/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+sep-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 05:37:45,337 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 05:37:45,340 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 05:37:45,379 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 05:37:45,380 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 05:37:45,381 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 05:37:45,383 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 05:37:45,386 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 05:37:45,388 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 05:37:45,389 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 05:37:45,391 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 05:37:45,392 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 05:37:45,393 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 05:37:45,394 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 05:37:45,395 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 05:37:45,397 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 05:37:45,398 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 05:37:45,399 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 05:37:45,411 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 05:37:45,414 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 05:37:45,416 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 05:37:45,419 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 05:37:45,421 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 05:37:45,422 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 05:37:45,425 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 05:37:45,426 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 05:37:45,426 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 05:37:45,427 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 05:37:45,428 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 05:37:45,429 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 05:37:45,429 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 05:37:45,430 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 05:37:45,431 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 05:37:45,432 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 05:37:45,434 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 05:37:45,434 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 05:37:45,435 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 05:37:45,436 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 05:37:45,436 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 05:37:45,437 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 05:37:45,438 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 05:37:45,442 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 05:37:45,497 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 05:37:45,497 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 05:37:45,499 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 05:37:45,499 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 05:37:45,500 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 05:37:45,500 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 05:37:45,500 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 05:37:45,501 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 05:37:45,501 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 05:37:45,501 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 05:37:45,501 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 05:37:45,502 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 05:37:45,502 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 05:37:45,502 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 05:37:45,502 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 05:37:45,503 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 05:37:45,503 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 05:37:45,503 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 05:37:45,504 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 05:37:45,504 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 05:37:45,504 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 05:37:45,505 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 05:37:45,505 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 05:37:45,505 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 05:37:45,505 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 05:37:45,506 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 05:37:45,506 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 05:37:45,506 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 05:37:45,507 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 05:37:45,507 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 05:37:45,924 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 05:37:45,972 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 05:37:45,977 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 05:37:45,979 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 05:37:45,979 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 05:37:45,980 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+sep-reducer.c [2020-10-27 05:37:46,074 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2e7a23f7d/ef19dcdac00b452db86cb386edeb362e/FLAG56fe1e4f3 [2020-10-27 05:37:46,966 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 05:37:46,967 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+sep-reducer.c [2020-10-27 05:37:46,993 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2e7a23f7d/ef19dcdac00b452db86cb386edeb362e/FLAG56fe1e4f3 [2020-10-27 05:37:47,495 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2e7a23f7d/ef19dcdac00b452db86cb386edeb362e [2020-10-27 05:37:47,498 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 05:37:47,504 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 05:37:47,505 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 05:37:47,506 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 05:37:47,510 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 05:37:47,511 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:37:47" (1/1) ... [2020-10-27 05:37:47,514 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c17ab4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:37:47, skipping insertion in model container [2020-10-27 05:37:47,515 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:37:47" (1/1) ... [2020-10-27 05:37:47,523 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 05:37:47,682 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 05:37:48,814 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 05:37:48,839 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 