/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 13:57:19,442 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 13:57:19,446 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 13:57:19,487 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 13:57:19,488 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 13:57:19,489 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 13:57:19,491 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 13:57:19,493 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 13:57:19,496 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 13:57:19,497 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 13:57:19,498 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 13:57:19,500 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 13:57:19,500 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 13:57:19,501 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 13:57:19,503 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 13:57:19,504 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 13:57:19,505 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 13:57:19,507 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 13:57:19,509 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 13:57:19,511 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 13:57:19,513 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 13:57:19,517 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 13:57:19,519 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 13:57:19,520 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 13:57:19,527 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 13:57:19,527 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 13:57:19,528 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 13:57:19,531 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 13:57:19,532 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 13:57:19,533 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 13:57:19,533 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 13:57:19,537 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 13:57:19,538 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 13:57:19,539 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 13:57:19,551 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 13:57:19,552 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 13:57:19,553 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 13:57:19,553 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 13:57:19,554 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 13:57:19,555 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 13:57:19,557 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 13:57:19,558 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 13:57:19,612 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 13:57:19,612 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 13:57:19,616 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 13:57:19,616 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 13:57:19,617 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 13:57:19,617 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 13:57:19,617 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 13:57:19,617 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 13:57:19,617 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 13:57:19,618 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 13:57:19,618 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 13:57:19,619 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 13:57:19,619 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 13:57:19,619 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 13:57:19,620 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 13:57:19,620 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 13:57:19,620 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 13:57:19,620 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 13:57:19,620 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 13:57:19,621 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 13:57:19,621 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 13:57:19,621 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 13:57:19,621 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 13:57:19,622 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 13:57:19,622 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 13:57:19,622 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 13:57:19,622 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 13:57:19,622 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 13:57:19,622 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 13:57:19,623 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 13:57:20,014 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 13:57:20,047 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 13:57:20,051 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 13:57:20,052 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 13:57:20,060 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 13:57:20,061 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-29 13:57:20,160 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7d6b492d9/3499e48b0da440d2bf38daad1541cf6f/FLAG215fbce88 [2020-10-29 13:57:21,004 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 13:57:21,008 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-29 13:57:21,032 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7d6b492d9/3499e48b0da440d2bf38daad1541cf6f/FLAG215fbce88 [2020-10-29 13:57:21,197 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7d6b492d9/3499e48b0da440d2bf38daad1541cf6f [2020-10-29 13:57:21,203 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 13:57:21,212 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 13:57:21,216 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 13:57:21,217 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 13:57:21,221 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 13:57:21,222 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 01:57:21" (1/1) ... [2020-10-29 13:57:21,227 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71b3bc7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:57:21, skipping insertion in model container [2020-10-29 13:57:21,227 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 01:57:21" (1/1) ... [2020-10-29 13:57:21,236 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 13:57:21,348 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 13:57:22,252 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 13:57:22,268 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 13:57:22,462 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 13:57:22,496 INFO L208 MainTranslator]: Completed translation [2020-10-29 13:57:22,497 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:57:22 WrapperNode [2020-10-29 13:57:22,497 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 13:57:22,505 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 13:57:22,505 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 13:57:22,506 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 13:57:22,524 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:57:22" (1/1) ... [2020-10-29 13:57:22,525 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:57:22" (1/1) ... [2020-10-29 13:57:22,547 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:57:22" (1/1) ... [2020-10-29 13:57:22,548 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:57:22" (1/1) ... [2020-10-29 13:57:22,586 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:57:22" (1/1) ... [2020-10-29 13:57:22,620 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:57:22" (1/1) ... [2020-10-29 13:57:22,627 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:57:22" (1/1) ... [2020-10-29 13:57:22,638 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 13:57:22,639 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 13:57:22,639 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 13:57:22,639 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 13:57:22,640 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:57:22" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 13:57:22,722 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 13:57:22,722 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 13:57:22,722 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 13:57:22,722 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-29 13:57:22,723 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 13:57:22,723 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 13:57:22,723 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 13:57:22,723 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 13:57:22,723 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 13:57:22,724 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-29 13:57:22,724 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-29 13:57:22,724 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-29 13:57:22,724 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-29 13:57:22,724 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-29 13:57:22,724 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-29 13:57:22,725 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-29 13:57:22,725 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-29 13:57:22,725 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-29 13:57:22,725 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-29 