/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.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-15 02:55:00,171 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 02:55:00,173 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 02:55:00,197 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 02:55:00,197 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 02:55:00,198 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 02:55:00,199 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 02:55:00,201 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 02:55:00,203 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 02:55:00,204 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 02:55:00,205 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 02:55:00,206 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 02:55:00,206 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 02:55:00,207 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 02:55:00,208 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 02:55:00,209 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 02:55:00,210 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 02:55:00,211 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 02:55:00,213 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 02:55:00,214 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 02:55:00,216 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 02:55:00,217 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 02:55:00,218 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 02:55:00,219 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 02:55:00,221 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 02:55:00,222 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 02:55:00,222 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 02:55:00,223 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 02:55:00,223 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 02:55:00,224 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 02:55:00,224 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 02:55:00,225 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 02:55:00,226 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 02:55:00,227 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 02:55:00,228 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 02:55:00,228 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 02:55:00,228 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 02:55:00,229 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 02:55:00,229 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 02:55:00,230 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 02:55:00,231 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 02:55:00,231 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-15 02:55:00,253 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 02:55:00,253 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 02:55:00,255 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 02:55:00,255 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 02:55:00,255 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 02:55:00,255 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 02:55:00,256 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 02:55:00,256 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 02:55:00,256 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 02:55:00,256 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 02:55:00,256 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 02:55:00,257 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 02:55:00,257 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 02:55:00,257 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 02:55:00,257 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 02:55:00,257 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 02:55:00,258 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 02:55:00,258 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 02:55:00,258 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 02:55:00,258 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 02:55:00,259 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 02:55:00,259 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 02:55:00,259 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 02:55:00,259 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 02:55:00,259 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 02:55:00,260 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 02:55:00,260 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 02:55:00,260 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 02:55:00,260 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 02:55:00,260 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-15 02:55:00,595 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 02:55:00,608 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 02:55:00,611 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 02:55:00,613 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 02:55:00,613 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 02:55:00,614 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-15 02:55:00,676 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7c40203ce/0cf910d00f054111ae98272c77fe569d/FLAGfe82f404c [2020-10-15 02:55:01,241 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 02:55:01,244 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-15 02:55:01,261 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7c40203ce/0cf910d00f054111ae98272c77fe569d/FLAGfe82f404c [2020-10-15 02:55:01,516 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7c40203ce/0cf910d00f054111ae98272c77fe569d [2020-10-15 02:55:01,524 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 02:55:01,526 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-15 02:55:01,530 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 02:55:01,531 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 02:55:01,535 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 02:55:01,536 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 02:55:01" (1/1) ... [2020-10-15 02:55:01,539 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a3fa750 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:55:01, skipping insertion in model container [2020-10-15 02:55:01,539 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 02:55:01" (1/1) ... [2020-10-15 02:55:01,548 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 02:55:01,617 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 02:55:02,206 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 02:55:02,217 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 02:55:02,380 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 02:55:02,398 INFO L208 MainTranslator]: Completed translation [2020-10-15 02:55:02,399 