/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 12:53:46,366 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 12:53:46,370 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 12:53:46,406 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 12:53:46,407 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 12:53:46,408 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 12:53:46,410 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 12:53:46,412 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 12:53:46,415 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 12:53:46,416 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 12:53:46,417 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 12:53:46,419 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 12:53:46,419 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 12:53:46,421 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 12:53:46,422 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 12:53:46,424 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 12:53:46,425 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 12:53:46,426 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 12:53:46,428 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 12:53:46,433 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 12:53:46,435 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 12:53:46,437 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 12:53:46,438 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 12:53:46,439 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 12:53:46,459 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 12:53:46,460 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 12:53:46,460 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 12:53:46,463 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 12:53:46,464 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 12:53:46,467 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 12:53:46,467 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 12:53:46,468 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 12:53:46,470 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 12:53:46,472 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 12:53:46,473 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 12:53:46,473 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 12:53:46,474 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 12:53:46,474 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 12:53:46,475 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 12:53:46,476 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 12:53:46,478 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 12:53:46,479 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 12:53:46,537 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 12:53:46,537 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 12:53:46,542 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 12:53:46,543 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 12:53:46,543 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 12:53:46,543 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 12:53:46,544 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 12:53:46,544 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 12:53:46,544 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 12:53:46,545 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 12:53:46,546 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 12:53:46,546 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 12:53:46,546 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 12:53:46,547 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 12:53:46,547 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 12:53:46,547 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 12:53:46,547 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 12:53:46,548 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 12:53:46,548 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 12:53:46,548 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 12:53:46,549 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 12:53:46,549 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 12:53:46,549 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 12:53:46,549 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 12:53:46,550 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 12:53:46,550 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 12:53:46,550 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 12:53:46,550 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 12:53:46,551 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 12:53:46,551 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 12:53:46,954 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 12:53:46,995 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 12:53:46,998 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 12:53:47,000 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 12:53:47,001 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 12:53:47,002 INFO L432 ainManager$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+nlh-reducer.c [2020-10-29 12:53:47,088 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/000d35d17/ee7efa5fefa54a288f1b04b08f6e8f63/FLAG8c443b450 [2020-10-29 12:53:47,779 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 12:53:47,780 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2020-10-29 12:53:47,800 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/000d35d17/ee7efa5fefa54a288f1b04b08f6e8f63/FLAG8c443b450 [2020-10-29 12:53:48,068 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/000d35d17/ee7efa5fefa54a288f1b04b08f6e8f63 [2020-10-29 12:53:48,071 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 12:53:48,078 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 12:53:48,080 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 12:53:48,080 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 12:53:48,084 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 12:53:48,085 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 12:53:48" (1/1) ... [2020-10-29 12:53:48,088 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58ad2e2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:53:48, skipping insertion in model container [2020-10-29 12:53:48,089 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 12:53:48" (1/1) ... [2020-10-29 12:53:48,097 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 12:53:48,151 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 12:53:48,649 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 12:53:48,665 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 12:53:48,918 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 12:53:48,943 INFO L208 MainTranslator]: Completed translation [2020-10-29 12:53:48,944 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:53:48 WrapperNode [2020-10-29 12:53:48,944 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 12:53:48,946 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 12:53:48,946 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 12:53:48,946 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 12:53:48,961 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:53:48" (1/1) ... [2020-10-29 12:53:48,961 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:53:48" (1/1) ... [2020-10-29 12:53:48,979 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:53:48" (1/1) ... [2020-10-29 12:53:48,979 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:53:48" (1/1) ... [2020-10-29 12:53:49,007 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:53:48" (1/1) ... [2020-10-29 12:53:49,047 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:53:48" (1/1) ... [2020-10-29 12:53:49,057 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:53:48" (1/1) ... [2020-10-29 12:53:49,072 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 12:53:49,073 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 12:53:49,073 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 12:53:49,074 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 12:53:49,080 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:53:48" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 12:53:49,174 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 12:53:49,174 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 12:53:49,175 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 12:53:49,176 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-29 12:53:49,176 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 12:53:49,177 