13:57:22,725 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-29 13:57:22,726 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-29 13:57:22,726 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 13:57:22,726 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 13:57:22,726 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 13:57:22,726 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 13:57:22,726 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 13:57:22,727 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 13:57:22,727 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 13:57:24,556 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 13:57:24,557 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-29 13:57:24,560 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 01:57:24 BoogieIcfgContainer [2020-10-29 13:57:24,560 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 13:57:24,562 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 13:57:24,563 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 13:57:24,566 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 13:57:24,567 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 01:57:21" (1/3) ... [2020-10-29 13:57:24,568 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47f57925 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 01:57:24, skipping insertion in model container [2020-10-29 13:57:24,568 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:57:22" (2/3) ... [2020-10-29 13:57:24,569 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47f57925 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 01:57:24, skipping insertion in model container [2020-10-29 13:57:24,569 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 01:57:24" (3/3) ... [2020-10-29 13:57:24,570 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-29 13:57:24,583 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 13:57:24,590 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 13:57:24,606 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 13:57:24,641 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 13:57:24,642 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 13:57:24,642 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 13:57:24,642 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 13:57:24,642 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 13:57:24,642 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 13:57:24,642 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 13:57:24,643 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 13:57:24,674 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states. [2020-10-29 13:57:24,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-10-29 13:57:24,693 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:57:24,694 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:57:24,694 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:57:24,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:57:24,702 INFO L82 PathProgramCache]: Analyzing trace with hash 188643954, now seen corresponding path program 1 times [2020-10-29 13:57:24,713 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:57:24,714 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [979658745] [2020-10-29 13:57:24,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:57:25,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:57:25,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:57:25,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:57:25,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:57:26,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:57:26,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:57:26,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:57:26,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:57:26,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:57:26,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:57:28,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:57:28,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:57:30,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:57:30,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-10-29 13:57:30,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-29 13:57:30,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5056 [2020-10-29 13:57:30,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:57:30,272 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:57:30,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:57:30,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-29 13:57:30,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-29 13:57:30,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 13:57:30,852 WARN L193 SmtUtils]: Spent 372.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-10-29 13:57:30,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:57:30,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:57:30,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:57:30,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:57:30,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:57:30,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:57:30,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-29 13:57:30,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:57:30,896 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:57:30,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:57:30,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:57:30,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:57:30,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:57:31,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:57:31,003 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [979658745] [2020-10-29 13:57:31,006 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:57:31,006 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 13:57:31,007 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872968784] [2020-10-29 13:57:31,014 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 13:57:31,014 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:57:31,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 13:57:31,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 13:57:31,037 INFO L87 Difference]: Start difference. First operand 427 states. Second operand 4 states. [2020-10-29 13:57:31,459 WARN L193 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 227 [2020-10-29 13:57:34,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:57:34,463 INFO L93 Difference]: Finished difference Result 784 states and 1373 transitions. [2020-10-29 13:57:34,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 13:57:34,465 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 149 [2020-10-29 13:57:34,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:57:34,485 INFO L225 Difference]: With dead ends: 784 [2020-10-29 13:57:34,486 INFO L226 Difference]: Without dead ends: 608 [2020-10-29 13:57:34,490 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:57:34,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2020-10-29 13:57:34,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 605. [2020-10-29 13:57:34,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 605 states. [2020-10-29 13:57:34,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 605 states to 605 states and 894 transitions. [2020-10-29 13:57:34,587 INFO L78 Accepts]: Start accepts. Automaton has 605 states and 894 transitions. Word has length 149 [2020-10-29 13:57:34,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:57:34,588 INFO L481 AbstractCegarLoop]: Abstraction has 605 states and 894 transitions. [2020-10-29 13:57:34,589 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 13:57:34,589 INFO L276 IsEmpty]: Start isEmpty. Operand 605 states and 894 transitions. [2020-10-29 13:57:34,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-10-29 13:57:34,594 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:57:34,594 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:57:34,594 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 13:57:34,594 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:57:34,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:57:34,595 INFO L82 PathProgramCache]: Analyzing trace with hash 1037995146, now seen corresponding path program 1 times [2020-10-29 13:57:34,596 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:57:34,596 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1134739167] [2020-10-29 13:57:34,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:57:34,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:57:34,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:57:34,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:57:34,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:57:35,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:57:35,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:57:35,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:57:35,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:57:35,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:57:35,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:57:36,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:57:38,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:57:38,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:57:39,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:57:39,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-10-29 13:57:39,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-29 