/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 04:52:02,760 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 04:52:02,763 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 04:52:02,815 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 04:52:02,815 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 04:52:02,822 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 04:52:02,824 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 04:52:02,829 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 04:52:02,832 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 04:52:02,838 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 04:52:02,840 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 04:52:02,841 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 04:52:02,842 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 04:52:02,845 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 04:52:02,848 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 04:52:02,851 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 04:52:02,853 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 04:52:02,856 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 04:52:02,863 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 04:52:02,878 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 04:52:02,880 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 04:52:02,881 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 04:52:02,882 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 04:52:02,885 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 04:52:02,893 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 04:52:02,893 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 04:52:02,894 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 04:52:02,895 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 04:52:02,896 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 04:52:02,897 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 04:52:02,897 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 04:52:02,898 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 04:52:02,900 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 04:52:02,901 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 04:52:02,902 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 04:52:02,902 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 04:52:02,903 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 04:52:02,903 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 04:52:02,904 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 04:52:02,905 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 04:52:02,905 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 04:52:02,913 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 04:52:02,964 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 04:52:02,964 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 04:52:02,968 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 04:52:02,968 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 04:52:02,968 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 04:52:02,969 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 04:52:02,969 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 04:52:02,969 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 04:52:02,969 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 04:52:02,969 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 04:52:02,970 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 04:52:02,971 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 04:52:02,971 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 04:52:02,971 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 04:52:02,971 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 04:52:02,971 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 04:52:02,972 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 04:52:02,972 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 04:52:02,972 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 04:52:02,972 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 04:52:02,972 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 04:52:02,973 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 04:52:02,973 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 04:52:02,973 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 04:52:02,973 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 04:52:02,973 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 04:52:02,973 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 04:52:02,974 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 04:52:02,974 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 04:52:02,974 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 04:52:03,386 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 04:52:03,411 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 04:52:03,414 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 04:52:03,415 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 04:52:03,416 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 04:52:03,417 INFO L432 ainManager$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.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-27 04:52:03,487 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a67fa563c/49296f279b0d4a5894007534d15d0bce/FLAG4a4d2386c [2020-10-27 04:52:04,257 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 04:52:04,258 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-27 04:52:04,278 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a67fa563c/49296f279b0d4a5894007534d15d0bce/FLAG4a4d2386c [2020-10-27 04:52:04,296 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a67fa563c/49296f279b0d4a5894007534d15d0bce [2020-10-27 04:52:04,299 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 04:52:04,305 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 04:52:04,307 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 04:52:04,307 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 04:52:04,311 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 04:52:04,312 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:52:04" (1/1) ... [2020-10-27 04:52:04,315 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68da4ea8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:52:04, skipping insertion in model container [2020-10-27 04:52:04,315 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:52:04" (1/1) ... [2020-10-27 04:52:04,324 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 04:52:04,396 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 04:52:04,858 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 04:52:04,874 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 04:52:05,058 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 04:52:05,095 INFO L208 MainTranslator]: Completed translation [2020-10-27 04:52:05,097 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:52:05 WrapperNode [2020-10-27 04:52:05,097 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 04:52:05,098 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 04:52:05,098 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 04:52:05,099 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 04:52:05,112 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:52:05" (1/1) ... [2020-10-27 04:52:05,114 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:52:05" (1/1) ... [2020-10-27 04:52:05,149 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:52:05" (1/1) ... [2020-10-27 04:52:05,150 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:52:05" (1/1) ... [2020-10-27 04:52:05,210 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:52:05" (1/1) ... [2020-10-27 04:52:05,238 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:52:05" (1/1) ... [2020-10-27 04:52:05,256 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:52:05" (1/1) ... [2020-10-27 04:52:05,271 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 04:52:05,272 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 04:52:05,272 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 04:52:05,272 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 04:52:05,273 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:52:05" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 04:52:05,361 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 04:52:05,361 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 04:52:05,362 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 04:52:05,362 