05:37:49,240 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 05:37:49,278 INFO L208 MainTranslator]: Completed translation [2020-10-27 05:37:49,278 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:37:49 WrapperNode [2020-10-27 05:37:49,279 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 05:37:49,280 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 05:37:49,280 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 05:37:49,281 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 05:37:49,299 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:37:49" (1/1) ... [2020-10-27 05:37:49,301 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:37:49" (1/1) ... [2020-10-27 05:37:49,392 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:37:49" (1/1) ... [2020-10-27 05:37:49,395 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:37:49" (1/1) ... [2020-10-27 05:37:49,536 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:37:49" (1/1) ... [2020-10-27 05:37:49,575 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:37:49" (1/1) ... [2020-10-27 05:37:49,602 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:37:49" (1/1) ... [2020-10-27 05:37:49,633 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 05:37:49,636 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 05:37:49,636 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 05:37:49,636 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 05:37:49,637 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:37:49" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 05:37:49,707 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 05:37:49,708 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 05:37:49,708 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 05:37:49,708 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 05:37:49,708 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 05:37:49,708 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 05:37:49,709 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 05:37:49,709 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 05:37:49,709 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 05:37:49,709 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 05:37:49,709 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 05:37:49,709 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 05:37:49,709 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 05:37:49,710 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 05:37:49,710 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 05:37:49,710 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 05:37:49,710 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 05:37:49,710 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 05:37:49,710 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 05:37:49,711 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 05:37:49,711 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 05:37:49,711 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 05:37:49,711 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 05:37:49,711 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 05:37:49,711 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 05:37:49,711 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 05:37:49,712 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 05:37:53,583 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 05:37:53,584 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-27 05:37:53,589 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:37:53 BoogieIcfgContainer [2020-10-27 05:37:53,589 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 05:37:53,592 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 05:37:53,593 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 05:37:53,596 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 05:37:53,597 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 05:37:47" (1/3) ... [2020-10-27 05:37:53,598 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54078109 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:37:53, skipping insertion in model container [2020-10-27 05:37:53,598 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:37:49" (2/3) ... [2020-10-27 05:37:53,598 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54078109 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:37:53, skipping insertion in model container [2020-10-27 05:37:53,598 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:37:53" (3/3) ... [2020-10-27 05:37:53,600 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+sep-reducer.c [2020-10-27 05:37:53,613 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 05:37:53,623 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 05:37:53,636 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 05:37:53,685 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 05:37:53,686 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 05:37:53,686 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 05:37:53,686 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 05:37:53,686 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 05:37:53,686 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 05:37:53,686 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 05:37:53,686 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 05:37:53,735 INFO L276 IsEmpty]: Start isEmpty. Operand 1299 states. [2020-10-27 05:37:53,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-27 05:37:53,766 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:37:53,767 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] [2020-10-27 05:37:53,767 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:37:53,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:37:53,774 INFO L82 PathProgramCache]: Analyzing trace with hash 273753204, now seen corresponding path program 1 times [2020-10-27 05:37:53,787 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:37:53,787 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1287874060] [2020-10-27 05:37:53,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:37:54,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:37:54,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:37:54,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:37:55,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:37:55,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:37:58,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:37:59,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:37:59,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-27 05:37:59,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 05:37:59,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5043 [2020-10-27 