13:57:39,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-29 13:57:39,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:57:39,690 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:57:39,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:57:39,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-29 13:57:39,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-29 13:57:39,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:57:40,088 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-10-29 13:57:40,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:57:40,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:57:40,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:57:40,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:57:40,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:57:40,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:57:40,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 13:57:40,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:57:40,114 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:57:40,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:57:40,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:57:40,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:57:40,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:57:40,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:57:40,181 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1134739167] [2020-10-29 13:57:40,181 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:57:40,182 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 13:57:40,182 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346207206] [2020-10-29 13:57:40,184 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 13:57:40,184 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:57:40,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 13:57:40,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 13:57:40,185 INFO L87 Difference]: Start difference. First operand 605 states and 894 transitions. Second operand 4 states. [2020-10-29 13:57:40,549 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 227 [2020-10-29 13:57:42,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:57:42,983 INFO L93 Difference]: Finished difference Result 1229 states and 1867 transitions. [2020-10-29 13:57:42,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 13:57:42,986 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 149 [2020-10-29 13:57:42,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:57:42,993 INFO L225 Difference]: With dead ends: 1229 [2020-10-29 13:57:42,994 INFO L226 Difference]: Without dead ends: 988 [2020-10-29 13:57:42,997 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:57:43,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 988 states. [2020-10-29 13:57:43,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 988 to 985. [2020-10-29 13:57:43,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 985 states. [2020-10-29 13:57:43,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 985 states to 985 states and 1476 transitions. [2020-10-29 13:57:43,057 INFO L78 Accepts]: Start accepts. Automaton has 985 states and 1476 transitions. Word has length 149 [2020-10-29 13:57:43,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:57:43,058 INFO L481 AbstractCegarLoop]: Abstraction has 985 states and 1476 transitions. [2020-10-29 13:57:43,058 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 13:57:43,058 INFO L276 IsEmpty]: Start isEmpty. Operand 985 states and 1476 transitions. [2020-10-29 13:57:43,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-10-29 13:57:43,061 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:57:43,061 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:57:43,061 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 13:57:43,062 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:57:43,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:57:43,062 INFO L82 PathProgramCache]: Analyzing trace with hash -632496009, now seen corresponding path program 1 times [2020-10-29 13:57:43,063 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:57:43,063 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1055898745] [2020-10-29 13:57:43,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:57:43,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:57:43,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:57:43,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:57:43,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:57:43,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:57:43,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:57:43,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:57:43,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:57:43,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:57:43,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:57:44,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:57:44,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:57:47,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:57:48,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:57:48,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-10-29 13:57:48,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-29 13:57:48,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-29 13:57:48,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:57:48,124 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:57:48,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:57:48,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-29 13:57:48,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-29 13:57:48,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:57:48,549 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-10-29 13:57:48,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:57:48,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:57:48,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:57:48,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:57:48,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:57:48,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:57:48,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 13:57:48,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:57:48,577 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:57:48,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:57:48,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:57:48,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:57:48,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:57:48,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:57:48,654 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1055898745] [2020-10-29 13:57:48,654 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:57:48,655 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 13:57:48,655 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297277035] [2020-10-29 13:57:48,656 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 13:57:48,656 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:57:48,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 13:57:48,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 13:57:48,657 INFO L87 Difference]: Start difference. First operand 985 states and 1476 transitions. Second operand 4 states. [2020-10-29 13:57:49,044 WARN L193 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 227 [2020-10-29 13:57:51,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:57:51,457 INFO L93 Difference]: Finished difference Result 2161 states and 3322 transitions. [2020-10-29 13:57:51,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 13:57:51,458 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 149 [2020-10-29 13:57:51,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:57:51,472 INFO L225 Difference]: With dead ends: 2161 [2020-10-29 13:57:51,473 INFO L226 Difference]: Without dead ends: 1752 [2020-10-29 13:57:51,479 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:57:51,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1752 states. [2020-10-29 13:57:51,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1752 to 1749. [2020-10-29 13:57:51,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1749 states. [2020-10-29 13:57:51,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1749 states to 1749 states and 2644 transitions. [2020-10-29 13:57:51,557 INFO L78 Accepts]: Start accepts. Automaton has 1749 states and 2644 transitions. Word has length 149 [2020-10-29 13:57:51,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:57:51,558 INFO L481 AbstractCegarLoop]: Abstraction has 1749 states and 2644 transitions. [2020-10-29 13:57:51,558 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 13:57:51,558 INFO L276 IsEmpty]: Start isEmpty. Operand 1749 states and 2644 transitions. [2020-10-29 13:57:51,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-10-29 13:57:51,565 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:57:51,565 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:57:51,565 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 13:57:51,565 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:57:51,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:57:51,566 INFO L82 PathProgramCache]: Analyzing trace with hash -642993074, now seen corresponding path program 1 times [2020-10-29 13:57:51,566 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:57:51,567 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [562966652] [2020-10-29 