/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.3.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 00:33:41,491 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 00:33:41,494 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 00:33:41,536 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 00:33:41,537 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 00:33:41,538 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 00:33:41,540 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 00:33:41,543 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 00:33:41,545 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 00:33:41,547 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 00:33:41,549 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 00:33:41,551 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 00:33:41,552 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 00:33:41,553 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 00:33:41,555 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 00:33:41,557 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 00:33:41,558 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 00:33:41,559 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 00:33:41,576 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 00:33:41,581 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 00:33:41,584 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 00:33:41,590 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 00:33:41,593 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 00:33:41,596 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 00:33:41,603 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 00:33:41,604 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 00:33:41,609 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 00:33:41,610 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 00:33:41,612 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 00:33:41,613 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 00:33:41,614 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 00:33:41,615 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 00:33:41,617 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 00:33:41,618 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 00:33:41,619 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 00:33:41,620 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 00:33:41,621 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 00:33:41,622 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 00:33:41,622 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 00:33:41,623 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 00:33:41,624 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 00:33:41,625 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-28 00:33:41,686 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 00:33:41,686 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 00:33:41,692 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 00:33:41,692 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 00:33:41,692 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 00:33:41,692 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 00:33:41,693 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 00:33:41,693 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 00:33:41,693 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 00:33:41,694 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 00:33:41,695 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 00:33:41,695 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 00:33:41,695 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 00:33:41,696 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 00:33:41,696 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 00:33:41,696 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 00:33:41,696 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 00:33:41,696 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 00:33:41,697 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 00:33:41,697 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 00:33:41,697 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 00:33:41,697 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 00:33:41,698 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 00:33:41,698 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 00:33:41,698 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 00:33:41,698 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 00:33:41,698 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 00:33:41,699 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 00:33:41,699 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 00:33:41,699 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-28 00:33:42,130 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 00:33:42,181 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 00:33:42,185 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 00:33:42,186 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 00:33:42,188 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 00:33:42,189 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.3.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2020-10-28 00:33:42,281 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/32997bc6b/8acdb23beea444b8b2ac322460b37b8d/FLAG6836a456f [2020-10-28 00:33:43,231 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 00:33:43,231 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.3.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2020-10-28 00:33:43,271 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/32997bc6b/8acdb23beea444b8b2ac322460b37b8d/FLAG6836a456f [2020-10-28 00:33:43,290 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/32997bc6b/8acdb23beea444b8b2ac322460b37b8d [2020-10-28 00:33:43,294 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 00:33:43,302 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 00:33:43,306 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 00:33:43,307 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 00:33:43,310 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 00:33:43,312 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:33:43" (1/1) ... [2020-10-28 00:33:43,322 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e7825fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:33:43, skipping insertion in model container [2020-10-28 00:33:43,322 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:33:43" (1/1) ... [2020-10-28 00:33:43,331 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 00:33:43,532 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 00:33:44,959 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 00:33:44,974 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 00:33:45,778 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 00:33:45,818 INFO L208 MainTranslator]: Completed translation [2020-10-28 00:33:45,820 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:33:45 WrapperNode [2020-10-28 00:33:45,820 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 00:33:45,821 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 00:33:45,822 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 00:33:45,822 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 00:33:45,837 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:33:45" (1/1) ... [2020-10-28 00:33:45,839 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:33:45" (1/1) ... [2020-10-28 00:33:45,909 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:33:45" (1/1) ... [2020-10-28 00:33:45,909 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:33:45" (1/1) ... [2020-10-28 00:33:45,999 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:33:45" (1/1) ... [2020-10-28 00:33:46,058 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:33:45" (1/1) ... [2020-10-28 00:33:46,084 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:33:45" (1/1) ... [2020-10-28 00:33:46,106 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 00:33:46,107 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 00:33:46,107 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 00:33:46,107 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 00:33:46,108 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:33:45" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 00:33:46,189 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 00:33:46,189 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 00:33:46,189 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 00:33:46,189 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-28 00:33:46,190 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 00:33:46,190 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 00:33:46,190 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 00:33:46,190 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 00:33:46,190 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 00:33:46,191 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-28 00:33:46,191 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-28 00:33:46,191 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-28 00:33:46,191 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-28 