/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 04:50:33,260 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 04:50:33,265 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 04:50:33,322 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 04:50:33,323 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 04:50:33,331 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 04:50:33,333 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 04:50:33,338 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 04:50:33,342 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 04:50:33,349 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 04:50:33,350 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 04:50:33,352 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 04:50:33,353 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 04:50:33,356 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 04:50:33,358 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 04:50:33,360 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 04:50:33,361 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 04:50:33,365 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 04:50:33,372 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 04:50:33,380 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 04:50:33,383 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 04:50:33,385 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 04:50:33,387 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 04:50:33,389 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 04:50:33,399 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 04:50:33,399 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 04:50:33,400 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 04:50:33,402 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 04:50:33,403 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 04:50:33,405 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 04:50:33,405 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 04:50:33,406 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 04:50:33,408 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 04:50:33,409 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 04:50:33,411 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 04:50:33,411 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 04:50:33,412 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 04:50:33,412 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 04:50:33,413 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 04:50:33,414 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 04:50:33,415 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 04:50:33,422 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 04:50:33,493 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 04:50:33,493 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 04:50:33,495 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 04:50:33,495 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 04:50:33,495 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 04:50:33,495 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 04:50:33,496 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 04:50:33,496 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 04:50:33,496 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 04:50:33,496 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 04:50:33,497 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 04:50:33,497 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 04:50:33,497 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 04:50:33,497 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 04:50:33,498 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 04:50:33,498 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 04:50:33,498 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 04:50:33,499 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 04:50:33,499 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 04:50:33,499 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 04:50:33,500 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 04:50:33,500 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 04:50:33,500 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 04:50:33,500 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 04:50:33,501 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 04:50:33,501 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 04:50:33,501 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 04:50:33,501 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 04:50:33,502 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 04:50:33,502 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 04:50:33,891 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 04:50:33,936 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 04:50:33,939 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 04:50:33,941 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 04:50:33,942 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 04:50:33,943 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-10-27 04:50:34,026 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/24062e8a4/6e45ef64b8a04c58aac365727344bbce/FLAG43d443e80 [2020-10-27 04:50:34,773 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 04:50:34,773 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-10-27 04:50:34,791 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/24062e8a4/6e45ef64b8a04c58aac365727344bbce/FLAG43d443e80 [2020-10-27 04:50:35,055 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/24062e8a4/6e45ef64b8a04c58aac365727344bbce [2020-10-27 04:50:35,060 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 04:50:35,067 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 04:50:35,071 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 04:50:35,071 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 04:50:35,075 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 04:50:35,076 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:50:35" (1/1) ... [2020-10-27 04:50:35,085 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a684b51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:50:35, skipping insertion in model container [2020-10-27 04:50:35,085 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:50:35" (1/1) ... [2020-10-27 04:50:35,094 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 04:50:35,188 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 04:50:35,848 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 04:50:35,869 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 04:50:36,098 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 04:50:36,120 INFO L208 MainTranslator]: Completed translation [2020-10-27 04:50:36,121 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:50:36 WrapperNode [2020-10-27 04:50:36,121 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 04:50:36,122 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 04:50:36,122 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 04:50:36,123 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 04:50:36,136 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:50:36" (1/1) ... [2020-10-27 04:50:36,136 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:50:36" (1/1) ... [2020-10-27 04:50:36,159 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:50:36" (1/1) ... [2020-10-27 04:50:36,159 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:50:36" (1/1) ... [2020-10-27 04:50:36,212 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:50:36" (1/1) ... [2020-10-27 04:50:36,240 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:50:36" (1/1) ... [2020-10-27 04:50:36,248 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:50:36" (1/1) ... [2020-10-27 04:50:36,262 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 04:50:36,266 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 04:50:36,266 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 04:50:36,267 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 04:50:36,268 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:50:36" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 04:50:36,355 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 04:50:36,355 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 04:50:36,355 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 04:50:36,356 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 04:50:36,356 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 04:50:36,356 