05:37:59,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:37:59,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 05:37:59,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:37:59,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-27 05:37:59,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-27 05:38:01,594 WARN L193 SmtUtils]: Spent 1.80 s on a formula simplification that was a NOOP. DAG size: 529 [2020-10-27 05:38:01,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:38:01,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:38:01,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:38:01,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:38:01,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:38:01,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:38:01,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-27 05:38:01,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:38:01,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:38:01,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:38:01,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:38:01,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:38:01,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:38:01,771 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1287874060] [2020-10-27 05:38:01,773 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:38:01,774 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:38:01,774 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115963121] [2020-10-27 05:38:01,780 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 05:38:01,780 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:38:01,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 05:38:01,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-27 05:38:01,797 INFO L87 Difference]: Start difference. First operand 1299 states. Second operand 6 states. [2020-10-27 05:38:03,798 WARN L193 SmtUtils]: Spent 1.88 s on a formula simplification that was a NOOP. DAG size: 538 [2020-10-27 05:38:15,661 WARN L193 SmtUtils]: Spent 1.84 s on a formula simplification that was a NOOP. DAG size: 536 [2020-10-27 05:38:17,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:38:17,298 INFO L93 Difference]: Finished difference Result 2494 states and 4285 transitions. [2020-10-27 05:38:17,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 05:38:17,304 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 57 [2020-10-27 05:38:17,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:38:17,338 INFO L225 Difference]: With dead ends: 2494 [2020-10-27 05:38:17,338 INFO L226 Difference]: Without dead ends: 1559 [2020-10-27 05:38:17,347 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-27 05:38:17,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1559 states. [2020-10-27 05:38:17,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1559 to 1553. [2020-10-27 05:38:17,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1553 states. [2020-10-27 05:38:17,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1553 states to 1553 states and 2022 transitions. [2020-10-27 05:38:17,532 INFO L78 Accepts]: Start accepts. Automaton has 1553 states and 2022 transitions. Word has length 57 [2020-10-27 05:38:17,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:38:17,534 INFO L481 AbstractCegarLoop]: Abstraction has 1553 states and 2022 transitions. [2020-10-27 05:38:17,534 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 05:38:17,535 INFO L276 IsEmpty]: Start isEmpty. Operand 1553 states and 2022 transitions. [2020-10-27 05:38:17,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-27 05:38:17,551 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:38:17,551 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] [2020-10-27 05:38:17,552 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 05:38:17,552 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:38:17,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:38:17,553 INFO L82 PathProgramCache]: Analyzing trace with hash -1320308122, now seen corresponding path program 1 times [2020-10-27 05:38:17,553 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:38:17,554 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1773818767] [2020-10-27 05:38:17,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:38:17,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:38:17,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:38:17,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:38:18,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:38:19,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:38:19,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:38:20,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:38:21,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:38:21,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:38:21,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:38:22,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:38:22,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:38:22,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-27 05:38:22,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-27 05:38:22,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-27 05:38:22,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:38:22,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 05:38:22,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:38:22,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-27 05:38:22,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:38:24,950 WARN L193 SmtUtils]: Spent 1.79 s on a formula simplification that was a NOOP. DAG size: 529 [2020-10-27 05:38:24,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:38:24,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:38:24,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:38:25,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:38:25,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:38:25,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:38:25,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-27 05:38:25,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:38:25,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:38:25,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:38:25,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:38:25,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:38:25,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:38:25,118 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1773818767] [2020-10-27 05:38:25,118 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:38:25,119 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-27 05:38:25,119 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481768693] [2020-10-27 05:38:25,120 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-27 05:38:25,121 