00:33:46,191 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-28 00:33:46,192 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-28 00:33:46,192 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-28 00:33:46,192 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-28 00:33:46,192 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-28 00:33:46,192 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-28 00:33:46,192 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-28 00:33:46,193 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-28 00:33:46,193 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 00:33:46,193 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 00:33:46,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 00:33:46,193 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 00:33:46,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 00:33:46,194 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 00:33:46,194 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 00:33:49,585 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 00:33:49,585 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-28 00:33:49,589 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:33:49 BoogieIcfgContainer [2020-10-28 00:33:49,590 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 00:33:49,592 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 00:33:49,592 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 00:33:49,595 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 00:33:49,596 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 12:33:43" (1/3) ... [2020-10-28 00:33:49,597 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b361ddd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:33:49, skipping insertion in model container [2020-10-28 00:33:49,597 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:33:45" (2/3) ... [2020-10-28 00:33:49,597 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b361ddd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:33:49, skipping insertion in model container [2020-10-28 00:33:49,597 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:33:49" (3/3) ... [2020-10-28 00:33:49,599 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.3.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2020-10-28 00:33:49,612 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 00:33:49,618 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 00:33:49,633 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 00:33:49,668 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 00:33:49,668 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 00:33:49,668 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 00:33:49,668 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 00:33:49,668 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 00:33:49,668 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 00:33:49,669 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 00:33:49,669 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 00:33:49,706 INFO L276 IsEmpty]: Start isEmpty. Operand 996 states. [2020-10-28 00:33:49,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2020-10-28 00:33:49,737 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:33:49,738 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:33:49,738 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:33:49,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:33:49,745 INFO L82 PathProgramCache]: Analyzing trace with hash -1005847595, now seen corresponding path program 1 times [2020-10-28 00:33:49,755 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:33:49,756 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1464186991] [2020-10-28 00:33:49,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:33:50,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:33:50,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:33:51,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:33:51,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:33:52,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:33:52,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:33:53,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:33:53,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:33:53,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:33:53,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:33:54,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:33:54,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:33:54,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:33:55,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:33:55,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:33:55,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:33:55,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 327 [2020-10-28 00:33:55,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-28 00:33:55,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5058 [2020-10-28 00:33:55,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:33:55,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:33:55,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-28 00:33:55,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 214 [2020-10-28 00:33:55,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 00:33:56,497 WARN L193 SmtUtils]: Spent 680.00 ms on a formula simplification that was a NOOP. DAG size: 358 [2020-10-28 00:33:56,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:33:56,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:33:56,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:33:56,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:33:56,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:33:56,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:33:56,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-28 00:33:56,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:33:56,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:33:56,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:33:56,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:33:56,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:33:56,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:33:56,792 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1464186991] [2020-10-28 00:33:56,795 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:33:56,795 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:33:56,796 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749909951] [2020-10-28 00:33:56,804 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:33:56,805 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:33:56,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:33:56,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:33:56,827 INFO L87 Difference]: Start difference. First operand 996 states. Second operand 4 states. [2020-10-28 00:33:57,772 WARN L193 SmtUtils]: Spent 806.00 ms on a formula simplification that was a NOOP. DAG size: 359 [2020-10-28 00:34:05,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:34:05,332 INFO L93 Difference]: Finished difference Result 1703 states and 3030 transitions. [2020-10-28 00:34:05,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:34:05,335 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 319 [2020-10-28 00:34:05,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:34:05,403 INFO L225 Difference]: With dead ends: 1703 [2020-10-28 00:34:05,404 INFO L226 Difference]: Without dead ends: 1425 [2020-10-28 00:34:05,418 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:34:05,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1425 states. [2020-10-28 00:34:05,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1425 to 1422. [2020-10-28 00:34:05,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1422 states. [2020-10-28 00:34:05,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1422 states to 1422 states and 2205 transitions. [2020-10-28 00:34:05,643 INFO L78 Accepts]: Start accepts. Automaton has 1422 states and 2205 transitions. Word has length 319 [2020-10-28 00:34:05,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:34:05,648 INFO L481 AbstractCegarLoop]: Abstraction has 1422 states and 2205 transitions. [2020-10-28 00:34:05,648 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:34:05,648 INFO L276 IsEmpty]: Start isEmpty. Operand 1422 states and 2205 transitions. [2020-10-28 00:34:05,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2020-10-28 00:34:05,664 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:34:05,665 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:34:05,666 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 00:34:05,667 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:34:05,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:34:05,673 INFO L82 PathProgramCache]: Analyzing trace with hash 348435370, now seen corresponding path program 1 times [2020-10-28 00:34:05,674 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:34:05,674 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1929126695] [2020-10-28 