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 04:50:36,356 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 04:50:36,356 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 04:50:36,357 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 04:50:36,357 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 04:50:36,357 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 04:50:36,357 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 04:50:36,358 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 04:50:36,358 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 04:50:36,358 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 04:50:36,358 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 04:50:36,358 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 04:50:36,359 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 04:50:36,359 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 04:50:36,359 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 04:50:36,359 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 04:50:36,359 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 04:50:36,360 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 04:50:36,360 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 04:50:36,360 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 04:50:36,360 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 04:50:36,361 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 04:50:38,228 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 04:50:38,229 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-27 04:50:38,231 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:50:38 BoogieIcfgContainer [2020-10-27 04:50:38,232 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 04:50:38,234 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 04:50:38,234 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 04:50:38,238 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 04:50:38,238 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 04:50:35" (1/3) ... [2020-10-27 04:50:38,239 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27b4b07b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:50:38, skipping insertion in model container [2020-10-27 04:50:38,239 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:50:36" (2/3) ... [2020-10-27 04:50:38,239 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27b4b07b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:50:38, skipping insertion in model container [2020-10-27 04:50:38,240 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:50:38" (3/3) ... [2020-10-27 04:50:38,241 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-10-27 04:50:38,253 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 04:50:38,259 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 04:50:38,273 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 04:50:38,303 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 04:50:38,303 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 04:50:38,303 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 04:50:38,304 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 04:50:38,304 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 04:50:38,304 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 04:50:38,304 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 04:50:38,304 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 04:50:38,330 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states. [2020-10-27 04:50:38,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-10-27 04:50:38,347 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:50:38,348 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:50:38,348 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:50:38,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:50:38,355 INFO L82 PathProgramCache]: Analyzing trace with hash 722932052, now seen corresponding path program 1 times [2020-10-27 04:50:38,364 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:50:38,365 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1345237779] [2020-10-27 04:50:38,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:50:38,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:50:38,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:50:39,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:50:39,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:50:39,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:50:39,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:50:40,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:50:40,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:50:40,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:50:40,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:50:40,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:50:41,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:50:41,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:50:43,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:50:43,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:50:43,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:50:43,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-27 04:50:43,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-27 04:50:43,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-10-27 04:50:43,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:50:43,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:50:43,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:50:43,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-27 04:50:43,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-27 04:50:44,470 WARN L193 SmtUtils]: Spent 414.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-27 04:50:44,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:50:44,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:50:44,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:50:44,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:50:44,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:50:44,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:50:44,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 04:50:44,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:50:44,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:50:44,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:50:44,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:50:44,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:50:44,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:50:44,573 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1345237779] [2020-10-27 04:50:44,575 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:50:44,576 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 04:50:44,576 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390781406] [2020-10-27 04:50:44,581 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 04:50:44,582 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:50:44,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 04:50:44,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 04:50:44,599 INFO L87 Difference]: Start difference. First operand 380 states. Second operand 5 states. [2020-10-27 04:50:48,062 WARN L193 SmtUtils]: Spent 463.00 ms on a formula simplification that was a NOOP. DAG size: 229 [2020-10-27 04:50:49,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:50:49,412 INFO L93 Difference]: Finished difference Result 1075 states and 1944 transitions. [2020-10-27 04:50:49,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 04:50:49,414 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 138 [2020-10-27 04:50:49,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:50:49,434 INFO L225 Difference]: With dead ends: 1075 [2020-10-27 04:50:49,434 INFO L226 Difference]: Without dead ends: 704 [2020-10-27 04:50:49,441 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 04:50:49,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 704 states. [2020-10-27 04:50:49,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 704 to 687. [2020-10-27 04:50:49,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 687 states. [2020-10-27 04:50:49,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 687 states to 687 states and 989 transitions. [2020-10-27 04:50:49,579 INFO L78 Accepts]: Start accepts. Automaton has 687 states and 989 transitions. Word has length 138 [2020-10-27 04:50:49,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:50:49,581 INFO L481 AbstractCegarLoop]: Abstraction has 687 states and 989 transitions. [2020-10-27 04:50:49,582 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 