13:57:51,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:57:51,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:57:51,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:57:51,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:57:51,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:57:51,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:57:52,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:57:52,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:57:52,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:57:52,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:57:52,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:57:55,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:57:55,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:57:55,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:57:56,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:57:56,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-10-29 13:57:56,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-29 13:57:56,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-29 13:57:56,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:57:56,659 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:57:56,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:57:56,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:57:56,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-29 13:57:56,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:57:57,103 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-10-29 13:57:57,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:57:57,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:57:57,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:57:57,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:57:57,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:57:57,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:57:57,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-29 13:57:57,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:57:57,142 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:57:57,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:57:57,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:57:57,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:57:57,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:57:57,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:57:57,261 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [562966652] [2020-10-29 13:57:57,261 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:57:57,261 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:57:57,262 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705415040] [2020-10-29 13:57:57,262 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:57:57,263 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:57:57,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:57:57,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:57:57,264 INFO L87 Difference]: Start difference. First operand 1749 states and 2644 transitions. Second operand 5 states. [2020-10-29 13:57:59,648 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-10-29 13:58:01,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:58:01,123 INFO L93 Difference]: Finished difference Result 5104 states and 7697 transitions. [2020-10-29 13:58:01,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 13:58:01,124 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 149 [2020-10-29 13:58:01,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:58:01,145 INFO L225 Difference]: With dead ends: 5104 [2020-10-29 13:58:01,146 INFO L226 Difference]: Without dead ends: 3376 [2020-10-29 13:58:01,152 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:58:01,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3376 states. [2020-10-29 13:58:01,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3376 to 3331. [2020-10-29 13:58:01,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3331 states. [2020-10-29 13:58:01,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3331 states to 3331 states and 4997 transitions. [2020-10-29 13:58:01,333 INFO L78 Accepts]: Start accepts. Automaton has 3331 states and 4997 transitions. Word has length 149 [2020-10-29 13:58:01,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:58:01,333 INFO L481 AbstractCegarLoop]: Abstraction has 3331 states and 4997 transitions. [2020-10-29 13:58:01,333 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:58:01,334 INFO L276 IsEmpty]: Start isEmpty. Operand 3331 states and 4997 transitions. [2020-10-29 13:58:01,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-10-29 13:58:01,339 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:58:01,340 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:58:01,340 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 13:58:01,340 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:58:01,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:58:01,341 INFO L82 PathProgramCache]: Analyzing trace with hash 410177819, now seen corresponding path program 1 times [2020-10-29 13:58:01,341 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:58:01,341 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [913044073] [2020-10-29 13:58:01,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:58:01,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:58:01,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:01,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:01,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:01,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:01,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:01,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:01,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:01,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:01,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:02,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:03,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:04,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:04,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:05,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:05,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:05,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:06,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:06,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:58:06,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-29 13:58:06,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-29 13:58:06,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-29 13:58:06,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:58:06,400 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:58:06,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:58:06,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:58:06,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-29 13:58:06,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 13:58:06,958 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-10-29 13:58:06,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:58:06,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:58:06,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:06,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:58:06,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:58:06,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:58:06,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 13:58:06,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:58:06,983 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:58:06,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:58:06,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:58:06,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:58:06,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:58:07,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:58:07,071 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [913044073] [2020-10-29 13:58:07,071 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:58:07,071 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:58:07,071 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415045125] [2020-10-29 13:58:07,072 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:58:07,072 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:58:07,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:58:07,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:58:07,073 INFO L87 Difference]: Start difference. First operand 3331 states and 4997 transitions. Second operand 5 states. [2020-10-29 13:58:10,181 WARN L193 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-10-29 13:58:11,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:58:11,315 INFO L93 Difference]: Finished difference Result 9729 states and 14553 transitions. [2020-10-29 13:58:11,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 13:58:11,316 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 150 [2020-10-29 13:58:11,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:58:11,352 INFO L225 Difference]: With dead ends: 9729 [2020-10-29 13:58:11,353 INFO L226 Difference]: Without dead ends: 6438 [2020-10-29 13:58:11,361 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:58:11,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6438 states. [2020-10-29 13:58:11,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6438 to 6393. [2020-10-29 13:58:11,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6393 states. [2020-10-29 13:58:11,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6393 states to 6393 states and 9495 transitions. [2020-10-29 13:58:11,802 INFO L78 Accepts]: Start accepts. Automaton has 