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:38:25,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-27 05:38:25,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2020-10-27 05:38:25,122 INFO L87 Difference]: Start difference. First operand 1553 states and 2022 transitions. Second operand 15 states. [2020-10-27 05:38:29,382 WARN L193 SmtUtils]: Spent 4.04 s on a formula simplification. DAG size of input: 553 DAG size of output: 551 [2020-10-27 05:38:40,560 WARN L193 SmtUtils]: Spent 2.02 s on a formula simplification that was a NOOP. DAG size: 545 [2020-10-27 05:38:43,252 WARN L193 SmtUtils]: Spent 1.96 s on a formula simplification that was a NOOP. DAG size: 543 [2020-10-27 05:38:45,227 WARN L193 SmtUtils]: Spent 1.91 s on a formula simplification that was a NOOP. DAG size: 537 [2020-10-27 05:38:47,224 WARN L193 SmtUtils]: Spent 1.92 s on a formula simplification that was a NOOP. DAG size: 536 [2020-10-27 05:38:54,496 WARN L193 SmtUtils]: Spent 1.97 s on a formula simplification that was a NOOP. DAG size: 542 [2020-10-27 05:38:55,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:38:55,504 INFO L93 Difference]: Finished difference Result 4080 states and 5466 transitions. [2020-10-27 05:38:55,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-27 05:38:55,505 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 58 [2020-10-27 05:38:55,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:38:55,520 INFO L225 Difference]: With dead ends: 4080 [2020-10-27 05:38:55,521 INFO L226 Difference]: Without dead ends: 2744 [2020-10-27 05:38:55,525 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 16.9s TimeCoverageRelationStatistics Valid=242, Invalid=880, Unknown=0, NotChecked=0, Total=1122 [2020-10-27 05:38:55,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2744 states. [2020-10-27 05:38:55,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2744 to 2369. [2020-10-27 05:38:55,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2369 states. [2020-10-27 05:38:55,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2369 states to 2369 states and 3099 transitions. [2020-10-27 05:38:55,672 INFO L78 Accepts]: Start accepts. Automaton has 2369 states and 3099 transitions. Word has length 58 [2020-10-27 05:38:55,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:38:55,673 INFO L481 AbstractCegarLoop]: Abstraction has 2369 states and 3099 transitions. [2020-10-27 05:38:55,673 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-27 05:38:55,673 INFO L276 IsEmpty]: Start isEmpty. Operand 2369 states and 3099 transitions. [2020-10-27 05:38:55,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-27 05:38:55,678 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:38:55,678 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] [2020-10-27 05:38:55,678 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 05:38:55,678 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:38:55,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:38:55,679 INFO L82 PathProgramCache]: Analyzing trace with hash 2097672199, now seen corresponding path program 1 times [2020-10-27 05:38:55,679 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:38:55,679 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [614284465] [2020-10-27 05:38:55,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:38:55,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:38:55,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:38:55,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:38:55,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:38:57,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:38:57,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:38:57,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:38:58,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:38:59,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:38:59,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:39:00,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:39:00,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:39:00,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-27 05:39:00,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-27 05:39:00,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-27 05:39:00,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:39:00,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 05:39:00,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:39:00,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-27 05:39:00,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:39:02,706 WARN L193 SmtUtils]: Spent 1.76 s on a formula simplification that was a NOOP. DAG size: 529 [2020-10-27 05:39:02,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:39:02,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:39:02,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:39:02,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:39:02,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:39:02,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:39:02,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-27 05:39:02,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:39:02,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:39:02,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:39:02,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:39:02,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:39:02,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:39:02,833 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [614284465] [2020-10-27 05:39:02,833 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:39:02,834 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:39:02,834 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66270584] [2020-10-27 05:39:02,834 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 05:39:02,835 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:39:02,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 05:39:02,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 05:39:02,835 INFO L87 Difference]: Start difference. First operand 2369 states and 3099 transitions. Second operand 6 states. [2020-10-27 05:39:04,797 WARN L193 SmtUtils]: Spent 1.82 s on a formula simplification that was a NOOP. DAG size: 537 [2020-10-27 05:39:10,939 WARN L193 SmtUtils]: Spent 1.88 s on a formula simplification that was a NOOP. DAG size: 535 [2020-10-27 05:39:13,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:39:13,573 INFO L93 Difference]: Finished difference Result 4111 states and 5433 transitions. [2020-10-27 05:39:13,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 05:39:13,574 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 60 [2020-10-27 05:39:13,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:39:13,587 INFO L225 Difference]: With dead ends: 