04:50:49,582 INFO L276 IsEmpty]: Start isEmpty. Operand 687 states and 989 transitions. [2020-10-27 04:50:49,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-10-27 04:50:49,599 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:50:49,599 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:50:49,602 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 04:50:49,602 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:50:49,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:50:49,604 INFO L82 PathProgramCache]: Analyzing trace with hash 1383859564, now seen corresponding path program 1 times [2020-10-27 04:50:49,604 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:50:49,605 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1592565079] [2020-10-27 04:50:49,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:50:49,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:50:49,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:50:49,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:50:49,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:50:49,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:50:50,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:50:50,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:50:50,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:50:50,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:50:50,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:50:50,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:50:53,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:50:53,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:50:54,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:50:54,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:50:54,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:50:54,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-10-27 04:50:54,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-27 04:50:54,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5048 [2020-10-27 04:50:54,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:50:54,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:50:54,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:50:54,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-27 04:50:54,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:50:55,215 WARN L193 SmtUtils]: Spent 398.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-27 04:50:55,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:50:55,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:50:55,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:50:55,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:50:55,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:50:55,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:50:55,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-27 04:50:55,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:50:55,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:50:55,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:50:55,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:50:55,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:50:55,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:50:55,336 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1592565079] [2020-10-27 04:50:55,336 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:50:55,336 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 04:50:55,338 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878948281] [2020-10-27 04:50:55,341 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 04:50:55,341 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:50:55,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 04:50:55,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 04:50:55,349 INFO L87 Difference]: Start difference. First operand 687 states and 989 transitions. Second operand 5 states. [2020-10-27 04:50:58,135 WARN L193 SmtUtils]: Spent 413.00 ms on a formula simplification that was a NOOP. DAG size: 229 [2020-10-27 04:50:59,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:50:59,348 INFO L93 Difference]: Finished difference Result 1980 states and 2838 transitions. [2020-10-27 04:50:59,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 04:50:59,349 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 139 [2020-10-27 04:50:59,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:50:59,358 INFO L225 Difference]: With dead ends: 1980 [2020-10-27 04:50:59,359 INFO L226 Difference]: Without dead ends: 1327 [2020-10-27 04:50:59,367 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 04:50:59,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1327 states. [2020-10-27 04:50:59,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1327 to 1301. [2020-10-27 04:50:59,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1301 states. [2020-10-27 04:50:59,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1301 states to 1301 states and 1852 transitions. [2020-10-27 04:50:59,450 INFO L78 Accepts]: Start accepts. Automaton has 1301 states and 1852 transitions. Word has length 139 [2020-10-27 04:50:59,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:50:59,452 INFO L481 AbstractCegarLoop]: Abstraction has 1301 states and 1852 transitions. [2020-10-27 04:50:59,452 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 04:50:59,453 INFO L276 IsEmpty]: Start isEmpty. Operand 1301 states and 1852 transitions. [2020-10-27 04:50:59,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-10-27 04:50:59,456 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:50:59,457 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:50:59,457 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 04:50:59,457 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:50:59,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:50:59,461 INFO L82 PathProgramCache]: Analyzing trace with hash 470632726, now seen corresponding path program 1 times [2020-10-27 04:50:59,462 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:50:59,463 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [439541976] [2020-10-27 04:50:59,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:50:59,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:50:59,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:50:59,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:50:59,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:50:59,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:50:59,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:50:59,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:50:59,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:51:00,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:51:00,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:51:00,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:51:00,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:51:02,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:51:02,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:51:02,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:51:04,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:51:04,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-27 04:51:04,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-27 04:51:04,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-27 04:51:04,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:51:04,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:51:04,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:51:04,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-27 04:51:04,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:51:05,138 WARN L193 SmtUtils]: Spent 471.