04:00,527 INFO L226 Difference]: Without dead ends: 6528 [2020-10-29 14:04:00,535 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 14:04:00,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6528 states. [2020-10-29 14:04:01,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6528 to 6525. [2020-10-29 14:04:01,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6525 states. [2020-10-29 14:04:01,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6525 states to 6525 states and 10614 transitions. [2020-10-29 14:04:01,034 INFO L78 Accepts]: Start accepts. Automaton has 6525 states and 10614 transitions. Word has length 116 [2020-10-29 14:04:01,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:04:01,035 INFO L481 AbstractCegarLoop]: Abstraction has 6525 states and 10614 transitions. [2020-10-29 14:04:01,035 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:04:01,035 INFO L276 IsEmpty]: Start isEmpty. Operand 6525 states and 10614 transitions. [2020-10-29 14:04:01,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-29 14:04:01,055 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:04:01,057 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] [2020-10-29 14:04:01,057 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 14:04:01,057 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:04:01,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:04:01,058 INFO L82 PathProgramCache]: Analyzing trace with hash 1963739809, now seen corresponding path program 1 times [2020-10-29 14:04:01,058 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:04:01,059 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1767927468] [2020-10-29 14:04:01,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:04:01,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:04:01,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:01,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:01,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:01,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:01,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:02,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:02,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:06,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:04:06,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-29 14:04:06,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 14:04:06,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-29 14:04:06,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:04:06,115 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:04:06,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:04:06,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:04:06,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-29 14:04:06,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:04:06,773 WARN L193 SmtUtils]: Spent 428.00 ms on a formula simplification that was a NOOP. DAG size: 292 [2020-10-29 14:04:06,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:04:06,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:04:06,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:06,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:04:06,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:04:06,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:04:06,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 14:04:06,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:04:06,804 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:04:06,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:04:06,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:04:06,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:04:06,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:04:06,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:04:06,870 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1767927468] [2020-10-29 14:04:06,871 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:04:06,871 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:04:06,871 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901970421] [2020-10-29 14:04:06,872 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:04:06,872 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:04:06,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:04:06,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:04:06,873 INFO L87 Difference]: Start difference. First operand 6525 states and 10614 transitions. Second operand 5 states. [2020-10-29 14:04:10,073 WARN L193 SmtUtils]: Spent 479.00 ms on a formula simplification that was a NOOP. DAG size: 298 [2020-10-29 14:04:10,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:04:10,324 INFO L93 Difference]: Finished difference Result 18804 states and 30516 transitions. [2020-10-29 14:04:10,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 14:04:10,332 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 116 [2020-10-29 14:04:10,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:04:10,414 INFO L225 Difference]: With dead ends: 18804 [2020-10-29 14:04:10,414 INFO L226 Difference]: Without dead ends: 12805 [2020-10-29 14:04:10,429 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 14:04:10,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12805 states. [2020-10-29 14:04:11,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12805 to 12802. [2020-10-29 14:04:11,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12802 states. [2020-10-29 14:04:11,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12802 states to 12802 states and 20696 transitions. [2020-10-29 14:04:11,650 INFO L78 Accepts]: Start accepts. Automaton has 12802 states and 20696 transitions. Word has length 116 [2020-10-29 14:04:11,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:04:11,650 INFO L481 AbstractCegarLoop]: Abstraction has 12802 states and 20696 transitions. [2020-10-29 14:04:11,650 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:04:11,651 INFO L276 IsEmpty]: Start isEmpty. Operand 12802 states and 20696 transitions. [2020-10-29 14:04:11,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-29 14:04:11,682 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:04:11,682 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] [2020-10-29 14:04:11,683 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 14:04:11,683 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:04:11,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:04:11,683 INFO L82 PathProgramCache]: Analyzing trace with hash 1101218170, now seen corresponding path program 1 times [2020-10-29 14:04:11,685 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:04:11,685 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [322965747] [2020-10-29 14:04:11,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:04:11,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:04:11,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:11,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:11,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:12,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:12,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:14,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:14,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:16,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:04:16,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-29 14:04:16,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 14:04:16,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-29 14:04:16,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:04:16,755 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:04:16,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:04:16,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:04:16,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-29 14:04:16,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:04:17,394 WARN L193 SmtUtils]: Spent 514.00 ms on a formula simplification that was a NOOP. DAG size: 292 [2020-10-29 14:04:17,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:04:17,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:04:17,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:17,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:04:17,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:04:17,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:04:17,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 14:04:17,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:04:17,419 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:04:17,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:04:17,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:04:17,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:04:17,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:04:17,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:04:17,485 