4111 [2020-10-27 05:39:13,587 INFO L226 Difference]: Without dead ends: 2482 [2020-10-27 05:39:13,591 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-10-27 05:39:13,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2482 states. [2020-10-27 05:39:13,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2482 to 2473. [2020-10-27 05:39:13,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2473 states. [2020-10-27 05:39:13,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2473 states to 2473 states and 3225 transitions. [2020-10-27 05:39:13,744 INFO L78 Accepts]: Start accepts. Automaton has 2473 states and 3225 transitions. Word has length 60 [2020-10-27 05:39:13,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:39:13,745 INFO L481 AbstractCegarLoop]: Abstraction has 2473 states and 3225 transitions. [2020-10-27 05:39:13,745 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 05:39:13,745 INFO L276 IsEmpty]: Start isEmpty. Operand 2473 states and 3225 transitions. [2020-10-27 05:39:13,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-27 05:39:13,749 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:39:13,749 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] [2020-10-27 05:39:13,749 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 05:39:13,750 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:39:13,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:39:13,750 INFO L82 PathProgramCache]: Analyzing trace with hash -761155748, now seen corresponding path program 1 times [2020-10-27 05:39:13,750 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:39:13,751 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1540017351] [2020-10-27 05:39:13,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:39:13,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:39:13,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:39:14,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:39:14,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:39:14,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:39:15,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:39:15,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:39:15,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:39:16,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:39:17,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:39:18,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:39:18,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:39:18,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-27 05:39:18,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-27 05:39:18,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-27 05:39:18,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:39:18,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 05:39:18,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:39:18,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-27 05:39:18,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 05:39:21,139 WARN L193 SmtUtils]: Spent 1.81 s on a formula simplification that was a NOOP. DAG size: 529 [2020-10-27 05:39:21,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:39:21,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:39:21,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:39:21,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:39:21,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:39:21,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:39:21,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-27 05:39:21,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:39:21,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:39:21,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:39:21,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:39:21,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:39:21,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:39:21,283 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1540017351] [2020-10-27 05:39:21,284 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:39:21,284 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-10-27 05:39:21,284 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321100561] [2020-10-27 05:39:21,284 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-27 05:39:21,285 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:39:21,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-27 05:39:21,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2020-10-27 05:39:21,286 INFO L87 Difference]: Start difference. First operand 2473 states and 3225 transitions. Second operand 17 states. [2020-10-27 05:39:21,439 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 49 [2020-10-27 05:39:25,891 WARN L193 SmtUtils]: Spent 4.36 s on a formula simplification. DAG size of input: 570 DAG size of output: 567 [2020-10-27 05:39:26,743 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 46 [2020-10-27 05:39:34,118 WARN L193 SmtUtils]: Spent 2.03 s on a formula simplification that was a NOOP. DAG size: 544 [2020-10-27 05:39:36,539 WARN L193 SmtUtils]: Spent 1.99 s on a formula simplification that was a NOOP. DAG size: 542 [2020-10-27 05:39:38,534 WARN L193 SmtUtils]: Spent 1.93 s on a formula simplification that was a NOOP. DAG size: 537 [2020-10-27 05:39:40,549 WARN L193 SmtUtils]: Spent 1.89 s on a formula simplification that was a NOOP. DAG size: 536 [2020-10-27 05:39:48,393 WARN L193 SmtUtils]: Spent 1.88 s on a formula simplification that was a NOOP. DAG size: 541 [2020-10-27 05:39:49,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:39:49,887 INFO L93 Difference]: Finished difference Result 3977 states and 5375 transitions. [2020-10-27 05:39:49,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-10-27 05:39:49,888 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 60 [2020-10-27 05:39:49,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:39:49,901 INFO L225 Difference]: With dead ends: 3977 [2020-10-27 05:39:49,902 INFO L226 Difference]: Without dead ends: 2696 [2020-10-27 05:39:49,906 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 743 ImplicationChecksByTransitivity, 18.2s TimeCoverageRelationStatistics Valid=514, Invalid=2242, Unknown=0, NotChecked=0, Total=2756 [2020-10-27 05:39:49,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2696 states. [2020-10-27 05:39:50,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2696 to 2062. [2020-10-27 05:39:50,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2062 states. [2020-10-27 05:39:50,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2062 states to 2062 states and 2717 transitions. [2020-10-27 05:39:50,068 INFO L78 Accepts]: Start accepts. Automaton has 2062 states and 2717 transitions. Word has length 60 [2020-10-27 05:39:50,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:39:50,068 