/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-15 02:54:04,207 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 02:54:04,211 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 02:54:04,251 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 02:54:04,252 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 02:54:04,260 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 02:54:04,262 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 02:54:04,265 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 02:54:04,267 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 02:54:04,270 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 02:54:04,271 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 02:54:04,272 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 02:54:04,272 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 02:54:04,276 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 02:54:04,278 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 02:54:04,279 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 02:54:04,281 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 02:54:04,282 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 02:54:04,283 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 02:54:04,291 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 02:54:04,294 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 02:54:04,295 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 02:54:04,295 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 02:54:04,296 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 02:54:04,313 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 02:54:04,314 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 02:54:04,314 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 02:54:04,315 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 02:54:04,318 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 02:54:04,319 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 02:54:04,320 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 02:54:04,320 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 02:54:04,321 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 02:54:04,324 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 02:54:04,325 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 02:54:04,325 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 02:54:04,326 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 02:54:04,326 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 02:54:04,327 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 02:54:04,327 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 02:54:04,329 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 02:54:04,329 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-15 02:54:04,365 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 02:54:04,365 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 02:54:04,367 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 02:54:04,368 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 02:54:04,368 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 02:54:04,368 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 02:54:04,369 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 02:54:04,369 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 02:54:04,369 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 02:54:04,369 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 02:54:04,370 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 02:54:04,370 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 02:54:04,370 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 02:54:04,371 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 02:54:04,371 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 02:54:04,371 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 02:54:04,371 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 02:54:04,372 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 02:54:04,372 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 02:54:04,372 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 02:54:04,372 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 02:54:04,373 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 02:54:04,373 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 02:54:04,373 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 02:54:04,373 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 02:54:04,373 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 02:54:04,373 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 02:54:04,374 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 02:54:04,374 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 02:54:04,374 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-15 02:54:04,694 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 02:54:04,715 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 02:54:04,720 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 02:54:04,722 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 02:54:04,722 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 02:54:04,723 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-10-15 02:54:04,780 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/296b19ce6/6437da97046b433a8099ccdf506b68c7/FLAG2dfc763e2 [2020-10-15 02:54:05,343 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 02:54:05,344 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-10-15 02:54:05,356 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/296b19ce6/6437da97046b433a8099ccdf506b68c7/FLAG2dfc763e2 [2020-10-15 02:54:05,643 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/296b19ce6/6437da97046b433a8099ccdf506b68c7 [2020-10-15 02:54:05,652 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 02:54:05,654 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-15 02:54:05,655 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 02:54:05,655 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 02:54:05,658 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 02:54:05,659 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 02:54:05" (1/1) ... [2020-10-15 02:54:05,661 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@284e4e1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:54:05, skipping insertion in model container [2020-10-15 02:54:05,662 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 02:54:05" (1/1) ... [2020-10-15 02:54:05,667 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 02:54:05,734 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 02:54:06,312 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 02:54:06,332 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 02:54:06,827 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 02:54:06,855 INFO L208 MainTranslator]: Completed translation [2020-10-15 02:54:06,857 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:54:06 WrapperNode [2020-10-15 02:54:06,857 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 02:54:06,858 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 02:54:06,858 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 02:54:06,858 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 02:54:06,870 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:54:06" (1/1) ... [2020-10-15 02:54:06,871 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:54:06" (1/1) ... [2020-10-15 02:54:06,891 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:54:06" (1/1) ... [2020-10-15 02:54:06,892 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:54:06" (1/1) ... [2020-10-15 02:54:06,928 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:54:06" (1/1) ... [2020-10-15 02:54:06,957 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:54:06" (1/1) ... [2020-10-15 02:54:06,967 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:54:06" (1/1) ... [2020-10-15 02:54:06,978 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 02:54:06,979 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 02:54:06,979 