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-27 04:51:05,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:51:05,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:51:05,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:51:05,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:51:05,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:51:05,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:51:05,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 04:51:05,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:51:05,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:51:05,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:51:05,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:51:05,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:51:05,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:51:05,271 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [439541976] [2020-10-27 04:51:05,272 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:51:05,272 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 04:51:05,272 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832054718] [2020-10-27 04:51:05,273 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 04:51:05,273 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:51:05,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 04:51:05,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 04:51:05,274 INFO L87 Difference]: Start difference. First operand 1301 states and 1852 transitions. Second operand 5 states. [2020-10-27 04:51:07,851 WARN L193 SmtUtils]: Spent 397.00 ms on a formula simplification that was a NOOP. DAG size: 229 [2020-10-27 04:51:09,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:51:09,147 INFO L93 Difference]: Finished difference Result 3712 states and 5271 transitions. [2020-10-27 04:51:09,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 04:51:09,149 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 140 [2020-10-27 04:51:09,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:51:09,164 INFO L225 Difference]: With dead ends: 3712 [2020-10-27 04:51:09,165 INFO L226 Difference]: Without dead ends: 2509 [2020-10-27 04:51:09,168 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 04:51:09,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2509 states. [2020-10-27 04:51:09,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2509 to 2483. [2020-10-27 04:51:09,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2483 states. [2020-10-27 04:51:09,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2483 states to 2483 states and 3496 transitions. [2020-10-27 04:51:09,309 INFO L78 Accepts]: Start accepts. Automaton has 2483 states and 3496 transitions. Word has length 140 [2020-10-27 04:51:09,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:51:09,309 INFO L481 AbstractCegarLoop]: Abstraction has 2483 states and 3496 transitions. [2020-10-27 04:51:09,309 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 04:51:09,310 INFO L276 IsEmpty]: Start isEmpty. Operand 2483 states and 3496 transitions. [2020-10-27 04:51:09,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-10-27 04:51:09,315 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:51:09,315 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:51:09,315 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 04:51:09,315 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:51:09,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:51:09,316 INFO L82 PathProgramCache]: Analyzing trace with hash -694211731, now seen corresponding path program 1 times [2020-10-27 04:51:09,316 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:51:09,316 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [585441299] [2020-10-27 04:51:09,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:51:09,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:51:09,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:51:09,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:51:09,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:51:09,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:51:09,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:51:09,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:51:09,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:51:09,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:51:11,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:51:11,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:51:11,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:51:11,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:51:12,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:51:14,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:51:14,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-27 04:51:14,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-27 04:51:14,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-27 04:51:14,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:51:14,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:51:14,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:51:14,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-27 04:51:14,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:51:14,977 WARN L193 SmtUtils]: Spent 390.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-27 04:51:14,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:51:14,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:51:14,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:51:15,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:51:15,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:51:15,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:51:15,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-27 04:51:15,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:51:15,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:51:15,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:51:15,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:51:15,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:51:15,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:51:15,146 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [585441299] [2020-10-27 04:51:15,146 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:51:15,146 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 04:51:15,147 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055193577] [2020-10-27 04:51:15,148 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 04:51:15,148 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:51:15,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 04:51:15,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 04:51:15,149 INFO L87 Difference]: Start difference. First operand 2483 states and 3496 transitions. Second operand 5 states. [2020-10-27 04:51:18,245 WARN L193 SmtUtils]: Spent 394.00 ms on a formula simplification that was a NOOP. DAG size: 229 [2020-10-27 04:51:19,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:51:19,658 INFO L93 Difference]: Finished difference Result 7068 states and 9955 transitions. [2020-10-27 04:51:19,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 04:51:19,658 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 141 [2020-10-27 04:51:19,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:51:19,683 INFO L225 Difference]: With dead ends: 7068 [2020-10-27 04:51:19,684 INFO L226 Difference]: Without dead ends: 4814 [2020-10-27 04:51:19,690 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 04:51:19,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4814 states. [2020-10-27 04:51:19,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4814 to 4788. [2020-10-27 04:51:19,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4788 states. [2020-10-27 04:51:19,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4788 states to 4788 states and 6659 transitions. [2020-10-27 04:51:19,968 INFO L78 Accepts]: Start accepts. Automaton has 4788 states and 6659 transitions. Word has length 141 [2020-10-27 04:51:19,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:51:19,968 INFO L481 AbstractCegarLoop]: Abstraction has 4788 states and 6659 transitions. [2020-10-27 04:51:19,969 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 04:51:19,969 INFO L276 IsEmpty]: Start isEmpty. Operand 4788 states and 6659 transitions. [2020-10-27 04:51:19,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-10-27 04:51:19,977 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:51:19,977 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:51:19,977 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 04:51:19,977 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:51:19,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:51:19,978 INFO L82 PathProgramCache]: Analyzing trace with hash -981094792, now seen corresponding path program 1 times [2020-10-27 04:51:19,978 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:51:19,978 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [443413649] [2020-10-27 04:51:19,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:51:20,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:51:20,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:51:20,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:51:20,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:51:20,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:51:20,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:51:20,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:51:20,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:51:20,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:51:22,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:51:22,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:51:24,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:51:25,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:51:25,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-27 04:51:25,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-27 04:51:25,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-27 04:51:25,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:51:25,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:51:25,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:51:25,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-27 04:51:25,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:51:25,640 WARN L193 SmtUtils]: Spent 453.