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:55:02 WrapperNode [2020-10-15 02:55:02,399 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 02:55:02,400 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 02:55:02,400 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 02:55:02,400 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 02:55:02,411 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:55:02" (1/1) ... [2020-10-15 02:55:02,411 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:55:02" (1/1) ... [2020-10-15 02:55:02,428 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:55:02" (1/1) ... [2020-10-15 02:55:02,429 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:55:02" (1/1) ... [2020-10-15 02:55:02,454 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:55:02" (1/1) ... [2020-10-15 02:55:02,475 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:55:02" (1/1) ... [2020-10-15 02:55:02,481 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:55:02" (1/1) ... [2020-10-15 02:55:02,488 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 02:55:02,489 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 02:55:02,489 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 02:55:02,489 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 02:55:02,490 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:55:02" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 02:55:02,589 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-15 02:55:02,590 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 02:55:02,590 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-15 02:55:02,590 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-15 02:55:02,590 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-15 02:55:02,591 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-15 02:55:02,591 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-15 02:55:02,592 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-15 02:55:02,593 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-15 02:55:02,593 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-15 02:55:02,593 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-15 02:55:02,593 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-15 02:55:02,593 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-15 02:55:02,594 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-15 02:55:02,594 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-15 02:55:02,595 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-15 02:55:02,595 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-15 02:55:02,595 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-15 02:55:02,596 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-15 02:55:02,596 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-15 02:55:02,596 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 02:55:03,961 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 02:55:03,961 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-15 02:55:03,968 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 02:55:03 BoogieIcfgContainer [2020-10-15 02:55:03,968 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 02:55:03,969 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 02:55:03,970 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 02:55:03,973 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 02:55:03,973 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 02:55:01" (1/3) ... [2020-10-15 02:55:03,974 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60e98b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 02:55:03, skipping insertion in model container [2020-10-15 02:55:03,975 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:55:02" (2/3) ... [2020-10-15 02:55:03,975 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60e98b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 02:55:03, skipping insertion in model container [2020-10-15 02:55:03,975 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 02:55:03" (3/3) ... [2020-10-15 02:55:03,977 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-15 02:55:03,988 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-15 02:55:03,997 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 02:55:04,014 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-15 02:55:04,044 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-15 02:55:04,044 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-15 02:55:04,045 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-15 02:55:04,045 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 02:55:04,045 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 02:55:04,045 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-15 02:55:04,045 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 02:55:04,046 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 02:55:04,073 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states. [2020-10-15 02:55:04,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-10-15 02:55:04,090 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:55:04,091 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:55:04,092 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:55:04,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:55:04,099 INFO L82 PathProgramCache]: Analyzing trace with hash -1095322417, now seen corresponding path program 1 times [2020-10-15 02:55:04,108 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:55:04,109 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1119074340] [2020-10-15 02:55:04,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:55:04,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:55:04,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:04,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:05,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:05,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:05,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:05,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:05,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:05,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:05,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:06,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:06,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:06,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:08,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:09,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:55:09,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-15 02:55:09,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-15 02:55:09,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-15 02:55:09,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:55:09,648 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:55:09,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 02:55:09,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-15 