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [322965747] [2020-10-29 14:04:17,485 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:04:17,485 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:04:17,485 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010692582] [2020-10-29 14:04:17,486 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:04:17,486 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:04:17,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:04:17,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:04:17,487 INFO L87 Difference]: Start difference. First operand 12802 states and 20696 transitions. Second operand 5 states. [2020-10-29 14:04:21,568 WARN L193 SmtUtils]: Spent 494.00 ms on a formula simplification that was a NOOP. DAG size: 298 [2020-10-29 14:04:22,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:04:22,039 INFO L93 Difference]: Finished difference Result 37088 states and 59948 transitions. [2020-10-29 14:04:22,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 14:04:22,040 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 117 [2020-10-29 14:04:22,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:04:22,104 INFO L225 Difference]: With dead ends: 37088 [2020-10-29 14:04:22,105 INFO L226 Difference]: Without dead ends: 24877 [2020-10-29 14:04:22,134 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 14:04:22,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24877 states. [2020-10-29 14:04:24,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24877 to 24874. [2020-10-29 14:04:24,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24874 states. [2020-10-29 14:04:24,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24874 states to 24874 states and 40040 transitions. [2020-10-29 14:04:24,072 INFO L78 Accepts]: Start accepts. Automaton has 24874 states and 40040 transitions. Word has length 117 [2020-10-29 14:04:24,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:04:24,073 INFO L481 AbstractCegarLoop]: Abstraction has 24874 states and 40040 transitions. [2020-10-29 14:04:24,073 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:04:24,073 INFO L276 IsEmpty]: Start isEmpty. Operand 24874 states and 40040 transitions. [2020-10-29 14:04:24,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-29 14:04:24,118 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:04:24,119 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] [2020-10-29 14:04:24,119 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 14:04:24,119 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:04:24,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:04:24,120 INFO L82 PathProgramCache]: Analyzing trace with hash -819315044, now seen corresponding path program 1 times [2020-10-29 14:04:24,120 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:04:24,120 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1040895222] [2020-10-29 14:04:24,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:04:24,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:04:24,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:24,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:24,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:24,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:24,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:25,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:25,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:29,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:04:29,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-29 14:04:29,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 14:04:29,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4937 [2020-10-29 14:04:29,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:04:29,098 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:04:29,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:04:29,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-29 14:04:29,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-29 14:04:29,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:04:29,643 WARN L193 SmtUtils]: Spent 499.00 ms on a formula simplification that was a NOOP. DAG size: 292 [2020-10-29 14:04:29,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:04:29,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:04:29,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:29,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:04:29,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:04:29,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:04:29,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 14:04:29,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:04:29,668 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:04:29,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:04:29,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:04:29,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:04:29,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:04:29,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:04:29,695 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1040895222] [2020-10-29 14:04:29,695 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:04:29,695 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 14:04:29,696 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426845683] [2020-10-29 14:04:29,696 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 14:04:29,696 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:04:29,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 14:04:29,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 14:04:29,697 INFO L87 Difference]: Start difference. First operand 24874 states and 40040 transitions. Second operand 4 states. [2020-10-29 14:04:30,243 WARN L193 SmtUtils]: Spent 487.00 ms on a formula simplification that was a NOOP. DAG size: 294 [2020-10-29 14:04:34,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:04:34,555 INFO L93 Difference]: Finished difference Result 54576 states and 88812 transitions. [2020-10-29 14:04:34,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 14:04:34,556 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 117 [2020-10-29 14:04:34,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:04:34,624 INFO L225 Difference]: With dead ends: 54576 [2020-10-29 14:04:34,624 INFO L226 Difference]: Without dead ends: 39117 [2020-10-29 14:04:34,658 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:04:34,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39117 states. [2020-10-29 14:04:37,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39117 to 39114. [2020-10-29 14:04:37,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39114 states. [2020-10-29 14:04:37,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39114 states to 39114 states and 63240 transitions. [2020-10-29 14:04:37,606 INFO L78 Accepts]: Start accepts. Automaton has 39114 states and 63240 transitions. Word has length 117 [2020-10-29 14:04:37,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:04:37,606 INFO L481 AbstractCegarLoop]: Abstraction has 39114 states and 63240 transitions. [2020-10-29 14:04:37,606 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 14:04:37,606 INFO L276 IsEmpty]: Start isEmpty. Operand 39114 states and 63240 transitions. [2020-10-29 14:04:37,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-29 14:04:37,644 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:04:37,644 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] [2020-10-29 14:04:37,644 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 14:04:37,645 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:04:37,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:04:37,645 INFO L82 PathProgramCache]: Analyzing trace with hash 255233453, now seen corresponding path program 1 times [2020-10-29 14:04:37,645 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:04:37,646 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1502385231] [2020-10-29 14:04:37,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:04:37,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:04:37,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:37,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:37,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:37,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:37,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:38,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:38,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:38,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:39,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:42,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:04:42,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-29 14:04:42,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 