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-27 04:51:25,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:51:25,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:51:25,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:51:25,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:51:25,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:51:25,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:51:25,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 04:51:25,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:51:25,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:51:25,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:51:25,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:51:25,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 04:51:25,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:51:25,725 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [443413649] [2020-10-27 04:51:25,725 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:51:25,725 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 04:51:25,725 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854808399] [2020-10-27 04:51:25,726 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 04:51:25,726 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:51:25,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 04:51:25,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 04:51:25,738 INFO L87 Difference]: Start difference. First operand 4788 states and 6659 transitions. Second operand 5 states. [2020-10-27 04:51:28,769 WARN L193 SmtUtils]: Spent 407.00 ms on a formula simplification that was a NOOP. DAG size: 229 [2020-10-27 04:51:30,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:51:30,257 INFO L93 Difference]: Finished difference Result 13451 states and 18723 transitions. [2020-10-27 04:51:30,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 04:51:30,258 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 142 [2020-10-27 04:51:30,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:51:30,300 INFO L225 Difference]: With dead ends: 13451 [2020-10-27 04:51:30,301 INFO L226 Difference]: Without dead ends: 9231 [2020-10-27 04:51:30,312 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 04:51:30,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9231 states. [2020-10-27 04:51:30,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9231 to 9211. [2020-10-27 04:51:30,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9211 states. [2020-10-27 04:51:30,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9211 states to 9211 states and 12608 transitions. [2020-10-27 04:51:30,967 INFO L78 Accepts]: Start accepts. Automaton has 9211 states and 12608 transitions. Word has length 142 [2020-10-27 04:51:30,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:51:30,968 INFO L481 AbstractCegarLoop]: Abstraction has 9211 states and 12608 transitions. [2020-10-27 04:51:30,968 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 04:51:30,968 INFO L276 IsEmpty]: Start isEmpty. Operand 9211 states and 12608 transitions. [2020-10-27 04:51:30,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-10-27 04:51:30,982 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:51:30,982 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:51:30,982 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 04:51:30,983 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:51:30,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:51:30,983 INFO L82 PathProgramCache]: Analyzing trace with hash 1024094636, now seen corresponding path program 1 times [2020-10-27 04:51:30,983 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:51:30,984 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [667615624] [2020-10-27 04:51:30,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:51:31,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:51:31,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:51:31,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:51:31,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:51:31,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:51:31,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:51:31,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:51:32,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:51:32,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-27 04:51:32,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 04:51:32,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1718 [2020-10-27 04:51:32,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:51:32,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:51:32,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:51:32,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-10-27 04:51:32,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:51:33,234 WARN L193 SmtUtils]: Spent 366.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-27 04:51:33,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:51:33,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:51:33,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:51:33,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:51:33,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:51:33,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:51:33,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 04:51:33,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:51:33,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:51:33,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:51:33,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:51:33,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:51:33,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:51:33,337 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [667615624] [2020-10-27 04:51:33,339 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:51:33,339 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 04:51:33,339 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541513865] [2020-10-27 04:51:33,340 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 04:51:33,340 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:51:33,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 04:51:33,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 04:51:33,341 INFO L87 Difference]: Start difference. First operand 9211 states and 12608 transitions. Second operand 5 states. [2020-10-27 04:51:36,668 WARN L193 SmtUtils]: Spent 431.00 ms on a formula simplification that was a NOOP. DAG size: 229 [2020-10-27 04:51:38,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:51:38,504 INFO L93 Difference]: Finished difference Result 25089 states and 34464 transitions. [2020-10-27 04:51:38,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 04:51:38,505 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 143 [2020-10-27 04:51:38,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:51:38,563 INFO L225 Difference]: With dead ends: 25089 [2020-10-27 04:51:38,563 INFO L226 Difference]: Without dead ends: 17747 [2020-10-27 04:51:38,580 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 04:51:38,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17747 states. [2020-10-27 04:51:39,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17747 to 17717. [2020-10-27 04:51:39,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17717 states. [2020-10-27 04:51:39,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17717 states to 17717 states and 23928 transitions. [2020-10-27 04:51:39,671 INFO L78 Accepts]: Start accepts. Automaton has 17717 states and 23928 transitions. Word has length 143 [2020-10-27 04:51:39,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:51:39,672 INFO L481 AbstractCegarLoop]: Abstraction has 17717 states and 23928 