02:55:09,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-15 02:55:09,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-15 02:55:10,035 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-15 02:55:10,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:55:10,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:55:10,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:10,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:55:10,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:55:10,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:55:10,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-15 02:55:10,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:55:10,061 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:55:10,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:55:10,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:55:10,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:55:10,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:55:10,127 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 02:55:10,128 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1119074340] [2020-10-15 02:55:10,130 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 02:55:10,130 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 02:55:10,131 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401346293] [2020-10-15 02:55:10,140 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 02:55:10,141 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:55:10,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 02:55:10,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 02:55:10,157 INFO L87 Difference]: Start difference. First operand 311 states. Second operand 4 states. [2020-10-15 02:55:10,398 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 167 [2020-10-15 02:55:11,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:55:11,983 INFO L93 Difference]: Finished difference Result 635 states and 1108 transitions. [2020-10-15 02:55:11,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 02:55:11,985 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 144 [2020-10-15 02:55:11,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:55:12,026 INFO L225 Difference]: With dead ends: 635 [2020-10-15 02:55:12,026 INFO L226 Difference]: Without dead ends: 508 [2020-10-15 02:55:12,031 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 02:55:12,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2020-10-15 02:55:12,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 506. [2020-10-15 02:55:12,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 506 states. [2020-10-15 02:55:12,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 506 states to 506 states and 755 transitions. [2020-10-15 02:55:12,121 INFO L78 Accepts]: Start accepts. Automaton has 506 states and 755 transitions. Word has length 144 [2020-10-15 02:55:12,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:55:12,122 INFO L479 AbstractCegarLoop]: Abstraction has 506 states and 755 transitions. [2020-10-15 02:55:12,122 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 02:55:12,123 INFO L276 IsEmpty]: Start isEmpty. Operand 506 states and 755 transitions. [2020-10-15 02:55:12,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-10-15 02:55:12,127 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:55:12,127 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:55:12,127 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 02:55:12,128 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:55:12,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:55:12,128 INFO L82 PathProgramCache]: Analyzing trace with hash -2000756509, now seen corresponding path program 1 times [2020-10-15 02:55:12,128 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:55:12,129 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1144281056] [2020-10-15 02:55:12,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:55:12,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:55:12,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:12,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:12,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:12,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:12,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:12,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:12,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:12,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:12,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:12,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:13,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:14,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:14,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:15,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:17,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:55:17,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-15 02:55:17,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-15 02:55:17,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-15 02:55:17,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:55:17,200 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:55:17,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 02:55:17,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 02:55:17,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-15 02:55:17,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:55:17,492 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-15 02:55:17,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:55:17,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:55:17,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:17,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:55:17,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:55:17,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:55:17,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 02:55:17,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:55:17,510 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:55:17,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:55:17,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:55:17,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:55:17,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:55:17,576 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 02:55:17,577 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1144281056] [2020-10-15 02:55:17,577 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 02:55:17,578 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 02:55:17,578 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476154928] [2020-10-15 02:55:17,580 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 02:55:17,580 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:55:17,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 02:55:17,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 02:55:17,581 INFO L87 Difference]: Start difference. First