14:04:42,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-29 14:04:42,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:04:42,691 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:04:42,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:04:42,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:04:42,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-29 14:04:42,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:04:43,224 WARN L193 SmtUtils]: Spent 461.00 ms on a formula simplification that was a NOOP. DAG size: 292 [2020-10-29 14:04:43,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:04:43,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:04:43,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:43,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:04:43,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:04:43,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:04:43,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 14:04:43,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:04:43,247 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:04:43,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:04:43,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:04:43,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:04:43,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:04:43,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:04:43,289 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1502385231] [2020-10-29 14:04:43,289 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:04:43,289 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:04:43,289 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616382195] [2020-10-29 14:04:43,290 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:04:43,290 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:04:43,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:04:43,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:04:43,290 INFO L87 Difference]: Start difference. First operand 39114 states and 63240 transitions. Second operand 5 states. [2020-10-29 14:04:48,777 WARN L193 SmtUtils]: Spent 527.00 ms on a formula simplification that was a NOOP. DAG size: 298 [2020-10-29 14:04:51,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:04:51,113 INFO L93 Difference]: Finished difference Result 114155 states and 184318 transitions. [2020-10-29 14:04:51,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 14:04:51,114 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 121 [2020-10-29 14:04:51,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:04:51,229 INFO L225 Difference]: With dead ends: 114155 [2020-10-29 14:04:51,229 INFO L226 Difference]: Without dead ends: 76142 [2020-10-29 14:04:51,296 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 14:04:51,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76142 states. [2020-10-29 14:04:57,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76142 to 76139. [2020-10-29 14:04:57,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76139 states. [2020-10-29 14:04:57,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76139 states to 76139 states and 122080 transitions. [2020-10-29 14:04:57,187 INFO L78 Accepts]: Start accepts. Automaton has 76139 states and 122080 transitions. Word has length 121 [2020-10-29 14:04:57,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:04:57,188 INFO L481 AbstractCegarLoop]: Abstraction has 76139 states and 122080 transitions. [2020-10-29 14:04:57,188 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:04:57,188 INFO L276 IsEmpty]: Start isEmpty. Operand 76139 states and 122080 transitions. [2020-10-29 14:04:57,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-29 14:04:57,237 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:04:57,237 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] [2020-10-29 14:04:57,237 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 14:04:57,237 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:04:57,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:04:57,238 INFO L82 PathProgramCache]: Analyzing trace with hash -1126341678, now seen corresponding path program 1 times [2020-10-29 14:04:57,238 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:04:57,238 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [947518063] [2020-10-29 14:04:57,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:04:57,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:04:57,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:57,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:57,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:57,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:57,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:58,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:58,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:58,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:59,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:05:02,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:05:02,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-29 14:05:02,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 14:05:02,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-29 14:05:02,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:05:02,293 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:05:02,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:05:02,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-29 14:05:02,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-29 14:05:02,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:05:02,830 WARN L193 SmtUtils]: Spent 479.00 ms on a formula simplification that was a NOOP. DAG size: 292 [2020-10-29 14:05:02,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:05:02,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:05:02,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:05:02,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:05:02,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:05:02,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:05:02,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 14:05:02,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:05:02,859 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:05:02,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:05:02,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:05:02,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:05:02,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:05:02,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:05:02,901 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [947518063] [2020-10-29 14:05:02,901 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:05:02,901 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 14:05:02,902 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035979646] [2020-10-29 14:05:02,902 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 14:05:02,902 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:05:02,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 14:05:02,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 14:05:02,903 INFO L87 Difference]: Start difference. First operand 76139 states and 122080 transitions. Second operand 4 states. [2020-10-29 14:05:12,148 WARN L193 SmtUtils]: Spent 510.00 ms on a formula simplification that was a NOOP. DAG size: 297 [2020-10-29 14:05:17,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:05:17,355 INFO L93 Difference]: Finished difference Result 218945 states and 350480 transitions. [2020-10-29 14:05:17,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 14:05:17,356 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 122 [2020-10-29 14:05:17,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:05:17,730 INFO L225 Difference]: With dead ends: 218945 [2020-10-29 14:05:17,730 INFO L226 Difference]: Without dead ends: 147734 [2020-10-29 14:05:17,808 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:05:17,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147734 states. [2020-10-29 14:05:29,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147734 to 147731. [2020-10-29 14:05:29,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147731 states. [2020-10-29 14:05:29,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147731 states to 147731 states and 235586 transitions. [2020-10-29 14:05:29,683 INFO L78 Accepts]: Start accepts. Automaton has 147731 states and 235586 transitions. Word has length 122 [2020-10-29 14:05:29,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:05:29,683 INFO L481 AbstractCegarLoop]: Abstraction has 147731 states and 235586 transitions. [2020-10-29 14:05:29,683 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 14:05:29,683 INFO L276 IsEmpty]: Start isEmpty. Operand 147731 states and 235586 transitions. [2020-10-29 