/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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=0.2 --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 -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.2.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-15 02:55:13,189 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 02:55:13,191 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 02:55:13,224 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 02:55:13,225 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 02:55:13,226 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 02:55:13,228 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 02:55:13,236 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 02:55:13,237 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 02:55:13,238 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 02:55:13,240 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 02:55:13,242 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 02:55:13,242 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 02:55:13,243 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 02:55:13,246 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 02:55:13,248 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 02:55:13,248 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 02:55:13,253 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 02:55:13,255 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 02:55:13,261 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 02:55:13,263 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 02:55:13,267 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 02:55:13,268 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 02:55:13,269 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 02:55:13,274 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 02:55:13,274 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 02:55:13,274 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 02:55:13,277 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 02:55:13,278 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 02:55:13,279 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 02:55:13,279 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 02:55:13,279 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 02:55:13,280 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 02:55:13,281 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 02:55:13,283 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 02:55:13,283 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 02:55:13,283 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 02:55:13,284 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 02:55:13,284 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 02:55:13,294 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 02:55:13,298 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 02:55:13,299 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 [2020-10-15 02:55:13,339 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 02:55:13,339 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 02:55:13,342 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 02:55:13,342 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 02:55:13,342 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 02:55:13,342 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 02:55:13,343 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 02:55:13,343 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 02:55:13,343 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 02:55:13,343 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 02:55:13,344 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 02:55:13,344 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 02:55:13,345 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 02:55:13,345 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 02:55:13,346 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 02:55:13,346 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 02:55:13,346 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 02:55:13,346 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 02:55:13,347 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 02:55:13,347 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 02:55:13,347 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 02:55:13,347 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 02:55:13,347 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 02:55:13,348 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 02:55:13,348 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 02:55:13,348 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 02:55:13,348 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 02:55:13,348 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 02:55:13,348 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 02:55:13,349 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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=0.2;log-additional-information=true;unknown-allowed=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=0.2;log-additional-information=true;unknown-allowed=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=0.2;log-additional-information=true;unknown-allowed=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=0.2;log-additional-information=true;unknown-allowed=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=0.2;log-additional-information=true;unknown-allowed=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=0.2;log-additional-information=true;unknown-allowed=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=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-15 02:55:13,662 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 02:55:13,680 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 02:55:13,684 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 02:55:13,686 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 02:55:13,687 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 02:55:13,687 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.2.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-10-15 02:55:13,754 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1e052669b/f43f0e22f7984a27b4648260d1a1f6ee/FLAG9b1ee0682 [2020-10-15 02:55:14,331 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 02:55:14,331 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.2.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-10-15 02:55:14,347 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1e052669b/f43f0e22f7984a27b4648260d1a1f6ee/FLAG9b1ee0682 [2020-10-15 02:55:14,554 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1e052669b/f43f0e22f7984a27b4648260d1a1f6ee [2020-10-15 02:55:14,564 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 02:55:14,566 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-15 02:55:14,568 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 02:55:14,568 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 02:55:14,572 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 02:55:14,573 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 02:55:14" (1/1) ... [2020-10-15 02:55:14,576 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@752aa8e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:55:14, skipping insertion in model container [2020-10-15 02:55:14,576 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 02:55:14" (1/1) ... [2020-10-15 02:55:14,584 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 02:55:14,667 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 02:55:15,035 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 02:55:15,049 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 02:55:15,288 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 02:55:15,309 INFO L208 MainTranslator]: Completed translation [2020-10-15 02:55:15,309 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:55:15 WrapperNode [2020-10-15 02:55:15,310 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 02:55:15,311 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 02:55:15,311 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 02:55:15,311 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 02:55:15,322 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:55:15" (1/1) ... [2020-10-15 02:55:15,322 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:55:15" (1/1) ... [2020-10-15 02:55:15,337 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:55:15" (1/1) ... [2020-10-15 02:55:15,338 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:55:15" (1/1) ... [2020-10-15 02:55:15,361 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:55:15" (1/1) ... [2020-10-15 02:55:15,380 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:55:15" (1/1) ... [2020-10-15 02:55:15,386 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:55:15" (1/1) ... [2020-10-15 02:55:15,393 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 02:55:15,394 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 02:55:15,394 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 02:55:15,394 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 02:55:15,395 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:55:15" (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 [2020-10-15 02:55:15,486 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-15 02:55:15,487 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 02:55:15,487 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-15 02:55:15,487 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-15 02:55:15,487 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-15 02:55:15,488 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-15 02:55:15,488 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-15 02:55:15,489 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-15 02:55:15,489 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-15 02:55:15,489 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-15 02:55:15,489 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-15 02:55:15,489 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-15 02:55:15,490 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-15 02:55:15,490 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-15 02:55:15,490 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-15 02:55:15,491 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-15 02:55:15,491 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-15 02:55:15,491 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-15 02:55:15,492 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-15 02:55:15,492 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 02:55:16,667 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 02:55:16,668 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-15 02:55:16,674 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 02:55:16 BoogieIcfgContainer [2020-10-15 02:55:16,674 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 02:55:16,675 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 02:55:16,675 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 02:55:16,679 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 02:55:16,679 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 02:55:14" (1/3) ... [2020-10-15 02:55:16,680 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@680f3479 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 02:55:16, skipping insertion in model container [2020-10-15 02:55:16,680 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:55:15" (2/3) ... [2020-10-15 02:55:16,680 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@680f3479 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 02:55:16, skipping insertion in model container [2020-10-15 02:55:16,681 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 02:55:16" (3/3) ... [2020-10-15 02:55:16,683 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.2.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-10-15 02:55:16,694 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-15 02:55:16,703 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-10-15 02:55:16,717 INFO L251 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-10-15 02:55:16,745 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-15 02:55:16,745 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-15 02:55:16,745 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-15 02:55:16,745 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 02:55:16,746 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 02:55:16,746 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-15 02:55:16,746 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 02:55:16,746 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 02:55:16,770 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states. [2020-10-15 02:55:16,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-15 02:55:16,783 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:55:16,784 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] [2020-10-15 02:55:16,785 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:55:16,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:55:16,792 INFO L82 PathProgramCache]: Analyzing trace with hash -92105209, now seen corresponding path program 1 times [2020-10-15 02:55:16,801 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:55:16,801 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [541691925] [2020-10-15 02:55:16,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:55:17,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:55:17,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:17,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:17,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:17,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:18,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:18,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:18,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:22,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:55:22,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-15 02:55:22,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 02:55:22,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5041 [2020-10-15 02:55:22,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:55:22,373 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:55:22,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 