operand 506 states and 755 transitions. Second operand 5 states. [2020-10-15 02:55:19,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:55:19,885 INFO L93 Difference]: Finished difference Result 1470 states and 2192 transitions. [2020-10-15 02:55:19,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 02:55:19,886 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 144 [2020-10-15 02:55:19,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:55:19,897 INFO L225 Difference]: With dead ends: 1470 [2020-10-15 02:55:19,897 INFO L226 Difference]: Without dead ends: 975 [2020-10-15 02:55:19,905 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 02:55:19,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 975 states. [2020-10-15 02:55:20,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 975 to 973. [2020-10-15 02:55:20,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 973 states. [2020-10-15 02:55:20,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 973 states to 973 states and 1438 transitions. [2020-10-15 02:55:20,007 INFO L78 Accepts]: Start accepts. Automaton has 973 states and 1438 transitions. Word has length 144 [2020-10-15 02:55:20,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:55:20,009 INFO L479 AbstractCegarLoop]: Abstraction has 973 states and 1438 transitions. [2020-10-15 02:55:20,010 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 02:55:20,010 INFO L276 IsEmpty]: Start isEmpty. Operand 973 states and 1438 transitions. [2020-10-15 02:55:20,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-10-15 02:55:20,020 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:55:20,020 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:55:20,021 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 02:55:20,021 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:55:20,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:55:20,021 INFO L82 PathProgramCache]: Analyzing trace with hash -916167616, now seen corresponding path program 1 times [2020-10-15 02:55:20,022 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:55:20,022 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1482088005] [2020-10-15 02:55:20,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:55:20,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:55:20,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:20,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:20,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:20,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:20,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:20,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:20,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:20,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:20,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:20,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:21,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:22,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:22,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:22,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:25,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:55:25,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-15 02:55:25,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-15 02:55:25,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-15 02:55:25,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:55:25,066 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:55:25,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 02:55:25,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 02:55:25,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-15 02:55:25,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:55:25,339 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-15 02:55:25,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:55:25,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:55:25,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:25,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:55:25,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:55:25,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:55:25,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-15 02:55:25,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:55:25,359 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:55:25,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:55:25,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:55:25,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:55:25,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:55:25,423 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 02:55:25,424 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1482088005] [2020-10-15 02:55:25,424 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 02:55:25,425 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 02:55:25,425 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706961820] [2020-10-15 02:55:25,426 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 02:55:25,426 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:55:25,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 02:55:25,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 02:55:25,427 INFO L87 Difference]: Start difference. First operand 973 states and 1438 transitions. Second operand 5 states. [2020-10-15 02:55:27,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:55:27,816 INFO L93 Difference]: Finished difference Result 2832 states and 4180 transitions. [2020-10-15 02:55:27,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 02:55:27,817 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 145 [2020-10-15 02:55:27,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:55:27,830 INFO L225 Difference]: With dead ends: 2832 [2020-10-15 02:55:27,830 INFO L226 Difference]: Without dead ends: 1882 [2020-10-15 02:55:27,835 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 02:55:27,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1882 states. [2020-10-15 02:55:27,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1882 to 1880. [2020-10-15 02:55:27,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1880 states. [2020-10-15 02:55:27,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1880 states to 1880 states and 2750 transitions. [2020-10-15 02:55:27,966 INFO L78 Accepts]: Start accepts. Automaton has 1880 states and 2750 transitions. Word has length 145 [2020-10-15 02:55:27,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:55:27,967 INFO L479 AbstractCegarLoop]: Abstraction has 1880 states and 2750 transitions. [2020-10-15 02:55:27,977 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 02:55:27,978 INFO L276 IsEmpty]: Start isEmpty. Operand 1880 states and 2750 transitions. [2020-10-15 02:55:27,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-15 02:55:27,989 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:55:27,989 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:55:27,990 