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 12:53:49,177 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 12:53:49,177 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 12:53:49,177 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 12:53:49,177 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-29 12:53:49,178 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-29 12:53:49,178 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-29 12:53:49,179 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-29 12:53:49,179 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-29 12:53:49,179 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-29 12:53:49,180 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-29 12:53:49,180 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-29 12:53:49,180 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-29 12:53:49,180 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-29 12:53:49,180 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-29 12:53:49,181 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 12:53:49,181 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 12:53:49,181 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 12:53:49,181 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 12:53:49,181 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 12:53:49,181 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 12:53:49,182 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 12:53:50,898 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 12:53:50,899 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-29 12:53:50,901 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 12:53:50 BoogieIcfgContainer [2020-10-29 12:53:50,902 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 12:53:50,904 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 12:53:50,904 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 12:53:50,908 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 12:53:50,908 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 12:53:48" (1/3) ... [2020-10-29 12:53:50,909 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50dcbf7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 12:53:50, skipping insertion in model container [2020-10-29 12:53:50,910 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:53:48" (2/3) ... [2020-10-29 12:53:50,910 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50dcbf7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 12:53:50, skipping insertion in model container [2020-10-29 12:53:50,910 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 12:53:50" (3/3) ... [2020-10-29 12:53:50,912 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2020-10-29 12:53:50,926 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 12:53:50,932 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 12:53:50,947 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 12:53:50,981 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 12:53:50,981 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 12:53:50,982 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 12:53:50,982 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 12:53:50,982 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 12:53:50,982 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 12:53:50,982 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 12:53:50,983 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 12:53:51,009 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states. [2020-10-29 12:53:51,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-10-29 12:53:51,025 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:53:51,027 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] [2020-10-29 12:53:51,027 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:53:51,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:53:51,035 INFO L82 PathProgramCache]: Analyzing trace with hash -450222276, now seen corresponding path program 1 times [2020-10-29 12:53:51,046 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:53:51,046 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [920737818] [2020-10-29 12:53:51,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:53:51,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:53:51,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:53:51,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:53:52,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:53:52,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:53:52,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:53:52,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:53:52,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:53:52,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:53:53,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:53:53,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:53:53,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:53:54,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:53:55,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:53:56,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:53:56,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-29 12:53:56,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-29 12:53:56,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5042 [2020-10-29 12:53:56,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:53:56,571 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:53:56,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:53:56,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-29 12:53:56,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-29 12:53:56,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-29 12:53:57,142 WARN L193 SmtUtils]: Spent 368.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-29 12:53:57,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:53:57,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:53:57,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:53:57,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:53:57,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:53:57,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:53:57,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 12:53:57,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:53:57,173 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:53:57,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:53:57,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:53:57,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:53:57,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:53:57,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:53:57,268 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [920737818] [2020-10-29 12:53:57,270 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:53:57,271 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 12:53:57,271 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542091168] [2020-10-29 12:53:57,277 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 12:53:57,277 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:53:57,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 12:53:57,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 12:53:57,295 INFO L87 Difference]: Start difference. First operand 308 states. Second operand 4 states. [2020-10-29 12:53:57,810 WARN L193 SmtUtils]: Spent 397.