02:55:22,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 02:55:22,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-15 02:55:22,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 11 [2020-10-15 02:55:22,823 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-15 02:55:22,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:55:22,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:55:22,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:22,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:55:22,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:55:22,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:55:22,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-15 02:55:22,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:55:22,859 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:55:22,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:55:22,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:55:22,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:55:22,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:55:22,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 02:55:22,916 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [541691925] [2020-10-15 02:55:22,919 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 02:55:22,919 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 02:55:22,920 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126458033] [2020-10-15 02:55:22,927 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 02:55:22,928 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:55:22,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 02:55:22,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 02:55:22,945 INFO L87 Difference]: Start difference. First operand 242 states. Second operand 5 states. [2020-10-15 02:55:25,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:55:25,367 INFO L93 Difference]: Finished difference Result 692 states and 1230 transitions. [2020-10-15 02:55:25,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 02:55:25,369 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 95 [2020-10-15 02:55:25,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:55:25,389 INFO L225 Difference]: With dead ends: 692 [2020-10-15 02:55:25,390 INFO L226 Difference]: Without dead ends: 455 [2020-10-15 02:55:25,396 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 02:55:25,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 455 states. [2020-10-15 02:55:25,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 455 to 435. [2020-10-15 02:55:25,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 435 states. [2020-10-15 02:55:25,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 633 transitions. [2020-10-15 02:55:25,492 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 633 transitions. Word has length 95 [2020-10-15 02:55:25,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:55:25,493 INFO L479 AbstractCegarLoop]: Abstraction has 435 states and 633 transitions. [2020-10-15 02:55:25,493 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 02:55:25,493 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 633 transitions. [2020-10-15 02:55:25,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-15 02:55:25,498 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:55:25,499 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] [2020-10-15 02:55:25,499 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 02:55:25,499 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:55:25,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:55:25,500 INFO L82 PathProgramCache]: Analyzing trace with hash -657589097, now seen corresponding path program 1 times [2020-10-15 02:55:25,500 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:55:25,500 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [211930434] [2020-10-15 02:55:25,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:55:25,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:55:25,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:25,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:25,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:25,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:25,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:25,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:26,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:30,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:55:30,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-15 02:55:30,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 02:55:30,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-15 02:55:30,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:55:30,560 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:55:30,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 02:55:30,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 02:55:30,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-15 02:55:30,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:55:30,837 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-15 02:55:30,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:55:30,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:55:30,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:30,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:55:30,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:55:30,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:55:30,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 02:55:30,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:55:30,853 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:55:30,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:55:30,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:55:30,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:55:30,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:55:30,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 02:55:30,887 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [211930434] [2020-10-15 02:55:30,887 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 02:55:30,887 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 02:55:30,888 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762146343] [2020-10-15 02:55:30,890 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 02:55:30,890 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:55:30,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 02:55:30,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 02:55:30,891 INFO L87 Difference]: Start difference. First operand 435 states and 633 transitions. Second operand 5 states. [2020-10-15 02:55:32,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:55:32,613 INFO L93 Difference]: Finished difference Result 1227 states and 1775 transitions. [2020-10-15 02:55:32,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 02:55:32,614 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 96 [2020-10-15 02:55:32,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:55:32,620 INFO L225 Difference]: With dead ends: 1227 [2020-10-15 02:55:32,621 INFO L226 Difference]: Without dead ends: 824 [2020-10-15 02:55:32,625 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 02:55:32,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 824 states. [2020-10-15 02:55:32,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 824 to 799. [2020-10-15 02:55:32,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 799 states. [2020-10-15 02:55:32,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 799 states to 799 states and 1150 transitions. [2020-10-15 02:55:32,687 INFO L78 Accepts]: Start accepts. Automaton has 799 states and 1150 transitions. Word has length 96 [2020-10-15 02:55:32,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:55:32,687 INFO L479 AbstractCegarLoop]: Abstraction has 799 states and 1150 transitions. [2020-10-15 02:55:32,687 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 02:55:32,687 INFO L276 IsEmpty]: Start isEmpty. Operand 799 states and 1150 transitions. [2020-10-15 02:55:32,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-15 02:55:32,691 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:55:32,691 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] [2020-10-15 02:55:32,692 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 02:55:32,692 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:55:32,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:55:32,692 INFO L82 PathProgramCache]: Analyzing trace with hash -1300649467, now seen corresponding path program 1 times [2020-10-15 02:55:32,693 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:55:32,693 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1083100079] [2020-10-15 02:55:32,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:55:32,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:55:32,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:32,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:32,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:32,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:32,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:32,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:34,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:36,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:36,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:36,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:37,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:37,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:55:37,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-15 02:55:37,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-15 02:55:37,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-15 02:55:37,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:55:37,736 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:55:37,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 02:55:37,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 02:55:37,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-15 02:55:37,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:55:38,001 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-15 02:55:38,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:55:38,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:55:38,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:38,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:55:38,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:55:38,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:55:38,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 02:55:38,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:55:38,018 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:55:38,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:55:38,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:55:38,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:55:38,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:55:38,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 02:55:38,051 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1083100079] [2020-10-15 02:55:38,052 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 02:55:38,052 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 02:55:38,052 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567453724] [2020-10-15 02:55:38,053 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 02:55:38,053 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:55:38,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 02:55:38,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 02:55:38,054 INFO L87 Difference]: Start difference. First operand 799 states and 1150 transitions. Second operand 5 states. [2020-10-15 02:55:39,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:55:39,799 INFO L93 Difference]: Finished difference Result 2269 states and 3250 transitions. [2020-10-15 02:55:39,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 02:55:39,804 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 97 [2020-10-15 02:55:39,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:55:39,815 INFO L225 Difference]: With dead ends: 2269 [2020-10-15 02:55:39,815 INFO L226 Difference]: Without dead ends: 1516 [2020-10-15 02:55:39,819 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 02:55:39,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1516 states. [2020-10-15 02:55:39,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1516 to 1491. [2020-10-15 02:55:39,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1491 states. [2020-10-15 02:55:39,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1491 states to 1491 states and 2116 transitions. [2020-10-15 02:55:39,912 INFO L78 Accepts]: Start accepts. Automaton has 1491 states and 2116 transitions. Word has length 97 [2020-10-15 02:55:39,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:55:39,912 INFO L479 AbstractCegarLoop]: Abstraction has 1491 states and 2116 transitions. [2020-10-15 02:55:39,913 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 02:55:39,913 INFO L276 IsEmpty]: Start isEmpty. Operand 1491 states and 2116 transitions. [2020-10-15 02:55:39,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-15 02:55:39,917 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:55:39,917 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] [2020-10-15 02:55:39,918 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 02:55:39,918 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:55:39,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:55:39,918 INFO L82 PathProgramCache]: Analyzing trace with hash 1907645269, now seen corresponding path program 1 times [2020-10-15 02:55:39,919 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:55:39,919 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [169224937] [2020-10-15 02:55:39,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:55:39,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:55:39,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:39,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:40,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:40,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:40,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:40,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:40,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:41,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:43,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:43,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:43,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:44,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:55:44,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-15 