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 02:55:27,990 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:55:27,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:55:27,991 INFO L82 PathProgramCache]: Analyzing trace with hash -233310428, now seen corresponding path program 1 times [2020-10-15 02:55:27,991 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:55:27,992 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1032699349] [2020-10-15 02:55:27,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:55:28,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:55:28,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:28,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:28,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:28,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:28,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:28,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:28,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:28,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:29,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:29,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:30,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:31,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:31,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:31,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:31,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:33,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:55:33,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-15 02:55:33,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-15 02:55:33,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-15 02:55:33,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:55:33,067 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:55:33,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 02:55:33,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 02:55:33,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-15 02:55:33,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:55:33,382 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-15 02:55:33,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:55:33,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:55:33,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:33,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:55:33,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:55:33,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:55:33,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 02:55:33,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:55:33,397 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:55:33,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:55:33,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:55:33,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:55:33,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:55:33,465 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 02:55:33,466 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1032699349] [2020-10-15 02:55:33,466 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 02:55:33,466 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 02:55:33,467 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259038723] [2020-10-15 02:55:33,467 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 02:55:33,468 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:55:33,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 02:55:33,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 02:55:33,468 INFO L87 Difference]: Start difference. First operand 1880 states and 2750 transitions. Second operand 5 states. [2020-10-15 02:55:35,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:55:35,727 INFO L93 Difference]: Finished difference Result 5444 states and 7936 transitions. [2020-10-15 02:55:35,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 02:55:35,728 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 146 [2020-10-15 02:55:35,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:55:35,748 INFO L225 Difference]: With dead ends: 5444 [2020-10-15 02:55:35,748 INFO L226 Difference]: Without dead ends: 3614 [2020-10-15 02:55:35,754 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 02:55:35,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3614 states. [2020-10-15 02:55:35,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3614 to 3612. [2020-10-15 02:55:35,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3612 states. [2020-10-15 02:55:35,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3612 states to 3612 states and 5216 transitions. [2020-10-15 02:55:35,962 INFO L78 Accepts]: Start accepts. Automaton has 3612 states and 5216 transitions. Word has length 146 [2020-10-15 02:55:35,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:55:35,963 INFO L479 AbstractCegarLoop]: Abstraction has 3612 states and 5216 transitions. [2020-10-15 02:55:35,963 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 02:55:35,963 INFO L276 IsEmpty]: Start isEmpty. Operand 3612 states and 5216 transitions. [2020-10-15 02:55:35,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-10-15 02:55:35,974 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:55:35,975 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:55:35,975 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 02:55:35,975 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:55:35,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:55:35,976 INFO L82 PathProgramCache]: Analyzing trace with hash -1612159712, now seen corresponding path program 1 times [2020-10-15 02:55:35,976 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:55:35,977 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [518650286] [2020-10-15 02:55:35,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:55:36,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:55:36,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:36,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:36,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:36,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:36,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:36,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:36,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:36,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:37,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:37,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:38,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:38,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:40,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:41,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:55:41,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-15 02:55:41,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-15 02:55:41,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-15 