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 02:54:06,979 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 02:54:06,980 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:54:06" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 02:54:07,059 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-15 02:54:07,059 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 02:54:07,059 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-15 02:54:07,059 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-15 02:54:07,060 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-15 02:54:07,060 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-15 02:54:07,060 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-15 02:54:07,060 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-15 02:54:07,060 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-15 02:54:07,061 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-15 02:54:07,061 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-15 02:54:07,061 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-15 02:54:07,061 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-15 02:54:07,061 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-15 02:54:07,062 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-15 02:54:07,062 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-15 02:54:07,062 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-15 02:54:07,062 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-15 02:54:07,062 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-15 02:54:07,063 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 02:54:08,556 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 02:54:08,556 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-15 02:54:08,564 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 02:54:08 BoogieIcfgContainer [2020-10-15 02:54:08,564 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 02:54:08,566 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 02:54:08,566 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 02:54:08,569 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 02:54:08,570 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 02:54:05" (1/3) ... [2020-10-15 02:54:08,571 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2199040b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 02:54:08, skipping insertion in model container [2020-10-15 02:54:08,571 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:54:06" (2/3) ... [2020-10-15 02:54:08,572 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2199040b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 02:54:08, skipping insertion in model container [2020-10-15 02:54:08,572 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 02:54:08" (3/3) ... [2020-10-15 02:54:08,574 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-10-15 02:54:08,586 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-15 02:54:08,594 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-10-15 02:54:08,609 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-15 02:54:08,639 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-15 02:54:08,639 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-15 02:54:08,640 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-15 02:54:08,640 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 02:54:08,640 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 02:54:08,640 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-15 02:54:08,640 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 02:54:08,640 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 02:54:08,673 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states. [2020-10-15 02:54:08,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-10-15 02:54:08,691 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:54:08,692 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] [2020-10-15 02:54:08,693 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:54:08,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:54:08,700 INFO L82 PathProgramCache]: Analyzing trace with hash -1152927299, now seen corresponding path program 1 times [2020-10-15 02:54:08,709 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:54:08,710 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1807075234] [2020-10-15 02:54:08,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:54:09,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:54:09,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:54:09,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:54:09,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:54:10,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:54:10,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:54:10,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:54:10,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:54:10,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:54:10,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:54:11,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:54:11,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:54:12,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:54:14,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:54:14,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-15 02:54:14,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-15 02:54:14,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-15 02:54:14,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:54:14,253 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:54:14,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 02:54:14,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-15 02:54:14,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-15 02:54:14,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-15 02:54:14,749 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-15 02:54:14,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:54:14,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:54:14,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:54:14,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:54:14,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:54:14,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:54:14,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-15 02:54:14,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:54:14,797 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:54:14,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:54:14,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:54:14,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:54:14,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:54:14,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 02:54:14,901 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1807075234] [2020-10-15 02:54:14,903 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 02:54:14,903 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 02:54:14,904 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669142933] [2020-10-15 02:54:14,911 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 02:54:14,912 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:54:14,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 02:54:14,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 02:54:14,930 INFO L87 Difference]: Start difference. First operand 376 states. Second operand 4 states. [2020-10-15 02:54:15,298 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-10-15 02:54:17,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:54:17,879 INFO L93 Difference]: Finished difference Result 684 states and 1212 transitions. [2020-10-15 02:54:17,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 02:54:17,884 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 137 [2020-10-15 02:54:17,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:54:17,917 INFO L225 Difference]: With dead ends: 684 [2020-10-15 02:54:17,918 INFO L226 Difference]: Without dead ends: 544 [2020-10-15 02:54:17,923 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 