6393 states and 9495 transitions. Word has length 150 [2020-10-29 13:58:11,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:58:11,803 INFO L481 AbstractCegarLoop]: Abstraction has 6393 states and 9495 transitions. [2020-10-29 13:58:11,803 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:58:11,803 INFO L276 IsEmpty]: Start isEmpty. Operand 6393 states and 9495 transitions. [2020-10-29 13:58:11,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-10-29 13:58:11,813 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:58:11,814 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:58:11,814 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 13:58:11,814 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:58:11,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:58:11,815 INFO L82 PathProgramCache]: Analyzing trace with hash -1344748116, now seen corresponding path program 1 times [2020-10-29 13:58:11,815 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:58:11,815 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1747342004] [2020-10-29 13:58:11,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:58:11,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:58:11,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:11,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:11,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:12,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:12,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:12,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:12,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:12,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:13,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:14,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:14,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:16,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:58:16,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-10-29 13:58:16,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-29 13:58:16,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-29 13:58:16,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:58:16,868 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:58:16,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:58:16,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:58:16,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-29 13:58:16,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:58:17,334 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-10-29 13:58:17,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:58:17,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:58:17,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:17,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:58:17,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:58:17,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:58:17,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 13:58:17,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:58:17,358 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:58:17,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:58:17,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:58:17,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:58:17,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:58:17,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:58:17,444 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1747342004] [2020-10-29 13:58:17,446 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:58:17,446 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:58:17,446 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089791214] [2020-10-29 13:58:17,447 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:58:17,447 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:58:17,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:58:17,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:58:17,448 INFO L87 Difference]: Start difference. First operand 6393 states and 9495 transitions. Second operand 5 states. [2020-10-29 13:58:20,407 WARN L193 SmtUtils]: Spent 357.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-10-29 13:58:21,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:58:21,499 INFO L93 Difference]: Finished difference Result 17044 states and 25272 transitions. [2020-10-29 13:58:21,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 13:58:21,500 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 151 [2020-10-29 13:58:21,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:58:21,555 INFO L225 Difference]: With dead ends: 17044 [2020-10-29 13:58:21,555 INFO L226 Difference]: Without dead ends: 10957 [2020-10-29 13:58:21,571 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:58:21,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10957 states. [2020-10-29 13:58:22,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10957 to 10912. [2020-10-29 13:58:22,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10912 states. [2020-10-29 13:58:22,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10912 states to 10912 states and 15998 transitions. [2020-10-29 13:58:22,398 INFO L78 Accepts]: Start accepts. Automaton has 10912 states and 15998 transitions. Word has length 151 [2020-10-29 13:58:22,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:58:22,398 INFO L481 AbstractCegarLoop]: Abstraction has 10912 states and 15998 transitions. [2020-10-29 13:58:22,399 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:58:22,399 INFO L276 IsEmpty]: Start isEmpty. Operand 10912 states and 15998 transitions. [2020-10-29 13:58:22,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-29 13:58:22,415 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:58:22,416 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:58:22,416 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 13:58:22,416 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:58:22,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:58:22,417 INFO L82 PathProgramCache]: Analyzing trace with hash -1771863557, now seen corresponding path program 1 times [2020-10-29 13:58:22,417 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:58:22,417 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1221052960] [2020-10-29 13:58:22,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:58:22,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:58:22,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:22,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:22,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:22,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:22,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:22,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:22,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:23,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:24,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:25,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:25,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:25,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:26,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:27,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:58:27,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-29 13:58:27,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-29 13:58:27,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-29 13:58:27,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:58:27,445 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:58:27,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:58:27,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:58:27,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-10-29 13:58:27,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:58:27,919 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-10-29 13:58:27,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:58:27,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:58:27,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:27,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:58:27,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:58:27,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:58:27,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 13:58:27,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:58:27,942 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:58:27,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:58:27,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:58:27,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:58:27,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:58:28,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:58:28,026 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1221052960] [2020-10-29 13:58:28,026 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:58:28,026 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:58:28,026 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55171517] [2020-10-29 13:58:28,027 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:58:28,027 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:58:28,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:58:28,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:58:28,028 INFO L87 Difference]: Start difference. First operand 10912 states and 15998 transitions. Second operand 5 states. [2020-10-29 13:58:31,336 WARN L193 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-10-29 13:58:33,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:58:33,292 INFO L93 Difference]: Finished difference Result 28910 states