02:55:41,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:55:41,012 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:55:41,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 02:55:41,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 02:55:41,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-15 02:55:41,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:55:41,430 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-15 02:55:41,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:55:41,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:55:41,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:41,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:55:41,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:55:41,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:55:41,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-15 02:55:41,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:55:41,463 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:55:41,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:55:41,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:55:41,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:55:41,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:55:41,583 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 02:55:41,587 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [518650286] [2020-10-15 02:55:41,587 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 02:55:41,588 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 02:55:41,588 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424328945] [2020-10-15 02:55:41,589 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 02:55:41,589 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:55:41,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 02:55:41,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 02:55:41,590 INFO L87 Difference]: Start difference. First operand 3612 states and 5216 transitions. Second operand 5 states. [2020-10-15 02:55:44,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:55:44,928 INFO L93 Difference]: Finished difference Result 9388 states and 13568 transitions. [2020-10-15 02:55:44,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 02:55:44,929 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 147 [2020-10-15 02:55:44,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:55:44,960 INFO L225 Difference]: With dead ends: 9388 [2020-10-15 02:55:44,961 INFO L226 Difference]: Without dead ends: 6302 [2020-10-15 02:55:44,968 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 02:55:44,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6302 states. [2020-10-15 02:55:45,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6302 to 6300. [2020-10-15 02:55:45,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6300 states. [2020-10-15 02:55:45,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6300 states to 6300 states and 8950 transitions. [2020-10-15 02:55:45,378 INFO L78 Accepts]: Start accepts. Automaton has 6300 states and 8950 transitions. Word has length 147 [2020-10-15 02:55:45,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:55:45,380 INFO L479 AbstractCegarLoop]: Abstraction has 6300 states and 8950 transitions. [2020-10-15 02:55:45,380 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 02:55:45,380 INFO L276 IsEmpty]: Start isEmpty. Operand 6300 states and 8950 transitions. [2020-10-15 02:55:45,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-15 02:55:45,392 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:55:45,392 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:55:45,392 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 02:55:45,393 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:55:45,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:55:45,393 INFO L82 PathProgramCache]: Analyzing trace with hash 148535654, now seen corresponding path program 1 times [2020-10-15 02:55:45,393 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:55:45,394 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2011346068] [2020-10-15 02:55:45,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:55:45,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:55:45,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:45,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:45,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:45,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:45,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:45,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:46,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:46,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:46,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:47,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:48,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:55:48,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-15 02:55:48,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-15 02:55:48,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3115 [2020-10-15 02:55:48,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:55:48,536 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:55:48,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 02:55:48,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 02:55:48,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-10-15 02:55:48,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:55:48,865 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-15 02:55:48,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:55:48,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:55:48,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:48,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:55:48,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:55:48,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:55:48,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-15 02:55:48,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:55:48,884 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:55:48,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:55:48,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:55:48,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:55:48,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:55:48,988 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 02:55:48,989 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2011346068] [2020-10-15 02:55:48,990 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 02:55:48,990 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 02:55:48,991 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694640307] [2020-10-15 02:55:48,991 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 02:55:48,992 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:55:48,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 02:55:48,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 02:55:48,992 INFO L87 Difference]: Start