02:55:44,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-15 02:55:44,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-15 02:55:44,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:55:44,955 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:55:44,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 02:55:44,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 02:55:44,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-15 02:55:44,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:55:45,241 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-15 02:55:45,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:55:45,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:55:45,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:45,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:55:45,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:55:45,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:55:45,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-15 02:55:45,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:55:45,264 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:55:45,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:55:45,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:55:45,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:55:45,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-15 02:55:45,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 02:55:45,326 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [169224937] [2020-10-15 02:55:45,327 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 02:55:45,327 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 02:55:45,328 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013510004] [2020-10-15 02:55:45,330 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 02:55:45,331 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:55:45,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 02:55:45,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 02:55:45,332 INFO L87 Difference]: Start difference. First operand 1491 states and 2116 transitions. Second operand 5 states. [2020-10-15 02:55:47,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:55:47,393 INFO L93 Difference]: Finished difference Result 4364 states and 6179 transitions. [2020-10-15 02:55:47,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 02:55:47,394 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 98 [2020-10-15 02:55:47,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:55:47,413 INFO L225 Difference]: With dead ends: 4364 [2020-10-15 02:55:47,413 INFO L226 Difference]: Without dead ends: 2887 [2020-10-15 02:55:47,419 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 02:55:47,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2887 states. [2020-10-15 02:55:47,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2887 to 2873. [2020-10-15 02:55:47,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2873 states. [2020-10-15 02:55:47,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2873 states to 2873 states and 4030 transitions. [2020-10-15 02:55:47,615 INFO L78 Accepts]: Start accepts. Automaton has 2873 states and 4030 transitions. Word has length 98 [2020-10-15 02:55:47,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:55:47,616 INFO L479 AbstractCegarLoop]: Abstraction has 2873 states and 4030 transitions. [2020-10-15 02:55:47,616 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 02:55:47,616 INFO L276 IsEmpty]: Start isEmpty. Operand 2873 states and 4030 transitions. [2020-10-15 02:55:47,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-15 02:55:47,623 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:55:47,624 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] [2020-10-15 02:55:47,624 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 02:55:47,624 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:55:47,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:55:47,625 INFO L82 PathProgramCache]: Analyzing trace with hash -1942214108, now seen corresponding path program 1 times [2020-10-15 02:55:47,625 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:55:47,626 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [945759954] [2020-10-15 02:55:47,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:55:47,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:55:47,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:47,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:47,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:47,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:47,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:47,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:50,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:52,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:52,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:55:52,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-15 02:55:52,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 02:55:52,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-15 02:55:52,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:55:52,657 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:55:52,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 02:55:52,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 02:55:52,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-15 02:55:52,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:55:52,973 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-15 02:55:52,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:55:52,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:55:52,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:52,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:55:52,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:55:52,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:55:52,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-15 02:55:52,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:55:52,994 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:55:52,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:55:52,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:55:52,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:55:52,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:55:53,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 02:55:53,040 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [945759954] [2020-10-15 02:55:53,040 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 02:55:53,040 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 02:55:53,040 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974620377] [2020-10-15 02:55:53,041 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 02:55:53,041 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:55:53,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 02:55:53,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 02:55:53,042 INFO L87 Difference]: Start difference. First operand 2873 states and 4030 transitions. Second operand 5 states. [2020-10-15 02:55:55,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:55:55,127 INFO L93 Difference]: Finished difference Result 7198 states and 10231 transitions. [2020-10-15 02:55:55,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 02:55:55,128 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 99 [2020-10-15 02:55:55,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:55:55,155 INFO L225 Difference]: With dead ends: 7198 [2020-10-15 02:55:55,155 INFO L226 Difference]: Without dead ends: 5467 [2020-10-15 02:55:55,160 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 02:55:55,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5467 states. [2020-10-15 02:55:55,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5467 to 5446. [2020-10-15 02:55:55,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5446 states. [2020-10-15 02:55:55,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5446 states to 5446 states and 7537 transitions. [2020-10-15 02:55:55,493 INFO L78 Accepts]: Start accepts. Automaton has 5446 states and 7537 transitions. Word has length 99 [2020-10-15 02:55:55,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:55:55,494 INFO L479 AbstractCegarLoop]: Abstraction has 5446 states and 7537 transitions. [2020-10-15 02:55:55,494 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 02:55:55,494 INFO L276 IsEmpty]: Start isEmpty. Operand 5446 states and 7537 transitions. [2020-10-15 02:55:55,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-15 02:55:55,505 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:55:55,505 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] [2020-10-15 02:55:55,506 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 02:55:55,506 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:55:55,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:55:55,506 INFO L82 PathProgramCache]: Analyzing trace with hash -1403127499, now seen corresponding path program 1 times [2020-10-15 02:55:55,507 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:55:55,507 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [442044467] [2020-10-15 02:55:55,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:55:55,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:55:55,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:55,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:55,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:55,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:55,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:55,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:00,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:00,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:56:00,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-15 02:56:00,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 02:56:00,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-15 02:56:00,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:56:00,538 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:56:00,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 02:56:00,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 02:56:00,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-15 02:56:00,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:56:00,840 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-15 02:56:00,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:56:00,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:56:00,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:00,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:56:00,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:56:00,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:56:00,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-15 02:56:00,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:56:00,858 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:56:00,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:56:00,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:56:00,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:56:00,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:56:00,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 02:56:00,905 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [442044467] [2020-10-15 02:56:00,906 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 02:56:00,907 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 02:56:00,907 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543942724] [2020-10-15 02:56:00,908 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 02:56:00,909 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:56:00,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 02:56:00,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 02:56:00,911 INFO L87 Difference]: Start difference. First operand 5446 states and 7537 transitions. Second operand 5 states. [2020-10-15 02:56:03,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:56:03,257 INFO L93 Difference]: Finished difference Result 14113 states and 19792 transitions. [2020-10-15 02:56:03,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 02:56:03,258 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 100 [2020-10-15 02:56:03,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:56:03,303 INFO L225 Difference]: With dead ends: 14113 [2020-10-15 02:56:03,304 INFO L226 Difference]: Without dead ends: 10482 [2020-10-15 02:56:03,315 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 02:56:03,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10482 states. [2020-10-15 02:56:04,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10482 to 10470. [2020-10-15 02:56:04,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10470 states. [2020-10-15 02:56:04,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10470 states to 10470 states and 14296 transitions. [2020-10-15 02:56:04,061 INFO L78 Accepts]: Start accepts. Automaton has 10470 states and 14296 transitions. Word has length 100 [2020-10-15 02:56:04,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:56:04,062 INFO L479 AbstractCegarLoop]: Abstraction has 10470 states and 14296 transitions. [2020-10-15 02:56:04,062 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 02:56:04,062 INFO L276 IsEmpty]: Start isEmpty. Operand 10470 states and 14296 transitions. [2020-10-15 02:56:04,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-15 02:56:04,079 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:56:04,079 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] [2020-10-15 02:56:04,080 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 02:56:04,080 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:56:04,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:56:04,080 INFO L82 PathProgramCache]: Analyzing trace with hash 136798180, now seen corresponding path program 1 times [2020-10-15 02:56:04,080 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:56:04,081 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1716784093] [2020-10-15 