02:54:17,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 544 states. [2020-10-15 02:54:18,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 544 to 542. [2020-10-15 02:54:18,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 542 states. [2020-10-15 02:54:18,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 796 transitions. [2020-10-15 02:54:18,020 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 796 transitions. Word has length 137 [2020-10-15 02:54:18,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:54:18,021 INFO L479 AbstractCegarLoop]: Abstraction has 542 states and 796 transitions. [2020-10-15 02:54:18,021 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 02:54:18,021 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 796 transitions. [2020-10-15 02:54:18,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-10-15 02:54:18,026 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:54:18,026 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] [2020-10-15 02:54:18,027 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 02:54:18,027 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:54:18,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:54:18,027 INFO L82 PathProgramCache]: Analyzing trace with hash 801487942, now seen corresponding path program 1 times [2020-10-15 02:54:18,028 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:54:18,028 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [397328444] [2020-10-15 02:54:18,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:54:18,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:54:18,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:54:18,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:54:18,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:54:18,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:54:18,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:54:18,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:54:18,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:54:18,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:54:18,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:54:19,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:54:19,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:54:19,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:54:23,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:54:23,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:54:23,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-15 02:54:23,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-15 02:54:23,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5061 [2020-10-15 02:54:23,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:54:23,178 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:54:23,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 02:54:23,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 02:54:23,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-15 02:54:23,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:54:23,581 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-15 02:54:23,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:54:23,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:54:23,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:54:23,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:54:23,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:54:23,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:54:23,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-15 02:54:23,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:54:23,606 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:54:23,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:54:23,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:54:23,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:54:23,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:54:23,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 02:54:23,672 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [397328444] [2020-10-15 02:54:23,673 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 02:54:23,673 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 02:54:23,673 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910000616] [2020-10-15 02:54:23,675 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 02:54:23,675 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:54:23,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 02:54:23,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 02:54:23,676 INFO L87 Difference]: Start difference. First operand 542 states and 796 transitions. Second operand 5 states. [2020-10-15 02:54:26,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:54:26,632 INFO L93 Difference]: Finished difference Result 1562 states and 2287 transitions. [2020-10-15 02:54:26,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 02:54:26,633 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 137 [2020-10-15 02:54:26,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:54:26,640 INFO L225 Difference]: With dead ends: 1562 [2020-10-15 02:54:26,641 INFO L226 Difference]: Without dead ends: 1041 [2020-10-15 02:54:26,646 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 02:54:26,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1041 states. [2020-10-15 02:54:26,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1041 to 1014. [2020-10-15 02:54:26,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1014 states. [2020-10-15 02:54:26,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1014 states to 1014 states and 1485 transitions. [2020-10-15 02:54:26,747 INFO L78 Accepts]: Start accepts. Automaton has 1014 states and 1485 transitions. Word has length 137 [2020-10-15 02:54:26,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:54:26,747 INFO L479 AbstractCegarLoop]: Abstraction has 1014 states and 1485 transitions. [2020-10-15 02:54:26,747 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 02:54:26,747 INFO L276 IsEmpty]: Start isEmpty. Operand 1014 states and 1485 transitions. [2020-10-15 02:54:26,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-10-15 02:54:26,752 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:54:26,752 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:54:26,752 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 02:54:26,753 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:54:26,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:54:26,753 INFO L82 PathProgramCache]: Analyzing trace with hash -1985113274, now seen corresponding path program 1 times [2020-10-15 02:54:26,753 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:54:26,754 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [493136620] [2020-10-15 02:54:26,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:54:26,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:54:26,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:54:26,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:54:26,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:54:27,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:54:27,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:54:27,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:54:27,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:54:27,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:54:29,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:54:31,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:54:31,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:54:31,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:54:31,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-15 02:54:31,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-15 02:54:31,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-15 02:54:31,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:54:31,790 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:54:31,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 02:54:31,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 