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2020-10-29 12:53:59,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:53:59,549 INFO L93 Difference]: Finished difference Result 605 states and 1054 transitions. [2020-10-29 12:53:59,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 12:53:59,552 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 143 [2020-10-29 12:53:59,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:53:59,573 INFO L225 Difference]: With dead ends: 605 [2020-10-29 12:53:59,573 INFO L226 Difference]: Without dead ends: 489 [2020-10-29 12:53:59,578 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 [2020-10-29 12:53:59,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 489 states. [2020-10-29 12:53:59,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 489 to 486. [2020-10-29 12:53:59,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 486 states. [2020-10-29 12:53:59,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 486 states to 486 states and 725 transitions. [2020-10-29 12:53:59,692 INFO L78 Accepts]: Start accepts. Automaton has 486 states and 725 transitions. Word has length 143 [2020-10-29 12:53:59,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:53:59,696 INFO L481 AbstractCegarLoop]: Abstraction has 486 states and 725 transitions. [2020-10-29 12:53:59,696 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 12:53:59,696 INFO L276 IsEmpty]: Start isEmpty. Operand 486 states and 725 transitions. [2020-10-29 12:53:59,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-10-29 12:53:59,711 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:53:59,711 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] [2020-10-29 12:53:59,712 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 12:53:59,712 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:53:59,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:53:59,714 INFO L82 PathProgramCache]: Analyzing trace with hash -2103345622, now seen corresponding path program 1 times [2020-10-29 12:53:59,714 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:53:59,714 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [242220955] [2020-10-29 12:53:59,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:53:59,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:53:59,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:53:59,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:54:00,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:54:00,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:54:00,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:54:00,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:54:00,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:54:00,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:54:00,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:54:01,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:54:01,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:54:01,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:54:02,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:54:04,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:54:04,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-29 12:54:04,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-29 12:54:04,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-29 12:54:04,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:54:04,815 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:54:04,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:54:04,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-29 12:54:04,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-29 12:54:04,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:54:05,259 WARN L193 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-29 12:54:05,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:54:05,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:54:05,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:54:05,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:54:05,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:54:05,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:54:05,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 12:54:05,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:54:05,290 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:54:05,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:54:05,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:54:05,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:54:05,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:54:05,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:54:05,358 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [242220955] [2020-10-29 12:54:05,358 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:54:05,358 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 12:54:05,360 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995732460] [2020-10-29 12:54:05,363 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 12:54:05,363 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:54:05,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 12:54:05,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 12:54:05,375 INFO L87 Difference]: Start difference. First operand 486 states and 725 transitions. Second operand 4 states. [2020-10-29 12:54:05,761 WARN L193 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2020-10-29 12:54:07,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:54:07,198 INFO L93 Difference]: Finished difference Result 1030 states and 1578 transitions. [2020-10-29 12:54:07,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 12:54:07,199 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 143 [2020-10-29 12:54:07,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:54:07,210 INFO L225 Difference]: With dead ends: 1030 [2020-10-29 12:54:07,210 INFO L226 Difference]: Without dead ends: 847 [2020-10-29 12:54:07,214 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 12:54:07,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 847 states. [2020-10-29 12:54:07,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 847 to 844. [2020-10-29 12:54:07,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 844 states. [2020-10-29 12:54:07,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 844 states to 844 states and 1269 transitions. [2020-10-29 12:54:07,280 INFO L78 Accepts]: Start accepts. Automaton has 844 states and 1269 transitions. Word has length 143 [2020-10-29 12:54:07,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:54:07,282 INFO L481 AbstractCegarLoop]: Abstraction has 844 states and 1269 transitions. [2020-10-29 12:54:07,282 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 12:54:07,282 INFO L276 IsEmpty]: Start isEmpty. Operand 844 states and 1269 transitions. [2020-10-29 12:54:07,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-10-29 12:54:07,289 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:54:07,289 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] [2020-10-29 12:54:07,289 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 12:54:07,289 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:54:07,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:54:07,294 INFO L82 PathProgramCache]: Analyzing trace with hash 166960083, now seen corresponding path program 1 times [2020-10-29 12:54:07,294 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:54:07,295 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1263319933] [2020-10-29 12:54:07,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:54:07,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:54:07,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:54:07,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:54:07,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:54:07,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:54:07,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:54:07,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:54:07,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:54:07,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:54:08,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:54:08,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:54:08,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:54:09,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:54:12,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:54:12,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-29 12:54:12,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-29 12:54:12,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-29 12:54:12,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:54:12,370 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:54:12,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:54:12,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 12:54:12,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-29 12:54:12,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:54:12,782 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-29 12:54:12,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:54:12,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:54:12,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:54:12,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:54:12,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:54:12,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:54:12,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-29 12:54:12,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:54:12,829 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:54:12,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:54:12,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:54:12,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:54:12,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:54:12,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:54:12,941 