00:34:05,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:34:05,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:34:05,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:06,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:06,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:06,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:07,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:07,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:07,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:07,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:07,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:08,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:08,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:08,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:08,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:08,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:09,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:10,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:34:10,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 327 [2020-10-28 00:34:10,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-28 00:34:10,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-28 00:34:10,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:34:10,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:34:10,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 87 [2020-10-28 00:34:10,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 220 [2020-10-28 00:34:10,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:34:11,684 WARN L193 SmtUtils]: Spent 636.00 ms on a formula simplification that was a NOOP. DAG size: 358 [2020-10-28 00:34:11,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:34:11,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:34:11,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:11,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:34:11,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:34:11,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:34:11,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 00:34:11,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:34:11,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:34:11,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:34:11,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:34:11,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:34:12,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:34:12,054 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1929126695] [2020-10-28 00:34:12,055 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:34:12,055 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:34:12,057 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905882211] [2020-10-28 00:34:12,061 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:34:12,062 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:34:12,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:34:12,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:34:12,078 INFO L87 Difference]: Start difference. First operand 1422 states and 2205 transitions. Second operand 4 states. [2020-10-28 00:34:12,887 WARN L193 SmtUtils]: Spent 730.00 ms on a formula simplification that was a NOOP. DAG size: 359 [2020-10-28 00:34:19,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:34:19,979 INFO L93 Difference]: Finished difference Result 2727 states and 4267 transitions. [2020-10-28 00:34:19,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:34:19,980 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 319 [2020-10-28 00:34:19,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:34:19,994 INFO L225 Difference]: With dead ends: 2727 [2020-10-28 00:34:19,994 INFO L226 Difference]: Without dead ends: 2315 [2020-10-28 00:34:19,998 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:34:20,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2315 states. [2020-10-28 00:34:20,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2315 to 2312. [2020-10-28 00:34:20,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2312 states. [2020-10-28 00:34:20,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2312 states to 2312 states and 3593 transitions. [2020-10-28 00:34:20,078 INFO L78 Accepts]: Start accepts. Automaton has 2312 states and 3593 transitions. Word has length 319 [2020-10-28 00:34:20,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:34:20,079 INFO L481 AbstractCegarLoop]: Abstraction has 2312 states and 3593 transitions. [2020-10-28 00:34:20,079 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:34:20,079 INFO L276 IsEmpty]: Start isEmpty. Operand 2312 states and 3593 transitions. [2020-10-28 00:34:20,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2020-10-28 00:34:20,087 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:34:20,088 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:34:20,088 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 00:34:20,088 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:34:20,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:34:20,089 INFO L82 PathProgramCache]: Analyzing trace with hash -499614653, now seen corresponding path program 1 times [2020-10-28 00:34:20,089 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:34:20,090 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [962930261] [2020-10-28 00:34:20,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:34:20,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:34:20,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:20,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:20,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:21,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:21,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:21,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:21,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:21,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:21,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:21,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:22,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:22,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:22,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:22,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:25,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:34:25,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 327 [2020-10-28 00:34:25,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-28 00:34:25,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-10-28 00:34:25,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:34:25,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:34:25,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-10-28 00:34:25,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 232 [2020-10-28 00:34:25,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 00:34:26,014 WARN L193 SmtUtils]: Spent 592.00 ms on a formula simplification that was a NOOP. DAG size: 358 [2020-10-28 00:34:26,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:34:26,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:34:26,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:26,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:34:26,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:34:26,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:34:26,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 00:34:26,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:34:26,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:34:26,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:34:26,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:34:26,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:34:26,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:34:26,280 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [962930261] [2020-10-28 00:34:26,280 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:34:26,281 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:34:26,281 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684870982] [2020-10-28 00:34:26,282 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:34:26,282 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:34:26,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:34:26,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:34:26,283 INFO L87 Difference]: Start difference. First operand 2312 states and 3593 transitions. Second operand 4 states. [2020-10-28 00:34:26,952 WARN L193 SmtUtils]: Spent 616.00 ms on a formula simplification that was a NOOP. DAG size: 359 [2020-10-28 00:34:33,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:34:33,873 INFO L93 Difference]: Finished difference Result 4785 states and 7516 transitions. [2020-10-28 00:34:33,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:34:33,874 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 319 [2020-10-28 00:34:33,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:34:33,897 INFO L225 Difference]: With dead ends: 4785 [2020-10-28 00:34:33,897 INFO L226 Difference]: Without dead ends: 4143 [2020-10-28 00:34:33,900 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:34:33,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4143 states. [2020-10-28 00:34:34,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4143 to 4140. [2020-10-28 00:34:34,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4140 states. [2020-10-28 00:34:34,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4140 states to 4140 states and 6445 transitions. [2020-10-28 00:34:34,047 INFO L78 