INFO L481 AbstractCegarLoop]: Abstraction has 2062 states and 2717 transitions. [2020-10-27 05:39:50,068 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-27 05:39:50,068 INFO L276 IsEmpty]: Start isEmpty. Operand 2062 states and 2717 transitions. [2020-10-27 05:39:50,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-27 05:39:50,071 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:39:50,071 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] [2020-10-27 05:39:50,072 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 05:39:50,072 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:39:50,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:39:50,072 INFO L82 PathProgramCache]: Analyzing trace with hash -1603416637, now seen corresponding path program 1 times [2020-10-27 05:39:50,072 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:39:50,073 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [724911379] [2020-10-27 05:39:50,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:39:50,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:39:50,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:39:50,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:39:50,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:39:50,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:39:50,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:39:51,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:39:51,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:39:52,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:39:52,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:39:53,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:39:55,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:39:55,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:39:55,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-27 05:39:55,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-27 05:39:55,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-27 05:39:55,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:39:55,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 05:39:55,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:39:55,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-27 05:39:55,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:39:57,272 WARN L193 SmtUtils]: Spent 1.94 s on a formula simplification that was a NOOP. DAG size: 529 [2020-10-27 05:39:57,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:39:57,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:39:57,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:39:57,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:39:57,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:39:57,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:39:57,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-27 05:39:57,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:39:57,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:39:57,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:39:57,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:39:57,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:39:57,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:39:57,399 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [724911379] [2020-10-27 05:39:57,399 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:39:57,399 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 05:39:57,399 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713421227] [2020-10-27 05:39:57,400 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 05:39:57,400 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:39:57,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 05:39:57,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-27 05:39:57,401 INFO L87 Difference]: Start difference. First operand 2062 states and 2717 transitions. Second operand 10 states. [2020-10-27 05:39:59,521 WARN L193 SmtUtils]: Spent 2.00 s on a formula simplification that was a NOOP. DAG size: 542 [2020-10-27 05:40:05,343 WARN L193 SmtUtils]: Spent 1.96 s on a formula simplification that was a NOOP. DAG size: 538 [2020-10-27 05:40:07,539 WARN L193 SmtUtils]: Spent 1.91 s on a formula simplification that was a NOOP. DAG size: 536 [2020-10-27 05:40:13,261 WARN L193 SmtUtils]: Spent 1.97 s on a formula simplification that was a NOOP. DAG size: 540 [2020-10-27 05:40:14,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:40:14,243 INFO L93 Difference]: Finished difference Result 3707 states and 5172 transitions. [2020-10-27 05:40:14,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-27 05:40:14,244 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 60 [2020-10-27 05:40:14,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:40:14,257 INFO L225 Difference]: With dead ends: 3707 [2020-10-27 05:40:14,257 INFO L226 Difference]: Without dead ends: 3125 [2020-10-27 05:40:14,260 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 10.3s TimeCoverageRelationStatistics Valid=174, Invalid=476, Unknown=0, NotChecked=0, Total=650 [2020-10-27 05:40:14,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3125 states. [2020-10-27 05:40:14,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3125 to 2062. [2020-10-27 05:40:14,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2062 states. [2020-10-27 05:40:14,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2062 states to 2062 states and 2716 transitions. [2020-10-27 05:40:14,424 INFO L78 Accepts]: Start accepts. Automaton has 2062 states and 2716 transitions. Word has length 60 [2020-10-27 05:40:14,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:40:14,424 INFO L481 AbstractCegarLoop]: Abstraction has 2062 states and 2716 transitions. [2020-10-27 05:40:14,425 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 05:40:14,425 INFO L276 IsEmpty]: Start isEmpty. Operand 2062 states and 2716 transitions. [2020-10-27 05:40:14,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-27 05:40:14,428 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:40:14,428 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] [2020-10-27 05:40:14,428 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 05:40:14,428 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:40:14,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:40:14,429 INFO L82 PathProgramCache]: Analyzing trace with hash 949159653, now seen corresponding path program 1 times [2020-10-27 05:40:14,429 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:40:14,430 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1437643224] [2020-10-27 