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1263319933] [2020-10-29 12:54:12,941 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:54:12,942 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 12:54:12,942 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600893143] [2020-10-29 12:54:12,944 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 12:54:12,944 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:54:12,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 12:54:12,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 12:54:12,946 INFO L87 Difference]: Start difference. First operand 844 states and 1269 transitions. Second operand 5 states. [2020-10-29 12:54:14,849 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-29 12:54:15,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:54:15,771 INFO L93 Difference]: Finished difference Result 2449 states and 3675 transitions. [2020-10-29 12:54:15,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 12:54:15,772 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 143 [2020-10-29 12:54:15,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:54:15,784 INFO L225 Difference]: With dead ends: 2449 [2020-10-29 12:54:15,784 INFO L226 Difference]: Without dead ends: 1630 [2020-10-29 12:54:15,790 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 12:54:15,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1630 states. [2020-10-29 12:54:15,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1630 to 1627. [2020-10-29 12:54:15,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1627 states. [2020-10-29 12:54:15,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1627 states to 1627 states and 2423 transitions. [2020-10-29 12:54:15,888 INFO L78 Accepts]: Start accepts. Automaton has 1627 states and 2423 transitions. Word has length 143 [2020-10-29 12:54:15,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:54:15,889 INFO L481 AbstractCegarLoop]: Abstraction has 1627 states and 2423 transitions. [2020-10-29 12:54:15,889 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 12:54:15,889 INFO L276 IsEmpty]: Start isEmpty. Operand 1627 states and 2423 transitions. [2020-10-29 12:54:15,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-10-29 12:54:15,896 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:54:15,896 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] [2020-10-29 12:54:15,896 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 12:54:15,896 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:54:15,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:54:15,897 INFO L82 PathProgramCache]: Analyzing trace with hash 529222173, now seen corresponding path program 1 times [2020-10-29 12:54:15,897 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:54:15,897 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2067759940] [2020-10-29 12:54:15,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:54:15,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:54:15,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:54:16,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:54:16,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:54:16,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:54:16,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:54:16,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:54:16,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:54:16,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:54:16,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:54:16,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:54:18,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:54:18,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:54:18,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:54:20,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:54:20,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-29 12:54:20,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-29 12:54:20,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 12:54:20,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:54:20,937 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:54:20,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:54:20,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 12:54:20,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-29 12:54:20,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:54:21,441 WARN L193 SmtUtils]: Spent 405.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-29 12:54:21,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:54:21,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:54:21,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:54:21,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:54:21,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:54:21,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:54:21,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 12:54:21,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:54:21,462 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:54:21,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:54:21,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:54:21,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:54:21,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:54:21,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:54:21,527 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2067759940] [2020-10-29 12:54:21,527 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:54:21,528 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 12:54:21,528 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729057062] [2020-10-29 12:54:21,529 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 12:54:21,529 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:54:21,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 12:54:21,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 12:54:21,530 INFO L87 Difference]: Start difference. First operand 1627 states and 2423 transitions. Second operand 5 states. [2020-10-29 12:54:23,531 WARN L193 SmtUtils]: Spent 399.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-29 12:54:24,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:54:24,465 INFO L93 Difference]: Finished difference Result 4737 states and 7035 transitions. [2020-10-29 12:54:24,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 12:54:24,469 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 144 [2020-10-29 12:54:24,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:54:24,486 INFO L225 Difference]: With dead ends: 4737 [2020-10-29 12:54:24,486 INFO L226 Difference]: Without dead ends: 3135 [2020-10-29 12:54:24,490 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 [2020-10-29 12:54:24,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3135 states. [2020-10-29 12:54:24,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3135 to 3132. [2020-10-29 12:54:24,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3132 states. [2020-10-29 12:54:24,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3132 states to 3132 states and 4604 transitions. [2020-10-29 12:54:24,658 INFO L78 Accepts]: Start accepts. Automaton has 3132 states and 4604 transitions. Word has length 144 [2020-10-29 12:54:24,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:54:24,659 INFO L481 AbstractCegarLoop]: Abstraction has 3132 states and 4604 transitions. [2020-10-29 12:54:24,659 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 12:54:24,659 INFO L276 IsEmpty]: Start isEmpty. Operand 3132 states and 4604 transitions. [2020-10-29 12:54:24,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-10-29 12:54:24,665 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:54:24,665 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:54:24,665 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 12:54:24,665 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:54:24,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:54:24,666 INFO L82 PathProgramCache]: Analyzing trace with hash -813225519, now seen corresponding path program 1 times [2020-10-29 12:54:24,666 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:54:24,666 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1747228609] [2020-10-29 