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 04:52:05,363 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 04:52:05,363 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 04:52:05,363 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 04:52:05,363 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 04:52:05,364 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 04:52:05,364 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 04:52:05,365 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-27 04:52:05,365 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 04:52:05,365 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 04:52:05,365 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 04:52:05,366 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 04:52:05,367 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 04:52:05,367 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 04:52:05,367 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 04:52:05,367 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 04:52:05,367 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 04:52:05,367 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 04:52:05,367 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 04:52:05,368 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 04:52:05,368 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 04:52:05,368 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 04:52:05,368 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 04:52:05,368 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 04:52:05,368 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 04:52:06,777 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 04:52:06,777 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-27 04:52:06,780 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:52:06 BoogieIcfgContainer [2020-10-27 04:52:06,780 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 04:52:06,782 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 04:52:06,782 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 04:52:06,786 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 04:52:06,786 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 04:52:04" (1/3) ... [2020-10-27 04:52:06,787 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d478492 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:52:06, skipping insertion in model container [2020-10-27 04:52:06,787 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:52:05" (2/3) ... [2020-10-27 04:52:06,788 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d478492 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:52:06, skipping insertion in model container [2020-10-27 04:52:06,788 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:52:06" (3/3) ... [2020-10-27 04:52:06,789 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-27 04:52:06,801 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 04:52:06,807 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 04:52:06,821 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 04:52:06,851 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 04:52:06,851 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 04:52:06,851 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 04:52:06,851 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 04:52:06,851 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 04:52:06,852 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 04:52:06,852 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 04:52:06,852 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 04:52:06,877 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states. [2020-10-27 04:52:06,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-10-27 04:52:06,894 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:52:06,895 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] [2020-10-27 04:52:06,895 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:52:06,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:52:06,902 INFO L82 PathProgramCache]: Analyzing trace with hash 549860383, now seen corresponding path program 1 times [2020-10-27 04:52:06,911 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:52:06,912 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [936049274] [2020-10-27 04:52:06,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:52:07,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:52:07,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:52:07,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:52:08,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:52:08,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:52:08,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:52:08,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:52:08,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:52:08,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:52:08,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:52:08,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:52:09,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:52:10,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:52:11,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:52:12,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:52:12,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-27 04:52:12,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-27 04:52:12,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5042 [2020-10-27 04:52:12,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:52:12,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:52:12,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:52:12,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-27 04:52:12,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 04:52:12,911 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-27 04:52:12,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:52:12,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:52:12,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:52:12,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:52:12,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:52:12,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:52:12,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 04:52:12,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:52:12,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:52:12,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:52:12,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:52:12,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:52:13,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:52:13,054 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [936049274] [2020-10-27 04:52:13,056 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:52:13,056 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 04:52:13,057 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292416163] [2020-10-27 04:52:13,064 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 04:52:13,064 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:52:13,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 04:52:13,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 04:52:13,089 INFO L87 Difference]: Start difference. First operand 315 states. Second operand 5 states. [2020-10-27 04:52:15,833 WARN L193 SmtUtils]: Spent 367.