02:54:31,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-15 02:54:31,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:54:32,203 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-15 02:54:32,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:54:32,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:54:32,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:54:32,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:54:32,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:54:32,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:54:32,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-15 02:54:32,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:54:32,224 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:54:32,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:54:32,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:54:32,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:54:32,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:54:32,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 02:54:32,288 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [493136620] [2020-10-15 02:54:32,289 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 02:54:32,289 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 02:54:32,289 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026849475] [2020-10-15 02:54:32,291 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 02:54:32,292 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:54:32,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 02:54:32,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 02:54:32,294 INFO L87 Difference]: Start difference. First operand 1014 states and 1485 transitions. Second operand 5 states. [2020-10-15 02:54:35,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:54:35,284 INFO L93 Difference]: Finished difference Result 2965 states and 4334 transitions. [2020-10-15 02:54:35,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 02:54:35,284 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 138 [2020-10-15 02:54:35,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:54:35,298 INFO L225 Difference]: With dead ends: 2965 [2020-10-15 02:54:35,298 INFO L226 Difference]: Without dead ends: 1962 [2020-10-15 02:54:35,301 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 02:54:35,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1962 states. [2020-10-15 02:54:35,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1962 to 1940. [2020-10-15 02:54:35,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1940 states. [2020-10-15 02:54:35,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1940 states to 1940 states and 2817 transitions. [2020-10-15 02:54:35,421 INFO L78 Accepts]: Start accepts. Automaton has 1940 states and 2817 transitions. Word has length 138 [2020-10-15 02:54:35,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:54:35,422 INFO L479 AbstractCegarLoop]: Abstraction has 1940 states and 2817 transitions. [2020-10-15 02:54:35,422 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 02:54:35,422 INFO L276 IsEmpty]: Start isEmpty. Operand 1940 states and 2817 transitions. [2020-10-15 02:54:35,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-10-15 02:54:35,428 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:54:35,428 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:54:35,429 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 02:54:35,438 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:54:35,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:54:35,438 INFO L82 PathProgramCache]: Analyzing trace with hash -1048330107, now seen corresponding path program 1 times [2020-10-15 02:54:35,439 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:54:35,441 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2054697082] [2020-10-15 02:54:35,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:54:35,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:54:35,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:54:35,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:54:35,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:54:35,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:54:35,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:54:35,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:54:36,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:54:36,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:54:36,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:54:36,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:54:36,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:54:39,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:54:39,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:54:39,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:54:39,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:54:40,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:54:40,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-15 02:54:40,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-15 02:54:40,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-15 02:54:40,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:54:40,472 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:54:40,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 02:54:40,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 02:54:40,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-15 02:54:40,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:54:40,781 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-15 02:54:40,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:54:40,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:54:40,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:54:40,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:54:40,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:54:40,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:54:40,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-15 02:54:40,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:54:40,804 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:54:40,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:54:40,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:54:40,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:54:40,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-15 02:54:40,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 02:54:40,890 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2054697082] [2020-10-15 02:54:40,891 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 02:54:40,891 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 02:54:40,892 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404384679] [2020-10-15 02:54:40,893 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 02:54:40,893 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:54:40,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 02:54:40,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 02:54:40,894 INFO L87 Difference]: Start difference. First operand 1940 states and 2817 transitions. Second operand 5 states. [2020-10-15 02:54:44,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:54:44,394 INFO L93 Difference]: Finished difference Result 5653 states and 8186 transitions. [2020-10-15 02:54:44,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 02:54:44,399 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 139 [2020-10-15 02:54:44,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:54:44,417 INFO L225 Difference]: With dead ends: 5653 [2020-10-15 02:54:44,418 INFO L226 Difference]: Without dead ends: 3743 [2020-10-15 02:54:44,424 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 02:54:44,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3743 states. [2020-10-15 02:54:44,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3743 to 3723. [2020-10-15 02:54:44,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3723 states. [2020-10-15 02:54:44,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3723 states to 3723 states and 5345 transitions. [2020-10-15 