and 42267 transitions. [2020-10-29 13:58:33,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 13:58:33,293 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 152 [2020-10-29 13:58:33,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:58:33,355 INFO L225 Difference]: With dead ends: 28910 [2020-10-29 13:58:33,355 INFO L226 Difference]: Without dead ends: 18604 [2020-10-29 13:58:33,375 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:58:33,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18604 states. [2020-10-29 13:58:34,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18604 to 18559. [2020-10-29 13:58:34,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18559 states. [2020-10-29 13:58:34,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18559 states to 18559 states and 26779 transitions. [2020-10-29 13:58:34,890 INFO L78 Accepts]: Start accepts. Automaton has 18559 states and 26779 transitions. Word has length 152 [2020-10-29 13:58:34,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:58:34,890 INFO L481 AbstractCegarLoop]: Abstraction has 18559 states and 26779 transitions. [2020-10-29 13:58:34,890 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:58:34,890 INFO L276 IsEmpty]: Start isEmpty. Operand 18559 states and 26779 transitions. [2020-10-29 13:58:34,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-10-29 13:58:34,916 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:58:34,916 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] [2020-10-29 13:58:34,916 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 13:58:34,916 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:58:34,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:58:34,917 INFO L82 PathProgramCache]: Analyzing trace with hash 1279976555, now seen corresponding path program 1 times [2020-10-29 13:58:34,917 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:58:34,918 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [124796259] [2020-10-29 13:58:34,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:58:34,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:58:34,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:34,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:35,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:35,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:35,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:35,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:35,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:35,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:36,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:36,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:38,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:58:38,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-10-29 13:58:38,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-29 13:58:38,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3118 [2020-10-29 13:58:38,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:58:38,063 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:58:38,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:58:38,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:58:38,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-29 13:58:38,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:58:38,516 WARN L193 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-10-29 13:58:38,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:58:38,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:58:38,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:38,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:58:38,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:58:38,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:58:38,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 13:58:38,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:58:38,540 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:58:38,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:58:38,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:58:38,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:58:38,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:58:38,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:58:38,590 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [124796259] [2020-10-29 13:58:38,590 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:58:38,590 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:58:38,590 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32509670] [2020-10-29 13:58:38,591 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:58:38,591 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:58:38,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:58:38,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:58:38,592 INFO L87 Difference]: Start difference. First operand 18559 states and 26779 transitions. Second operand 5 states. [2020-10-29 13:58:42,179 WARN L193 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-10-29 13:58:44,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:58:44,838 INFO L93 Difference]: Finished difference Result 53810 states and 77348 transitions. [2020-10-29 13:58:44,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 13:58:44,839 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 153 [2020-10-29 13:58:44,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:58:44,931 INFO L225 Difference]: With dead ends: 53810 [2020-10-29 13:58:44,931 INFO L226 Difference]: Without dead ends: 35687 [2020-10-29 13:58:44,968 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:58:45,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35687 states. [2020-10-29 13:58:47,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35687 to 35656. [2020-10-29 13:58:47,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35656 states. [2020-10-29 13:58:47,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35656 states to 35656 states and 50676 transitions. [2020-10-29 13:58:47,793 INFO L78 Accepts]: Start accepts. Automaton has 35656 states and 50676 transitions. Word has length 153 [2020-10-29 13:58:47,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:58:47,794 INFO L481 AbstractCegarLoop]: Abstraction has 35656 states and 50676 transitions. [2020-10-29 13:58:47,794 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:58:47,794 INFO L276 IsEmpty]: Start isEmpty. Operand 35656 states and 50676 transitions. [2020-10-29 13:58:47,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-10-29 13:58:47,829 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:58:47,830 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] [2020-10-29 13:58:47,830 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 13:58:47,830 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:58:47,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:58:47,831 INFO L82 PathProgramCache]: Analyzing trace with hash -640936965, now seen corresponding path program 1 times [2020-10-29 13:58:47,831 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:58:47,831 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [744732560] [2020-10-29 13:58:47,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:58:47,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:58:47,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:47,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:48,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:48,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:48,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:48,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:58:48,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-29 13:58:48,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 13:58:48,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 950 [2020-10-29 13:58:48,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:58:48,811 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:58:48,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:58:48,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:58:48,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-29 13:58:48,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:58:49,277 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-10-29 13:58:49,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:58:49,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:58:49,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:49,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:58:49,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:58:49,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:58:49,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 13:58:49,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:58:49,307 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:58:49,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:58:49,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:58:49,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:58:49,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:58:49,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:58:49,373 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [744732560] [2020-10-29 13:58:49,373 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:58:49,373 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:58:49,374 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269646614] [2020-10-29 13:58:49,374 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:58:49,374 