difference. First operand 6300 states and 8950 transitions. Second operand 5 states. [2020-10-15 02:55:52,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:55:52,097 INFO L93 Difference]: Finished difference Result 17570 states and 25003 transitions. [2020-10-15 02:55:52,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 02:55:52,098 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 148 [2020-10-15 02:55:52,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:55:52,150 INFO L225 Difference]: With dead ends: 17570 [2020-10-15 02:55:52,150 INFO L226 Difference]: Without dead ends: 12140 [2020-10-15 02:55:52,165 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 02:55:52,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12140 states. [2020-10-15 02:55:52,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12140 to 12138. [2020-10-15 02:55:52,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12138 states. [2020-10-15 02:55:52,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12138 states to 12138 states and 17005 transitions. [2020-10-15 02:55:52,968 INFO L78 Accepts]: Start accepts. Automaton has 12138 states and 17005 transitions. Word has length 148 [2020-10-15 02:55:52,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:55:52,968 INFO L479 AbstractCegarLoop]: Abstraction has 12138 states and 17005 transitions. [2020-10-15 02:55:52,968 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 02:55:52,968 INFO L276 IsEmpty]: Start isEmpty. Operand 12138 states and 17005 transitions. [2020-10-15 02:55:52,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-10-15 02:55:52,989 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:55:52,989 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:55:52,989 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 02:55:52,990 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:55:52,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:55:52,990 INFO L82 PathProgramCache]: Analyzing trace with hash 80155969, now seen corresponding path program 1 times [2020-10-15 02:55:52,990 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:55:52,991 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1702358357] [2020-10-15 02:55:52,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:55:53,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:55:53,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:53,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:53,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:53,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:53,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:53,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:55:53,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-15 02:55:53,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 02:55:53,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 769 [2020-10-15 02:55:53,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:55:53,784 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:55:53,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 02:55:53,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 02:55:53,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-15 02:55:53,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:55:54,045 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-15 02:55:54,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:55:54,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:55:54,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:55:54,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:55:54,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:55:54,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:55:54,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 02:55:54,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:55:54,061 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:55:54,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:55:54,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:55:54,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:55:54,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:55:54,138 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 02:55:54,138 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1702358357] [2020-10-15 02:55:54,139 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 02:55:54,139 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 02:55:54,139 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218901361] [2020-10-15 02:55:54,140 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 02:55:54,140 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:55:54,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 02:55:54,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 02:55:54,141 INFO L87 Difference]: Start difference. First operand 12138 states and 17005 transitions. Second operand 5 states. [2020-10-15 02:55:57,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:55:57,339 INFO L93 Difference]: Finished difference Result 35199 states and 49056 transitions. [2020-10-15 02:55:57,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 02:55:57,339 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 149 [2020-10-15 02:55:57,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:55:57,399 INFO L225 Difference]: With dead ends: 35199 [2020-10-15 02:55:57,399 INFO L226 Difference]: Without dead ends: 23315 [2020-10-15 02:55:57,428 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 02:55:57,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23315 states. [2020-10-15 02:55:59,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23315 to 23313. [2020-10-15 02:55:59,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23313 states. [2020-10-15 02:55:59,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23313 states to 23313 states and 32108 transitions. [2020-10-15 02:55:59,161 INFO L78 Accepts]: Start accepts. Automaton has 23313 states and 32108 transitions. Word has length 149 [2020-10-15 02:55:59,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:55:59,161 INFO L479 AbstractCegarLoop]: Abstraction has 23313 states and 32108 transitions. [2020-10-15 02:55:59,161 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 02:55:59,162 INFO L276 IsEmpty]: Start isEmpty. Operand 23313 states and 32108 transitions. [2020-10-15 02:55:59,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-10-15 02:55:59,191 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:55:59,191 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:55:59,192 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 02:55:59,192 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:55:59,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:55:59,192 INFO L82 PathProgramCache]: Analyzing trace with hash -1163108058, now seen corresponding path program 1 times [2020-10-15 02:55:59,193 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:55:59,193 