14:05:29,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-29 14:05:29,827 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:05:29,827 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] [2020-10-29 14:05:29,827 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 14:05:29,827 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:05:29,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:05:29,828 INFO L82 PathProgramCache]: Analyzing trace with hash -775602339, now seen corresponding path program 1 times [2020-10-29 14:05:29,828 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:05:29,828 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1854121513] [2020-10-29 14:05:29,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:05:29,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:05:29,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:05:29,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:05:29,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:05:30,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:05:30,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:05:30,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:05:30,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:05:30,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:05:31,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:05:34,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:05:34,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-29 14:05:34,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 14:05:34,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-29 14:05:34,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:05:34,898 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:05:34,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:05:34,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:05:34,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-29 14:05:34,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:05:35,504 WARN L193 SmtUtils]: Spent 485.00 ms on a formula simplification that was a NOOP. DAG size: 292 [2020-10-29 14:05:35,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:05:35,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:05:35,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:05:35,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:05:35,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:05:35,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:05:35,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 14:05:35,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:05:35,523 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:05:35,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:05:35,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:05:35,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:05:35,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:05:35,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:05:35,566 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1854121513] [2020-10-29 14:05:35,566 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:05:35,566 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:05:35,566 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736908265] [2020-10-29 14:05:35,567 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:05:35,567 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:05:35,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:05:35,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:05:35,567 INFO L87 Difference]: Start difference. First operand 147731 states and 235586 transitions. Second operand 5 states. [2020-10-29 14:05:49,801 WARN L193 SmtUtils]: Spent 690.00 ms on a formula simplification that was a NOOP. DAG size: 298 [2020-10-29 14:06:02,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:06:02,367 INFO L93 Difference]: Finished difference Result 429096 states and 683405 transitions. [2020-10-29 14:06:02,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 14:06:02,368 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 122 [2020-10-29 14:06:02,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:06:03,041 INFO L225 Difference]: With dead ends: 429096 [2020-10-29 14:06:03,042 INFO L226 Difference]: Without dead ends: 287469 [2020-10-29 14:06:03,163 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 14:06:03,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287469 states. [2020-10-29 14:06:28,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287469 to 287466. [2020-10-29 14:06:28,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287466 states. [2020-10-29 14:06:29,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287466 states to 287466 states and 455271 transitions. [2020-10-29 14:06:29,190 INFO L78 Accepts]: Start accepts. Automaton has 287466 states and 455271 transitions. Word has length 122 [2020-10-29 14:06:29,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:06:29,190 INFO L481 AbstractCegarLoop]: Abstraction has 287466 states and 455271 transitions. [2020-10-29 14:06:29,190 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:06:29,190 INFO L276 IsEmpty]: Start isEmpty. Operand 287466 states and 455271 transitions. [2020-10-29 14:06:29,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-29 14:06:29,376 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:06:29,376 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] [2020-10-29 14:06:29,377 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 14:06:29,377 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:06:29,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:06:29,377 INFO L82 PathProgramCache]: Analyzing trace with hash -191375487, now seen corresponding path program 1 times [2020-10-29 14:06:29,377 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:06:29,378 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [210239441] [2020-10-29 14:06:29,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:06:29,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:06:29,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:29,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:30,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:30,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:30,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:30,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:30,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:33,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:34,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:34,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:34,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:06:34,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-29 14:06:34,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-29 14:06:34,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-29 14:06:34,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:06:34,435 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:06:34,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:06:34,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:06:34,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-29 14:06:34,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:06:35,023 WARN L193 SmtUtils]: Spent 497.00 ms on a formula simplification that was a NOOP. DAG size: 292 [2020-10-29 14:06:35,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:06:35,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:06:35,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:35,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:06:35,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:06:35,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:06:35,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 14:06:35,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:06:35,063 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:06:35,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:06:35,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:06:35,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:06:35,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:06:35,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:06:35,126 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [210239441] [2020-10-29 14:06:35,126 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:06:35,126 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:06:35,131 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405285997] [2020-10-29 14:06:35,132 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:06:35,132 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:06:35,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:06:35,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:06:35,133 INFO L87 Difference]: Start difference. First operand 287466 states and 455271 transitions. Second operand 5 states.