Accepts]: Start accepts. Automaton has 4140 states and 6445 transitions. Word has length 319 [2020-10-28 00:34:34,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:34:34,048 INFO L481 AbstractCegarLoop]: Abstraction has 4140 states and 6445 transitions. [2020-10-28 00:34:34,048 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:34:34,048 INFO L276 IsEmpty]: Start isEmpty. Operand 4140 states and 6445 transitions. [2020-10-28 00:34:34,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2020-10-28 00:34:34,058 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:34:34,059 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:34:34,059 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 00:34:34,059 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:34:34,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:34:34,060 INFO L82 PathProgramCache]: Analyzing trace with hash -510111718, now seen corresponding path program 1 times [2020-10-28 00:34:34,060 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:34:34,060 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [164754875] [2020-10-28 00:34:34,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:34:34,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:34:34,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:34,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:34,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:35,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:35,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:35,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:35,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:35,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:35,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:36,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:36,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:36,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:36,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:36,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:39,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:34:39,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 327 [2020-10-28 00:34:39,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-28 00:34:39,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5043 [2020-10-28 00:34:39,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:34:39,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 00:34:39,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 00:34:39,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-28 00:34:39,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:34:40,286 WARN L193 SmtUtils]: Spent 717.00 ms on a formula simplification that was a NOOP. DAG size: 358 [2020-10-28 00:34:40,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:34:40,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:34:40,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:40,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:34:40,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:34:40,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:34:40,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 00:34:40,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:34:40,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:34:40,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:34:40,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:34:40,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:34:40,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:34:40,544 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [164754875] [2020-10-28 00:34:40,545 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:34:40,545 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 00:34:40,545 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120295717] [2020-10-28 00:34:40,545 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 00:34:40,546 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:34:40,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 00:34:40,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:34:40,546 INFO L87 Difference]: Start difference. First operand 4140 states and 6445 transitions. Second operand 5 states. [2020-10-28 00:34:49,241 WARN L193 SmtUtils]: Spent 673.00 ms on a formula simplification that was a NOOP. DAG size: 364 [2020-10-28 00:34:51,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:34:51,978 INFO L93 Difference]: Finished difference Result 12200 states and 18962 transitions. [2020-10-28 00:34:51,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 00:34:51,980 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 319 [2020-10-28 00:34:51,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:34:52,021 INFO L225 Difference]: With dead ends: 12200 [2020-10-28 00:34:52,021 INFO L226 Difference]: Without dead ends: 8099 [2020-10-28 00:34:52,034 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 00:34:52,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8099 states. [2020-10-28 00:34:52,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8099 to 7998. [2020-10-28 00:34:52,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7998 states. [2020-10-28 00:34:52,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7998 states to 7998 states and 12383 transitions. [2020-10-28 00:34:52,433 INFO L78 Accepts]: Start accepts. Automaton has 7998 states and 12383 transitions. Word has length 319 [2020-10-28 00:34:52,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:34:52,433 INFO L481 AbstractCegarLoop]: Abstraction has 7998 states and 12383 transitions. [2020-10-28 00:34:52,433 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 00:34:52,433 INFO L276 IsEmpty]: Start isEmpty. Operand 7998 states and 12383 transitions. [2020-10-28 00:34:52,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2020-10-28 00:34:52,456 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:34:52,456 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:34:52,457 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 00:34:52,457 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:34:52,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:34:52,458 INFO L82 PathProgramCache]: Analyzing trace with hash -110349781, now seen corresponding path program 1 times [2020-10-28 00:34:52,458 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:34:52,458 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [405785888] [2020-10-28 00:34:52,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:34:52,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:34:52,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:52,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:52,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:53,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:53,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:53,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:54,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:54,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:54,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:54,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:54,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:54,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:54,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:55,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:57,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:34:57,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 329 [2020-10-28 00:34:57,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-28 00:34:57,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-28 00:34:57,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:34:57,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 00:34:57,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-28 00:34:57,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-28 00:34:57,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:34:58,389 WARN L193 SmtUtils]: Spent 695.00 ms on a formula simplification that was a NOOP. DAG size: 358 [2020-10-28 00:34:58,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:34:58,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:34:58,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:58,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:34:58,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:34:58,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:34:58,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 00:34:58,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:34:58,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:34:58,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:34:58,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:34:58,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:34:58,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:34:58,519 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [405785888] [2020-10-28 00:34:58,519 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:34:58,519 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 00:34:58,519 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675347514] [2020-10-28 00:34:58,520 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 00:34:58,520 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:34:58,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 