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-27 04:52:16,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:52:16,758 INFO L93 Difference]: Finished difference Result 902 states and 1588 transitions. [2020-10-27 04:52:16,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 04:52:16,764 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 145 [2020-10-27 04:52:16,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:52:16,783 INFO L225 Difference]: With dead ends: 902 [2020-10-27 04:52:16,784 INFO L226 Difference]: Without dead ends: 590 [2020-10-27 04:52:16,789 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 [2020-10-27 04:52:16,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2020-10-27 04:52:16,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 587. [2020-10-27 04:52:16,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 587 states. [2020-10-27 04:52:16,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 587 states to 587 states and 854 transitions. [2020-10-27 04:52:16,909 INFO L78 Accepts]: Start accepts. Automaton has 587 states and 854 transitions. Word has length 145 [2020-10-27 04:52:16,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:52:16,910 INFO L481 AbstractCegarLoop]: Abstraction has 587 states and 854 transitions. [2020-10-27 04:52:16,910 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 04:52:16,910 INFO L276 IsEmpty]: Start isEmpty. Operand 587 states and 854 transitions. [2020-10-27 04:52:16,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-27 04:52:16,917 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:52:16,918 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] [2020-10-27 04:52:16,918 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 04:52:16,918 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:52:16,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:52:16,919 INFO L82 PathProgramCache]: Analyzing trace with hash -515046789, now seen corresponding path program 1 times [2020-10-27 04:52:16,919 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:52:16,920 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2030058400] [2020-10-27 04:52:16,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:52:16,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:52:16,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:52:17,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:52:17,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:52:17,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:52:17,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:52:17,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:52:17,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:52:17,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:52:17,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:52:17,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:52:18,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:52:21,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:52:21,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-27 04:52:21,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-27 04:52:21,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-27 04:52:21,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:52:21,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:52:21,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:52:21,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-27 04:52:21,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:52:22,382 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-27 04:52:22,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:52:22,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:52:22,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:52:22,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:52:22,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:52:22,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:52:22,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 04:52:22,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:52:22,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:52:22,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:52:22,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:52:22,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:52:22,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:52:22,520 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2030058400] [2020-10-27 04:52:22,520 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:52:22,520 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 04:52:22,521 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363231386] [2020-10-27 04:52:22,522 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 04:52:22,523 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:52:22,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 04:52:22,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 04:52:22,524 INFO L87 Difference]: Start difference. First operand 587 states and 854 transitions. Second operand 5 states. [2020-10-27 04:52:24,501 WARN L193 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-27 04:52:25,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:52:25,366 INFO L93 Difference]: Finished difference Result 1682 states and 2439 transitions. [2020-10-27 04:52:25,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 04:52:25,366 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 146 [2020-10-27 04:52:25,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:52:25,375 INFO L225 Difference]: With dead ends: 1682 [2020-10-27 04:52:25,376 INFO L226 Difference]: Without dead ends: 1120 [2020-10-27 04:52:25,384 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 [2020-10-27 04:52:25,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1120 states. [2020-10-27 04:52:25,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1120 to 1117. [2020-10-27 04:52:25,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1117 states. [2020-10-27 04:52:25,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1117 states to 1117 states and 1606 transitions. [2020-10-27 04:52:25,500 INFO L78 Accepts]: Start accepts. Automaton has 1117 states and 1606 transitions. Word has length 146 [2020-10-27 04:52:25,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:52:25,502 INFO L481 AbstractCegarLoop]: Abstraction has 1117 states and 1606 transitions. [2020-10-27 04:52:25,502 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 04:52:25,503 INFO L276 IsEmpty]: Start isEmpty. Operand 1117 states and 1606 transitions. [2020-10-27 04:52:25,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-10-27 04:52:25,514 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:52:25,514 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] [2020-10-27 04:52:25,515 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 04:52:25,515 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:52:25,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:52:25,515 INFO L82 PathProgramCache]: Analyzing trace with hash 883903901, now seen corresponding path program 1 times [2020-10-27 04:52:25,516 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:52:25,517 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1732080788] [2020-10-27 04:52:25,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:52:25,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:52:25,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:52:25,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:52:25,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:52:25,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:52:25,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:52:25,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:52:25,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:52:25,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:52:26,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:52:26,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:52:26,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:52:28,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:52:28,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:52:28,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:52:30,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:52:30,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-27 04:52:30,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-27 04:52:30,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-27 04:52:30,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:52:30,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:52:30,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:52:30,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-27 04:52:30,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:52:30,973 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-27 04:52:30,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:52:30,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:52:30,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:52:30,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:52:30,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:52:30,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:52:30,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 04:52:30,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:52:30,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:52:30,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:52:30,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:52:30,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:52:31,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:52:31,061 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1732080788] [2020-10-27 04:52:31,061 