02:56:04,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:56:04,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:56:04,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:04,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:04,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:04,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:04,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:04,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:09,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:56:09,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-15 02:56:09,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 02:56:09,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-15 02:56:09,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:56:09,117 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:56:09,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 02:56:09,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-15 02:56:09,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-15 02:56:09,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:56:09,343 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-15 02:56:09,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:56:09,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:56:09,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:09,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:56:09,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:56:09,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:56:09,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 02:56:09,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:56:09,356 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:56:09,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:56:09,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:56:09,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:56:09,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:56:09,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 02:56:09,384 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1716784093] [2020-10-15 02:56:09,385 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 02:56:09,385 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 02:56:09,385 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236514772] [2020-10-15 02:56:09,386 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 02:56:09,386 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:56:09,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 02:56:09,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 02:56:09,386 INFO L87 Difference]: Start difference. First operand 10470 states and 14296 transitions. Second operand 5 states. [2020-10-15 02:56:10,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:56:10,660 INFO L93 Difference]: Finished difference Result 16989 states and 23192 transitions. [2020-10-15 02:56:10,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 02:56:10,661 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 101 [2020-10-15 02:56:10,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:56:10,688 INFO L225 Difference]: With dead ends: 16989 [2020-10-15 02:56:10,689 INFO L226 Difference]: Without dead ends: 6763 [2020-10-15 02:56:10,708 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 02:56:10,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6763 states. [2020-10-15 02:56:11,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6763 to 6763. [2020-10-15 02:56:11,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6763 states. [2020-10-15 02:56:11,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6763 states to 6763 states and 9190 transitions. [2020-10-15 02:56:11,168 INFO L78 Accepts]: Start accepts. Automaton has 6763 states and 9190 transitions. Word has length 101 [2020-10-15 02:56:11,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:56:11,168 INFO L479 AbstractCegarLoop]: Abstraction has 6763 states and 9190 transitions. [2020-10-15 02:56:11,169 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 02:56:11,169 INFO L276 IsEmpty]: Start isEmpty. Operand 6763 states and 9190 transitions. [2020-10-15 02:56:11,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-15 02:56:11,179 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:56:11,179 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:56:11,180 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 02:56:11,180 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:56:11,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:56:11,180 INFO L82 PathProgramCache]: Analyzing trace with hash -1875252746, now seen corresponding path program 1 times [2020-10-15 02:56:11,181 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:56:11,181 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1759547719] [2020-10-15 02:56:11,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:56:11,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:56:11,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:11,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:11,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:11,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:11,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:11,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:15,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:16,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:56:16,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-15 02:56:16,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 02:56:16,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-15 02:56:16,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:56:16,211 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:56:16,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 02:56:16,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 02:56:16,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-15 02:56:16,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:56:16,491 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-15 02:56:16,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:56:16,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:56:16,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:16,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:56:16,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:56:16,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:56:16,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-15 02:56:16,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:56:16,516 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:56:16,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 02:56:16,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:56:16,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 02:56:16,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:56:16,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 02:56:16,571 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1759547719] [2020-10-15 02:56:16,571 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 02:56:16,572 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 02:56:16,572 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176779479] [2020-10-15 02:56:16,572 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 02:56:16,573 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:56:16,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 02:56:16,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-15 02:56:16,573 INFO L87 Difference]: Start difference. First operand 6763 states and 9190 transitions. Second operand 6 states. [2020-10-15 02:56:16,780 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-15 02:56:18,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:56:18,512 INFO L93 Difference]: Finished difference Result 15334 states and 21746 transitions. [2020-10-15 02:56:18,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 02:56:18,513 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 105 [2020-10-15 02:56:18,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:56:18,538 INFO L225 Difference]: With dead ends: 15334 [2020-10-15 02:56:18,539 INFO L226 Difference]: Without dead ends: 11725 [2020-10-15 02:56:18,547 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-15 02:56:18,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11725 states. [2020-10-15 02:56:19,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11725 to 11723. [2020-10-15 02:56:19,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11723 states. [2020-10-15 02:56:19,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11723 states to 11723 states and 16118 transitions. [2020-10-15 02:56:19,205 INFO L78 Accepts]: Start accepts. Automaton has 11723 states and 16118 transitions. Word has length 105 [2020-10-15 02:56:19,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:56:19,206 INFO L479 AbstractCegarLoop]: Abstraction has 11723 states and 16118 transitions. [2020-10-15 02:56:19,206 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 02:56:19,206 INFO L276 IsEmpty]: Start isEmpty. Operand 11723 states and 16118 transitions. [2020-10-15 02:56:19,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-15 02:56:19,219 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:56:19,219 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:56:19,219 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 02:56:19,219 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:56:19,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:56:19,220 INFO L82 PathProgramCache]: Analyzing trace with hash 408365873, now seen corresponding path program 1 times [2020-10-15 02:56:19,220 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:56:19,220 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [54348530] [2020-10-15 02:56:19,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:56:19,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:56:19,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:19,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:19,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:19,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:19,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:24,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:56:24,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-15 02:56:24,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 02:56:24,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-15 02:56:24,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:56:24,257 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:56:24,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 02:56:24,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-15 02:56:24,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-15 02:56:24,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:56:24,486 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-15 02:56:24,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:56:24,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:56:24,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:24,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:56:24,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:56:24,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:56:24,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 02:56:24,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:56:24,497 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:56:24,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:56:24,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:56:24,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:56:24,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:56:24,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 02:56:24,520 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [54348530] [2020-10-15 02:56:24,521 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 02:56:24,521 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 02:56:24,521 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265953466] [2020-10-15 02:56:24,521 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 02:56:24,522 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:56:24,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 02:56:24,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 02:56:24,522 INFO L87 Difference]: Start difference. First operand 11723 states and 16118 transitions. Second operand 5 states. [2020-10-15 02:56:25,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:56:25,943 INFO L93 Difference]: Finished difference Result 19340 states and 26586 transitions. [2020-10-15 02:56:25,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 02:56:25,944 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 105 [2020-10-15 02:56:25,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:56:25,963 INFO L225 Difference]: With dead ends: 19340 [2020-10-15 02:56:25,964 INFO L226 Difference]: Without dead ends: 7899 [2020-10-15 02:56:25,982 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 02:56:25,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7899 states. [2020-10-15 02:56:26,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7899 to 7889. [2020-10-15 02:56:26,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7889 states. [2020-10-15 02:56:26,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7889 states to 7889 states and 10791 transitions. [2020-10-15 02:56:26,439 INFO L78 Accepts]: Start accepts. Automaton has 7889 states and 10791 transitions. Word has length 105 [2020-10-15 02:56:26,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:56:26,440 INFO L479 AbstractCegarLoop]: Abstraction has 7889 states and 10791 transitions. [2020-10-15 02:56:26,440 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 02:56:26,440 INFO L276 IsEmpty]: Start isEmpty. Operand 7889 states and 10791 transitions. [2020-10-15 02:56:26,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-15 02:56:26,448 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:56:26,448 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] [2020-10-15 02:56:26,449 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-15 02:56:26,449 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:56:26,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:56:26,449 INFO L82 PathProgramCache]: Analyzing trace with hash -2026328912, now seen corresponding path program 1 times [2020-10-15 02:56:26,450 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:56:26,450 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [838963633] [2020-10-15 