00:34:58,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:34:58,521 INFO L87 Difference]: Start difference. First operand 7998 states and 12383 transitions. Second operand 5 states. [2020-10-28 00:35:10,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:35:10,285 INFO L93 Difference]: Finished difference Result 23802 states and 36810 transitions. [2020-10-28 00:35:10,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:35:10,286 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 321 [2020-10-28 00:35:10,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:35:10,343 INFO L225 Difference]: With dead ends: 23802 [2020-10-28 00:35:10,344 INFO L226 Difference]: Without dead ends: 15956 [2020-10-28 00:35:10,424 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 00:35:10,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15956 states. [2020-10-28 00:35:10,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15956 to 8130. [2020-10-28 00:35:10,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8130 states. [2020-10-28 00:35:10,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8130 states to 8130 states and 12615 transitions. [2020-10-28 00:35:10,944 INFO L78 Accepts]: Start accepts. Automaton has 8130 states and 12615 transitions. Word has length 321 [2020-10-28 00:35:10,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:35:10,945 INFO L481 AbstractCegarLoop]: Abstraction has 8130 states and 12615 transitions. [2020-10-28 00:35:10,945 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 00:35:10,945 INFO L276 IsEmpty]: Start isEmpty. Operand 8130 states and 12615 transitions. [2020-10-28 00:35:10,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2020-10-28 00:35:10,959 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:35:10,960 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:35:10,960 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 00:35:10,960 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:35:10,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:35:10,961 INFO L82 PathProgramCache]: Analyzing trace with hash -1547864240, now seen corresponding path program 1 times [2020-10-28 00:35:10,961 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:35:10,961 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [776413867] [2020-10-28 00:35:10,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:35:11,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:35:11,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:11,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:11,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:11,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:11,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:11,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:11,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:12,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:12,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:12,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:12,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:12,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:12,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:12,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:12,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:16,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:35:16,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 329 [2020-10-28 00:35:16,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-28 00:35:16,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-28 00:35:16,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:35:16,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:35:16,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-28 00:35:16,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-28 00:35:16,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:35:16,820 WARN L193 SmtUtils]: Spent 685.00 ms on a formula simplification that was a NOOP. DAG size: 358 [2020-10-28 00:35:16,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:35:16,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:35:16,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:16,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:35:16,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:35:16,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:35:16,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 00:35:16,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:35:16,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:35:16,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:35:16,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:35:16,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:35:16,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:35:16,987 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [776413867] [2020-10-28 00:35:16,987 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:35:16,988 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:35:16,988 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759228422] [2020-10-28 00:35:16,988 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:35:16,989 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:35:16,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:35:16,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:35:16,989 INFO L87 Difference]: Start difference. First operand 8130 states and 12615 transitions. Second operand 4 states. [2020-10-28 00:35:26,639 WARN L193 SmtUtils]: Spent 706.00 ms on a formula simplification that was a NOOP. DAG size: 363 [2020-10-28 00:35:29,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:35:29,075 INFO L93 Difference]: Finished difference Result 23720 states and 36685 transitions. [2020-10-28 00:35:29,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:35:29,075 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 321 [2020-10-28 00:35:29,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:35:29,107 INFO L225 Difference]: With dead ends: 23720 [2020-10-28 00:35:29,108 INFO L226 Difference]: Without dead ends: 15828 [2020-10-28 00:35:29,125 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:35:29,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15828 states. [2020-10-28 00:35:30,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15828 to 15743. [2020-10-28 00:35:30,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15743 states. [2020-10-28 00:35:30,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15743 states to 15743 states and 24262 transitions. [2020-10-28 00:35:30,176 INFO L78 Accepts]: Start accepts. Automaton has 15743 states and 24262 transitions. Word has length 321 [2020-10-28 00:35:30,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:35:30,176 INFO L481 AbstractCegarLoop]: Abstraction has 15743 states and 24262 transitions. [2020-10-28 00:35:30,176 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:35:30,177 INFO L276 IsEmpty]: Start isEmpty. Operand 15743 states and 24262 transitions. [2020-10-28 00:35:30,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2020-10-28 00:35:30,207 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:35:30,207 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:35:30,208 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 00:35:30,208 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:35:30,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:35:30,209 INFO L82 PathProgramCache]: Analyzing trace with hash -162959883, now seen corresponding path program 1 times [2020-10-28 00:35:30,209 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:35:30,209 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1772446839] [2020-10-28 00:35:30,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:35:30,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:35:30,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:30,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:30,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:30,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:30,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:30,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:30,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:30,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:31,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:31,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:31,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:31,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:31,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:31,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:35,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:35:35,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 330 [2020-10-28 00:35:35,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-28 00:35:35,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-28 00:35:35,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:35:35,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:35:35,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-28 00:35:35,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-28 00:35:35,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:35:36,044 WARN L193 SmtUtils]: Spent 683.00 ms on a formula simplification that was a NOOP. DAG size: 358 [2020-10-28 