transitions. [2020-10-27 04:51:39,672 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 04:51:39,672 INFO L276 IsEmpty]: Start isEmpty. Operand 17717 states and 23928 transitions. [2020-10-27 04:51:39,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-10-27 04:51:39,708 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:51:39,708 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:51:39,708 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 04:51:39,708 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:51:39,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:51:39,709 INFO L82 PathProgramCache]: Analyzing trace with hash -372243145, now seen corresponding path program 1 times [2020-10-27 04:51:39,709 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:51:39,709 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1788732860] [2020-10-27 04:51:39,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:51:39,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:51:39,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:51:40,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:51:40,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-27 04:51:40,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:51:40,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 294 [2020-10-27 04:51:40,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:51:40,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:51:40,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-27 04:51:40,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-27 04:51:40,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:51:40,533 WARN L193 SmtUtils]: Spent 425.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-27 04:51:40,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:51:40,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:51:40,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:51:40,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:51:40,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:51:40,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:51:40,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 04:51:40,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:51:40,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:51:40,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:51:40,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:51:40,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:51:40,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:51:40,618 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1788732860] [2020-10-27 04:51:40,618 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:51:40,618 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 04:51:40,619 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76683606] [2020-10-27 04:51:40,619 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 04:51:40,619 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:51:40,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 04:51:40,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 04:51:40,620 INFO L87 Difference]: Start difference. First operand 17717 states and 23928 transitions. Second operand 4 states. [2020-10-27 04:51:41,077 WARN L193 SmtUtils]: Spent 409.00 ms on a formula simplification that was a NOOP. DAG size: 224 [2020-10-27 04:51:44,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:51:44,431 INFO L93 Difference]: Finished difference Result 30494 states and 42831 transitions. [2020-10-27 04:51:44,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 04:51:44,432 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 144 [2020-10-27 04:51:44,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:51:44,477 INFO L225 Difference]: With dead ends: 30494 [2020-10-27 04:51:44,477 INFO L226 Difference]: Without dead ends: 23384 [2020-10-27 04:51:44,492 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 04:51:44,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23384 states. [2020-10-27 04:51:45,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23384 to 23381. [2020-10-27 04:51:45,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23381 states. [2020-10-27 04:51:45,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23381 states to 23381 states and 31944 transitions. [2020-10-27 04:51:45,964 INFO L78 Accepts]: Start accepts. Automaton has 23381 states and 31944 transitions. Word has length 144 [2020-10-27 04:51:45,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:51:45,964 INFO L481 AbstractCegarLoop]: Abstraction has 23381 states and 31944 transitions. [2020-10-27 04:51:45,964 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 04:51:45,964 INFO L276 IsEmpty]: Start isEmpty. Operand 23381 states and 31944 transitions. [2020-10-27 04:51:45,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-10-27 04:51:45,994 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:51:45,994 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:51:45,995 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 04:51:45,995 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:51:45,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:51:45,995 INFO L82 PathProgramCache]: Analyzing trace with hash 2021810111, now seen corresponding path program 1 times [2020-10-27 04:51:45,996 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:51:45,996 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [383249336] [2020-10-27 04:51:45,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:51:46,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:51:46,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:51:46,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:51:46,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-27 04:51:46,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:51:46,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-27 04:51:46,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:51:46,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:51:46,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-27 04:51:46,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-27 04:51:46,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:51:46,608 WARN L193 SmtUtils]: Spent 379.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-27 04:51:46,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:51:46,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:51:46,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:51:46,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:51:46,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:51:46,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:51:46,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 04:51:46,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:51:46,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:51:46,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:51:46,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:51:46,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:51:46,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:51:46,676 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [383249336] [2020-10-27 04:51:46,676 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:51:46,676 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 04:51:46,682 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283122133] [2020-10-27 04:51:46,682 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 04:51:46,683 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:51:46,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 04:51:46,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 04:51:46,683 INFO L87 Difference]: Start difference. First operand 23381 states and 31944 transitions. Second operand 4 states. [2020-10-27 04:51:47,187 WARN L193 SmtUtils]: Spent 461.00 ms on a formula simplification that was a NOOP. DAG size: 224 [2020-10-27 04:51:51,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:51:51,742 INFO L93 Difference]: Finished difference Result 43279 states and 61486 transitions. [2020-10-27 04:51:51,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 04:51:51,742 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 144 [2020-10-27 04:51:51,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:51:51,797 INFO L225 Difference]: With dead ends: 43279 [2020-10-27 04:51:51,797 INFO L226 Difference]: Without dead ends: 34569 [2020-10-27 04:51:51,818 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 04:51:51,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34569 states. [2020-10-27 04:51:54,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34569 