02:54:44,610 INFO L78 Accepts]: Start accepts. Automaton has 3723 states and 5345 transitions. Word has length 139 [2020-10-15 02:54:44,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:54:44,614 INFO L479 AbstractCegarLoop]: Abstraction has 3723 states and 5345 transitions. [2020-10-15 02:54:44,614 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 02:54:44,614 INFO L276 IsEmpty]: Start isEmpty. Operand 3723 states and 5345 transitions. [2020-10-15 02:54:44,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-10-15 02:54:44,621 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:54:44,622 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:54:44,622 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 02:54:44,622 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:54:44,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:54:44,622 INFO L82 PathProgramCache]: Analyzing trace with hash -569234746, now seen corresponding path program 1 times [2020-10-15 02:54:44,623 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:54:44,623 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1878039647] [2020-10-15 02:54:44,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:54:44,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:54:44,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:54:44,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:54:44,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:54:44,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:54:45,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:54:45,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:54:45,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:54:45,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:54:45,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:54:45,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:54:46,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:54:48,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:54:48,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:54:49,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:54:49,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-15 02:54:49,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-15 02:54:49,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-15 02:54:49,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:54:49,652 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:54:49,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 02:54:49,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 02:54:49,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-15 02:54:49,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:54:50,104 WARN L193 SmtUtils]: Spent 365.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-15 02:54:50,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:54:50,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:54:50,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:54:50,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:54:50,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:54:50,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:54:50,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 02:54:50,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:54:50,124 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:54:50,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:54:50,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:54:50,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:54:50,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:54:50,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 02:54:50,187 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1878039647] [2020-10-15 02:54:50,187 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 02:54:50,188 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 02:54:50,188 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016998452] [2020-10-15 02:54:50,188 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 02:54:50,189 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:54:50,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 02:54:50,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 02:54:50,189 INFO L87 Difference]: Start difference. First operand 3723 states and 5345 transitions. Second operand 5 states. [2020-10-15 02:54:52,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:54:52,738 INFO L93 Difference]: Finished difference Result 10792 states and 15428 transitions. [2020-10-15 02:54:52,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 02:54:52,739 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 140 [2020-10-15 02:54:52,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:54:52,768 INFO L225 Difference]: With dead ends: 10792 [2020-10-15 02:54:52,768 INFO L226 Difference]: Without dead ends: 7155 [2020-10-15 02:54:52,778 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 02:54:52,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7155 states. [2020-10-15 02:54:53,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7155 to 7114. [2020-10-15 02:54:53,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7114 states. [2020-10-15 02:54:53,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7114 states to 7114 states and 10054 transitions. [2020-10-15 02:54:53,090 INFO L78 Accepts]: Start accepts. Automaton has 7114 states and 10054 transitions. Word has length 140 [2020-10-15 02:54:53,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:54:53,090 INFO L479 AbstractCegarLoop]: Abstraction has 7114 states and 10054 transitions. [2020-10-15 02:54:53,091 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 02:54:53,091 INFO L276 IsEmpty]: Start isEmpty. Operand 7114 states and 10054 transitions. [2020-10-15 02:54:53,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-10-15 02:54:53,103 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:54:53,104 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:54:53,104 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 02:54:53,104 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:54:53,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:54:53,105 INFO L82 PathProgramCache]: Analyzing trace with hash 984527779, now seen corresponding path program 1 times [2020-10-15 02:54:53,105 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:54:53,105 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [81043716] [2020-10-15 02:54:53,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:54:53,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:54:53,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:54:53,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:54:53,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:54:53,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:54:53,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:54:53,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:54:53,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:54:53,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:54:54,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:54:55,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:54:57,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:54:57,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-10-15 02:54:57,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-15 02:54:57,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4078 [2020-10-15 02:54:57,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:54:57,209 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:54:57,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 02:54:57,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 02:54:57,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-15 02:54:57,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:54:57,545 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-15 