00:35:36,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:35:36,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:35:36,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:36,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:35:36,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:35:36,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:35:36,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 00:35:36,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:35:36,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:35:36,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:35:36,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:35:36,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:35:36,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:35:36,237 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1772446839] [2020-10-28 00:35:36,237 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:35:36,237 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:35:36,237 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035770815] [2020-10-28 00:35:36,238 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:35:36,238 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:35:36,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:35:36,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:35:36,239 INFO L87 Difference]: Start difference. First operand 15743 states and 24262 transitions. Second operand 4 states. [2020-10-28 00:35:46,332 WARN L193 SmtUtils]: Spent 728.00 ms on a formula simplification that was a NOOP. DAG size: 363 [2020-10-28 00:35:48,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:35:48,396 INFO L93 Difference]: Finished difference Result 44478 states and 68350 transitions. [2020-10-28 00:35:48,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:35:48,398 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 322 [2020-10-28 00:35:48,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:35:48,481 INFO L225 Difference]: With dead ends: 44478 [2020-10-28 00:35:48,481 INFO L226 Difference]: Without dead ends: 29069 [2020-10-28 00:35:48,518 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:35:48,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29069 states. [2020-10-28 00:35:49,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29069 to 29000. [2020-10-28 00:35:49,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29000 states. [2020-10-28 00:35:49,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29000 states to 29000 states and 44359 transitions. [2020-10-28 00:35:49,929 INFO L78 Accepts]: Start accepts. Automaton has 29000 states and 44359 transitions. Word has length 322 [2020-10-28 00:35:49,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:35:49,930 INFO L481 AbstractCegarLoop]: Abstraction has 29000 states and 44359 transitions. [2020-10-28 00:35:49,930 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:35:49,930 INFO L276 IsEmpty]: Start isEmpty. Operand 29000 states and 44359 transitions. [2020-10-28 00:35:49,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2020-10-28 00:35:49,982 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:35:49,983 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:35:49,983 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 00:35:49,983 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:35:49,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:35:49,984 INFO L82 PathProgramCache]: Analyzing trace with hash 567570848, now seen corresponding path program 1 times [2020-10-28 00:35:49,984 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:35:49,984 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [128980678] [2020-10-28 00:35:49,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:35:50,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:35:50,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:50,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:50,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:50,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:50,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:50,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:50,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:50,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:50,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:50,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:50,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:50,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:50,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:52,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:55,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:35:55,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 331 [2020-10-28 00:35:55,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-28 00:35:55,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-28 00:35:55,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:35:55,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:35:55,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-28 00:35:55,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 00:35:55,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:35:55,793 WARN L193 SmtUtils]: Spent 658.00 ms on a formula simplification that was a NOOP. DAG size: 358 [2020-10-28 00:35:55,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:35:55,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:35:55,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:55,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:35:55,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:35:55,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:35:55,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 00:35:55,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:35:55,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:35:55,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:35:55,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:35:55,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:35:55,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:35:55,887 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [128980678] [2020-10-28 00:35:55,887 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:35:55,887 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:35:55,888 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508004459] [2020-10-28 00:35:55,888 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:35:55,889 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:35:55,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:35:55,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:35:55,889 INFO L87 Difference]: Start difference. First operand 29000 states and 44359 transitions. Second operand 4 states. [2020-10-28 00:36:04,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:36:04,090 INFO L93 Difference]: Finished difference Result 85510 states and 130415 transitions. [2020-10-28 00:36:04,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-28 00:36:04,090 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 323 [2020-10-28 00:36:04,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:36:04,198 INFO L225 Difference]: With dead ends: 85510 [2020-10-28 00:36:04,198 INFO L226 Difference]: Without dead ends: 57250 [2020-10-28 00:36:04,255 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:36:04,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57250 states. [2020-10-28 00:36:05,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57250 to 29102. [2020-10-28 00:36:05,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29102 states. [2020-10-28 00:36:06,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29102 states to 29102 states and 44494 transitions. [2020-10-28 00:36:06,232 INFO L78 Accepts]: Start accepts. Automaton has 29102 states and 44494 transitions. Word has length 323 [2020-10-28 00:36:06,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:36:06,233 INFO L481 AbstractCegarLoop]: Abstraction has 29102 states and 44494 transitions. [2020-10-28 00:36:06,233 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:36:06,233 INFO L276 IsEmpty]: Start isEmpty. Operand 29102 states and 44494 transitions. [2020-10-28 00:36:06,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2020-10-28 00:36:06,275 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:36:06,275 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:36:06,275 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 00:36:06,276 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:36:06,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:36:06,276 INFO L82 PathProgramCache]: Analyzing trace with hash -15119813, now seen corresponding path program 1 times [2020-10-28 00:36:06,276 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:36:06,277 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2094932029] [2020-10-28 