12:54:24,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:54:24,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:54:24,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:54:24,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:54:24,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:54:24,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:54:24,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:54:25,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:54:25,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:54:25,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:54:26,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:54:26,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:54:26,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:54:28,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:54:28,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:54:28,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:54:28,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:54:29,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:54:29,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:54:29,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-29 12:54:29,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-29 12:54:29,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-29 12:54:29,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:54:29,696 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:54:29,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:54:29,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 12:54:29,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-29 12:54:29,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:54:30,211 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-29 12:54:30,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:54:30,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:54:30,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:54:30,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:54:30,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:54:30,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:54:30,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-29 12:54:30,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:54:30,244 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:54:30,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:54:30,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:54:30,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:54:30,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:54:30,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:54:30,325 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1747228609] [2020-10-29 12:54:30,325 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:54:30,325 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 12:54:30,326 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655783778] [2020-10-29 12:54:30,326 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 12:54:30,326 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:54:30,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 12:54:30,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 12:54:30,327 INFO L87 Difference]: Start difference. First operand 3132 states and 4604 transitions. Second operand 5 states. [2020-10-29 12:54:32,751 WARN L193 SmtUtils]: Spent 388.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-29 12:54:33,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:54:33,918 INFO L93 Difference]: Finished difference Result 9030 states and 13264 transitions. [2020-10-29 12:54:33,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 12:54:33,925 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 145 [2020-10-29 12:54:33,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:54:33,955 INFO L225 Difference]: With dead ends: 9030 [2020-10-29 12:54:33,955 INFO L226 Difference]: Without dead ends: 6051 [2020-10-29 12:54:33,963 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 12:54:33,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6051 states. [2020-10-29 12:54:34,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6051 to 6048. [2020-10-29 12:54:34,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6048 states. [2020-10-29 12:54:34,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6048 states to 6048 states and 8792 transitions. [2020-10-29 12:54:34,332 INFO L78 Accepts]: Start accepts. Automaton has 6048 states and 8792 transitions. Word has length 145 [2020-10-29 12:54:34,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:54:34,332 INFO L481 AbstractCegarLoop]: Abstraction has 6048 states and 8792 transitions. [2020-10-29 12:54:34,332 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 12:54:34,332 INFO L276 IsEmpty]: Start isEmpty. Operand 6048 states and 8792 transitions. [2020-10-29 12:54:34,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-29 12:54:34,343 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:54:34,343 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:54:34,343 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 12:54:34,344 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:54:34,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:54:34,344 INFO L82 PathProgramCache]: Analyzing trace with hash 781700030, now seen corresponding path program 1 times [2020-10-29 12:54:34,344 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:54:34,345 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [588791639] [2020-10-29 12:54:34,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:54:34,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:54:34,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:54:34,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:54:34,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:54:34,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:54:34,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:54:34,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:54:35,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:54:35,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:54:35,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:54:35,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:54:35,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:54:36,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:54:38,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:54:39,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:54:39,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-29 12:54:39,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-29 12:54:39,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-29 12:54:39,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:54:39,386 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:54:39,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:54:39,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 12:54:39,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-29 12:54:39,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:54:39,822 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-29 12:54:39,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:54:39,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:54:39,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:54:39,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:54:39,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:54:39,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:54:39,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 12:54:39,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:54:39,840 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:54:39,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:54:39,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:54:39,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:54:39,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:54:39,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:54:39,927 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [588791639] [2020-10-29 12:54:39,927 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:54:39,927 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 12:54:39,928 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817631650] [2020-10-29 12:54:39,928 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 12:54:39,928 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:54:39,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 12:54:39,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 12:54:39,929 INFO L87 Difference]: Start difference. First operand 6048 states and 8792 transitions. Second operand 5 states. [2020-10-29 12:54:42,351 WARN L193 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-29 12:54:43,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:54:43,592 INFO L93 Difference]: Finished difference Result 17181 states and 25007 transitions. [2020-10-29 12:54:43,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 12:54:43,593 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 146 [2020-10-29 12:54:43,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:54:43,642 