02:54:57,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:54:57,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:54:57,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:54:57,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:54:57,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:54:57,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:54:57,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-15 02:54:57,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:54:57,564 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:54:57,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:54:57,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:54:57,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:54:57,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:54:57,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 02:54:57,631 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [81043716] [2020-10-15 02:54:57,633 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 02:54:57,633 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 02:54:57,633 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708421900] [2020-10-15 02:54:57,634 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 02:54:57,634 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:54:57,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 02:54:57,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 02:54:57,635 INFO L87 Difference]: Start difference. First operand 7114 states and 10054 transitions. Second operand 5 states. [2020-10-15 02:55:01,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:55:01,164 INFO L93 Difference]: Finished difference Result 19873 states and 28160 transitions. [2020-10-15 02:55:01,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 02:55:01,165 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 141 [2020-10-15 02:55:01,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:55:01,224 INFO L225 Difference]: With dead ends: 19873 [2020-10-15 02:55:01,224 INFO L226 Difference]: Without dead ends: 13728 [2020-10-15 02:55:01,239 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 02:55:01,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13728 states. [2020-10-15 02:55:01,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13728 to 13687. [2020-10-15 02:55:01,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13687 states. [2020-10-15 02:55:01,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13687 states to 13687 states and 19114 transitions. [2020-10-15 02:55:01,863 INFO L78 Accepts]: Start accepts. Automaton has 13687 states and 19114 transitions. Word has length 141 [2020-10-15 02:55:01,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:55:01,863 INFO L479 AbstractCegarLoop]: Abstraction has 13687 states and 19114 transitions. [2020-10-15 02:55:01,863 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 02:55:01,863 INFO L276 IsEmpty]: Start isEmpty. Operand 13687 states and 19114 transitions. [2020-10-15 02:55:01,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-10-15 02:55:01,885 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:55:01,885 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:55:01,885 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 02:55:01,885 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:55:01,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:55:01,886 INFO L82 PathProgramCache]: Analyzing trace with hash 1407817189, now seen corresponding path program 1 times [2020-10-15 02:55:01,886 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:55:01,886 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [683329139] [2020-10-15 02:55:01,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:55:01,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:55:01,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:02,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:02,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:02,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:02,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:03,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:55:03,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-15 02:55:03,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 02:55:03,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1285 [2020-10-15 02:55:03,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:55:03,199 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:55:03,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 02:55:03,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 02:55:03,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-15 02:55:03,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:55:03,520 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-15 02:55:03,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:55:03,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:55:03,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:03,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:55:03,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:55:03,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:55:03,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-15 02:55:03,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:55:03,537 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:55:03,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:55:03,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:55:03,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:55:03,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:55:03,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 02:55:03,608 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [683329139] [2020-10-15 02:55:03,608 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 02:55:03,608 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 02:55:03,608 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498052378] [2020-10-15 02:55:03,609 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 02:55:03,609 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:55:03,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 02:55:03,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 02:55:03,610 INFO L87 Difference]: Start difference. First operand 13687 states and 19114 transitions. Second operand 5 states. [2020-10-15 02:55:07,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:55:07,511 INFO L93 Difference]: Finished difference Result 36442 states and 50810 transitions. [2020-10-15 02:55:07,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 02:55:07,511 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 142 [2020-10-15 02:55:07,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:55:07,563 INFO L225 Difference]: With dead ends: 36442 [2020-10-15 02:55:07,563 INFO L226 Difference]: Without dead ends: 23705 [2020-10-15 02:55:07,602 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 02:55:07,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23705 states. [2020-10-15 02:55:09,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23705 to 23664. [2020-10-15 02:55:09,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23664 states. [2020-10-15 02:55:09,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23664 states to 23664 states and 32380 transitions. [2020-10-15 02:55:09,344 INFO L78 Accepts]: Start accepts. Automaton has 23664 states and 32380 transitions. Word has length 142 [2020-10-15 02:55:09,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:55:09,344 INFO L479 AbstractCegarLoop]: Abstraction has 23664 states and 32380 transitions. [2020-10-15 02:55:09,344 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 02:55:09,344 INFO L276 IsEmpty]: Start isEmpty. Operand 23664 states and 32380 transitions. [2020-10-15 02:55:09,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-10-15 02:55:09,374 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:55:09,374 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:55:09,374 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 02:55:09,374 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:55:09,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:55:09,375 INFO L82 PathProgramCache]: Analyzing trace with hash -2070457181, now seen corresponding