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:58:49,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:58:49,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:58:49,375 INFO L87 Difference]: Start difference. First operand 35656 states and 50676 transitions. Second operand 5 states. [2020-10-29 13:58:53,994 WARN L193 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-10-29 13:58:57,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:58:57,547 INFO L93 Difference]: Finished difference Result 94436 states and 133646 transitions. [2020-10-29 13:58:57,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 13:58:57,548 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 154 [2020-10-29 13:58:57,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:58:57,688 INFO L225 Difference]: With dead ends: 94436 [2020-10-29 13:58:57,688 INFO L226 Difference]: Without dead ends: 60614 [2020-10-29 13:58:57,758 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:58:57,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60614 states. [2020-10-29 13:59:03,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60614 to 60587. [2020-10-29 13:59:03,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60587 states. [2020-10-29 13:59:03,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60587 states to 60587 states and 84398 transitions. [2020-10-29 13:59:03,175 INFO L78 Accepts]: Start accepts. Automaton has 60587 states and 84398 transitions. Word has length 154 [2020-10-29 13:59:03,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:59:03,175 INFO L481 AbstractCegarLoop]: Abstraction has 60587 states and 84398 transitions. [2020-10-29 13:59:03,175 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:59:03,175 INFO L276 IsEmpty]: Start isEmpty. Operand 60587 states and 84398 transitions. [2020-10-29 13:59:03,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-10-29 13:59:03,214 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:59:03,214 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] [2020-10-29 13:59:03,214 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 13:59:03,215 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:59:03,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:59:03,215 INFO L82 PathProgramCache]: Analyzing trace with hash 1868426763, now seen corresponding path program 1 times [2020-10-29 13:59:03,215 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:59:03,216 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1414218225] [2020-10-29 13:59:03,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:59:03,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-29 13:59:03,264 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-29 13:59:03,265 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-29 13:59:03,269 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 13:59:03,319 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 01:59:03 BoogieIcfgContainer [2020-10-29 13:59:03,320 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-29 13:59:03,321 INFO L168 Benchmark]: Toolchain (without parser) took 102115.17 ms. Allocated memory was 151.0 MB in the beginning and 2.8 GB in the end (delta: 2.6 GB). Free memory was 124.2 MB in the beginning and 2.0 GB in the end (delta: -1.9 GB). Peak memory consumption was 731.1 MB. Max. memory is 8.0 GB. [2020-10-29 13:59:03,322 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 151.0 MB. Free memory is still 124.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-29 13:59:03,323 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1287.68 ms. Allocated memory is still 151.0 MB. Free memory was 123.5 MB in the beginning and 89.1 MB in the end (delta: 34.4 MB). Peak memory consumption was 34.6 MB. Max. memory is 8.0 GB. [2020-10-29 13:59:03,323 INFO L168 Benchmark]: Boogie Preprocessor took 133.18 ms. Allocated memory is still 151.0 MB. Free memory was 89.1 MB in the beginning and 84.0 MB in the end (delta: 5.1 MB). Peak memory consumption was 5.2 MB. Max. memory is 8.0 GB. [2020-10-29 13:59:03,324 INFO L168 Benchmark]: RCFGBuilder took 1921.43 ms. Allocated memory was 151.0 MB in the beginning and 187.7 MB in the end (delta: 36.7 MB). Free memory was 84.0 MB in the beginning and 76.4 MB in the end (delta: 7.6 MB). Peak memory consumption was 45.5 MB. Max. memory is 8.0 GB. [2020-10-29 13:59:03,325 INFO L168 Benchmark]: TraceAbstraction took 98757.28 ms. Allocated memory was 187.7 MB in the beginning and 2.8 GB in the end (delta: 2.6 GB). Free memory was 75.8 MB in the beginning and 2.0 GB in the end (delta: -2.0 GB). Peak memory consumption was 645.7 MB. Max. memory is 8.0 GB. [2020-10-29 13:59:03,328 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 151.0 MB. Free memory is still 124.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 1287.68 ms. Allocated memory is still 151.0 MB. Free memory was 123.5 MB in the beginning and 89.1 MB in the end (delta: 34.4 MB). Peak memory consumption was 34.6 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 133.18 ms. Allocated memory is still 151.0 MB. Free memory was 89.1 MB in the beginning and 84.0 MB in the end (delta: 5.1 MB). Peak memory consumption was 5.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1921.43 ms. Allocated memory was 151.0 MB in the beginning and 187.7 MB in the end (delta: 36.7 MB). Free memory was 84.0 MB in the beginning and 76.4 MB in the end (delta: 7.6 MB). Peak memory consumption was 45.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 98757.28 ms. Allocated memory was 187.7 MB in the beginning and 2.8 GB in the end (delta: 2.6 GB). Free memory was 75.8 MB in the beginning and 2.0 GB in the end (delta: -2.0 GB). Peak memory consumption was 645.7 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 4]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L1] int __return_main; [L17] msg_t nomsg = (msg_t )-1; [L18] port_t p12 = 0; [L19] char p12_old = '\x0'; [L20] char p12_new = '\x0'; [L21] _Bool ep12 = 0; [L22] port_t p13 = 0; [L23] char p13_old = '\x0'; [L24] char p13_new = '\x0'; [L25] _Bool ep13 = 0; [L26] port_t p21 = 0; [L27] char p21_old = '\x0'; [L28] char p21_new = '\x0'; [L29] _Bool ep21 = 0; [L30] port_t p23 = 0; [L31] char p23_old = '\x0'; [L32] char p23_new = '\x0'; [L33] _Bool ep23 = 0; [L34] port_t p31 = 0; [L35] char p31_old = '\x0'; [L36] char p31_new = '\x0'; [L37] _Bool ep31 = 0; [L38] port_t p32 = 0; [L39] char p32_old = '\x0'; [L40] char p32_new = '\x0'; [L41] _Bool ep32 = 0; [L42] char id1 = '\x0'; [L43] unsigned char r1 = '\x0'; [L44] char st1 = '\x0'; [L45] char nl1 = '\x0'; [L46] char m1 = '\x0'; [L47] char max1 = '\x0'; [L48] _Bool mode1 = 0; [L49] _Bool newmax1 = 0; [L50] char id2 = '\x0'; [L51] unsigned char r2 = '\x0'; [L52] char st2 = '\x0'; [L53] char nl2 = '\x0'; [L54] char m2 = '\x0'; [L55] char max2 = '\x0'; [L56] _Bool mode2 = 0; [L57] _Bool newmax2 = 0; [L58] char id3 = '\x0'; [L59] unsigned char r3 = '\x0'; [L60] char st3 = '\x0'; [L61] char nl3 = '\x0'; [L62] char m3 = '\x0'; [L63] char max3 = '\x0'; [L64] _Bool mode3 = 0; [L65] _Bool newmax3 = 0; [L69] void (*nodes[3])() = { &node1, &node2, &node3 }; [L73] int __return_1873; [L74] int __return_2019; [L75] int __return_2152; [L76] int __return_2288; [L77] int __return_3084; [L78] int __return_3053; [L79] int __return_2989; [L80] int __return_2955; [L81] int __return_2551; [L82] int __return_2840; [L83] int __return_2806; [L84] int __return_2721; [L85] int __return_2426; [L88] int main__c1; [L89] int main__i2; [L90] main__c1 = 0 [L91] ep12 = __VERIFIER_nondet_bool() [L92] ep13 = __VERIFIER_nondet_bool() [L93] ep21 = __VERIFIER_nondet_bool() [L94] ep23 = __VERIFIER_nondet_bool() [L95] ep31 = __VERIFIER_nondet_bool() [L96] ep32 = __VERIFIER_nondet_bool() [L97] id1 = __VERIFIER_nondet_char() [L98] r1 = __VERIFIER_nondet_uchar() [L99] st1 = __VERIFIER_nondet_char() [L100] nl1 = __VERIFIER_nondet_char() [L101] m1 = __VERIFIER_nondet_char() [L102] max1 = __VERIFIER_nondet_char() [L103] mode1 = __VERIFIER_nondet_bool() [L104] newmax1 = __VERIFIER_nondet_bool() [L105] id2 = __VERIFIER_nondet_char() [L106] r2 = __VERIFIER_nondet_uchar() [L107] st2 = __VERIFIER_nondet_char() [L108] nl2 = __VERIFIER_nondet_char() [L109] m2 = __VERIFIER_nondet_char() [L110] max2 = __VERIFIER_nondet_char() [L111] mode2 = __VERIFIER_nondet_bool() [L112] newmax2 = __VERIFIER_nondet_bool() [L113] id3 = __VERIFIER_nondet_char() [L114] r3 = __VERIFIER_nondet_uchar() [L115] st3 = __VERIFIER_nondet_char() [L116] nl3 = __VERIFIER_nondet_char() [L117] m3 = __VERIFIER_nondet_char() [L118] max3 = __VERIFIER_nondet_char() [L119] mode3 = __VERIFIER_nondet_bool() [L120] newmax3 = __VERIFIER_nondet_bool() [L122] _Bool init__r121; [L123] _Bool init__r131; [L124] _Bool init__r211; [L125] _Bool init__r231; [L126] _Bool init__r311; [L127] _Bool init__r321; [L128] _Bool init__r122; [L129] int init__tmp; [L130] _Bool init__r132; [L131] int init__tmp___0; [L132] _Bool init__r212; [L133] int init__tmp___1; [L134] _Bool init__r232; [L135] int init__tmp___2; [L136] _Bool init__r312; [L137] int init__tmp___3; [L138] _Bool init__r322; [L139] int init__tmp___4; [L140] int init__tmp___5; [L141] init__r121 = ep12 [L142] init__r131 = ep13 [L143] init__r211 = ep21 [L144] init__r231 = ep23 [L145] init__r311 = ep31 [L146] init__r321 = ep32 [L147] COND FALSE !(!(init__r121 == 0)) [L3188] COND FALSE !(!(init__r131 == 0)) [L3204] init__tmp = 0 [L151] init__r122 = (_Bool)init__tmp [L152] COND FALSE !(!(init__r131 == 0)) [L3165] COND FALSE !(!(init__r121 == 0)) [L3181] init__tmp___0 = 0 [L156] init__r132 = (_Bool)init__tmp___0 [L157] COND FALSE !(!(init__r211 == 0)) [L3142] COND FALSE !(!