INFO L225 Difference]: With dead ends: 17181 [2020-10-29 12:54:43,642 INFO L226 Difference]: Without dead ends: 11662 [2020-10-29 12:54:43,657 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 12:54:43,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11662 states. [2020-10-29 12:54:44,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11662 to 11659. [2020-10-29 12:54:44,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11659 states. [2020-10-29 12:54:44,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11659 states to 11659 states and 16747 transitions. [2020-10-29 12:54:44,716 INFO L78 Accepts]: Start accepts. Automaton has 11659 states and 16747 transitions. Word has length 146 [2020-10-29 12:54:44,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:54:44,716 INFO L481 AbstractCegarLoop]: Abstraction has 11659 states and 16747 transitions. [2020-10-29 12:54:44,716 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 12:54:44,717 INFO L276 IsEmpty]: Start isEmpty. Operand 11659 states and 16747 transitions. [2020-10-29 12:54:44,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-10-29 12:54:44,737 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:54:44,737 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:54:44,737 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 12:54:44,738 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:54:44,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:54:44,738 INFO L82 PathProgramCache]: Analyzing trace with hash -1116390447, now seen corresponding path program 1 times [2020-10-29 12:54:44,740 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:54:44,740 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1905850282] [2020-10-29 12:54:44,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:54:44,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:54:44,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:54:44,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:54:44,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:54:45,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:54:45,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:54:45,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:54:45,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:54:46,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:54:47,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:54:47,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-29 12:54:47,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 12:54:47,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2926 [2020-10-29 12:54:47,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:54:47,716 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:54:47,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:54:47,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 12:54:47,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-29 12:54:47,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:54:48,141 WARN L193 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-29 12:54:48,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:54:48,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:54:48,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:54:48,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:54:48,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:54:48,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:54:48,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 12:54:48,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:54:48,159 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:54:48,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:54:48,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:54:48,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:54:48,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:54:48,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:54:48,239 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1905850282] [2020-10-29 12:54:48,239 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:54:48,239 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 12:54:48,240 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600387164] [2020-10-29 12:54:48,240 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 12:54:48,240 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:54:48,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 12:54:48,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 12:54:48,241 INFO L87 Difference]: Start difference. First operand 11659 states and 16747 transitions. Second operand 5 states. [2020-10-29 12:54:51,062 WARN L193 SmtUtils]: Spent 369.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-29 12:54:52,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:54:52,664 INFO L93 Difference]: Finished difference Result 31319 states and 44898 transitions. [2020-10-29 12:54:52,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 12:54:52,665 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 147 [2020-10-29 12:54:52,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:54:52,725 INFO L225 Difference]: With dead ends: 31319 [2020-10-29 12:54:52,725 INFO L226 Difference]: Without dead ends: 20210 [2020-10-29 12:54:52,751 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 12:54:52,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20210 states. [2020-10-29 12:54:54,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20210 to 20207. [2020-10-29 12:54:54,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20207 states. [2020-10-29 12:54:54,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20207 states to 20207 states and 28522 transitions. [2020-10-29 12:54:54,285 INFO L78 Accepts]: Start accepts. Automaton has 20207 states and 28522 transitions. Word has length 147 [2020-10-29 12:54:54,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:54:54,285 INFO L481 AbstractCegarLoop]: Abstraction has 20207 states and 28522 transitions. [2020-10-29 12:54:54,285 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 12:54:54,285 INFO L276 IsEmpty]: Start isEmpty. Operand 20207 states and 28522 transitions. [2020-10-29 12:54:54,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-29 12:54:54,315 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:54:54,316 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:54:54,316 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 12:54:54,316 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:54:54,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:54:54,317 INFO L82 PathProgramCache]: Analyzing trace with hash 2090965279, now seen corresponding path program 1 times [2020-10-29 12:54:54,317 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:54:54,317 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [676393706] [2020-10-29 12:54:54,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:54:54,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:54:54,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:54:54,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:54:54,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:54:54,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:54:54,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:54:55,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:54:55,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-29 12:54:55,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 12:54:55,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 986 [2020-10-29 12:54:55,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:54:55,326 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:54:55,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:54:55,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 12:54:55,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-29 12:54:55,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:54:55,741 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-29 12:54:55,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:54:55,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:54:55,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:54:55,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:54:55,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:54:55,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:54:55,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 12:54:55,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:54:55,757 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:54:55,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:54:55,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:54:55,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:54:55,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:54:55,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:54:55,800 