to 34346. [2020-10-27 04:51:54,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34346 states. [2020-10-27 04:51:54,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34346 states to 34346 states and 47406 transitions. [2020-10-27 04:51:54,250 INFO L78 Accepts]: Start accepts. Automaton has 34346 states and 47406 transitions. Word has length 144 [2020-10-27 04:51:54,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:51:54,250 INFO L481 AbstractCegarLoop]: Abstraction has 34346 states and 47406 transitions. [2020-10-27 04:51:54,250 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 04:51:54,250 INFO L276 IsEmpty]: Start isEmpty. Operand 34346 states and 47406 transitions. [2020-10-27 04:51:54,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-10-27 04:51:54,436 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:51:54,436 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:51:54,437 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 04:51:54,437 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:51:54,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:51:54,437 INFO L82 PathProgramCache]: Analyzing trace with hash 2011313046, now seen corresponding path program 1 times [2020-10-27 04:51:54,438 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:51:54,439 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [493664143] [2020-10-27 04:51:54,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:51:54,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-27 04:51:54,500 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-27 04:51:54,501 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-27 04:51:54,506 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 04:51:54,583 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 04:51:54 BoogieIcfgContainer [2020-10-27 04:51:54,584 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-27 04:51:54,586 INFO L168 Benchmark]: Toolchain (without parser) took 79523.03 ms. Allocated memory was 156.2 MB in the beginning and 1.9 GB in the end (delta: 1.8 GB). Free memory was 130.6 MB in the beginning and 1.7 GB in the end (delta: -1.6 GB). Peak memory consumption was 196.8 MB. Max. memory is 8.0 GB. [2020-10-27 04:51:54,587 INFO L168 Benchmark]: CDTParser took 0.56 ms. Allocated memory is still 156.2 MB. Free memory is still 131.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 04:51:54,587 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1050.41 ms. Allocated memory is still 156.2 MB. Free memory was 130.2 MB in the beginning and 98.1 MB in the end (delta: 32.1 MB). Peak memory consumption was 32.5 MB. Max. memory is 8.0 GB. [2020-10-27 04:51:54,589 INFO L168 Benchmark]: Boogie Preprocessor took 140.46 ms. Allocated memory is still 156.2 MB. Free memory was 98.1 MB in the beginning and 93.5 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2020-10-27 04:51:54,592 INFO L168 Benchmark]: RCFGBuilder took 1965.67 ms. Allocated memory was 156.2 MB in the beginning and 204.5 MB in the end (delta: 48.2 MB). Free memory was 93.5 MB in the beginning and 142.8 MB in the end (delta: -49.3 MB). Peak memory consumption was 58.5 MB. Max. memory is 8.0 GB. [2020-10-27 04:51:54,599 INFO L168 Benchmark]: TraceAbstraction took 76349.71 ms. Allocated memory was 204.5 MB in the beginning and 1.9 GB in the end (delta: 1.7 GB). Free memory was 142.3 MB in the beginning and 1.7 GB in the end (delta: -1.6 GB). Peak memory consumption was 159.3 MB. Max. memory is 8.0 GB. [2020-10-27 04:51:54,602 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.56 ms. Allocated memory is still 156.2 MB. Free memory is still 131.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 1050.41 ms. Allocated memory is still 156.2 MB. Free memory was 130.2 MB in the beginning and 98.1 MB in the end (delta: 32.1 MB). Peak memory consumption was 32.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 140.46 ms. Allocated memory is still 156.2 MB. Free memory was 98.1 MB in the beginning and 93.5 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1965.67 ms. Allocated memory was 156.2 MB in the beginning and 204.5 MB in the end (delta: 48.2 MB). Free memory was 93.5 MB in the beginning and 142.8 MB in the end (delta: -49.3 MB). Peak memory consumption was 58.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 76349.71 ms. Allocated memory was 204.5 MB in the beginning and 1.9 GB in the end (delta: 1.7 GB). Free memory was 142.3 MB in the beginning and 1.7 GB in the end (delta: -1.6 GB). Peak memory consumption was 159.3 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 4]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L1] int __return_main; [L16] msg_t nomsg = (msg_t )-1; [L17] port_t p12 = 0; [L18] char p12_old = '\x0'; [L19] char p12_new = '\x0'; [L20] _Bool ep12 = 0; [L21] port_t p13 = 0; [L22] char p13_old = '\x0'; [L23] char p13_new = '\x0'; [L24] _Bool ep13 = 0; [L25] port_t p21 = 0; [L26] char p21_old = '\x0'; [L27] char p21_new = '\x0'; [L28] _Bool ep21 = 0; [L29] port_t p23 = 0; [L30] char p23_old = '\x0'; [L31] char p23_new = '\x0'; [L32] _Bool ep23 = 0; [L33] port_t p31 = 0; [L34] char p31_old = '\x0'; [L35] char p31_new = '\x0'; [L36] _Bool ep31 = 0; [L37] port_t p32 = 0; [L38] char p32_old = '\x0'; [L39] char p32_new = '\x0'; [L40] _Bool ep32 = 0; [L41] char id1 = '\x0'; [L42] char r1 = '\x0'; [L43] char st1 = '\x0'; [L44] char nl1 = '\x0'; [L45] char m1 = '\x0'; [L46] char max1 = '\x0'; [L47] _Bool mode1 = 0; [L48] char id2 = '\x0'; [L49] char r2 = '\x0'; [L50] char st2 = '\x0'; [L51] char nl2 = '\x0'; [L52] char m2 = '\x0'; [L53] char max2 = '\x0'; [L54] _Bool mode2 = 0; [L55] char id3 = '\x0'; [L56] char r3 = '\x0'; [L57] char st3 = '\x0'; [L58] char nl3 = '\x0'; [L59] char m3 = '\x0'; [L60] char max3 = '\x0'; [L61] _Bool mode3 = 0; [L65] void (*nodes[3])() = { &node1, &node2, &node3 }; [L69] int __return_1708; [L70] int __return_1836; [L71] int __return_1954; [L72] int __return_2075; [L73] int __return_2801; [L74] int __return_2770; [L75] int __return_2712; [L76] int __return_2678; [L77] int __tmp_2199_0; [L78] int __return_2307; [L79] int __return_2212; [L80] int __return_2575; [L81] int __return_2541; [L82] int __return_2462; [L83] int __return_2198; [L86] int main__c1; [L87] int main__i2; [L88] main__c1 = 0 [L89] ep12 = __VERIFIER_nondet_bool() [L90] ep13 = __VERIFIER_nondet_bool() [L91] ep21 = __VERIFIER_nondet_bool() [L92] ep23 = __VERIFIER_nondet_bool() [L93] ep31 = __VERIFIER_nondet_bool() [L94] ep32 = __VERIFIER_nondet_bool() [L95] id1 = __VERIFIER_nondet_char() [L96] r1 = __VERIFIER_nondet_char() [L97] st1 = __VERIFIER_nondet_char() [L98] nl1 = __VERIFIER_nondet_char() [L99] m1 = __VERIFIER_nondet_char() [L100] max1 = __VERIFIER_nondet_char() [L101] mode1 = __VERIFIER_nondet_bool() [L102] id2 = __VERIFIER_nondet_char() [L103] r2 = __VERIFIER_nondet_char() [L104] st2 = __VERIFIER_nondet_char() [L105] nl2 = __VERIFIER_nondet_char() [L106] m2 = __VERIFIER_nondet_char() [L107] max2 = __VERIFIER_nondet_char() [L108] mode2 = __VERIFIER_nondet_bool() [L109] id3 = __VERIFIER_nondet_char() [L110] r3 = __VERIFIER_nondet_char() [L111] st3 = __VERIFIER_nondet_char() [L112] nl3 = __VERIFIER_nondet_char() [L113] m3 = __VERIFIER_nondet_char() [L114] max3 = __VERIFIER_nondet_char() [L115] mode3 = __VERIFIER_nondet_bool() [L117] _Bool init__r121; [L118] _Bool init__r131; [L119] _Bool init__r211; [L120] _Bool init__r231; [L121] _Bool init__r311; [L122] _Bool init__r321; [L123] _Bool init__r122; [L124] int init__tmp; [L125] _Bool init__r132; [L126] int init__tmp___0; [L127] _Bool init__r212; [L128] int init__tmp___1; [L129] _Bool init__r232; [L130] int init__tmp___2; [L131] _Bool init__r312; [L132] int init__tmp___3; [L133] _Bool init__r322; [L134] int init__tmp___4; [L135] int init__tmp___5; [L136] init__r121 = ep12 [L137] init__r131 = ep13 [L138] init__r211 = ep21 [L139] init__r231 = ep23 [L140] init__r311 = ep31 [L141] init__r321 = ep32 [L142] COND FALSE !(!(init__r121 == 0)) [L2912] COND FALSE !(!(init__r131 == 0)) [L2928] init__tmp = 0 [L146] init__r122 = (_Bool)init__tmp [L147] COND FALSE !(!(init__r131 == 0)) [L2889] COND FALSE !(!(init__r121 == 0)) [L2905] init__tmp___0 = 0 [L151] init__r132 = (_Bool)init__tmp___0 [L152] COND FALSE !(!(init__r211 == 0)) [L2866] COND FALSE !(!(init__r231 == 0)) [L2882] init__tmp___1 = 0 [L156] init__r212 = (_Bool)init__tmp___1 [L157] COND FALSE !(!(init__r231 == 0)) [L2843] COND FALSE !(!(init__r211 == 0)) [L2859] init__tmp___2 = 0 [L161] init__r232 = (_Bool)init__tmp___2 [L162] COND FALSE !(!(init__r311 == 0)) [L2820] COND FALSE !(!(init__r321 == 0)) [L2836] init__tmp___3 = 0 [L166] init__r312 = (_Bool)init__tmp___3 [L167] COND FALSE !