05:40:14,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:40:14,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:40:14,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:40:14,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:40:14,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:40:15,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:40:15,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:40:16,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:40:16,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:40:16,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:40:17,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:40:17,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:40:18,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:40:19,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:40:19,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-27 05:40:19,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-27 05:40:19,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-27 05:40:19,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:40:19,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 05:40:19,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:40:19,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-27 05:40:19,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:40:21,847 WARN L193 SmtUtils]: Spent 1.81 s on a formula simplification that was a NOOP. DAG size: 529 [2020-10-27 05:40:21,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:40:21,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:40:21,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:40:21,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:40:21,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:40:21,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:40:21,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-27 05:40:21,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:40:21,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:40:21,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:40:21,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:40:21,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:40:21,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:40:21,988 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1437643224] [2020-10-27 05:40:21,988 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:40:21,988 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-10-27 05:40:21,988 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737283798] [2020-10-27 05:40:21,989 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-27 05:40:21,989 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:40:21,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-27 05:40:21,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2020-10-27 05:40:21,990 INFO L87 Difference]: Start difference. First operand 2062 states and 2716 transitions. Second operand 17 states. [2020-10-27 05:40:22,141 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 41 [2020-10-27 05:40:26,486 WARN L193 SmtUtils]: Spent 4.24 s on a formula simplification. DAG size of input: 559 DAG size of output: 557 [2020-10-27 05:40:35,284 WARN L193 SmtUtils]: Spent 2.03 s on a formula simplification that was a NOOP. DAG size: 540 [2020-10-27 05:40:37,351 WARN L193 SmtUtils]: Spent 1.99 s on a formula simplification that was a NOOP. DAG size: 539 [2020-10-27 05:40:39,419 WARN L193 SmtUtils]: Spent 1.95 s on a formula simplification that was a NOOP. DAG size: 537 [2020-10-27 05:40:43,839 WARN L193 SmtUtils]: Spent 3.92 s on a formula simplification. DAG size of input: 542 DAG size of output: 541 [2020-10-27 05:40:49,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:40:49,816 INFO L93 Difference]: Finished difference Result 3413 states and 4735 transitions. [2020-10-27 05:40:49,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-27 05:40:49,817 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 60 [2020-10-27 05:40:49,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:40:49,831 INFO L225 Difference]: With dead ends: 3413 [2020-10-27 05:40:49,831 INFO L226 Difference]: Without dead ends: 2858 [2020-10-27 05:40:49,833 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 326 ImplicationChecksByTransitivity, 17.7s TimeCoverageRelationStatistics Valid=320, Invalid=1240, Unknown=0, NotChecked=0, Total=1560 [2020-10-27 05:40:49,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2858 states. [2020-10-27 05:40:50,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2858 to 2073. [2020-10-27 05:40:50,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2073 states. [2020-10-27 05:40:50,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2073 states to 2073 states and 2733 transitions. [2020-10-27 05:40:50,012 INFO L78 Accepts]: Start accepts. Automaton has 2073 states and 2733 transitions. Word has length 60 [2020-10-27 05:40:50,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:40:50,013 INFO L481 AbstractCegarLoop]: Abstraction has 2073 states and 2733 transitions. [2020-10-27 05:40:50,013 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-27 05:40:50,013 INFO L276 IsEmpty]: Start isEmpty. Operand 2073 states and 2733 transitions. [2020-10-27 05:40:50,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-27 05:40:50,016 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:40:50,017 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] [2020-10-27 05:40:50,017 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 05:40:50,017 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:40:50,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:40:50,018 INFO L82 PathProgramCache]: Analyzing trace with hash -1583634322, now seen corresponding path program 1 times [2020-10-27 05:40:50,018 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:40:50,018 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1155273644] [2020-10-27 05:40:50,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:40:50,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:40:50,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:40:50,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:40:50,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:40:50,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:40:51,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:40:55,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:40:55,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-27 05:40:55,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 05:40:55,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-27 05:40:55,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:40:55,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 05:40:55,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:40:55,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-27 05:40:55,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:40:57,166 WARN L193 SmtUtils]: Spent 1.89 s on a formula simplification that was a