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [676393706] [2020-10-29 12:54:55,800 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:54:55,800 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 12:54:55,800 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283404859] [2020-10-29 12:54:55,801 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 12:54:55,801 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:54:55,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 12:54:55,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 12:54:55,808 INFO L87 Difference]: Start difference. First operand 20207 states and 28522 transitions. Second operand 5 states. [2020-10-29 12:54:59,220 WARN L193 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-29 12:55:01,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:55:01,575 INFO L93 Difference]: Finished difference Result 54328 states and 76528 transitions. [2020-10-29 12:55:01,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 12:55:01,576 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 148 [2020-10-29 12:55:01,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:55:01,650 INFO L225 Difference]: With dead ends: 54328 [2020-10-29 12:55:01,650 INFO L226 Difference]: Without dead ends: 35085 [2020-10-29 12:55:01,699 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 12:55:01,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35085 states. [2020-10-29 12:55:04,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35085 to 35082. [2020-10-29 12:55:04,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35082 states. [2020-10-29 12:55:04,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35082 states to 35082 states and 48628 transitions. [2020-10-29 12:55:04,587 INFO L78 Accepts]: Start accepts. Automaton has 35082 states and 48628 transitions. Word has length 148 [2020-10-29 12:55:04,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:55:04,587 INFO L481 AbstractCegarLoop]: Abstraction has 35082 states and 48628 transitions. [2020-10-29 12:55:04,587 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 12:55:04,587 INFO L276 IsEmpty]: Start isEmpty. Operand 35082 states and 48628 transitions. [2020-10-29 12:55:04,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-10-29 12:55:04,629 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:55:04,630 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:55:04,630 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 12:55:04,630 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:55:04,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:55:04,631 INFO L82 PathProgramCache]: Analyzing trace with hash 225960784, now seen corresponding path program 1 times [2020-10-29 12:55:04,631 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:55:04,631 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1483069687] [2020-10-29 12:55:04,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:55:04,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-29 12:55:04,681 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-29 12:55:04,682 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-29 12:55:04,687 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 12:55:04,734 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 12:55:04 BoogieIcfgContainer [2020-10-29 12:55:04,735 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-29 12:55:04,737 INFO L168 Benchmark]: Toolchain (without parser) took 76662.95 ms. Allocated memory was 161.5 MB in the beginning and 1.8 GB in the end (delta: 1.6 GB). Free memory was 135.7 MB in the beginning and 1.1 GB in the end (delta: -1.0 GB). Peak memory consumption was 586.5 MB. Max. memory is 8.0 GB. [2020-10-29 12:55:04,737 INFO L168 Benchmark]: CDTParser took 0.69 ms. Allocated memory is still 161.5 MB. Free memory is still 134.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-29 12:55:04,738 INFO L168 Benchmark]: CACSL2BoogieTranslator took 865.18 ms. Allocated memory is still 161.5 MB. Free memory was 135.1 MB in the beginning and 108.5 MB in the end (delta: 26.6 MB). Peak memory consumption was 27.3 MB. Max. memory is 8.0 GB. [2020-10-29 12:55:04,739 INFO L168 Benchmark]: Boogie Preprocessor took 126.55 ms. Allocated memory is still 161.5 MB. Free memory was 108.5 MB in the beginning and 104.4 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2020-10-29 12:55:04,740 INFO L168 Benchmark]: RCFGBuilder took 1828.84 ms. Allocated memory was 161.5 MB in the beginning and 194.0 MB in the end (delta: 32.5 MB). Free memory was 104.4 MB in the beginning and 145.8 MB in the end (delta: -41.4 MB). Peak memory consumption was 54.3 MB. Max. memory is 8.0 GB. [2020-10-29 12:55:04,740 INFO L168 Benchmark]: TraceAbstraction took 73830.91 ms. Allocated memory was 194.0 MB in the beginning and 1.8 GB in the end (delta: 1.6 GB). Free memory was 145.3 MB in the beginning and 1.1 GB in the end (delta: -995.0 MB). Peak memory consumption was 562.6 MB. Max. memory is 8.0 GB. [2020-10-29 12:55:04,744 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.69 ms. Allocated memory is still 161.5 MB. Free memory is still 134.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 865.18 ms. Allocated memory is still 161.5 MB. Free memory was 135.1 MB in the beginning and 108.5 MB in the end (delta: 26.6 MB). Peak memory consumption was 27.3 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 126.55 ms. Allocated memory is still 161.5 MB. Free memory was 108.5 MB in the beginning and 104.4 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1828.84 ms. Allocated memory was 161.5 MB in the beginning and 194.0 MB in the end (delta: 32.5 MB). Free memory was 104.4 MB in the beginning and 145.8 MB in the end (delta: -41.4 MB). Peak memory consumption was 54.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 73830.91 ms. Allocated memory was 194.0 MB in the beginning and 1.8 GB in the end (delta: 1.6 GB). Free memory was 145.3 MB in the beginning and 1.1 GB in the end (delta: -995.0 MB). Peak memory consumption was 562.6 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_2198; [L74] int __tmp_2199_0; [L75] int __return_2307; [L76] int __return_2212; [L79] int main__c1; [L80] int main__i2; [L81] main__c1 = 0 [L82] ep12 = __VERIFIER_nondet_bool() [L83] ep13 = __VERIFIER_nondet_bool() [L84] ep21 = __VERIFIER_nondet_bool() [L85] ep23 = __VERIFIER_nondet_bool() [L86] ep31 = __VERIFIER_nondet_bool() [L87] ep32 = __VERIFIER_nondet_bool() [L88] id1 = __VERIFIER_nondet_char() [L89] r1 = __VERIFIER_nondet_char() [L90] st1 = __VERIFIER_nondet_char() [L91] nl1 = __VERIFIER_nondet_char() [L92] m1 = __VERIFIER_nondet_char() [L93] max1 = __VERIFIER_nondet_char() [L94] mode1 = __VERIFIER_nondet_bool() [L95] id2 = __VERIFIER_nondet_char() [L96] r2 = __VERIFIER_nondet_char() [L97] st2 = __VERIFIER_nondet_char() [L98] nl2 = __VERIFIER_nondet_char() [L99] m2 = __VERIFIER_nondet_char() [L100] max2 = __VERIFIER_nondet_char() [L101] mode2 = __VERIFIER_nondet_bool() [L102] id3 = __VERIFIER_nondet_char() [L103] r3 = __VERIFIER_nondet_char() [L104] st3 = __VERIFIER_nondet_char() [L105] nl3 = __VERIFIER_nondet_char() [L106] m3 = __VERIFIER_nondet_char() [L107] max3 = __VERIFIER_nondet_char() [L108] mode3 = __VERIFIER_nondet_bool() [L110] _Bool init__r121; [L111] _Bool init__r131; [L112] _Bool init__r211; [L113] _Bool init__r231; [L114] _Bool init__r311; [L115] _Bool init__r321; [L116] _Bool init__r122; [L117] int init__tmp; [L118] _Bool init__r132; [L119] int init__tmp___0; [L120] _Bool init__r212; [L121] int init__tmp___1; [L122] _Bool init__r232; [L123] int init__tmp___2; [L124] _Bool init__r312; [L125] int init__tmp___3; [L126] _Bool init__r322; [L127] int init__tmp___4; [L128] int init__tmp___5; [L129] init__r121 = ep12 [L130] init__r131 = ep13 [L131] init__r211 = ep21 [L132] init__r231 = ep23 [L133] init__r311 = ep31 [L134] init__r321 = ep32 [L135] COND FALSE !(!(init__r121 == 0)) [L2225] COND FALSE !(!(init__r131 == 0)) [L2241] init__tmp = 0 [L139] init__r122 = (_Bool)init__tmp [L140] COND FALSE !(!(init__r131 == 0)) [L2202] COND FALSE !(!(init__r121 == 0)) [L2218] init__tmp___0 = 0 [L144] init__r132 = (_Bool)init__tmp___0 [L145] COND FALSE !(!(init__r211 == 0)) [L2179] COND FALSE !(!(init__r231 == 0)) [L2195] init__tmp___1 = 0 [L149] init__r212 = (_Bool)init__tmp___1 [L150] COND FALSE !(!(init__r231 == 0)) [L2156] COND FALSE !(!(init__r211 == 0)) [L2172] init__tmp___2 = 0 [L154] init__r232 = (_Bool)init__tmp___2 [L155] COND FALSE !(!(init__r311 == 0)) [L2133] COND FALSE !(!