(!(init__r321 == 0)) [L2797] COND FALSE !(!(init__r311 == 0)) [L2813] init__tmp___4 = 0 [L171] init__r322 = (_Bool)init__tmp___4 [L172] COND TRUE ((int)id1) != ((int)id2) [L174] COND TRUE ((int)id1) != ((int)id3) [L176] COND TRUE ((int)id2) != ((int)id3) [L178] COND TRUE ((int)id1) >= 0 [L180] COND TRUE ((int)id2) >= 0 [L182] COND TRUE ((int)id3) >= 0 [L184] COND TRUE ((int)r1) == 0 [L186] COND TRUE ((int)r2) == 0 [L188] COND TRUE ((int)r3) == 0 [L190] COND TRUE ((int)max1) == ((int)id1) [L192] COND TRUE ((int)max2) == ((int)id2) [L194] COND TRUE ((int)max3) == ((int)id3) [L196] COND TRUE ((int)st1) == 0 [L198] COND TRUE ((int)st2) == 0 [L200] COND TRUE ((int)st3) == 0 [L202] COND TRUE ((int)nl1) == 0 [L204] COND TRUE ((int)nl2) == 0 [L206] COND TRUE ((int)nl3) == 0 [L208] COND TRUE ((int)mode1) == 0 [L210] COND TRUE ((int)mode2) == 0 [L212] COND TRUE ((int)mode3) == 0 [L214] init__tmp___5 = 1 [L215] __return_1708 = init__tmp___5 [L216] main__i2 = __return_1708 [L217] COND TRUE main__i2 != 0 [L219] p12_old = nomsg [L220] p12_new = nomsg [L221] p13_old = nomsg [L222] p13_new = nomsg [L223] p21_old = nomsg [L224] p21_new = nomsg [L225] p23_old = nomsg [L226] p23_new = nomsg [L227] p31_old = nomsg [L228] p31_new = nomsg [L229] p32_old = nomsg [L230] p32_new = nomsg [L231] main__i2 = 0 [L232] COND TRUE main__i2 < 6 [L235] COND FALSE !(!(mode1 == 0)) [L241] COND TRUE ((int)r1) < 2 [L243] COND FALSE !(!(ep12 == 0)) [L254] COND FALSE !(!(ep13 == 0)) [L265] mode1 = 1 [L267] COND FALSE !(!(mode2 == 0)) [L273] COND TRUE ((int)r2) < 2 [L275] COND FALSE !(!(ep21 == 0)) [L286] COND FALSE !(!(ep23 == 0)) [L297] mode2 = 1 [L299] COND FALSE !(!(mode3 == 0)) [L305] COND TRUE ((int)r3) < 2 [L307] COND FALSE !(!(ep31 == 0)) [L318] COND FALSE !(!(ep32 == 0)) [L329] mode3 = 1 [L330] p12_old = p12_new [L331] p12_new = nomsg [L332] p13_old = p13_new [L333] p13_new = nomsg [L334] p21_old = p21_new [L335] p21_new = nomsg [L336] p23_old = p23_new [L337] p23_new = nomsg [L338] p31_old = p31_new [L339] p31_new = nomsg [L340] p32_old = p32_new [L341] p32_new = nomsg [L343] int check__tmp; [L344] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L346] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L348] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L350] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L352] COND FALSE !(((int)r1) >= 2) [L358] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L360] COND TRUE ((int)r1) < 2 [L362] COND FALSE !(((int)r1) >= 2) [L368] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L370] COND TRUE ((int)r1) < 2 [L372] check__tmp = 1 [L373] __return_1836 = check__tmp [L374] main__c1 = __return_1836 [L376] _Bool __tmp_1; [L377] __tmp_1 = main__c1 [L378] _Bool assert__arg; [L379] assert__arg = __tmp_1 [L380] COND FALSE !(assert__arg == 0) [L386] int main____CPAchecker_TMP_0 = main__i2; [L387] main__i2 = main__i2 + 1 [L388] COND TRUE main__i2 < 6 [L391] COND TRUE !(mode1 == 0) [L393] r1 = (char)(((int)r1) + 1) [L394] COND FALSE !(!(ep21 == 0)) [L402] COND FALSE !(!(ep31 == 0)) [L410] COND FALSE !(((int)r1) == 2) [L416] mode1 = 0 [L418] COND TRUE !(mode2 == 0) [L420] r2 = (char)(((int)r2) + 1) [L421] COND FALSE !(!(ep12 == 0)) [L429] COND FALSE !(!(ep32 == 0)) [L437] COND FALSE !(((int)r2) == 2) [L443] mode2 = 0 [L445] COND TRUE !(mode3 == 0) [L447] r3 = (char)(((int)r3) + 1) [L448] COND FALSE !(!(ep13 == 0)) [L456] COND FALSE !(!(ep23 == 0)) [L464] COND FALSE !(((int)r3) == 2) [L470] mode3 = 0 [L471] p12_old = p12_new [L472] p12_new = nomsg [L473] p13_old = p13_new [L474] p13_new = nomsg [L475] p21_old = p21_new [L476] p21_new = nomsg [L477] p23_old = p23_new [L478] p23_new = nomsg [L479] p31_old = p31_new [L480] p31_new = nomsg [L481] p32_old = p32_new [L482] p32_new = nomsg [L484] int check__tmp; [L485] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L487] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L489] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L491] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L493] COND FALSE !(((int)r1) >= 2) [L499] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L501] COND TRUE ((int)r1) < 2 [L503] COND FALSE !(((int)r1) >= 2) [L509] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L511] COND TRUE ((int)r1) < 2 [L513] check__tmp = 1 [L514] __return_1954 = check__tmp [L515] main__c1 = __return_1954 [L517] _Bool __tmp_2; [L518] __tmp_2 = main__c1 [L519] _Bool assert__arg; [L520] assert__arg = __tmp_2 [L521] COND FALSE !(assert__arg == 0) [L527] int main____CPAchecker_TMP_0 = main__i2; [L528] main__i2 = main__i2 + 1 [L529] COND TRUE main__i2 < 6 [L532] COND FALSE !(!(mode1 == 0)) [L538] COND TRUE ((int)r1) < 2 [L540] COND FALSE !(!(ep12 == 0)) [L551] COND FALSE !(!(ep13 == 0)) [L562] mode1 = 1 [L564] COND FALSE !(!(mode2 == 0)) [L570] COND TRUE ((int)r2) < 2 [L572] COND FALSE !(!(ep21 == 0)) [L583] COND FALSE !(!(ep23 == 0)) [L594] mode2 = 1 [L596] COND FALSE !(!(mode3 == 0)) [L602] COND TRUE ((int)r3) < 2 [L604] COND FALSE !(!(ep31 == 0)) [L615] COND FALSE !(!(ep32 == 0)) [L626] mode3 = 1 [L627] p12_old = p12_new [L628] p12_new = nomsg [L629] p13_old = p13_new [L630] p13_new = nomsg [L631] p21_old = p21_new [L632] p21_new = nomsg [L633] p23_old = p23_new [L634] p23_new = nomsg [L635] p31_old = p31_new [L636] p31_new = nomsg [L637] p32_old = p32_new [L638] p32_new = nomsg [L640] int check__tmp; [L641] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L643] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L645] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L647] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L649] COND FALSE !(((int)r1) >= 2) [L655] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L657] COND TRUE ((int)r1) < 2 [L659] COND FALSE !(((int)r1) >= 2) [L665] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L667] COND TRUE ((int)r1) < 2 [L669] check__tmp = 1 [L670] __return_2075 = check__tmp [L671] main__c1 = __return_2075 [L673] _Bool __tmp_3; [L674] __tmp_3 = main__c1 [L675] _Bool assert__arg; [L676] assert__arg = __tmp_3 [L677] COND FALSE !(assert__arg == 0) [L683] int main____CPAchecker_TMP_0 = main__i2; [L684] main__i2 = main__i2 + 1 [L685] COND TRUE main__i2 < 6 [L688] COND TRUE !(mode1 == 0) [L690] r1 = (char)(((int)r1) + 1) [L691] COND FALSE !(!(ep21 == 0)) [L699] COND FALSE !(!(ep31 == 0)) [L707] COND TRUE ((int)r1) == 2 [L709] COND TRUE ((int)max1) == ((int)id1) [L711] st1 = 1 [L712] mode1 = 0 [L714] COND TRUE !(mode2 == 0) [L716] r2 = (char)(((int)r2) + 1) [L717] COND FALSE !(!(ep12 == 0)) [L725] COND FALSE !(!(ep32 == 0)) [L733] COND TRUE ((int)r2) == 2 [L735] COND TRUE ((int)max2) == ((int)id2) [L737] st2 = 1 [L738] mode2 = 0 [L740] COND TRUE !(mode3 == 0) [L742] r3 = (char)(((int)r3) + 1) [L743] COND FALSE !(!(ep13 == 0)) [L751] COND FALSE !(!(ep23 == 0)) [L759] COND TRUE ((int)r3) == 2 [L761] COND TRUE ((int)max3) == ((int)id3) [L763] st3 = 1 [L764] mode3 = 0 [L765] p12_old = p12_new [L766] p12_new = nomsg [L767] p13_old = p13_new [L768] p13_new = nomsg [L769] p21_old = p21_new [L770] p21_new = nomsg [L771] p23_old = p23_new [L772] p23_new = nomsg [L773] p31_old = p31_new [L774] p31_new = nomsg [L775] p32_old = p32_new [L776] p32_new = nomsg [L778] int check__tmp; [L779] COND FALSE !(((((int)st1) + ((int)st2)) + ((int)st3)) <= 1) [L785] check__tmp = 0 [L786] __return_2801 = check__tmp [L787] main__c1 = __return_2801 [L789] _Bool __tmp_4; [L790] __tmp_4 = main__c1 [L791] _Bool assert__arg; [L792] assert__arg = __tmp_4 [L793] COND TRUE assert__arg == 0 [L795] CALL reach_error() [L4] __assert_fail("0", "pals_floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c", 4, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 384 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 76.2s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 36.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 7006 SDtfs, 6967 SDslu, 3746 SDs, 0 SdLazy, 7672 SolverSat, 195 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 21.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 62 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 7.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34346occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 6.2s AutomataMinimizationTime, 8 MinimizatonAttempts, 371 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 32.1s InterpolantComputationTime, 1275 NumberOfCodeBlocks, 1275 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 1123 ConstructedInterpolants, 0 QuantifiedInterpolants, 1008819 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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...