path program 1 times [2020-10-15 02:55:09,375 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:55:09,375 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1517457726] [2020-10-15 02:55:09,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:55:09,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-15 02:55:09,424 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-15 02:55:09,424 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-15 02:55:09,429 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 02:55:09,475 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 02:55:09 BoogieIcfgContainer [2020-10-15 02:55:09,476 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-15 02:55:09,478 INFO L168 Benchmark]: Toolchain (without parser) took 63823.70 ms. Allocated memory was 147.8 MB in the beginning and 1.4 GB in the end (delta: 1.3 GB). Free memory was 101.1 MB in the beginning and 884.5 MB in the end (delta: -783.4 MB). Peak memory consumption was 479.1 MB. Max. memory is 7.1 GB. [2020-10-15 02:55:09,479 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 147.8 MB. Free memory was 121.1 MB in the beginning and 120.7 MB in the end (delta: 420.0 kB). Peak memory consumption was 420.0 kB. Max. memory is 7.1 GB. [2020-10-15 02:55:09,479 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1202.47 ms. Allocated memory was 147.8 MB in the beginning and 206.0 MB in the end (delta: 58.2 MB). Free memory was 100.7 MB in the beginning and 162.5 MB in the end (delta: -61.8 MB). Peak memory consumption was 26.6 MB. Max. memory is 7.1 GB. [2020-10-15 02:55:09,480 INFO L168 Benchmark]: Boogie Preprocessor took 120.40 ms. Allocated memory is still 206.0 MB. Free memory was 162.5 MB in the beginning and 157.6 MB in the end (delta: 4.9 MB). Peak memory consumption was 4.9 MB. Max. memory is 7.1 GB. [2020-10-15 02:55:09,481 INFO L168 Benchmark]: RCFGBuilder took 1585.57 ms. Allocated memory was 206.0 MB in the beginning and 235.9 MB in the end (delta: 29.9 MB). Free memory was 157.6 MB in the beginning and 106.5 MB in the end (delta: 51.1 MB). Peak memory consumption was 81.0 MB. Max. memory is 7.1 GB. [2020-10-15 02:55:09,482 INFO L168 Benchmark]: TraceAbstraction took 60910.01 ms. Allocated memory was 235.9 MB in the beginning and 1.4 GB in the end (delta: 1.2 GB). Free memory was 106.5 MB in the beginning and 884.5 MB in the end (delta: -778.0 MB). Peak memory consumption was 396.5 MB. Max. memory is 7.1 GB. [2020-10-15 02:55:09,486 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 147.8 MB. Free memory was 121.1 MB in the beginning and 120.7 MB in the end (delta: 420.0 kB). Peak memory consumption was 420.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1202.47 ms. Allocated memory was 147.8 MB in the beginning and 206.0 MB in the end (delta: 58.2 MB). Free memory was 100.7 MB in the beginning and 162.5 MB in the end (delta: -61.8 MB). Peak memory consumption was 26.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 120.40 ms. Allocated memory is still 206.0 MB. Free memory was 162.5 MB in the beginning and 157.6 MB in the end (delta: 4.9 MB). Peak memory consumption was 4.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1585.57 ms. Allocated memory was 206.0 MB in the beginning and 235.9 MB in the end (delta: 29.9 MB). Free memory was 157.6 MB in the beginning and 106.5 MB in the end (delta: 51.1 MB). Peak memory consumption was 81.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 60910.01 ms. Allocated memory was 235.9 MB in the beginning and 1.4 GB in the end (delta: 1.2 GB). Free memory was 106.5 MB in the beginning and 884.5 MB in the end (delta: -778.0 MB). Peak memory consumption was 396.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 793]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L1] int __return_main; [L14] msg_t nomsg = (msg_t )-1; [L15] port_t p12 = 0; [L16] char p12_old = '\x0'; [L17] char p12_new = '\x0'; [L18] _Bool ep12 = 0; [L19] port_t p13 = 0; [L20] char p13_old = '\x0'; [L21] char p13_new = '\x0'; [L22] _Bool ep13 = 0; [L23] port_t p21 = 0; [L24] char p21_old = '\x0'; [L25] char p21_new = '\x0'; [L26] _Bool ep21 = 0; [L27] port_t p23 = 0; [L28] char p23_old = '\x0'; [L29] char p23_new = '\x0'; [L30] _Bool ep23 = 0; [L31] port_t p31 = 0; [L32] char p31_old = '\x0'; [L33] char p31_new = '\x0'; [L34] _Bool ep31 = 0; [L35] port_t p32 = 0; [L36] char p32_old = '\x0'; [L37] char p32_new = '\x0'; [L38] _Bool ep32 = 0; [L39] char id1 = '\x0'; [L40] char r1 = '\x0'; [L41] char st1 = '\x0'; [L42] char nl1 = '\x0'; [L43] char m1 = '\x0'; [L44] char max1 = '\x0'; [L45] _Bool mode1 = 0; [L46] char id2 = '\x0'; [L47] char r2 = '\x0'; [L48] char st2 = '\x0'; [L49] char nl2 = '\x0'; [L50] char m2 = '\x0'; [L51] char max2 = '\x0'; [L52] _Bool mode2 = 0; [L53] char id3 = '\x0'; [L54] char r3 = '\x0'; [L55] char st3 = '\x0'; [L56] char nl3 = '\x0'; [L57] char m3 = '\x0'; [L58] char max3 = '\x0'; [L59] _Bool mode3 = 0; [L63] void (*nodes[3])() = { &node1, &node2, &node3 }; [L67] int __return_1708; [L68] int __return_1836; [L69] int __return_1954; [L70] int __return_2075; [L71] int __return_2801; [L72] int __return_2770; [L73] int __return_2712; [L74] int __return_2678; [L75] int __tmp_2199_0; [L76] int __return_2307; [L77] int __return_2212; [L78] int __return_2575; [L79] int __return_2541; [L80] int __return_2462; [L81] int __return_2198; [L84] int main__c1; [L85] int main__i2; [L86] main__c1 = 0 [L87] ep12 = __VERIFIER_nondet_bool() [L88] ep13 = __VERIFIER_nondet_bool() [L89] ep21 = __VERIFIER_nondet_bool() [L90] ep23 = __VERIFIER_nondet_bool() [L91] ep31 = __VERIFIER_nondet_bool() [L92] ep32 = __VERIFIER_nondet_bool() [L93] id1 = __VERIFIER_nondet_char() [L94] r1 = __VERIFIER_nondet_char() [L95] st1 = __VERIFIER_nondet_char() [L96] nl1 = __VERIFIER_nondet_char() [L97] m1 = __VERIFIER_nondet_char() [L98] max1 = __VERIFIER_nondet_char() [L99] mode1 = __VERIFIER_nondet_bool() [L100] id2 = __VERIFIER_nondet_char() [L101] r2 = __VERIFIER_nondet_char() [L102] st2 = __VERIFIER_nondet_char() [L103] nl2 = __VERIFIER_nondet_char() [L104] m2 = __VERIFIER_nondet_char() [L105] max2 = __VERIFIER_nondet_char() [L106] mode2 = __VERIFIER_nondet_bool() [L107] id3 = __VERIFIER_nondet_char() [L108] r3 = __VERIFIER_nondet_char() [L109] st3 = __VERIFIER_nondet_char() [L110] nl3 = __VERIFIER_nondet_char() [L111] m3 = __VERIFIER_nondet_char() [L112] max3 = __VERIFIER_nondet_char() [L113] mode3 = __VERIFIER_nondet_bool() [L115] _Bool init__r121; [L116] _Bool init__r131; [L117] _Bool init__r211; [L118] _Bool init__r231; [L119] _Bool init__r311; [L120] _Bool init__r321; [L121] _Bool init__r122; [L122] int init__tmp; [L123] _Bool init__r132; [L124] int init__tmp___0; [L125] _Bool init__r212; [L126] int init__tmp___1; [L127] _Bool init__r232; [L128] int init__tmp___2; [L129] _Bool init__r312; [L130] int init__tmp___3; [L131] _Bool init__r322; [L132] int init__tmp___4; [L133] int init__tmp___5; [L134] init__r121 = ep12 [L135] init__r131 = ep13 [L136] init__r211 = ep21 [L137] init__r231 = ep23 [L138] init__r311 = ep31 [L139] init__r321 = ep32 [L140] COND FALSE !(!(init__r121 == 0)) [L2910] COND FALSE !(!(init__r131 == 0)) [L2926] init__tmp = 0 [L144] init__r122 = (_Bool)init__tmp [L145] COND FALSE !(!(init__r131 == 0)) [L2887] COND FALSE !(!(init__r121 == 0)) [L2903] init__tmp___0 = 0 [L149] init__r132 = (_Bool)init__tmp___0 [L150] COND FALSE !(!(init__r211 == 0)) [L2864] COND FALSE !(!(init__r231 == 0)) [L2880] init__tmp___1 = 0 [L154] init__r212 = (_Bool)init__tmp___1 [L155] COND FALSE !(!(init__r231 == 0)) [L2841] COND FALSE !(!(init__r211 == 0)) [L2857] init__tmp___2 = 0 [L159] init__r232 = (_Bool)init__tmp___2 [L160] COND FALSE !(!(init__r311 == 0)) [L2818] COND FALSE !(!(init__r321 == 0)) [L2834] init__tmp___3 = 0 [L164] init__r312 = (_Bool)init__tmp___3 [L165] COND FALSE !(!(init__r321 == 0)) [L2795] COND FALSE !(!