(init__r321 == 0)) [L2149] init__tmp___3 = 0 [L159] init__r312 = (_Bool)init__tmp___3 [L160] COND FALSE !(!(init__r321 == 0)) [L2110] COND FALSE !(!(init__r311 == 0)) [L2126] init__tmp___4 = 0 [L164] init__r322 = (_Bool)init__tmp___4 [L165] COND TRUE ((int)id1) != ((int)id2) [L167] COND TRUE ((int)id1) != ((int)id3) [L169] COND TRUE ((int)id2) != ((int)id3) [L171] COND TRUE ((int)id1) >= 0 [L173] COND TRUE ((int)id2) >= 0 [L175] COND TRUE ((int)id3) >= 0 [L177] COND TRUE ((int)r1) == 0 [L179] COND TRUE ((int)r2) == 0 [L181] COND TRUE ((int)r3) == 0 [L183] COND TRUE ((int)max1) == ((int)id1) [L185] COND TRUE ((int)max2) == ((int)id2) [L187] COND TRUE ((int)max3) == ((int)id3) [L189] COND TRUE ((int)st1) == 0 [L191] COND TRUE ((int)st2) == 0 [L193] COND TRUE ((int)st3) == 0 [L195] COND TRUE ((int)nl1) == 0 [L197] COND TRUE ((int)nl2) == 0 [L199] COND TRUE ((int)nl3) == 0 [L201] COND TRUE ((int)mode1) == 0 [L203] COND TRUE ((int)mode2) == 0 [L205] COND TRUE ((int)mode3) == 0 [L207] init__tmp___5 = 1 [L208] __return_1708 = init__tmp___5 [L209] main__i2 = __return_1708 [L210] COND TRUE main__i2 != 0 [L212] p12_old = nomsg [L213] p12_new = nomsg [L214] p13_old = nomsg [L215] p13_new = nomsg [L216] p21_old = nomsg [L217] p21_new = nomsg [L218] p23_old = nomsg [L219] p23_new = nomsg [L220] p31_old = nomsg [L221] p31_new = nomsg [L222] p32_old = nomsg [L223] p32_new = nomsg [L224] main__i2 = 0 [L225] COND TRUE main__i2 < 6 [L228] COND FALSE !(!(mode1 == 0)) [L234] COND TRUE ((int)r1) < 2 [L236] COND FALSE !(!(ep12 == 0)) [L247] COND FALSE !(!(ep13 == 0)) [L258] mode1 = 1 [L260] COND FALSE !(!(mode2 == 0)) [L266] COND TRUE ((int)r2) < 2 [L268] COND FALSE !(!(ep21 == 0)) [L279] COND FALSE !(!(ep23 == 0)) [L290] mode2 = 1 [L292] COND FALSE !(!(mode3 == 0)) [L298] COND TRUE ((int)r3) < 2 [L300] COND FALSE !(!(ep31 == 0)) [L311] COND FALSE !(!(ep32 == 0)) [L322] mode3 = 1 [L323] p12_old = p12_new [L324] p12_new = nomsg [L325] p13_old = p13_new [L326] p13_new = nomsg [L327] p21_old = p21_new [L328] p21_new = nomsg [L329] p23_old = p23_new [L330] p23_new = nomsg [L331] p31_old = p31_new [L332] p31_new = nomsg [L333] p32_old = p32_new [L334] p32_new = nomsg [L336] int check__tmp; [L337] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L339] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L341] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L343] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L345] COND FALSE !(((int)r1) >= 2) [L351] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L353] COND TRUE ((int)r1) < 2 [L355] COND FALSE !(((int)r1) >= 2) [L361] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L363] COND TRUE ((int)r1) < 2 [L365] check__tmp = 1 [L366] __return_1836 = check__tmp [L367] main__c1 = __return_1836 [L369] _Bool __tmp_1; [L370] __tmp_1 = main__c1 [L371] _Bool assert__arg; [L372] assert__arg = __tmp_1 [L373] COND FALSE !(assert__arg == 0) [L379] int main____CPAchecker_TMP_0 = main__i2; [L380] main__i2 = main__i2 + 1 [L381] COND TRUE main__i2 < 6 [L384] COND TRUE !(mode1 == 0) [L386] r1 = (char)(((int)r1) + 1) [L387] COND FALSE !(!(ep21 == 0)) [L395] COND FALSE !(!(ep31 == 0)) [L403] COND FALSE !(((int)r1) == 2) [L409] mode1 = 0 [L411] COND TRUE !(mode2 == 0) [L413] r2 = (char)(((int)r2) + 1) [L414] COND FALSE !(!(ep12 == 0)) [L422] COND FALSE !(!(ep32 == 0)) [L430] COND FALSE !(((int)r2) == 2) [L436] mode2 = 0 [L438] COND TRUE !(mode3 == 0) [L440] r3 = (char)(((int)r3) + 1) [L441] COND FALSE !(!(ep13 == 0)) [L449] COND FALSE !(!(ep23 == 0)) [L457] COND FALSE !(((int)r3) == 2) [L463] mode3 = 0 [L464] p12_old = p12_new [L465] p12_new = nomsg [L466] p13_old = p13_new [L467] p13_new = nomsg [L468] p21_old = p21_new [L469] p21_new = nomsg [L470] p23_old = p23_new [L471] p23_new = nomsg [L472] p31_old = p31_new [L473] p31_new = nomsg [L474] p32_old = p32_new [L475] p32_new = nomsg [L477] int check__tmp; [L478] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L480] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L482] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L484] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L486] COND FALSE !(((int)r1) >= 2) [L492] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L494] COND TRUE ((int)r1) < 2 [L496] COND FALSE !(((int)r1) >= 2) [L502] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L504] COND TRUE ((int)r1) < 2 [L506] check__tmp = 1 [L507] __return_1954 = check__tmp [L508] main__c1 = __return_1954 [L510] _Bool __tmp_2; [L511] __tmp_2 = main__c1 [L512] _Bool assert__arg; [L513] assert__arg = __tmp_2 [L514] COND FALSE !(assert__arg == 0) [L520] int main____CPAchecker_TMP_0 = main__i2; [L521] main__i2 = main__i2 + 1 [L522] COND TRUE main__i2 < 6 [L525] COND FALSE !(!(mode1 == 0)) [L531] COND TRUE ((int)r1) < 2 [L533] COND FALSE !(!(ep12 == 0)) [L544] COND FALSE !(!(ep13 == 0)) [L555] mode1 = 1 [L557] COND FALSE !(!(mode2 == 0)) [L563] COND TRUE ((int)r2) < 2 [L565] COND FALSE !(!(ep21 == 0)) [L576] COND FALSE !(!(ep23 == 0)) [L587] mode2 = 1 [L589] COND FALSE !(!(mode3 == 0)) [L595] COND TRUE ((int)r3) < 2 [L597] COND FALSE !(!(ep31 == 0)) [L608] COND FALSE !(!(ep32 == 0)) [L619] mode3 = 1 [L620] p12_old = p12_new [L621] p12_new = nomsg [L622] p13_old = p13_new [L623] p13_new = nomsg [L624] p21_old = p21_new [L625] p21_new = nomsg [L626] p23_old = p23_new [L627] p23_new = nomsg [L628] p31_old = p31_new [L629] p31_new = nomsg [L630] p32_old = p32_new [L631] p32_new = nomsg [L633] int check__tmp; [L634] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L636] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L638] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L640] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L642] COND FALSE !(((int)r1) >= 2) [L648] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L650] COND TRUE ((int)r1) < 2 [L652] COND FALSE !(((int)r1) >= 2) [L658] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L660] COND TRUE ((int)r1) < 2 [L662] check__tmp = 1 [L663] __return_2075 = check__tmp [L664] main__c1 = __return_2075 [L666] _Bool __tmp_3; [L667] __tmp_3 = main__c1 [L668] _Bool assert__arg; [L669] assert__arg = __tmp_3 [L670] COND FALSE !(assert__arg == 0) [L676] int main____CPAchecker_TMP_0 = main__i2; [L677] main__i2 = main__i2 + 1 [L678] COND TRUE main__i2 < 6 [L681] COND TRUE !(mode1 == 0) [L683] r1 = (char)(((int)r1) + 1) [L684] COND FALSE !(!(ep21 == 0)) [L692] COND FALSE !(!(ep31 == 0)) [L700] COND TRUE ((int)r1) == 2 [L702] COND TRUE ((int)max1) == ((int)id1) [L704] st1 = 1 [L706] mode1 = 0 [L708] COND TRUE !(mode2 == 0) [L710] r2 = (char)(((int)r2) + 1) [L711] COND FALSE !(!(ep12 == 0)) [L719] COND FALSE !(!(ep32 == 0)) [L727] COND TRUE ((int)r2) == 2 [L729] COND TRUE ((int)max2) == ((int)id2) [L731] st2 = 1 [L733] mode2 = 0 [L735] COND TRUE !(mode3 == 0) [L737] r3 = (char)(((int)r3) + 1) [L738] COND FALSE !(!(ep13 == 0)) [L746] COND FALSE !(!(ep23 == 0)) [L754] COND TRUE ((int)r3) == 2 [L756] COND TRUE ((int)max3) == ((int)id3) [L758] st3 = 1 [L760] mode3 = 0 [L761] p12_old = p12_new [L762] p12_new = nomsg [L763] p13_old = p13_new [L764] p13_new = nomsg [L765] p21_old = p21_new [L766] p21_new = nomsg [L767] p23_old = p23_new [L768] p23_new = nomsg [L769] p31_old = p31_new [L770] p31_new = nomsg [L771] p32_old = p32_new [L772] p32_new = nomsg [L774] int check__tmp; [L775] COND FALSE !(((((int)st1) + ((int)st2)) + ((int)st3)) <= 1) [L1400] check__tmp = 0 [L803] __return_2198 = check__tmp [L804] main__c1 = __return_2198 [L805] __tmp_2199_0 = main____CPAchecker_TMP_0 [L807] main____CPAchecker_TMP_0 = __tmp_2199_0 [L809] _Bool __tmp_4; [L810] __tmp_4 = main__c1 [L811] _Bool assert__arg; [L812] assert__arg = __tmp_4 [L813] COND TRUE assert__arg == 0 [L815] CALL reach_error() [L4] __assert_fail("0", "pals_floodmax.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c", 4, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 312 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 73.7s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 27.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 5348 SDtfs, 5535 SDslu, 3071 SDs, 0 SdLazy, 5895 SolverSat, 117 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 15.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 62 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 6.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=35082occurred 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, 24 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 38.0s InterpolantComputationTime, 1308 NumberOfCodeBlocks, 1308 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 1151 ConstructedInterpolants, 0 QuantifiedInterpolants, 1150412 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...