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:52:31,062 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 04:52:31,062 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95096651] [2020-10-27 04:52:31,062 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 04:52:31,063 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:52:31,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 04:52:31,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 04:52:31,064 INFO L87 Difference]: Start difference. First operand 1117 states and 1606 transitions. Second operand 5 states. [2020-10-27 04:52:33,237 WARN L193 SmtUtils]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-27 04:52:34,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:52:34,144 INFO L93 Difference]: Finished difference Result 3240 states and 4648 transitions. [2020-10-27 04:52:34,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 04:52:34,146 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 147 [2020-10-27 04:52:34,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:52:34,162 INFO L225 Difference]: With dead ends: 3240 [2020-10-27 04:52:34,162 INFO L226 Difference]: Without dead ends: 2159 [2020-10-27 04:52:34,165 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 [2020-10-27 04:52:34,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2159 states. [2020-10-27 04:52:34,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2159 to 2156. [2020-10-27 04:52:34,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2156 states. [2020-10-27 04:52:34,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2156 states to 2156 states and 3065 transitions. [2020-10-27 04:52:34,297 INFO L78 Accepts]: Start accepts. Automaton has 2156 states and 3065 transitions. Word has length 147 [2020-10-27 04:52:34,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:52:34,299 INFO L481 AbstractCegarLoop]: Abstraction has 2156 states and 3065 transitions. [2020-10-27 04:52:34,300 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 04:52:34,300 INFO L276 IsEmpty]: Start isEmpty. Operand 2156 states and 3065 transitions. [2020-10-27 04:52:34,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-27 04:52:34,305 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:52:34,305 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] [2020-10-27 04:52:34,305 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 04:52:34,306 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:52:34,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:52:34,306 INFO L82 PathProgramCache]: Analyzing trace with hash -1142654118, now seen corresponding path program 1 times [2020-10-27 04:52:34,308 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:52:34,308 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [929826454] [2020-10-27 04:52:34,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:52:34,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:52:34,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:52:34,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:52:34,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:52:34,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:52:34,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:52:34,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:52:34,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:52:35,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:52:36,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:52:36,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:52:36,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:52:37,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:52:37,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:52:38,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:52:39,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:52:39,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-27 04:52:39,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-27 04:52:39,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-27 04:52:39,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:52:39,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:52:39,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:52:39,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-27 04:52:39,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-27 04:52:39,898 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-27 04:52:39,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:52:39,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:52:39,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:52:39,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:52:39,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:52:39,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:52:39,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 04:52:39,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:52:39,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:52:39,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:52:39,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:52:39,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:52:39,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:52:39,979 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [929826454] [2020-10-27 04:52:39,979 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:52:39,980 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 04:52:39,980 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433326021] [2020-10-27 04:52:39,980 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 04:52:39,981 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:52:39,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 04:52:39,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 04:52:39,981 INFO L87 Difference]: Start difference. First operand 2156 states and 3065 transitions. Second operand 5 states. [2020-10-27 04:52:42,272 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-27 04:52:43,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:52:43,325 INFO L93 Difference]: Finished difference Result 5746 states and 8197 transitions. [2020-10-27 04:52:43,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 04:52:43,326 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 148 [2020-10-27 04:52:43,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:52:43,346 INFO L225 Difference]: With dead ends: 5746 [2020-10-27 04:52:43,346 INFO L226 Difference]: Without dead ends: 4115 [2020-10-27 04:52:43,352 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 [2020-10-27 04:52:43,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4115 states. [2020-10-27 04:52:43,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4115 to 4112. [2020-10-27 04:52:43,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4112 states. [2020-10-27 04:52:43,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4112 states to 4112 states and 5765 transitions. [2020-10-27 04:52:43,628 INFO L78 Accepts]: Start accepts. Automaton has 4112 states and 5765 transitions. Word has length 148 [2020-10-27 04:52:43,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:52:43,628 INFO L481 AbstractCegarLoop]: Abstraction has 4112 states and 5765 transitions. [2020-10-27 04:52:43,628 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 04:52:43,629 INFO L276 IsEmpty]: Start isEmpty. Operand 4112 states and 5765 transitions. [2020-10-27 04:52:43,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-10-27 04:52:43,636 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:52:43,636 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] [2020-10-27 04:52:43,637 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 04:52:43,637 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:52:43,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:52:43,638 INFO L82 PathProgramCache]: Analyzing trace with hash 1718274365, now seen corresponding path program 1 times [2020-10-27 04:52:43,638 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:52:43,638 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [127143229] [2020-10-27 04:52:43,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:52:43,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:52:43,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:52:43,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:52:43,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:52:43,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:52:43,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:52:44,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:52:44,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:52:44,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:52:46,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:52:47,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:52:47,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:52:48,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:52:48,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-10-27 