(init__r231 == 0)) [L3158] init__tmp___1 = 0 [L161] init__r212 = (_Bool)init__tmp___1 [L162] COND FALSE !(!(init__r231 == 0)) [L3119] COND FALSE !(!(init__r211 == 0)) [L3135] init__tmp___2 = 0 [L166] init__r232 = (_Bool)init__tmp___2 [L167] COND FALSE !(!(init__r311 == 0)) [L3096] COND FALSE !(!(init__r321 == 0)) [L3112] init__tmp___3 = 0 [L171] init__r312 = (_Bool)init__tmp___3 [L172] COND FALSE !(!(init__r321 == 0)) [L3073] COND FALSE !(!(init__r311 == 0)) [L3089] init__tmp___4 = 0 [L176] init__r322 = (_Bool)init__tmp___4 [L177] COND TRUE ((int)id1) != ((int)id2) [L179] COND TRUE ((int)id1) != ((int)id3) [L181] COND TRUE ((int)id2) != ((int)id3) [L183] COND TRUE ((int)id1) >= 0 [L185] COND TRUE ((int)id2) >= 0 [L187] COND TRUE ((int)id3) >= 0 [L189] COND TRUE ((int)r1) == 0 [L191] COND TRUE ((int)r2) == 0 [L193] COND TRUE ((int)r3) == 0 [L195] COND TRUE ((int)max1) == ((int)id1) [L197] COND TRUE ((int)max2) == ((int)id2) [L199] COND TRUE ((int)max3) == ((int)id3) [L201] COND TRUE ((int)st1) == 0 [L203] COND TRUE ((int)st2) == 0 [L205] COND TRUE ((int)st3) == 0 [L207] COND TRUE ((int)nl1) == 0 [L209] COND TRUE ((int)nl2) == 0 [L211] COND TRUE ((int)nl3) == 0 [L213] COND TRUE ((int)mode1) == 0 [L215] COND TRUE ((int)mode2) == 0 [L217] COND TRUE ((int)mode3) == 0 [L219] COND TRUE !(newmax1 == 0) [L221] COND TRUE !(newmax2 == 0) [L223] COND TRUE !(newmax3 == 0) [L225] init__tmp___5 = 1 [L226] __return_1873 = init__tmp___5 [L227] main__i2 = __return_1873 [L228] COND TRUE main__i2 != 0 [L230] p12_old = nomsg [L231] p12_new = nomsg [L232] p13_old = nomsg [L233] p13_new = nomsg [L234] p21_old = nomsg [L235] p21_new = nomsg [L236] p23_old = nomsg [L237] p23_new = nomsg [L238] p31_old = nomsg [L239] p31_new = nomsg [L240] p32_old = nomsg [L241] p32_new = nomsg [L242] main__i2 = 0 [L244] _Bool node1__newmax; [L245] node1__newmax = 0 [L246] COND FALSE !(!(mode1 == 0)) [L252] COND TRUE ((int)r1) < 2 [L254] COND FALSE !(!(ep12 == 0)) [L267] COND FALSE !(!(ep13 == 0)) [L280] mode1 = 1 [L282] _Bool node2__newmax; [L283] node2__newmax = 0 [L284] COND FALSE !(!(mode2 == 0)) [L290] COND TRUE ((int)r2) < 2 [L292] COND FALSE !(!(ep21 == 0)) [L305] COND FALSE !(!(ep23 == 0)) [L318] mode2 = 1 [L320] _Bool node3__newmax; [L321] node3__newmax = 0 [L322] COND FALSE !(!(mode3 == 0)) [L328] COND TRUE ((int)r3) < 2 [L330] COND FALSE !(!(ep31 == 0)) [L343] COND FALSE !(!(ep32 == 0)) [L356] mode3 = 1 [L357] p12_old = p12_new [L358] p12_new = nomsg [L359] p13_old = p13_new [L360] p13_new = nomsg [L361] p21_old = p21_new [L362] p21_new = nomsg [L363] p23_old = p23_new [L364] p23_new = nomsg [L365] p31_old = p31_new [L366] p31_new = nomsg [L367] p32_old = p32_new [L368] p32_new = nomsg [L370] int check__tmp; [L371] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L373] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L375] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L377] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L379] COND FALSE !(((int)r1) >= 2) [L385] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L387] COND TRUE ((int)r1) < 2 [L389] COND FALSE !(((int)r1) >= 2) [L395] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L397] COND TRUE ((int)r1) < 2 [L399] check__tmp = 1 [L400] __return_2019 = check__tmp [L401] main__c1 = __return_2019 [L403] _Bool __tmp_1; [L404] __tmp_1 = main__c1 [L405] _Bool assert__arg; [L406] assert__arg = __tmp_1 [L407] COND FALSE !(assert__arg == 0) [L414] _Bool node1__newmax; [L415] node1__newmax = 0 [L416] COND TRUE !(mode1 == 0) [L418] COND FALSE !(r1 == 255) [L424] r1 = r1 + 1 [L425] COND FALSE !(!(ep21 == 0)) [L434] COND FALSE !(!(ep31 == 0)) [L443] newmax1 = node1__newmax [L444] COND FALSE !(((int)r1) == 2) [L450] mode1 = 0 [L452] _Bool node2__newmax; [L453] node2__newmax = 0 [L454] COND TRUE !(mode2 == 0) [L456] COND FALSE !(r2 == 255) [L462] r2 = r2 + 1 [L463] COND FALSE !(!(ep12 == 0)) [L472] COND FALSE !(!(ep32 == 0)) [L481] newmax2 = node2__newmax [L482] COND FALSE !(((int)r2) == 2) [L488] mode2 = 0 [L490] _Bool node3__newmax; [L491] node3__newmax = 0 [L492] COND TRUE !(mode3 == 0) [L494] COND FALSE !(r3 == 255) [L500] r3 = r3 + 1 [L501] COND FALSE !(!(ep13 == 0)) [L510] COND FALSE !(!(ep23 == 0)) [L519] newmax3 = node3__newmax [L520] COND FALSE !(((int)r3) == 2) [L526] mode3 = 0 [L527] p12_old = p12_new [L528] p12_new = nomsg [L529] p13_old = p13_new [L530] p13_new = nomsg [L531] p21_old = p21_new [L532] p21_new = nomsg [L533] p23_old = p23_new [L534] p23_new = nomsg [L535] p31_old = p31_new [L536] p31_new = nomsg [L537] p32_old = p32_new [L538] p32_new = nomsg [L540] int check__tmp; [L541] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L543] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L545] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L547] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L549] COND FALSE !(((int)r1) >= 2) [L555] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L557] COND TRUE ((int)r1) < 2 [L559] COND FALSE !(((int)r1) >= 2) [L565] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L567] COND TRUE ((int)r1) < 2 [L569] check__tmp = 1 [L570] __return_2152 = check__tmp [L571] main__c1 = __return_2152 [L573] _Bool __tmp_2; [L574] __tmp_2 = main__c1 [L575] _Bool assert__arg; [L576] assert__arg = __tmp_2 [L577] COND FALSE !(assert__arg == 0) [L584] _Bool node1__newmax; [L585] node1__newmax = 0 [L586] COND FALSE !(!(mode1 == 0)) [L592] COND TRUE ((int)r1) < 2 [L594] COND FALSE !(!(ep12 == 0)) [L607] COND FALSE !(!(ep13 == 0)) [L620] mode1 = 1 [L622] _Bool node2__newmax; [L623] node2__newmax = 0 [L624] COND FALSE !(!(mode2 == 0)) [L630] COND TRUE ((int)r2) < 2 [L632] COND FALSE !(!(ep21 == 0)) [L645] COND FALSE !(!(ep23 == 0)) [L658] mode2 = 1 [L660] _Bool node3__newmax; [L661] node3__newmax = 0 [L662] COND FALSE !(!(mode3 == 0)) [L668] COND TRUE ((int)r3) < 2 [L670] COND FALSE !(!(ep31 == 0)) [L683] COND FALSE !(!(ep32 == 0)) [L696] mode3 = 1 [L697] p12_old = p12_new [L698] p12_new = nomsg [L699] p13_old = p13_new [L700] p13_new = nomsg [L701] p21_old = p21_new [L702] p21_new = nomsg [L703] p23_old = p23_new [L704] p23_new = nomsg [L705] p31_old = p31_new [L706] p31_new = nomsg [L707] p32_old = p32_new [L708] p32_new = nomsg [L710] int check__tmp; [L711] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L713] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L715] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L717] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L719] COND FALSE !(((int)r1) >= 2) [L725] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L727] COND TRUE ((int)r1) < 2 [L729] COND FALSE !(((int)r1) >= 2) [L735] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L737] COND TRUE ((int)r1) < 2 [L739] check__tmp = 1 [L740] __return_2288 = check__tmp [L741] main__c1 = __return_2288 [L743] _Bool __tmp_3; [L744] __tmp_3 = main__c1 [L745] _Bool assert__arg; [L746] assert__arg = __tmp_3 [L747] COND FALSE !(assert__arg == 0) [L754] _Bool node1__newmax; [L755] node1__newmax = 0 [L756] COND TRUE !(mode1 == 0) [L758] COND FALSE !(r1 == 255) [L764] r1 = r1 + 1 [L765] COND FALSE !(!(ep21 == 0)) [L774] COND FALSE !(!(ep31 == 0)) [L783] newmax1 = node1__newmax [L784] COND TRUE ((int)r1) == 2 [L786] COND TRUE ((int)max1) == ((int)id1) [L788] st1 = 1 [L789] mode1 = 0 [L791] _Bool node2__newmax; [L792] node2__newmax = 0 [L793] COND TRUE !(mode2 == 0) [L795] COND FALSE !(r2 == 255) [L801] r2 = r2 + 1 [L802] COND FALSE !(!(ep12 == 0)) [L811] COND FALSE !(!(ep32 == 0)) [L820] newmax2 = node2__newmax [L821] COND TRUE ((int)r2) == 2 [L823] COND TRUE ((int)max2) == ((int)id2) [L825] st2 = 1 [L826] mode2 = 0 [L828] _Bool node3__newmax; [L829] node3__newmax = 0 [L830] COND TRUE !(mode3 == 0) [L832] COND FALSE !(r3 == 255) [L838] r3 = r3 + 1 [L839] COND FALSE !(!(ep13 == 0)) [L848] COND FALSE !(!(ep23 == 0)) [L857] newmax3 = node3__newmax [L858] COND TRUE ((int)r3) == 2 [L860] COND TRUE ((int)max3) == ((int)id3) [L862] st3 = 1 [L863] mode3 = 0 [L864] p12_old = p12_new [L865] p12_new = nomsg [L866] p13_old = p13_new [L867] p13_new = nomsg [L868] p21_old = p21_new [L869] p21_new = nomsg [L870] p23_old = p23_new [L871] p23_new = nomsg [L872] p31_old = p31_new [L873] p31_new = nomsg [L874] p32_old = p32_new [L875] p32_new = nomsg [L877] int check__tmp; [L878] COND FALSE !(((((int)st1) + ((int)st2)) + ((int)st3)) <= 1) [L884] check__tmp = 0 [L885] __return_3084 = check__tmp [L886] main__c1 = __return_3084 [L888] _Bool __tmp_4; [L889] __tmp_4 = main__c1 [L890] _Bool assert__arg; [L891] assert__arg = __tmp_4 [L892] COND TRUE assert__arg == 0 [L894] CALL reach_error() [L4] __assert_fail("0", "pals_opt-floodmax.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c", 4, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 431 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 98.6s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 41.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 7763 SDtfs, 8759 SDslu, 4564 SDs, 0 SdLazy, 8520 SolverSat, 208 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 23.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 69 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 6.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=60587occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 11.4s AutomataMinimizationTime, 9 MinimizatonAttempts, 247 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 43.8s InterpolantComputationTime, 1511 NumberOfCodeBlocks, 1511 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 1347 ConstructedInterpolants, 0 QuantifiedInterpolants, 1477440 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...