02:56:26,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:56:26,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:56:26,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:26,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:26,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:26,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:26,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:26,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:27,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:31,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:56:31,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-15 02:56:31,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 02:56:31,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-15 02:56:31,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:56:31,471 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:56:31,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 02:56:31,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 02:56:31,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-15 02:56:31,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:56:31,720 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-15 02:56:31,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:56:31,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:56:31,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:31,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:56:31,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:56:31,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:56:31,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-15 02:56:31,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:56:31,737 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:56:31,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:56:31,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:56:31,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:56:31,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:56:31,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 02:56:31,763 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [838963633] [2020-10-15 02:56:31,763 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 02:56:31,764 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 02:56:31,764 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091154256] [2020-10-15 02:56:31,764 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 02:56:31,764 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:56:31,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 02:56:31,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 02:56:31,765 INFO L87 Difference]: Start difference. First operand 7889 states and 10791 transitions. Second operand 5 states. [2020-10-15 02:56:31,983 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2020-10-15 02:56:34,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:56:34,241 INFO L93 Difference]: Finished difference Result 13931 states and 19051 transitions. [2020-10-15 02:56:34,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 02:56:34,242 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 108 [2020-10-15 02:56:34,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:56:34,260 INFO L225 Difference]: With dead ends: 13931 [2020-10-15 02:56:34,260 INFO L226 Difference]: Without dead ends: 7889 [2020-10-15 02:56:34,272 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-15 02:56:34,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7889 states. [2020-10-15 02:56:34,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7889 to 7873. [2020-10-15 02:56:34,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7873 states. [2020-10-15 02:56:34,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7873 states to 7873 states and 10713 transitions. [2020-10-15 02:56:34,816 INFO L78 Accepts]: Start accepts. Automaton has 7873 states and 10713 transitions. Word has length 108 [2020-10-15 02:56:34,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:56:34,817 INFO L479 AbstractCegarLoop]: Abstraction has 7873 states and 10713 transitions. [2020-10-15 02:56:34,817 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 02:56:34,817 INFO L276 IsEmpty]: Start isEmpty. Operand 7873 states and 10713 transitions. [2020-10-15 02:56:34,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-15 02:56:34,822 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:56:34,822 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] [2020-10-15 02:56:34,822 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-15 02:56:34,823 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:56:34,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:56:34,823 INFO L82 PathProgramCache]: Analyzing trace with hash -1269384759, now seen corresponding path program 1 times [2020-10-15 02:56:34,823 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:56:34,823 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2025133927] [2020-10-15 02:56:34,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:56:34,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:56:34,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:35,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:35,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:35,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:35,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:36,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:39,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:56:39,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-15 02:56:39,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 02:56:39,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-15 02:56:39,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:56:39,979 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:56:39,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-15 02:56:39,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 02:56:39,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-15 02:56:39,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:56:40,428 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-15 02:56:40,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:56:40,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:56:40,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:40,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:56:40,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:56:40,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:56:40,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-15 02:56:40,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:56:40,447 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:56:40,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 02:56:40,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:56:40,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 02:56:40,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:56:40,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 02:56:40,489 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2025133927] [2020-10-15 02:56:40,489 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 02:56:40,489 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-15 02:56:40,490 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071869850] [2020-10-15 02:56:40,490 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-15 02:56:40,490 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:56:40,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-15 02:56:40,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-10-15 02:56:40,491 INFO L87 Difference]: Start difference. First operand 7873 states and 10713 transitions. Second operand 12 states. [2020-10-15 02:56:41,009 WARN L193 SmtUtils]: Spent 427.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 182 [2020-10-15 02:56:45,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:56:45,885 INFO L93 Difference]: Finished difference Result 24485 states and 35617 transitions. [2020-10-15 02:56:45,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-15 02:56:45,885 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 109 [2020-10-15 02:56:45,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:56:45,915 INFO L225 Difference]: With dead ends: 24485 [2020-10-15 02:56:45,916 INFO L226 Difference]: Without dead ends: 21014 [2020-10-15 02:56:45,927 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=155, Invalid=445, Unknown=0, NotChecked=0, Total=600 [2020-10-15 02:56:45,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21014 states. [2020-10-15 02:56:46,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21014 to 11348. [2020-10-15 02:56:46,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11348 states. [2020-10-15 02:56:46,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11348 states to 11348 states and 15685 transitions. [2020-10-15 02:56:46,984 INFO L78 Accepts]: Start accepts. Automaton has 11348 states and 15685 transitions. Word has length 109 [2020-10-15 02:56:46,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:56:46,985 INFO L479 AbstractCegarLoop]: Abstraction has 11348 states and 15685 transitions. [2020-10-15 02:56:46,985 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-15 02:56:46,985 INFO L276 IsEmpty]: Start isEmpty. Operand 11348 states and 15685 transitions. [2020-10-15 02:56:46,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-15 02:56:46,992 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:56:46,992 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] [2020-10-15 02:56:46,992 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-15 02:56:46,992 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:56:46,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:56:46,993 INFO L82 PathProgramCache]: Analyzing trace with hash -612958794, now seen corresponding path program 1 times [2020-10-15 02:56:46,993 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:56:46,993 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1951546869] [2020-10-15 02:56:46,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:56:47,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:56:47,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:47,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:47,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:47,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:49,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:52,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:56:52,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-15 02:56:52,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 02:56:52,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-15 02:56:52,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:56:52,041 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:56:52,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-15 02:56:52,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 02:56:52,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-15 02:56:52,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:56:52,343 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-15 02:56:52,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:56:52,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:56:52,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:52,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:56:52,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:56:52,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:56:52,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-15 02:56:52,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:56:52,364 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:56:52,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 02:56:52,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:56:52,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 02:56:52,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:56:52,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 02:56:52,390 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1951546869] [2020-10-15 02:56:52,390 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 02:56:52,390 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-15 02:56:52,390 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675638458] [2020-10-15 02:56:52,391 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-15 02:56:52,391 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:56:52,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-15 02:56:52,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-15 02:56:52,392 INFO L87 Difference]: Start difference. First operand 11348 states and 15685 transitions. Second operand 11 states. [2020-10-15 02:56:52,643 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-15 02:56:59,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:56:59,986 INFO L93 Difference]: Finished difference Result 59174 states and 87991 transitions. [2020-10-15 02:56:59,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-15 02:56:59,987 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 109 [2020-10-15 02:56:59,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:57:00,063 INFO L225 Difference]: With dead ends: 59174 [2020-10-15 02:57:00,063 INFO L226 Difference]: Without dead ends: 50401 [2020-10-15 02:57:00,089 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=214, Invalid=542, Unknown=0, NotChecked=0, Total=756 [2020-10-15 02:57:00,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50401 states. [2020-10-15 02:57:02,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50401 to 18337. [2020-10-15 02:57:02,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18337 states. [2020-10-15 02:57:02,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18337 states to 18337 states and 25420 transitions. [2020-10-15 02:57:02,167 INFO L78 Accepts]: Start accepts. Automaton has 18337 states and 25420 transitions. Word has length 109 [2020-10-15 02:57:02,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:57:02,167 INFO L479 AbstractCegarLoop]: Abstraction has 18337 states and 25420 transitions. [2020-10-15 02:57:02,168 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-15 02:57:02,168 INFO L276 IsEmpty]: Start isEmpty. Operand 18337 states and 25420 transitions. [2020-10-15 02:57:02,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-15 02:57:02,177 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:57:02,178 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] [2020-10-15 02:57:02,178 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-15 