04:52:48,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-27 04:52:48,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-27 04:52:48,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:52:48,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:52:48,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:52:48,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-27 04:52:48,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:52:49,158 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-27 04:52:49,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:52:49,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:52:49,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:52:49,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:52:49,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:52:49,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:52:49,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 04:52:49,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:52:49,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:52:49,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:52:49,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:52:49,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-27 04:52:49,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:52:49,262 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [127143229] [2020-10-27 04:52:49,262 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:52:49,262 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 04:52:49,262 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629142456] [2020-10-27 04:52:49,263 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 04:52:49,263 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:52:49,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 04:52:49,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 04:52:49,265 INFO L87 Difference]: Start difference. First operand 4112 states and 5765 transitions. Second operand 5 states. [2020-10-27 04:52:51,723 WARN L193 SmtUtils]: Spent 368.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-27 04:52:52,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:52:52,855 INFO L93 Difference]: Finished difference Result 11884 states and 16583 transitions. [2020-10-27 04:52:52,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 04:52:52,856 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 149 [2020-10-27 04:52:52,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:52:52,895 INFO L225 Difference]: With dead ends: 11884 [2020-10-27 04:52:52,895 INFO L226 Difference]: Without dead ends: 7913 [2020-10-27 04:52:52,904 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 [2020-10-27 04:52:52,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7913 states. [2020-10-27 04:52:53,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7913 to 7910. [2020-10-27 04:52:53,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7910 states. [2020-10-27 04:52:53,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7910 states to 7910 states and 10935 transitions. [2020-10-27 04:52:53,464 INFO L78 Accepts]: Start accepts. Automaton has 7910 states and 10935 transitions. Word has length 149 [2020-10-27 04:52:53,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:52:53,464 INFO L481 AbstractCegarLoop]: Abstraction has 7910 states and 10935 transitions. [2020-10-27 04:52:53,464 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 04:52:53,464 INFO L276 IsEmpty]: Start isEmpty. Operand 7910 states and 10935 transitions. [2020-10-27 04:52:53,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-10-27 04:52:53,477 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:52:53,477 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:52:53,478 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 04:52:53,478 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:52:53,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:52:53,478 INFO L82 PathProgramCache]: Analyzing trace with hash 974322522, now seen corresponding path program 1 times [2020-10-27 04:52:53,479 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:52:53,479 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [612506163] [2020-10-27 04:52:53,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:52:53,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:52:53,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:52:53,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:52:53,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:52:53,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:52:53,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:52:54,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:52:54,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:52:54,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:52:54,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:52:54,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:52:55,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:52:58,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:52:58,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-27 04:52:58,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-27 04:52:58,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-27 04:52:58,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:52:58,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:52:58,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:52:58,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-27 04:52:58,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:52:58,947 WARN L193 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-27 04:52:58,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:52:58,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:52:58,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:52:58,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:52:58,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:52:58,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:52:58,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 04:52:58,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:52:58,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:52:58,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:52:58,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:52:58,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:52:59,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:52:59,022 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [612506163] [2020-10-27 04:52:59,023 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:52:59,023 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 04:52:59,023 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845432816] [2020-10-27 04:52:59,024 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 04:52:59,024 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:52:59,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 04:52:59,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 04:52:59,024 INFO L87 Difference]: Start difference. First operand 7910 states and 10935 transitions. Second operand 5 states. [2020-10-27 04:53:01,407 WARN L193 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-27 04:53:02,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:53:02,541 INFO L93 Difference]: Finished difference Result 22836 states and 31381 transitions. [2020-10-27 04:53:02,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 04:53:02,542 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 150 [2020-10-27 04:53:02,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:53:02,603 INFO L225 Difference]: With dead ends: 22836 [2020-10-27 04:53:02,603 INFO L226 Difference]: Without dead ends: 15149 [2020-10-27 04:53:02,622 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 [2020-10-27 04:53:02,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15149 states. [2020-10-27 04:53:03,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15149 to 15146. [2020-10-27 04:53:03,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15146 states. [2020-10-27 04:53:03,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15146 states to 15146 states and 20567 