00:36:06,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:36:06,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:36:06,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:06,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:06,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:06,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:06,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:06,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:07,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:07,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:07,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:07,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:07,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:07,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:07,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:08,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:08,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:08,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:11,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:36:11,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 332 [2020-10-28 00:36:11,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-28 00:36:11,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-28 00:36:11,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:36:11,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 00:36:11,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-28 00:36:11,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-28 00:36:11,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:36:12,124 WARN L193 SmtUtils]: Spent 684.00 ms on a formula simplification that was a NOOP. DAG size: 358 [2020-10-28 00:36:12,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:36:12,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:36:12,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:12,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:36:12,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:36:12,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:36:12,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 00:36:12,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:36:12,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:36:12,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:36:12,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:36:12,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:36:12,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:36:12,236 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2094932029] [2020-10-28 00:36:12,236 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:36:12,236 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 00:36:12,236 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762729125] [2020-10-28 00:36:12,237 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 00:36:12,237 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:36:12,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 00:36:12,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:36:12,238 INFO L87 Difference]: Start difference. First operand 29102 states and 44494 transitions. Second operand 5 states. [2020-10-28 00:36:19,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:36:19,464 INFO L93 Difference]: Finished difference Result 55398 states and 84499 transitions. [2020-10-28 00:36:19,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:36:19,465 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 324 [2020-10-28 00:36:19,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:36:19,506 INFO L225 Difference]: With dead ends: 55398 [2020-10-28 00:36:19,507 INFO L226 Difference]: Without dead ends: 27252 [2020-10-28 00:36:19,535 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 00:36:19,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27252 states. [2020-10-28 00:36:21,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27252 to 27194. [2020-10-28 00:36:21,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27194 states. [2020-10-28 00:36:21,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27194 states to 27194 states and 41557 transitions. [2020-10-28 00:36:21,108 INFO L78 Accepts]: Start accepts. Automaton has 27194 states and 41557 transitions. Word has length 324 [2020-10-28 00:36:21,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:36:21,108 INFO L481 AbstractCegarLoop]: Abstraction has 27194 states and 41557 transitions. [2020-10-28 00:36:21,108 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 00:36:21,108 INFO L276 IsEmpty]: Start isEmpty. Operand 27194 states and 41557 transitions. [2020-10-28 00:36:21,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2020-10-28 00:36:21,126 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:36:21,126 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:36:21,126 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 00:36:21,126 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:36:21,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:36:21,127 INFO L82 PathProgramCache]: Analyzing trace with hash 1349785896, now seen corresponding path program 1 times [2020-10-28 00:36:21,127 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:36:21,127 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1966897211] [2020-10-28 00:36:21,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:36:21,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:36:21,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:21,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:21,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:21,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:21,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:21,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:21,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:22,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:22,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:22,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:22,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:22,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:22,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:22,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:22,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:26,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:36:26,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 333 [2020-10-28 00:36:26,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-28 00:36:26,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-28 00:36:26,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:36:26,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:36:26,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 102 [2020-10-28 00:36:26,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 00:36:26,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:36:27,097 WARN L193 SmtUtils]: Spent 807.00 ms on a formula simplification that was a NOOP. DAG size: 358 [2020-10-28 00:36:27,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:36:27,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:36:27,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:27,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:36:27,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:36:27,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:36:27,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 00:36:27,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:36:27,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:36:27,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:36:27,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:36:27,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:36:27,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:36:27,261 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1966897211] [2020-10-28 00:36:27,261 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:36:27,262 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:36:27,262 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728889712] [2020-10-28 00:36:27,262 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:36:27,262 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:36:27,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:36:27,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:36:27,264 INFO L87 Difference]: Start difference. First operand 27194 states and 41557 transitions. Second operand 4 states. [2020-10-28 00:36:37,662 WARN L193 SmtUtils]: Spent 751.00 ms on a formula simplification that was a NOOP. DAG size: 363 [2020-10-28 00:36:38,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:36:38,080 INFO L93 Difference]: Finished difference Result 69100 states and 106244 transitions. [2020-10-28 00:36:38,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:36:38,081 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 325 [2020-10-28 00:36:38,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:36:38,137 INFO L225 Difference]: With dead ends: 69100 [2020-10-28 00:36:38,137 INFO L226 Difference]: Without dead ends: 43581 [2020-10-28 00:36:38,166 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:36:38,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43581 states. [2020-10-28 00:36:40,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43581 to 34146. [2020-10-28 00:36:40,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34146 states. [2020-10-28 00:36:40,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34146 states to 34146 states and 52947 transitions. [2020-10-28 00:36:40,187 INFO L78 Accepts]: Start accepts. Automaton has 34146 states and 52947 transitions. Word has length 325 [2020-10-28 00:36:40,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:36:40,188 INFO L481 AbstractCegarLoop]: Abstraction has 34146 