02:57:02,178 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:57:02,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:57:02,178 INFO L82 PathProgramCache]: Analyzing trace with hash 902489618, now seen corresponding path program 1 times [2020-10-15 02:57:02,179 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:57:02,179 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2131138813] [2020-10-15 02:57:02,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:57:02,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:57:02,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:02,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:02,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:02,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:06,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:57:06,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-15 02:57:06,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 02:57:06,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4088 [2020-10-15 02:57:06,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:57:06,299 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:57:06,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 02:57:06,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 02:57:06,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-15 02:57:06,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:57:06,515 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-15 02:57:06,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:57:06,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:57:06,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:06,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:57:06,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:57:06,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:57:06,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-15 02:57:06,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:57:06,533 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:57:06,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 02:57:06,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:57:06,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 02:57:06,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:57:06,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 02:57:06,555 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2131138813] [2020-10-15 02:57:06,555 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 02:57:06,556 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 02:57:06,556 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797868788] [2020-10-15 02:57:06,556 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 02:57:06,556 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:57:06,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 02:57:06,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 02:57:06,557 INFO L87 Difference]: Start difference. First operand 18337 states and 25420 transitions. Second operand 6 states. [2020-10-15 02:57:06,787 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-15 02:57:09,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:57:09,337 INFO L93 Difference]: Finished difference Result 30973 states and 44078 transitions. [2020-10-15 02:57:09,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 02:57:09,338 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 109 [2020-10-15 02:57:09,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:57:09,359 INFO L225 Difference]: With dead ends: 30973 [2020-10-15 02:57:09,360 INFO L226 Difference]: Without dead ends: 15252 [2020-10-15 02:57:09,383 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-15 02:57:09,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15252 states. [2020-10-15 02:57:10,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15252 to 14904. [2020-10-15 02:57:10,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14904 states. [2020-10-15 02:57:10,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14904 states to 14904 states and 20994 transitions. [2020-10-15 02:57:10,830 INFO L78 Accepts]: Start accepts. Automaton has 14904 states and 20994 transitions. Word has length 109 [2020-10-15 02:57:10,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:57:10,830 INFO L479 AbstractCegarLoop]: Abstraction has 14904 states and 20994 transitions. [2020-10-15 02:57:10,830 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 02:57:10,831 INFO L276 IsEmpty]: Start isEmpty. Operand 14904 states and 20994 transitions. [2020-10-15 02:57:10,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-15 02:57:10,836 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:57:10,836 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] [2020-10-15 02:57:10,836 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-15 02:57:10,837 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:57:10,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:57:10,837 INFO L82 PathProgramCache]: Analyzing trace with hash -1487298482, now seen corresponding path program 1 times [2020-10-15 02:57:10,837 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:57:10,837 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1807075234] [2020-10-15 02:57:10,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:57:10,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:57:10,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:10,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:10,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:12,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:57:12,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-15 02:57:12,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 02:57:12,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1285 [2020-10-15 02:57:12,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:57:12,152 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:57:12,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 02:57:12,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-15 02:57:12,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-15 02:57:12,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:57:12,374 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-15 02:57:12,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:57:12,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:57:12,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:12,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:57:12,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:57:12,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:57:12,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 02:57:12,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:57:12,384 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:57:12,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:57:12,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:57:12,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:57:12,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:57:12,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 02:57:12,399 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1807075234] [2020-10-15 02:57:12,400 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 02:57:12,400 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 02:57:12,400 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971726541] [2020-10-15 02:57:12,400 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 02:57:12,400 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:57:12,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 02:57:12,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 02:57:12,401 INFO L87 Difference]: Start difference. First operand 14904 states and 20994 transitions. Second operand 5 states. [2020-10-15 02:57:14,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:57:14,495 INFO L93 Difference]: Finished difference Result 26586 states and 37400 transitions. [2020-10-15 02:57:14,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 02:57:14,496 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 109 [2020-10-15 02:57:14,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:57:14,509 INFO L225 Difference]: With dead ends: 26586 [2020-10-15 02:57:14,509 INFO L226 Difference]: Without dead ends: 11968 [2020-10-15 02:57:14,526 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 02:57:14,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11968 states. [2020-10-15 02:57:15,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11968 to 11968. [2020-10-15 02:57:15,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11968 states. [2020-10-15 02:57:15,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11968 states to 11968 states and 16729 transitions. [2020-10-15 02:57:15,848 INFO L78 Accepts]: Start accepts. Automaton has 11968 states and 16729 transitions. Word has length 109 [2020-10-15 02:57:15,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:57:15,848 INFO L479 AbstractCegarLoop]: Abstraction has 11968 states and 16729 transitions. [2020-10-15 02:57:15,848 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 02:57:15,848 INFO L276 IsEmpty]: Start isEmpty. Operand 11968 states and 16729 transitions. [2020-10-15 02:57:15,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-15 02:57:15,853 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:57:15,853 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:57:15,853 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-15 02:57:15,853 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:57:15,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:57:15,854 INFO L82 PathProgramCache]: Analyzing trace with hash 1433208652, now seen corresponding path program 1 times [2020-10-15 02:57:15,854 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:57:15,854 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [279045668] [2020-10-15 02:57:15,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:57:15,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:57:15,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:15,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:15,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:15,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:16,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:16,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:20,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:57:20,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-15 02:57:20,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 02:57:20,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-15 02:57:20,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:57:20,875 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:57:20,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-15 02:57:20,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 02:57:20,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-15 02:57:20,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:57:21,242 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-15 02:57:21,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:57:21,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:57:21,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:21,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:57:21,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:57:21,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:57:21,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 02:57:21,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:57:21,254 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:57:21,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:57:21,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:57:21,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:57:21,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:57:21,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 02:57:21,278 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [279045668] [2020-10-15 02:57:21,278 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 02:57:21,279 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-15 02:57:21,279 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131867320] [2020-10-15 02:57:21,279 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-15 02:57:21,279 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:57:21,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-15 02:57:21,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-15 02:57:21,280 INFO L87 Difference]: Start difference. First operand 11968 states and 16729 transitions. Second operand 11 states. [2020-10-15 02:57:21,511 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-15 02:57:30,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:57:30,057 INFO L93 Difference]: Finished difference Result 67536 states and 100152 transitions. [2020-10-15 02:57:30,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-15 02:57:30,057 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 111 [2020-10-15 02:57:30,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:57:30,136 INFO L225 Difference]: With dead ends: 67536 [2020-10-15 02:57:30,136 INFO L226 Difference]: Without dead ends: 59466 [2020-10-15 02:57:30,156 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=114, Invalid=392, Unknown=0, NotChecked=0, Total=506 [2020-10-15 02:57:30,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59466 states. [2020-10-15 02:57:32,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59466 to 12336. [2020-10-15 02:57:32,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12336 states. [2020-10-15 02:57:32,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12336 states to 12336 states and 17005 transitions. [2020-10-15 02:57:32,185 INFO L78 Accepts]: Start accepts. Automaton has 12336 states and 17005 transitions. Word has length 111 [2020-10-15 02:57:32,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:57:32,185 INFO L479 AbstractCegarLoop]: Abstraction has 12336 states and 17005 transitions. [2020-10-15 02:57:32,185 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-15 02:57:32,185 INFO L276 IsEmpty]: Start isEmpty. Operand 12336 states and 17005 transitions. [2020-10-15 02:57:32,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-15 02:57:32,190 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:57:32,191 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:57:32,191 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-15 02:57:32,191 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:57:32,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:57:32,191 INFO L82 PathProgramCache]: Analyzing trace with hash 1057065122, now seen corresponding path program 1 times [2020-10-15 02:57:32,191 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:57:32,191 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [759391700] [2020-10-15 02:57:32,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:57:32,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:57:32,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:32,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:32,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:32,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:37,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:57:37,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-15 02:57:37,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 02:57:37,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-15 02:57:37,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:57:37,218 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:57:37,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-15 02:57:37,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 02:57:37,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-15 02:57:37,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:57:37,939 WARN L193 SmtUtils]: Spent 458.