(init__r311 == 0)) [L2811] init__tmp___4 = 0 [L169] init__r322 = (_Bool)init__tmp___4 [L170] COND TRUE ((int)id1) != ((int)id2) [L172] COND TRUE ((int)id1) != ((int)id3) [L174] COND TRUE ((int)id2) != ((int)id3) [L176] COND TRUE ((int)id1) >= 0 [L178] COND TRUE ((int)id2) >= 0 [L180] COND TRUE ((int)id3) >= 0 [L182] COND TRUE ((int)r1) == 0 [L184] COND TRUE ((int)r2) == 0 [L186] COND TRUE ((int)r3) == 0 [L188] COND TRUE ((int)max1) == ((int)id1) [L190] COND TRUE ((int)max2) == ((int)id2) [L192] COND TRUE ((int)max3) == ((int)id3) [L194] COND TRUE ((int)st1) == 0 [L196] COND TRUE ((int)st2) == 0 [L198] COND TRUE ((int)st3) == 0 [L200] COND TRUE ((int)nl1) == 0 [L202] COND TRUE ((int)nl2) == 0 [L204] COND TRUE ((int)nl3) == 0 [L206] COND TRUE ((int)mode1) == 0 [L208] COND TRUE ((int)mode2) == 0 [L210] COND TRUE ((int)mode3) == 0 [L212] init__tmp___5 = 1 [L213] __return_1708 = init__tmp___5 [L214] main__i2 = __return_1708 [L215] COND TRUE main__i2 != 0 [L217] p12_old = nomsg [L218] p12_new = nomsg [L219] p13_old = nomsg [L220] p13_new = nomsg [L221] p21_old = nomsg [L222] p21_new = nomsg [L223] p23_old = nomsg [L224] p23_new = nomsg [L225] p31_old = nomsg [L226] p31_new = nomsg [L227] p32_old = nomsg [L228] p32_new = nomsg [L229] main__i2 = 0 [L230] COND TRUE main__i2 < 6 [L233] COND FALSE !(!(mode1 == 0)) [L239] COND TRUE ((int)r1) < 2 [L241] COND FALSE !(!(ep12 == 0)) [L252] COND FALSE !(!(ep13 == 0)) [L263] mode1 = 1 [L265] COND FALSE !(!(mode2 == 0)) [L271] COND TRUE ((int)r2) < 2 [L273] COND FALSE !(!(ep21 == 0)) [L284] COND FALSE !(!(ep23 == 0)) [L295] mode2 = 1 [L297] COND FALSE !(!(mode3 == 0)) [L303] COND TRUE ((int)r3) < 2 [L305] COND FALSE !(!(ep31 == 0)) [L316] COND FALSE !(!(ep32 == 0)) [L327] mode3 = 1 [L328] p12_old = p12_new [L329] p12_new = nomsg [L330] p13_old = p13_new [L331] p13_new = nomsg [L332] p21_old = p21_new [L333] p21_new = nomsg [L334] p23_old = p23_new [L335] p23_new = nomsg [L336] p31_old = p31_new [L337] p31_new = nomsg [L338] p32_old = p32_new [L339] p32_new = nomsg [L341] int check__tmp; [L342] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L344] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L346] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L348] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L350] COND FALSE !(((int)r1) >= 2) [L356] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L358] COND TRUE ((int)r1) < 2 [L360] COND FALSE !(((int)r1) >= 2) [L366] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L368] COND TRUE ((int)r1) < 2 [L370] check__tmp = 1 [L371] __return_1836 = check__tmp [L372] main__c1 = __return_1836 [L374] _Bool __tmp_1; [L375] __tmp_1 = main__c1 [L376] _Bool assert__arg; [L377] assert__arg = __tmp_1 [L378] COND FALSE !(assert__arg == 0) [L384] int main____CPAchecker_TMP_0 = main__i2; [L385] main__i2 = main__i2 + 1 [L386] COND TRUE main__i2 < 6 [L389] COND TRUE !(mode1 == 0) [L391] r1 = (char)(((int)r1) + 1) [L392] COND FALSE !(!(ep21 == 0)) [L400] COND FALSE !(!(ep31 == 0)) [L408] COND FALSE !(((int)r1) == 2) [L414] mode1 = 0 [L416] COND TRUE !(mode2 == 0) [L418] r2 = (char)(((int)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] r3 = (char)(((int)r3) + 1) [L446] COND FALSE !(!(ep13 == 0)) [L454] COND FALSE !(!(ep23 == 0)) [L462] COND FALSE !(((int)r3) == 2) [L468] mode3 = 0 [L469] p12_old = p12_new [L470] p12_new = nomsg [L471] p13_old = p13_new [L472] p13_new = nomsg [L473] p21_old = p21_new [L474] p21_new = nomsg [L475] p23_old = p23_new [L476] p23_new = nomsg [L477] p31_old = p31_new [L478] p31_new = nomsg [L479] p32_old = p32_new [L480] p32_new = nomsg [L482] int check__tmp; [L483] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L485] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L487] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L489] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L491] COND FALSE !(((int)r1) >= 2) [L497] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L499] COND TRUE ((int)r1) < 2 [L501] COND FALSE !(((int)r1) >= 2) [L507] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L509] COND TRUE ((int)r1) < 2 [L511] check__tmp = 1 [L512] __return_1954 = check__tmp [L513] main__c1 = __return_1954 [L515] _Bool __tmp_2; [L516] __tmp_2 = main__c1 [L517] _Bool assert__arg; [L518] assert__arg = __tmp_2 [L519] COND FALSE !(assert__arg == 0) [L525] int main____CPAchecker_TMP_0 = main__i2; [L526] main__i2 = main__i2 + 1 [L527] COND TRUE main__i2 < 6 [L530] COND FALSE !(!(mode1 == 0)) [L536] COND TRUE ((int)r1) < 2 [L538] COND FALSE !(!(ep12 == 0)) [L549] COND FALSE !(!(ep13 == 0)) [L560] mode1 = 1 [L562] COND FALSE !(!(mode2 == 0)) [L568] COND TRUE ((int)r2) < 2 [L570] COND FALSE !(!(ep21 == 0)) [L581] COND FALSE !(!(ep23 == 0)) [L592] mode2 = 1 [L594] COND FALSE !(!(mode3 == 0)) [L600] COND TRUE ((int)r3) < 2 [L602] COND FALSE !(!(ep31 == 0)) [L613] COND FALSE !(!(ep32 == 0)) [L624] mode3 = 1 [L625] p12_old = p12_new [L626] p12_new = nomsg [L627] p13_old = p13_new [L628] p13_new = nomsg [L629] p21_old = p21_new [L630] p21_new = nomsg [L631] p23_old = p23_new [L632] p23_new = nomsg [L633] p31_old = p31_new [L634] p31_new = nomsg [L635] p32_old = p32_new [L636] p32_new = nomsg [L638] int check__tmp; [L639] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L641] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L643] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L645] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L647] COND FALSE !(((int)r1) >= 2) [L653] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L655] COND TRUE ((int)r1) < 2 [L657] COND FALSE !(((int)r1) >= 2) [L663] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L665] COND TRUE ((int)r1) < 2 [L667] check__tmp = 1 [L668] __return_2075 = check__tmp [L669] main__c1 = __return_2075 [L671] _Bool __tmp_3; [L672] __tmp_3 = main__c1 [L673] _Bool assert__arg; [L674] assert__arg = __tmp_3 [L675] COND FALSE !(assert__arg == 0) [L681] int main____CPAchecker_TMP_0 = main__i2; [L682] main__i2 = main__i2 + 1 [L683] COND TRUE main__i2 < 6 [L686] COND TRUE !(mode1 == 0) [L688] r1 = (char)(((int)r1) + 1) [L689] COND FALSE !(!(ep21 == 0)) [L697] COND FALSE !(!(ep31 == 0)) [L705] COND TRUE ((int)r1) == 2 [L707] COND TRUE ((int)max1) == ((int)id1) [L709] st1 = 1 [L710] mode1 = 0 [L712] COND TRUE !(mode2 == 0) [L714] r2 = (char)(((int)r2) + 1) [L715] COND FALSE !(!(ep12 == 0)) [L723] COND FALSE !(!(ep32 == 0)) [L731] COND TRUE ((int)r2) == 2 [L733] COND TRUE ((int)max2) == ((int)id2) [L735] st2 = 1 [L736] mode2 = 0 [L738] COND TRUE !(mode3 == 0) [L740] r3 = (char)(((int)r3) + 1) [L741] COND FALSE !(!(ep13 == 0)) [L749] COND FALSE !(!(ep23 == 0)) [L757] COND TRUE ((int)r3) == 2 [L759] COND TRUE ((int)max3) == ((int)id3) [L761] st3 = 1 [L762] mode3 = 0 [L763] p12_old = p12_new [L764] p12_new = nomsg [L765] p13_old = p13_new [L766] p13_new = nomsg [L767] p21_old = p21_new [L768] p21_new = nomsg [L769] p23_old = p23_new [L770] p23_new = nomsg [L771] p31_old = p31_new [L772] p31_new = nomsg [L773] p32_old = p32_new [L774] p32_new = nomsg [L776] int check__tmp; [L777] COND FALSE !(((((int)st1) + ((int)st2)) + ((int)st3)) <= 1) [L783] check__tmp = 0 [L784] __return_2801 = check__tmp [L785] main__c1 = __return_2801 [L787] _Bool __tmp_4; [L788] __tmp_4 = main__c1 [L789] _Bool assert__arg; [L790] assert__arg = __tmp_4 [L791] COND TRUE assert__arg == 0 [L793] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 380 locations, 5 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 60.7s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 22.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 6075 SDtfs, 6551 SDslu, 3368 SDs, 0 SdLazy, 6587 SolverSat, 116 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 16.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 48 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23664occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 3.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 194 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 33.4s InterpolantComputationTime, 1117 NumberOfCodeBlocks, 1117 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 967 ConstructedInterpolants, 0 QuantifiedInterpolants, 1018999 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 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...