NOOP. DAG size: 529 [2020-10-27 05:40:57,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:40:57,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:40:57,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:40:57,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:40:57,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:40:57,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:40:57,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 05:40:57,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:40:57,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:40:57,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:40:57,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:40:57,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:40:57,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:40:57,241 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1155273644] [2020-10-27 05:40:57,241 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:40:57,242 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-27 05:40:57,242 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918549819] [2020-10-27 05:40:57,242 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 05:40:57,242 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:40:57,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 05:40:57,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-27 05:40:57,243 INFO L87 Difference]: Start difference. First operand 2073 states and 2733 transitions. Second operand 8 states. [2020-10-27 05:40:59,268 WARN L193 SmtUtils]: Spent 1.91 s on a formula simplification that was a NOOP. DAG size: 539 [2020-10-27 05:41:03,500 WARN L193 SmtUtils]: Spent 1.88 s on a formula simplification that was a NOOP. DAG size: 541 [2020-10-27 05:41:06,961 WARN L193 SmtUtils]: Spent 1.79 s on a formula simplification that was a NOOP. DAG size: 538 [2020-10-27 05:41:07,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:41:07,833 INFO L93 Difference]: Finished difference Result 5174 states and 7352 transitions. [2020-10-27 05:41:07,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 05:41:07,833 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 61 [2020-10-27 05:41:07,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:41:07,847 INFO L225 Difference]: With dead ends: 5174 [2020-10-27 05:41:07,847 INFO L226 Difference]: Without dead ends: 3888 [2020-10-27 05:41:07,851 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2020-10-27 05:41:07,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3888 states. [2020-10-27 05:41:08,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3888 to 2095. [2020-10-27 05:41:08,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2095 states. [2020-10-27 05:41:08,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2095 states to 2095 states and 2848 transitions. [2020-10-27 05:41:08,064 INFO L78 Accepts]: Start accepts. Automaton has 2095 states and 2848 transitions. Word has length 61 [2020-10-27 05:41:08,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:41:08,064 INFO L481 AbstractCegarLoop]: Abstraction has 2095 states and 2848 transitions. [2020-10-27 05:41:08,064 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 05:41:08,064 INFO L276 IsEmpty]: Start isEmpty. Operand 2095 states and 2848 transitions. [2020-10-27 05:41:08,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-27 05:41:08,066 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:41:08,067 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] [2020-10-27 05:41:08,067 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 05:41:08,067 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:41:08,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:41:08,068 INFO L82 PathProgramCache]: Analyzing trace with hash 648054551, now seen corresponding path program 1 times [2020-10-27 05:41:08,068 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:41:08,068 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1080458232] [2020-10-27 05:41:08,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:41:08,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:41:08,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:41:08,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:41:08,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:41:09,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:41:09,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:41:13,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:41:13,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-27 05:41:13,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 05:41:13,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-27 05:41:13,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:41:13,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 05:41:13,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:41:13,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-27 05:41:13,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:41:15,174 WARN L193 SmtUtils]: Spent 1.88 s on a formula simplification that was a NOOP. DAG size: 529 [2020-10-27 05:41:15,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:41:15,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:41:15,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:41:15,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:41:15,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:41:15,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:41:15,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 05:41:15,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:41:15,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:41:15,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:41:15,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:41:15,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:41:15,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:41:15,226 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1080458232] [2020-10-27 05:41:15,226 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:41:15,226 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 05:41:15,226 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619430122] [2020-10-27 05:41:15,227 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 05:41:15,227 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:41:15,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 05:41:15,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-27 05:41:15,227 INFO L87 Difference]: Start difference. First operand 2095 states and 2848 transitions. Second operand 9 states. [2020-10-27 05:41:17,112 WARN L193 SmtUtils]: Spent 1.80 s on a formula simplification that was a NOOP. DAG size: 536 [2020-10-27 05:41:22,870 WARN L193 SmtUtils]: Spent 1.82 s on a formula simplification that was a NOOP. DAG size: 538