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 55 [2020-10-15 02:57:38,273 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-15 02:57:38,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:57:38,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:57:38,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:38,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:57:38,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:57:38,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:57:38,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 02:57:38,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:57:38,284 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:57:38,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:57:38,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:57:38,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:57:38,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:57:38,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 02:57:38,319 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [759391700] [2020-10-15 02:57:38,319 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 02:57:38,320 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-10-15 02:57:38,320 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30348893] [2020-10-15 02:57:38,320 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-15 02:57:38,321 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:57:38,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-15 02:57:38,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2020-10-15 02:57:38,321 INFO L87 Difference]: Start difference. First operand 12336 states and 17005 transitions. Second operand 15 states. [2020-10-15 02:57:38,579 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-15 02:57:39,452 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 60 [2020-10-15 02:57:39,670 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 66 [2020-10-15 02:57:40,526 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 29 [2020-10-15 02:57:49,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:57:49,124 INFO L93 Difference]: Finished difference Result 47958 states and 69721 transitions. [2020-10-15 02:57:49,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-15 02:57:49,125 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 111 [2020-10-15 02:57:49,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:57:49,169 INFO L225 Difference]: With dead ends: 47958 [2020-10-15 02:57:49,169 INFO L226 Difference]: Without dead ends: 43261 [2020-10-15 02:57:49,178 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=176, Invalid=694, Unknown=0, NotChecked=0, Total=870 [2020-10-15 02:57:49,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43261 states. [2020-10-15 02:57:50,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43261 to 13296. [2020-10-15 02:57:50,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13296 states. [2020-10-15 02:57:50,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13296 states to 13296 states and 18109 transitions. [2020-10-15 02:57:50,956 INFO L78 Accepts]: Start accepts. Automaton has 13296 states and 18109 transitions. Word has length 111 [2020-10-15 02:57:50,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:57:50,957 INFO L479 AbstractCegarLoop]: Abstraction has 13296 states and 18109 transitions. [2020-10-15 02:57:50,957 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-15 02:57:50,957 INFO L276 IsEmpty]: Start isEmpty. Operand 13296 states and 18109 transitions. [2020-10-15 02:57:50,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-15 02:57:50,964 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:57:50,965 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:57:50,965 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-15 02:57:50,965 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:57:50,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:57:50,965 INFO L82 PathProgramCache]: Analyzing trace with hash 1713491087, now seen corresponding path program 1 times [2020-10-15 02:57:50,965 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:57:50,965 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1761919981] [2020-10-15 02:57:50,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:57:50,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:57:51,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:51,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:51,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:57:51,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-15 02:57:51,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:57:51,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 488 [2020-10-15 02:57:51,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:57:51,481 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:57:51,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 02:57:51,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-15 02:57:51,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-15 02:57:51,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:57:51,716 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-15 02:57:51,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:57:51,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:57:51,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:51,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:57:51,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:57:51,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:57:51,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 02:57:51,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:57:51,728 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:57:51,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:57:51,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:57:51,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:57:51,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:57:51,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 02:57:51,743 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1761919981] [2020-10-15 02:57:51,743 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 02:57:51,743 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 02:57:51,743 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134182365] [2020-10-15 02:57:51,744 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 02:57:51,744 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:57:51,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 02:57:51,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 02:57:51,744 INFO L87 Difference]: Start difference. First operand 13296 states and 18109 transitions. Second operand 5 states. [2020-10-15 02:57:54,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:57:54,313 INFO L93 Difference]: Finished difference Result 21553 states and 29192 transitions. [2020-10-15 02:57:54,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 02:57:54,314 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 111 [2020-10-15 02:57:54,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:57:54,328 INFO L225 Difference]: With dead ends: 21553 [2020-10-15 02:57:54,328 INFO L226 Difference]: Without dead ends: 11457 [2020-10-15 02:57:54,340 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 02:57:54,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11457 states. [2020-10-15 02:57:55,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11457 to 11457. [2020-10-15 02:57:55,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11457 states. [2020-10-15 02:57:55,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11457 states to 11457 states and 15579 transitions. [2020-10-15 02:57:55,747 INFO L78 Accepts]: Start accepts. Automaton has 11457 states and 15579 transitions. Word has length 111 [2020-10-15 02:57:55,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:57:55,747 INFO L479 AbstractCegarLoop]: Abstraction has 11457 states and 15579 transitions. [2020-10-15 02:57:55,747 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 02:57:55,747 INFO L276 IsEmpty]: Start isEmpty. Operand 11457 states and 15579 transitions. [2020-10-15 02:57:55,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-15 02:57:55,751 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:57:55,752 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] [2020-10-15 02:57:55,752 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-15 02:57:55,752 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:57:55,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:57:55,752 INFO L82 PathProgramCache]: Analyzing trace with hash -1212578417, now seen corresponding path program 1 times [2020-10-15 02:57:55,752 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:57:55,752 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [464293368] [2020-10-15 02:57:55,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:57:55,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:57:55,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:55,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:56,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:56,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:57,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:57:57,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-15 02:57:57,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 02:57:57,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1810 [2020-10-15 02:57:57,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:57:57,580 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:57:57,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-15 02:57:57,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 02:57:57,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-15 02:57:57,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:57:57,975 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-15 02:57:57,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:57:57,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:57:57,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:57,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:57:57,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:57:57,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:57:57,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 02:57:57,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:57:57,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:57:57,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:57:57,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:57:57,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:57:57,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:57:58,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 02:57:58,015 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [464293368] [2020-10-15 02:57:58,015 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 02:57:58,016 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-15 02:57:58,016 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963772388] [2020-10-15 02:57:58,016 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-15 02:57:58,016 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:57:58,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-15 02:57:58,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-15 02:57:58,017 INFO L87 Difference]: Start difference. First operand 11457 states and 15579 transitions. Second operand 11 states. [2020-10-15 02:57:58,245 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-15 02:58:06,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:58:06,931 INFO L93 Difference]: Finished difference Result 44888 states and 64908 transitions. [2020-10-15 02:58:06,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-15 02:58:06,931 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 113 [2020-10-15 02:58:06,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:58:06,982 INFO L225 Difference]: With dead ends: 44888 [2020-10-15 02:58:06,982 INFO L226 Difference]: Without dead ends: 44815 [2020-10-15 02:58:06,990 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=114, Invalid=392, Unknown=0, NotChecked=0, Total=506 [2020-10-15 02:58:07,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44815 states. [2020-10-15 02:58:08,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44815 to 12617. [2020-10-15 02:58:08,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12617 states. [2020-10-15 02:58:08,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12617 states to 12617 states and 16887 transitions. [2020-10-15 02:58:08,946 INFO L78 Accepts]: Start accepts. Automaton has 12617 states and 16887 transitions. Word has length 113 [2020-10-15 02:58:08,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:58:08,946 INFO L479 AbstractCegarLoop]: Abstraction has 12617 states and 16887 transitions. [2020-10-15 02:58:08,946 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-15 02:58:08,946 INFO L276 IsEmpty]: Start isEmpty. Operand 12617 states and 16887 transitions. [2020-10-15 