transitions. [2020-10-27 04:53:03,699 INFO L78 Accepts]: Start accepts. Automaton has 15146 states and 20567 transitions. Word has length 150 [2020-10-27 04:53:03,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:53:03,699 INFO L481 AbstractCegarLoop]: Abstraction has 15146 states and 20567 transitions. [2020-10-27 04:53:03,699 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 04:53:03,699 INFO L276 IsEmpty]: Start isEmpty. Operand 15146 states and 20567 transitions. [2020-10-27 04:53:03,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-10-27 04:53:03,725 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:53:03,725 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:53:03,725 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 04:53:03,726 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:53:03,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:53:03,726 INFO L82 PathProgramCache]: Analyzing trace with hash -1903940196, now seen corresponding path program 1 times [2020-10-27 04:53:03,726 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:53:03,727 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [978752174] [2020-10-27 04:53:03,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:53:03,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:53:03,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:03,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:03,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:03,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:03,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:04,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:06,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:53:06,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-10-27 04:53:06,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 04:53:06,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3092 [2020-10-27 04:53:06,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:53:06,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:53:06,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-27 04:53:06,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-27 04:53:06,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:53:07,236 WARN L193 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-27 04:53:07,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:53:07,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:53:07,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:07,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:53:07,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:53:07,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:53:07,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 04:53:07,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:53:07,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:53:07,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:53:07,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:53:07,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:53:07,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:53:07,279 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [978752174] [2020-10-27 04:53:07,279 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:53:07,279 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 04:53:07,279 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726915196] [2020-10-27 04:53:07,280 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 04:53:07,280 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:53:07,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 04:53:07,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 04:53:07,281 INFO L87 Difference]: Start difference. First operand 15146 states and 20567 transitions. Second operand 4 states. [2020-10-27 04:53:07,644 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-10-27 04:53:09,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:53:09,982 INFO L93 Difference]: Finished difference Result 29424 states and 41835 transitions. [2020-10-27 04:53:09,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 04:53:09,983 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 151 [2020-10-27 04:53:09,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:53:10,031 INFO L225 Difference]: With dead ends: 29424 [2020-10-27 04:53:10,032 INFO L226 Difference]: Without dead ends: 23277 [2020-10-27 04:53:10,053 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 04:53:10,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23277 states. [2020-10-27 04:53:11,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23277 to 23274. [2020-10-27 04:53:11,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23274 states. [2020-10-27 04:53:11,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23274 states to 23274 states and 32039 transitions. [2020-10-27 04:53:11,758 INFO L78 Accepts]: Start accepts. Automaton has 23274 states and 32039 transitions. Word has length 151 [2020-10-27 04:53:11,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:53:11,758 INFO L481 AbstractCegarLoop]: Abstraction has 23274 states and 32039 transitions. [2020-10-27 04:53:11,758 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 04:53:11,758 INFO L276 IsEmpty]: Start isEmpty. Operand 23274 states and 32039 transitions. [2020-10-27 04:53:11,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-10-27 04:53:11,793 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:53:11,793 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:53:11,793 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 04:53:11,793 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:53:11,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:53:11,794 INFO L82 PathProgramCache]: Analyzing trace with hash 92374024, now seen corresponding path program 1 times [2020-10-27 04:53:11,794 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:53:11,794 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1411306303] [2020-10-27 04:53:11,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:53:11,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:53:11,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:11,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:53:11,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-10-27 04:53:11,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:53:11,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-10-27 04:53:11,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:53:11,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:53:11,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-27 04:53:11,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-27 04:53:11,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:53:12,354 WARN L193 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-27 04:53:12,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:53:12,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:53:12,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:12,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:53:12,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:53:12,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:53:12,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 04:53:12,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:53:12,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:53:12,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:53:12,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:53:12,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:53:12,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:53:12,410 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1411306303] [2020-10-27 04:53:12,410 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:53:12,410 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 04:53:12,410 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167564878] [2020-10-27 04:53:12,411 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 04:53:12,411 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:53:12,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 04:53:12,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 04:53:12,412 INFO L87 Difference]: Start difference. First operand 23274 states and 32039 transitions. Second operand 4 states. [2020-10-27 04:53:12,770 WARN L193 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-10-27 04:53:16,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:53:16,227 INFO L93 Difference]: Finished difference Result 45656 states and 65527 transitions. [2020-10-27 04:53:16,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 