states and 52947 transitions. [2020-10-28 00:36:40,188 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:36:40,188 INFO L276 IsEmpty]: Start isEmpty. Operand 34146 states and 52947 transitions. [2020-10-28 00:36:40,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2020-10-28 00:36:40,209 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:36:40,210 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:36:40,210 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 00:36:40,210 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:36:40,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:36:40,211 INFO L82 PathProgramCache]: Analyzing trace with hash 682985492, now seen corresponding path program 1 times [2020-10-28 00:36:40,211 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:36:40,211 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [404723103] [2020-10-28 00:36:40,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:36:40,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:36:40,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:40,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:40,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:40,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:40,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:40,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:41,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:41,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:41,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:41,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:41,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:41,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:41,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:41,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:41,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:45,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:36:45,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 335 [2020-10-28 00:36:45,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-28 00:36:45,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-28 00:36:45,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:36:45,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:36:45,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-28 00:36:45,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-28 00:36:45,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:36:46,032 WARN L193 SmtUtils]: Spent 672.00 ms on a formula simplification that was a NOOP. DAG size: 358 [2020-10-28 00:36:46,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:36:46,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:36:46,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:46,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:36:46,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:36:46,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:36:46,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 00:36:46,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:36:46,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:36:46,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:36:46,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:36:46,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:36:46,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:36:46,206 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [404723103] [2020-10-28 00:36:46,206 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:36:46,206 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:36:46,206 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563338048] [2020-10-28 00:36:46,207 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:36:46,207 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:36:46,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:36:46,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:36:46,209 INFO L87 Difference]: Start difference. First operand 34146 states and 52947 transitions. Second operand 4 states. [2020-10-28 00:36:57,141 WARN L193 SmtUtils]: Spent 774.00 ms on a formula simplification that was a NOOP. DAG size: 363 [2020-10-28 00:36:58,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:36:58,379 INFO L93 Difference]: Finished difference Result 87632 states and 137087 transitions. [2020-10-28 00:36:58,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:36:58,379 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 327 [2020-10-28 00:36:58,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:36:58,438 INFO L225 Difference]: With dead ends: 87632 [2020-10-28 00:36:58,438 INFO L226 Difference]: Without dead ends: 55293 [2020-10-28 00:36:58,467 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:36:58,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55293 states. [2020-10-28 00:37:01,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55293 to 46514. [2020-10-28 00:37:01,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46514 states. [2020-10-28 00:37:01,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46514 states to 46514 states and 73197 transitions. [2020-10-28 00:37:01,200 INFO L78 Accepts]: Start accepts. Automaton has 46514 states and 73197 transitions. Word has length 327 [2020-10-28 00:37:01,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:37:01,200 INFO L481 AbstractCegarLoop]: Abstraction has 46514 states and 73197 transitions. [2020-10-28 00:37:01,200 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:37:01,200 INFO L276 IsEmpty]: Start isEmpty. Operand 46514 states and 73197 transitions. [2020-10-28 00:37:01,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2020-10-28 00:37:01,227 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:37:01,227 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:37:01,227 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 00:37:01,227 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:37:01,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:37:01,228 INFO L82 PathProgramCache]: Analyzing trace with hash 1393577803, now seen corresponding path program 1 times [2020-10-28 00:37:01,228 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:37:01,228 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1759157229] [2020-10-28 00:37:01,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:37:01,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:37:01,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:01,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:01,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:01,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:01,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:02,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:02,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:02,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:02,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:02,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:02,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:02,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:02,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:02,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:06,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:37:06,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 336 [2020-10-28 00:37:06,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-28 00:37:06,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-28 00:37:06,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:37:06,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 00:37:06,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 00:37:06,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-28 00:37:06,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:37:07,152 WARN L193 SmtUtils]: Spent 698.00 ms on a formula simplification that was a NOOP. DAG size: 358 [2020-10-28 00:37:07,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:37:07,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:37:07,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:07,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:37:07,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:37:07,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:37:07,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 00:37:07,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:37:07,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:37:07,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:37:07,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:37:07,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:37:07,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:37:07,318 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1759157229] [2020-10-28 00:37:07,318 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:37:07,318 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 00:37:07,318 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534948528] [2020-10-28 00:37:07,319 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 00:37:07,319 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:37:07,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 00:37:07,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:37:07,319 INFO L87 Difference]: Start difference. First operand 46514 states and 73197 transitions. Second operand 5 states.