02:58:08,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-15 02:58:08,950 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:58:08,951 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] [2020-10-15 02:58:08,951 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-15 02:58:08,951 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:58:08,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:58:08,951 INFO L82 PathProgramCache]: Analyzing trace with hash -1723694753, now seen corresponding path program 1 times [2020-10-15 02:58:08,951 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:58:08,951 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1221093219] [2020-10-15 02:58:08,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:58:08,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-15 02:58:08,988 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-15 02:58:08,989 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-15 02:58:08,993 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-15 02:58:09,035 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 02:58:09 BoogieIcfgContainer [2020-10-15 02:58:09,035 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-15 02:58:09,037 INFO L168 Benchmark]: Toolchain (without parser) took 174471.32 ms. Allocated memory was 148.9 MB in the beginning and 2.7 GB in the end (delta: 2.6 GB). Free memory was 103.9 MB in the beginning and 1.4 GB in the end (delta: -1.3 GB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. [2020-10-15 02:58:09,038 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 148.9 MB. Free memory was 123.4 MB in the beginning and 123.0 MB in the end (delta: 419.9 kB). Peak memory consumption was 419.9 kB. Max. memory is 7.1 GB. [2020-10-15 02:58:09,038 INFO L168 Benchmark]: CACSL2BoogieTranslator took 741.90 ms. Allocated memory was 148.9 MB in the beginning and 205.5 MB in the end (delta: 56.6 MB). Free memory was 103.5 MB in the beginning and 176.0 MB in the end (delta: -72.6 MB). Peak memory consumption was 30.2 MB. Max. memory is 7.1 GB. [2020-10-15 02:58:09,039 INFO L168 Benchmark]: Boogie Preprocessor took 82.93 ms. Allocated memory is still 205.5 MB. Free memory was 176.0 MB in the beginning and 172.1 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 7.1 GB. [2020-10-15 02:58:09,039 INFO L168 Benchmark]: RCFGBuilder took 1280.43 ms. Allocated memory was 205.5 MB in the beginning and 233.3 MB in the end (delta: 27.8 MB). Free memory was 172.1 MB in the beginning and 182.8 MB in the end (delta: -10.7 MB). Peak memory consumption was 80.7 MB. Max. memory is 7.1 GB. [2020-10-15 02:58:09,040 INFO L168 Benchmark]: TraceAbstraction took 172359.98 ms. Allocated memory was 233.3 MB in the beginning and 2.7 GB in the end (delta: 2.5 GB). Free memory was 182.8 MB in the beginning and 1.4 GB in the end (delta: -1.2 GB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. [2020-10-15 02:58:09,042 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 148.9 MB. Free memory was 123.4 MB in the beginning and 123.0 MB in the end (delta: 419.9 kB). Peak memory consumption was 419.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 741.90 ms. Allocated memory was 148.9 MB in the beginning and 205.5 MB in the end (delta: 56.6 MB). Free memory was 103.5 MB in the beginning and 176.0 MB in the end (delta: -72.6 MB). Peak memory consumption was 30.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 82.93 ms. Allocated memory is still 205.5 MB. Free memory was 176.0 MB in the beginning and 172.1 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1280.43 ms. Allocated memory was 205.5 MB in the beginning and 233.3 MB in the end (delta: 27.8 MB). Free memory was 172.1 MB in the beginning and 182.8 MB in the end (delta: -10.7 MB). Peak memory consumption was 80.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 172359.98 ms. Allocated memory was 233.3 MB in the beginning and 2.7 GB in the end (delta: 2.5 GB). Free memory was 182.8 MB in the beginning and 1.4 GB in the end (delta: -1.2 GB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 516]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L1] int __return_main; [L14] msg_t nomsg = (msg_t )-1; [L15] port_t p12 = 0; [L16] char p12_old = '\x0'; [L17] char p12_new = '\x0'; [L18] _Bool ep12 = 0; [L19] port_t p13 = 0; [L20] char p13_old = '\x0'; [L21] char p13_new = '\x0'; [L22] _Bool ep13 = 0; [L23] port_t p21 = 0; [L24] char p21_old = '\x0'; [L25] char p21_new = '\x0'; [L26] _Bool ep21 = 0; [L27] port_t p23 = 0; [L28] char p23_old = '\x0'; [L29] char p23_new = '\x0'; [L30] _Bool ep23 = 0; [L31] port_t p31 = 0; [L32] char p31_old = '\x0'; [L33] char p31_new = '\x0'; [L34] _Bool ep31 = 0; [L35] port_t p32 = 0; [L36] char p32_old = '\x0'; [L37] char p32_new = '\x0'; [L38] _Bool ep32 = 0; [L39] char id1 = '\x0'; [L40] char r1 = '\x0'; [L41] char st1 = '\x0'; [L42] char nl1 = '\x0'; [L43] char m1 = '\x0'; [L44] char max1 = '\x0'; [L45] _Bool mode1 = 0; [L46] char id2 = '\x0'; [L47] char r2 = '\x0'; [L48] char st2 = '\x0'; [L49] char nl2 = '\x0'; [L50] char m2 = '\x0'; [L51] char max2 = '\x0'; [L52] _Bool mode2 = 0; [L53] char id3 = '\x0'; [L54] char r3 = '\x0'; [L55] char st3 = '\x0'; [L56] char nl3 = '\x0'; [L57] char m3 = '\x0'; [L58] char max3 = '\x0'; [L59] _Bool mode3 = 0; [L63] void (*nodes[3])() = { &node1, &node2, &node3 }; [L67] int __return_1131; [L68] int __return_1259; [L69] int __return_1679; [L70] int __return_1378; [L71] int __tmp_1379_0; [L72] int __return_1487; [L73] int __return_1392; [L76] int main__c1; [L77] int main__i2; [L78] main__c1 = 0 [L79] ep12 = __VERIFIER_nondet_bool() [L80] ep13 = __VERIFIER_nondet_bool() [L81] ep21 = __VERIFIER_nondet_bool() [L82] ep23 = __VERIFIER_nondet_bool() [L83] ep31 = __VERIFIER_nondet_bool() [L84] ep32 = __VERIFIER_nondet_bool() [L85] id1 = __VERIFIER_nondet_char() [L86] r1 = __VERIFIER_nondet_char() [L87] st1 = __VERIFIER_nondet_char() [L88] nl1 = __VERIFIER_nondet_char() [L89] m1 = __VERIFIER_nondet_char() [L90] max1 = __VERIFIER_nondet_char() [L91] mode1 = __VERIFIER_nondet_bool() [L92] id2 = __VERIFIER_nondet_char() [L93] r2 = __VERIFIER_nondet_char() [L94] st2 = __VERIFIER_nondet_char() [L95] nl2 = __VERIFIER_nondet_char() [L96] m2 = __VERIFIER_nondet_char() [L97] max2 = __VERIFIER_nondet_char() [L98] mode2 = __VERIFIER_nondet_bool() [L99] id3 = __VERIFIER_nondet_char() [L100] r3 = __VERIFIER_nondet_char() [L101] st3 = __VERIFIER_nondet_char() [L102] nl3 = __VERIFIER_nondet_char() [L103] m3 = __VERIFIER_nondet_char() [L104] max3 = __VERIFIER_nondet_char() [L105] mode3 = __VERIFIER_nondet_bool() [L107] _Bool init__r121; [L108] _Bool init__r131; [L109] _Bool init__r211; [L110] _Bool init__r231; [L111] _Bool init__r311; [L112] _Bool init__r321; [L113] _Bool init__r122; [L114] int init__tmp; [L115] _Bool init__r132; [L116] int init__tmp___0; [L117] _Bool init__r212; [L118] int init__tmp___1; [L119] _Bool init__r232; [L120] int init__tmp___2; [L121] _Bool init__r312; [L122] int init__tmp___3; [L123] _Bool init__r322; [L124] int init__tmp___4; [L125] int init__tmp___5; [L126] init__r121 = ep12 [L127] init__r131 = ep13 [L128] init__r211 = ep21 [L129] init__r231 = ep23 [L130] init__r311 = ep31 [L131] init__r321 = ep32 [L132] COND TRUE !(init__r121 == 0) [L134] init__tmp = 1 [L136] init__r122 = (_Bool)init__tmp [L137] COND FALSE !(!(init__r131 == 0)) [L1778] COND TRUE !(init__r121 == 0) [L1780] COND TRUE !(ep23 == 0) [L1782] init__tmp___0 = 1 [L141] init__r132 = (_Bool)init__tmp___0 [L142] COND FALSE !(!(init__r211 == 0)) [L1755] COND TRUE !(init__r231 == 0) [L1757] COND TRUE !(ep31 == 0) [L1759] init__tmp___1 = 1 [L146] init__r212 = (_Bool)init__tmp___1 [L147] COND TRUE !(init__r231 == 0) [L149] init__tmp___2 = 1 [L151] init__r232 = (_Bool)init__tmp___2 [L152] COND TRUE !(init__r311 == 0) [L154] init__tmp___3 = 1 [L156] init__r312 = (_Bool)init__tmp___3 [L157] COND FALSE !(!(init__r321 == 0)) [L1686] COND TRUE !(init__r311 == 0) [L1688] COND TRUE !(ep12 == 0) [L1690] init__tmp___4 = 1 [L161] init__r322 = (_Bool)init__tmp___4 [L162] COND TRUE ((int)id1) != ((int)id2) [L164] COND TRUE ((int)id1) != ((int)id3) [L166] COND TRUE ((int)id2) != ((int)id3) [L168] COND TRUE ((int)id1) >= 0 [L170] COND TRUE ((int)id2) >= 0 [L172] COND TRUE ((int)id3) >= 0 [L174] COND TRUE ((int)r1) == 0 [L176] COND TRUE ((int)r2) == 0 [L178] COND TRUE ((int)r3) == 0 [L180] COND TRUE !(init__r122 == 0) [L182] COND TRUE !(init__r132 == 0) [L184] COND TRUE !(init__r212 == 0) [L186] COND TRUE !(init__r232 == 0) [L188] COND TRUE !(init__r312 == 0) [L190] COND TRUE !(init__r322 == 0) [L192] COND TRUE ((int)max1) == ((int)id1) [L194] COND TRUE ((int)max2) == ((int)id2) [L196] COND TRUE ((int)max3) == ((int)id3) [L198] COND TRUE ((int)st1) == 0 [L200] COND TRUE ((int)st2) == 0 [L202] COND TRUE ((int)st3) == 0 [L204] COND TRUE ((int)nl1) == 0 [L206] COND TRUE ((int)nl2) == 0 [L208] COND TRUE ((int)nl3) == 0 [L210] COND TRUE ((int)mode1) == 0 [L212] COND TRUE ((int)mode2) == 0 [L214] COND TRUE ((int)mode3) == 0 [L216] init__tmp___5 = 1 [L217] __return_1131 = init__tmp___5 [L218] main__i2 = __return_1131 [L219] COND TRUE main__i2 != 0 [L221] p12_old = nomsg [L222] p12_new = nomsg [L223] p13_old = nomsg [L224] p13_new = nomsg [L225] p21_old = nomsg [L226] p21_new = nomsg [L227] p23_old = nomsg [L228] p23_new = nomsg [L229] p31_old = nomsg [L230] p31_new = nomsg [L231] p32_old = nomsg [L232] p32_new = nomsg [L233] main__i2 = 0 [L234] COND TRUE main__i2 < 6 [L237] COND FALSE !(!(mode1 == 0)) [L243] COND TRUE ((int)r1) < 2 [L245] COND TRUE !(ep12 == 0) [L247] int node1____CPAchecker_TMP_0; [L248] COND TRUE max1 != nomsg [L250] COND TRUE p12_new == nomsg [L252] node1____CPAchecker_TMP_0 = max1 [L254] p12_new = node1____CPAchecker_TMP_0 [L256] COND FALSE !(!(ep13 == 0)) [L267] mode1 = 1 [L269] COND FALSE !(!(mode2 == 0)) [L275] COND TRUE ((int)r2) < 2 [L277] COND FALSE !(!(ep21 == 0)) [L288] COND TRUE !(ep23 == 0) [L290] int node2____CPAchecker_TMP_1; [L291] COND TRUE max2 != nomsg [L293] COND TRUE p23_new == nomsg [L295] node2____CPAchecker_TMP_1 = max2 [L297] p23_new = node2____CPAchecker_TMP_1 [L299] mode2 = 1 [L301] COND FALSE !(!(mode3 == 0)) [L307] COND TRUE ((int)r3) < 2 [L309] COND TRUE !(ep31 == 0) [L311] int node3____CPAchecker_TMP_0; [L312] COND TRUE max3 != nomsg [L314] COND TRUE p31_new == nomsg [L316] node3____CPAchecker_TMP_0 = max3 [L318] p31_new = node3____CPAchecker_TMP_0 [L320] COND FALSE !(!(ep32 == 0)) [L331] mode3 = 1 [L332] p12_old = p12_new [L333] p12_new = nomsg [L334] p13_old = p13_new [L335] p13_new = nomsg [L336] p21_old = p21_new [L337] p21_new = nomsg [L338] p23_old = p23_new [L339] p23_new = nomsg [L340] p31_old = p31_new [L341] p31_new = nomsg [L342] p32_old = p32_new [L343] p32_new = nomsg [L345] int check__tmp; [L346] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L348] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L350] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L352] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L354] COND FALSE !(((int)r1) >= 2) [L360] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L362] COND TRUE ((int)r1) < 2 [L364] COND FALSE !(((int)r1) >= 2) [L370] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L372] COND TRUE ((int)r1) < 2 [L374] check__tmp = 1 [L375] __return_1259 = check__tmp [L376] main__c1 = __return_1259 [L378] _Bool __tmp_1; [L379] __tmp_1 = main__c1 [L380] _Bool assert__arg; [L381] assert__arg = __tmp_1 [L382] COND FALSE !(assert__arg == 0) [L388] int main____CPAchecker_TMP_0 = main__i2; [L389] main__i2 = main__i2 + 1 [L390] COND TRUE main__i2 < 6 [L393] COND TRUE !(mode1 == 0) [L395] r1 = (char)(((int)r1) + 1) [L396] COND FALSE !(!(ep21 == 0)) [L404] COND TRUE !(ep31 == 0) [L406] m1 = p31_old [L407] p31_old = nomsg [L408] COND FALSE !(((int)m1) > ((int)max1)) [L412] COND TRUE ((int)r1) == 1 [L414] COND TRUE ((int)max1) == ((int)id1) [L416] st1 = 1 [L417] mode1 = 0 [L419] COND TRUE !(mode2 == 0) [L421] r2 = (char)(((int)r2) + 1) [L422] COND TRUE !(ep12 == 0) [L424] m2 = p12_old [L425] p12_old = nomsg [L426] COND FALSE !(((int)m2) > ((int)max2)) [L430] COND FALSE !(!(ep32 == 0)) [L438] COND FALSE !(((int)r2) == 2) [L444] mode2 = 0 [L446] COND TRUE !(mode3 == 0) [L448] r3 = (char)(((int)r3) + 1) [L449] COND FALSE !(!(ep13 == 0)) [L457] COND TRUE !(ep23 == 0) [L459] m3 = p23_old [L460] p23_old = nomsg [L461] COND TRUE ((int)m3) > ((int)max3) [L463] max3 = m3 [L465] COND FALSE !(((int)r3) == 2) [L471] mode3 = 0 [L472] p12_old = p12_new [L473] p12_new = nomsg [L474] p13_old = p13_new [L475] p13_new = nomsg [L476] p21_old = p21_new [L477] p21_new = nomsg [L478] p23_old = p23_new [L479] p23_new = nomsg [L480] p31_old = p31_new [L481] p31_new = nomsg [L482] p32_old = p32_new [L483] p32_new = nomsg [L485] int check__tmp; [L486] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L488] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L490] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L492] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L494] COND FALSE !(((int)r1) >= 2) [L500] COND FALSE !(((((int)st1) + ((int)st2)) + ((int)st3)) == 0) [L506] check__tmp = 0 [L507] __return_1679 = check__tmp [L508] main__c1 = __return_1679 [L510] _Bool __tmp_2; [L511] __tmp_2 = main__c1 [L512] _Bool assert__arg; [L513] assert__arg = __tmp_2 [L514] COND TRUE assert__arg == 0 [L516] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 246 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 172.2s, OverallIterations: 19, TraceHistogramMax: 1, AutomataDifference: 69.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 8098 SDtfs, 21775 SDslu, 19054 SDs, 0 SdLazy, 13582 SolverSat, 624 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 22.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 226 GetRequests, 47 SyntacticMatches, 3 SemanticMatches, 176 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 452 ImplicationChecksByTransitivity, 9.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18337occurred in iteration=12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 16.6s AutomataMinimizationTime, 18 MinimizatonAttempts, 151516 StatesRemovedByMinimization, 15 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 84.4s InterpolantComputationTime, 1999 NumberOfCodeBlocks, 1999 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 1868 ConstructedInterpolants, 0 QuantifiedInterpolants, 1638996 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 18 InterpolantComputations, 18 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...