04:53:16,228 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 151 [2020-10-27 04:53:16,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:53:16,301 INFO L225 Difference]: With dead ends: 45656 [2020-10-27 04:53:16,302 INFO L226 Difference]: Without dead ends: 36613 [2020-10-27 04:53:16,327 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 04:53:16,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36613 states. [2020-10-27 04:53:18,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36613 to 36610. [2020-10-27 04:53:18,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36610 states. [2020-10-27 04:53:18,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36610 states to 36610 states and 50819 transitions. [2020-10-27 04:53:18,757 INFO L78 Accepts]: Start accepts. Automaton has 36610 states and 50819 transitions. Word has length 151 [2020-10-27 04:53:18,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:53:18,757 INFO L481 AbstractCegarLoop]: Abstraction has 36610 states and 50819 transitions. [2020-10-27 04:53:18,757 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 04:53:18,757 INFO L276 IsEmpty]: Start isEmpty. Operand 36610 states and 50819 transitions. [2020-10-27 04:53:18,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-10-27 04:53:18,795 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:53:18,796 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:53:18,796 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 04:53:18,796 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:53:18,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:53:18,797 INFO L82 PathProgramCache]: Analyzing trace with hash -1495292190, now seen corresponding path program 1 times [2020-10-27 04:53:18,797 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:53:18,797 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1626138173] [2020-10-27 04:53:18,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:53:18,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-27 04:53:18,838 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-27 04:53:18,839 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-27 04:53:18,843 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 04:53:18,889 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 04:53:18 BoogieIcfgContainer [2020-10-27 04:53:18,890 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-27 04:53:18,891 INFO L168 Benchmark]: Toolchain (without parser) took 74590.20 ms. Allocated memory was 151.0 MB in the beginning and 1.8 GB in the end (delta: 1.6 GB). Free memory was 124.6 MB in the beginning and 1.5 GB in the end (delta: -1.4 GB). Peak memory consumption was 242.9 MB. Max. memory is 8.0 GB. [2020-10-27 04:53:18,892 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 151.0 MB. Free memory is still 122.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 04:53:18,893 INFO L168 Benchmark]: CACSL2BoogieTranslator took 790.63 ms. Allocated memory is still 151.0 MB. Free memory was 124.0 MB in the beginning and 97.8 MB in the end (delta: 26.1 MB). Peak memory consumption was 26.2 MB. Max. memory is 8.0 GB. [2020-10-27 04:53:18,893 INFO L168 Benchmark]: Boogie Preprocessor took 172.73 ms. Allocated memory is still 151.0 MB. Free memory was 97.8 MB in the beginning and 130.3 MB in the end (delta: -32.5 MB). Peak memory consumption was 5.7 MB. Max. memory is 8.0 GB. [2020-10-27 04:53:18,894 INFO L168 Benchmark]: RCFGBuilder took 1508.37 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 130.3 MB in the beginning and 118.1 MB in the end (delta: 12.2 MB). Peak memory consumption was 85.1 MB. Max. memory is 8.0 GB. [2020-10-27 04:53:18,895 INFO L168 Benchmark]: TraceAbstraction took 72107.81 ms. Allocated memory was 181.4 MB in the beginning and 1.8 GB in the end (delta: 1.6 GB). Free memory was 117.6 MB in the beginning and 1.5 GB in the end (delta: -1.4 GB). Peak memory consumption was 204.6 MB. Max. memory is 8.0 GB. [2020-10-27 04:53:18,898 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 151.0 MB. Free memory is still 122.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 790.63 ms. Allocated memory is still 151.0 MB. Free memory was 124.0 MB in the beginning and 97.8 MB in the end (delta: 26.1 MB). Peak memory consumption was 26.2 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 172.73 ms. Allocated memory is still 151.0 MB. Free memory was 97.8 MB in the beginning and 130.3 MB in the end (delta: -32.5 MB). Peak memory consumption was 5.7 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1508.37 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 130.3 MB in the beginning and 118.1 MB in the end (delta: 12.2 MB). Peak memory consumption was 85.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 72107.81 ms. Allocated memory was 181.4 MB in the beginning and 1.8 GB in the end (delta: 1.6 GB). Free memory was 117.6 MB in the beginning and 1.5 GB in the end (delta: -1.4 GB). Peak memory consumption was 204.6 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; [L17] msg_t nomsg = (msg_t )-1; [L18] port_t p12 = 0; [L19] char p12_old = '\x0'; [L20] char p12_new = '\x0'; [L21] _Bool ep12 = 0; [L22] port_t p13 = 0; [L23] char p13_old = '\x0'; [L24] char p13_new = '\x0'; [L25] _Bool ep13 = 0; [L26] port_t p21 = 0; [L27] char p21_old = '\x0'; [L28] char p21_new = '\x0'; [L29] _Bool ep21 = 0; [L30] port_t p23 = 0; [L31] char p23_old = '\x0'; [L32] char p23_new = '\x0'; [L33] _Bool ep23 = 0; [L34] port_t p31 = 0; [L35] char p31_old = '\x0'; [L36] char p31_new = '\x0'; [L37] _Bool ep31 = 0; [L38] port_t p32 = 0; [L39] char p32_old = '\x0'; [L40] char p32_new = '\x0'; [L41] _Bool ep32 = 0; [L42] char id1 = '\x0'; [L43] unsigned char r1 = '\x0'; [L44] char st1 = '\x0'; [L45] char nl1 = '\x0'; [L46] char m1 = '\x0'; [L47] char max1 = '\x0'; [L48] _Bool mode1 = 0; [L49] char id2 = '\x0'; [L50] unsigned char r2 = '\x0'; [L51] char st2 = '\x0'; [L52] char nl2 = '\x0'; [L53] char m2 = '\x0'; [L54] char max2 = '\x0'; [L55] _Bool mode2 = 0; [L56] char id3 = '\x0'; [L57] unsigned char r3 = '\x0'; [L58] char st3 = '\x0'; [L59] char nl3 = '\x0'; [L60] char m3 = '\x0'; [L61] char max3 = '\x0'; [L62] _Bool mode3 = 0; [L66] void (*nodes[3])() = { &node1, &node2, &node3 }; [L70] int __return_1718; [L71] int __return_1846; [L72] int __return_1964; [L73] int __return_2082; [L74] int __return_2205; [L75] int __return_2315; [L78] int main__c1; [L79] int main__i2; [L80] main__c1 = 0 [L81] ep12 = __VERIFIER_nondet_bool() [L82] ep13 = __VERIFIER_nondet_bool() [L83] ep21 = __VERIFIER_nondet_bool() [L84] ep23 = __VERIFIER_nondet_bool() [L85] ep31 = __VERIFIER_nondet_bool() [L86] ep32 = __VERIFIER_nondet_bool() [L87] id1 = __VERIFIER_nondet_char() [L88] r1 = __VERIFIER_nondet_uchar() [L89] st1 = __VERIFIER_nondet_char() [L90] nl1 = __VERIFIER_nondet_char() [L91] m1 = __VERIFIER_nondet_char() [L92] max1 = __VERIFIER_nondet_char() [L93] mode1 = __VERIFIER_nondet_bool() [L94] id2 = __VERIFIER_nondet_char() [L95] r2 = __VERIFIER_nondet_uchar() [L96] st2 = __VERIFIER_nondet_char() [L97] nl2 = __VERIFIER_nondet_char() [L98] m2 = __VERIFIER_nondet_char() [L99] max2 = __VERIFIER_nondet_char() [L100] mode2 = __VERIFIER_nondet_bool() [L101] id3 = __VERIFIER_nondet_char() [L102] r3 = __VERIFIER_nondet_uchar() [L103] st3 = __VERIFIER_nondet_char() [L104] nl3 = __VERIFIER_nondet_char() [L105] m3 = __VERIFIER_nondet_char() [L106] max3 = __VERIFIER_nondet_char() [L107] mode3 = __VERIFIER_nondet_bool() [L109] _Bool init__r121; [L110] _Bool init__r131; [L111] _Bool init__r211; [L112] _Bool init__r231; [L113] _Bool init__r311; [L114] _Bool init__r321; [L115] _Bool init__r122; [L116] int init__tmp; [L117] _Bool init__r132; [L118] int init__tmp___0; [L119] _Bool init__r212; [L120] int init__tmp___1; [L121] _Bool init__r232; [L122] int init__tmp___2; [L123] _Bool init__r312; [L124] int init__tmp___3; [L125] _Bool init__r322; [L126] int init__tmp___4; [L127] int init__tmp___5; [L128] init__r121 = ep12 [L129] init__r131 = ep13 [L130] init__r211 = ep21 [L131] init__r231 = ep23 [L132] init__r311 = ep31 [L133] init__r321 = ep32 [L134] COND FALSE !(!(init__r121 == 0)) [L2246] COND FALSE !(!(init__r131 == 0)) [L2262] init__tmp = 0 [L138] init__r122 = (_Bool)init__tmp [L139] COND FALSE !(!(init__r131 == 0)) [L2223] COND FALSE !(!(init__r121 == 0)) [L2239] init__tmp___0 = 0 [L143] init__r132 = (_Bool)init__tmp___0 [L144] COND FALSE !(!(init__r211 == 0)) [L2200] COND FALSE !(!(init__r231 == 0)) [L2216] init__tmp___1 = 0 [L148] init__r212 = (_Bool)init__tmp___1 [L149] COND FALSE !(!(init__r231 == 0)) [L2177] COND FALSE !(!(init__r211 == 0)) [L2193] init__tmp___2 = 0 [L153] init__r232 = (_Bool)init__tmp___2 [L154] COND FALSE !(!(init__r311 == 0)) [L2154] COND FALSE !(!(init__r321 == 0)) [L2170] init__tmp___3 = 0 [L158] init__r312 = (_Bool)init__tmp___3 [L159] COND FALSE !(!(init__r321 == 0)) [L2131] COND FALSE !(!(init__r311 == 0)) [L2147] init__tmp___4 = 0 [L163] init__r322 = (_Bool)init__tmp___4 [L164] COND TRUE ((int)id1) != ((int)id2) [L166] COND TRUE ((int)id1) != ((int)id3) [L168] COND TRUE ((int)id2) != ((int)id3) [L170] COND TRUE ((int)id1) >= 0 [L172] COND TRUE ((int)id2) >= 0 [L174] COND TRUE ((int)id3) >= 0 [L176] COND TRUE ((int)r1) == 0 [L178] COND TRUE ((int)r2) == 0 [L180] COND TRUE ((int)r3) == 0 [L182] COND TRUE ((int)max1) == ((int)id1) [L184] COND TRUE ((int)max2) == ((int)id2) [L186] COND TRUE ((int)max3) == ((int)id3) [L188] COND TRUE ((int)st1) == 0 [L190] COND TRUE ((int)st2) == 0 [L192] COND TRUE ((int)st3) == 0 [L194] COND TRUE ((int)nl1) == 0 [L196] COND TRUE ((int)nl2) == 0 [L198] COND TRUE ((int)nl3) == 0 [L200] COND TRUE ((int)mode1) == 0 [L202] COND TRUE ((int)mode2) == 0 [L204] COND TRUE ((int)mode3) == 0 [L206] init__tmp___5 = 1 [L207] __return_1718 = init__tmp___5 [L208] main__i2 = __return_1718 [L209] COND TRUE main__i2 != 0 [L211] p12_old = nomsg [L212] p12_new = nomsg [L213] p13_old = nomsg [L214] p13_new = nomsg [L215] p21_old = nomsg [L216] p21_new = nomsg [L217] p23_old = nomsg [L218] p23_new = nomsg [L219] p31_old = nomsg [L220] p31_new = nomsg [L221] p32_old = nomsg [L222] p32_new = nomsg [L223] main__i2 = 0 [L225] COND FALSE !(!(mode1 == 0)) [L231] COND TRUE ((int)r1) < 2 [L233] COND FALSE !(!(ep12 == 0)) [L244] COND FALSE !(!(ep13 == 0)) [L255] mode1 = 1 [L257] COND FALSE !(!(mode2 == 0)) [L263] COND TRUE ((int)r2) < 2 [L265] COND FALSE !(!(ep21 == 0)) [L276] COND FALSE !(!(ep23 == 0)) [L287] mode2 = 1 [L289] COND FALSE !(!(mode3 == 0)) [L295] COND TRUE ((int)r3) < 2 [L297] COND FALSE !(!(ep31 == 0)) [L308] COND FALSE !(!(ep32 == 0)) [L319] mode3 = 1 [L320] p12_old = p12_new [L321] p12_new = nomsg [L322] p13_old = p13_new [L323] p13_new = nomsg [L324] p21_old = p21_new [L325] p21_new = nomsg [L326] p23_old = p23_new [L327] p23_new = nomsg [L328] p31_old = p31_new [L329] p31_new = nomsg [L330] p32_old = p32_new [L331] p32_new = nomsg [L333] int check__tmp; [L334] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L336] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L338] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L340] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L342] COND FALSE !(((int)r1) >= 2) [L348] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L350] COND TRUE ((int)r1) < 2 [L352] COND FALSE !(((int)r1) >= 2) [L358] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L360] COND TRUE ((int)r1) < 2 [L362] check__tmp = 1 [L363] __return_1846 = check__tmp [L364] main__c1 = __return_1846 [L366] _Bool __tmp_1; [L367] __tmp_1 = main__c1 [L368] _Bool assert__arg; [L369] assert__arg = __tmp_1 [L370] COND FALSE !(assert__arg == 0) [L377] COND TRUE !(mode1 == 0) [L379] COND FALSE !(r1 == 255) [L385] r1 = r1 + 1 [L386] COND FALSE !(!(ep21 == 0)) [L394] COND FALSE !(!(ep31 == 0)) [L402] COND FALSE !(((int)r1) == 2) [L408] mode1 = 0 [L410] COND TRUE !(mode2 == 0) [L412] COND FALSE !(r2 == 255) [L418] r2 = r2 + 1 [L419] COND FALSE !(!(ep12 == 0)) [L427] COND FALSE !(!(ep32 == 0)) [L435] COND FALSE !(((int)r2) == 2) [L441] mode2 = 0 [L443] COND TRUE !(mode3 == 0) [L445] COND FALSE !(r3 == 255) [L451] r3 = r3 + 1 [L452] COND FALSE !(!(ep13 == 0)) [L460] COND FALSE !(!(ep23 == 0)) [L468] COND FALSE !(((int)r3) == 2) [L474] mode3 = 0 [L475] p12_old = p12_new [L476] p12_new = nomsg [L477] p13_old = p13_new [L478] p13_new = nomsg [L479] p21_old = p21_new [L480] p21_new = nomsg [L481] p23_old = p23_new [L482] p23_new = nomsg [L483] p31_old = p31_new [L484] p31_new = nomsg [L485] p32_old = p32_new [L486] p32_new = nomsg [L488] int check__tmp; [L489] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L491] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L493] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L495] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L497] COND FALSE !(((int)r1) >= 2) [L503] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L505] COND TRUE ((int)r1) < 2 [L507] COND FALSE !(((int)r1) >= 2) [L513] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L515] COND TRUE ((int)r1) < 2 [L517] check__tmp = 1 [L518] __return_1964 = check__tmp [L519] main__c1 = __return_1964 [L521] _Bool __tmp_2; [L522] __tmp_2 = main__c1 [L523] _Bool assert__arg; [L524] assert__arg = __tmp_2 [L525] COND FALSE !(assert__arg == 0) [L532] COND FALSE !(!(mode1 == 0)) [L538] COND TRUE ((int)r1) < 2 [L540] COND FALSE !(!(ep12 == 0)) [L551] COND FALSE !(!(ep13 == 0)) [L562] mode1 = 1 [L564] COND FALSE !(!(mode2 == 0)) [L570] COND TRUE ((int)r2) < 2 [L572] COND FALSE !(!(ep21 == 0)) [L583] COND FALSE !(!(ep23 == 0)) [L594] mode2 = 1 [L596] COND FALSE !(!(mode3 == 0)) [L602] COND TRUE ((int)r3) < 2 [L604] COND FALSE !(!(ep31 == 0)) [L615] COND FALSE !(!(ep32 == 0)) [L626] mode3 = 1 [L627] p12_old = p12_new [L628] p12_new = nomsg [L629] p13_old = p13_new [L630] p13_new = nomsg [L631] p21_old = p21_new [L632] p21_new = nomsg [L633] p23_old = p23_new [L634] p23_new = nomsg [L635] p31_old = p31_new [L636] p31_new = nomsg [L637] p32_old = p32_new [L638] p32_new = nomsg [L640] int check__tmp; [L641] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L643] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L645] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L647] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L649] COND FALSE !(((int)r1) >= 2) [L655] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L657] COND TRUE ((int)r1) < 2 [L659] COND FALSE !(((int)r1) >= 2) [L665] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L667] COND TRUE ((int)r1) < 2 [L669] check__tmp = 1 [L670] __return_2082 = check__tmp [L671] main__c1 = __return_2082 [L673] _Bool __tmp_3; [L674] __tmp_3 = main__c1 [L675] _Bool assert__arg; [L676] assert__arg = __tmp_3 [L677] COND FALSE !(assert__arg == 0) [L684] COND TRUE !(mode1 == 0) [L686] COND FALSE !(r1 == 255) [L692] r1 = r1 + 1 [L693] COND FALSE !(!(ep21 == 0)) [L701] COND FALSE !(!(ep31 == 0)) [L709] COND TRUE ((int)r1) == 2 [L711] COND TRUE ((int)max1) == ((int)id1) [L713] st1 = 1 [L715] mode1 = 0 [L717] COND TRUE !(mode2 == 0) [L719] COND FALSE !(r2 == 255) [L725] r2 = r2 + 1 [L726] COND FALSE !(!(ep12 == 0)) [L734] COND FALSE !(!(ep32 == 0)) [L742] COND TRUE ((int)r2) == 2 [L744] COND TRUE ((int)max2) == ((int)id2) [L746] st2 = 1 [L748] mode2 = 0 [L750] COND TRUE !(mode3 == 0) [L752] COND FALSE !(r3 == 255) [L758] r3 = r3 + 1 [L759] COND FALSE !(!(ep13 == 0)) [L767] COND FALSE !(!(ep23 == 0)) [L775] COND TRUE ((int)r3) == 2 [L777] COND TRUE ((int)max3) == ((int)id3) [L779] st3 = 1 [L781] mode3 = 0 [L782] p12_old = p12_new [L783] p12_new = nomsg [L784] p13_old = p13_new [L785] p13_new = nomsg [L786] p21_old = p21_new [L787] p21_new = nomsg [L788] p23_old = p23_new [L789] p23_new = nomsg [L790] p31_old = p31_new [L791] p31_new = nomsg [L792] p32_old = p32_new [L793] p32_new = nomsg [L795] int check__tmp; [L796] COND FALSE !(((((int)st1) + ((int)st2)) + ((int)st3)) <= 1) [L1435] check__tmp = 0 [L824] __return_2205 = check__tmp [L825] main__c1 = __return_2205 [L828] _Bool __tmp_4; [L829] __tmp_4 = main__c1 [L830] _Bool assert__arg; [L831] assert__arg = __tmp_4 [L832] COND TRUE assert__arg == 0 [L834] CALL reach_error() [L4] __assert_fail("0", "pals_floodmax.3.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c", 4, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 319 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 71.9s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 26.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 5553 SDtfs, 5884 SDslu, 3196 SDs, 0 SdLazy, 6098 SolverSat, 120 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 15.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 62 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 5.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=36610occurred 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: 6.3s AutomataMinimizationTime, 8 MinimizatonAttempts, 24 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 37.2s InterpolantComputationTime, 1338 NumberOfCodeBlocks, 1338 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 1179 ConstructedInterpolants, 0 QuantifiedInterpolants, 1028412 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...