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1338657980] [2020-10-15 02:55:59,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:55:59,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-15 02:55:59,234 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-15 02:55:59,234 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-15 02:55:59,239 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 02:55:59,285 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 02:55:59 BoogieIcfgContainer [2020-10-15 02:55:59,285 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-15 02:55:59,288 INFO L168 Benchmark]: Toolchain (without parser) took 57761.72 ms. Allocated memory was 146.8 MB in the beginning and 1.1 GB in the end (delta: 956.3 MB). Free memory was 101.7 MB in the beginning and 105.6 MB in the end (delta: -3.9 MB). Peak memory consumption was 952.4 MB. Max. memory is 7.1 GB. [2020-10-15 02:55:59,289 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 146.8 MB. Free memory was 121.4 MB in the beginning and 120.9 MB in the end (delta: 419.9 kB). Peak memory consumption was 419.9 kB. Max. memory is 7.1 GB. [2020-10-15 02:55:59,289 INFO L168 Benchmark]: CACSL2BoogieTranslator took 869.18 ms. Allocated memory was 146.8 MB in the beginning and 203.4 MB in the end (delta: 56.6 MB). Free memory was 101.3 MB in the beginning and 166.3 MB in the end (delta: -65.0 MB). Peak memory consumption was 24.8 MB. Max. memory is 7.1 GB. [2020-10-15 02:55:59,290 INFO L168 Benchmark]: Boogie Preprocessor took 88.44 ms. Allocated memory is still 203.4 MB. Free memory was 166.3 MB in the beginning and 162.2 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. [2020-10-15 02:55:59,291 INFO L168 Benchmark]: RCFGBuilder took 1479.57 ms. Allocated memory was 203.4 MB in the beginning and 237.0 MB in the end (delta: 33.6 MB). Free memory was 162.2 MB in the beginning and 152.8 MB in the end (delta: 9.4 MB). Peak memory consumption was 77.5 MB. Max. memory is 7.1 GB. [2020-10-15 02:55:59,292 INFO L168 Benchmark]: TraceAbstraction took 55315.88 ms. Allocated memory was 237.0 MB in the beginning and 1.1 GB in the end (delta: 866.1 MB). Free memory was 152.8 MB in the beginning and 105.6 MB in the end (delta: 47.2 MB). Peak memory consumption was 913.3 MB. Max. memory is 7.1 GB. [2020-10-15 02:55:59,297 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 146.8 MB. Free memory was 121.4 MB in the beginning and 120.9 MB in the end (delta: 419.9 kB). Peak memory consumption was 419.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 869.18 ms. Allocated memory was 146.8 MB in the beginning and 203.4 MB in the end (delta: 56.6 MB). Free memory was 101.3 MB in the beginning and 166.3 MB in the end (delta: -65.0 MB). Peak memory consumption was 24.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 88.44 ms. Allocated memory is still 203.4 MB. Free memory was 166.3 MB in the beginning and 162.2 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1479.57 ms. Allocated memory was 203.4 MB in the beginning and 237.0 MB in the end (delta: 33.6 MB). Free memory was 162.2 MB in the beginning and 152.8 MB in the end (delta: 9.4 MB). Peak memory consumption was 77.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 55315.88 ms. Allocated memory was 237.0 MB in the beginning and 1.1 GB in the end (delta: 866.1 MB). Free memory was 152.8 MB in the beginning and 105.6 MB in the end (delta: 47.2 MB). Peak memory consumption was 913.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 832]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L1] int __return_main; [L15] msg_t nomsg = (msg_t )-1; [L16] port_t p12 = 0; [L17] char p12_old = '\x0'; [L18] char p12_new = '\x0'; [L19] _Bool ep12 = 0; [L20] port_t p13 = 0; [L21] char p13_old = '\x0'; [L22] char p13_new = '\x0'; [L23] _Bool ep13 = 0; [L24] port_t p21 = 0; [L25] char p21_old = '\x0'; [L26] char p21_new = '\x0'; [L27] _Bool ep21 = 0; [L28] port_t p23 = 0; [L29] char p23_old = '\x0'; [L30] char p23_new = '\x0'; [L31] _Bool ep23 = 0; [L32] port_t p31 = 0; [L33] char p31_old = '\x0'; [L34] char p31_new = '\x0'; [L35] _Bool ep31 = 0; [L36] port_t p32 = 0; [L37] char p32_old = '\x0'; [L38] char p32_new = '\x0'; [L39] _Bool ep32 = 0; [L40] char id1 = '\x0'; [L41] unsigned char r1 = '\x0'; [L42] char st1 = '\x0'; [L43] char nl1 = '\x0'; [L44] char m1 = '\x0'; [L45] char max1 = '\x0'; [L46] _Bool mode1 = 0; [L47] char id2 = '\x0'; [L48] unsigned char r2 = '\x0'; [L49] char st2 = '\x0'; [L50] char nl2 = '\x0'; [L51] char m2 = '\x0'; [L52] char max2 = '\x0'; [L53] _Bool mode2 = 0; [L54] char id3 = '\x0'; [L55] unsigned char r3 = '\x0'; [L56] char st3 = '\x0'; [L57] char nl3 = '\x0'; [L58] char m3 = '\x0'; [L59] char max3 = '\x0'; [L60] _Bool mode3 = 0; [L64] void (*nodes[3])() = { &node1, &node2, &node3 }; [L68] int __return_1718; [L69] int __return_1846; [L70] int __return_1964; [L71] int __return_2082; [L72] int __return_2205; [L73] int __return_2315; [L76] int main__c1; [L77] int main__i2; [L78] main__c1 = 0 [L79] ep12 = __VERIFIER_nondet_bool() [L80] ep13 = __VERIFIER_nondet_bool() [L81] ep21 = __VERIFIER_nondet_bool() [L82] ep23 = __VERIFIER_nondet_bool() [L83] ep31 = __VERIFIER_nondet_bool() [L84] ep32 = __VERIFIER_nondet_bool() [L85] id1 = __VERIFIER_nondet_char() [L86] r1 = __VERIFIER_nondet_uchar() [L87] st1 = __VERIFIER_nondet_char() [L88] nl1 = __VERIFIER_nondet_char() [L89] m1 = __VERIFIER_nondet_char() [L90] max1 = __VERIFIER_nondet_char() [L91] mode1 = __VERIFIER_nondet_bool() [L92] id2 = __VERIFIER_nondet_char() [L93] r2 = __VERIFIER_nondet_uchar() [L94] st2 = __VERIFIER_nondet_char() [L95] nl2 = __VERIFIER_nondet_char() [L96] m2 = __VERIFIER_nondet_char() [L97] max2 = __VERIFIER_nondet_char() [L98] mode2 = __VERIFIER_nondet_bool() [L99] id3 = __VERIFIER_nondet_char() [L100] r3 = __VERIFIER_nondet_uchar() [L101] st3 = __VERIFIER_nondet_char() [L102] nl3 = __VERIFIER_nondet_char() [L103] m3 = __VERIFIER_nondet_char() [L104] max3 = __VERIFIER_nondet_char() [L105] mode3 = __VERIFIER_nondet_bool() [L107] _Bool init__r121; [L108] _Bool init__r131; [L109] _Bool init__r211; [L110] _Bool init__r231; [L111] _Bool init__r311; [L112] _Bool init__r321; [L113] _Bool init__r122; [L114] int init__tmp; [L115] _Bool init__r132; [L116] int init__tmp___0; [L117] _Bool init__r212; [L118] int init__tmp___1; [L119] _Bool init__r232; [L120] int init__tmp___2; [L121] _Bool init__r312; [L122] int init__tmp___3; [L123] _Bool init__r322; [L124] int init__tmp___4; [L125] int init__tmp___5; [L126] init__r121 = ep12 [L127] init__r131 = ep13 [L128] init__r211 = ep21 [L129] init__r231 = ep23 [L130] init__r311 = ep31 [L131] init__r321 = ep32 [L132] COND FALSE !(!(init__r121 == 0)) [L2244] COND FALSE !(!(init__r131 == 0)) [L2260] init__tmp = 0 [L136] init__r122 = (_Bool)init__tmp [L137] COND FALSE !(!(init__r131 == 0)) [L2221] COND FALSE !(!(init__r121 == 0)) [L2237] init__tmp___0 = 0 [L141] init__r132 = (_Bool)init__tmp___0 [L142] COND FALSE !(!(init__r211 == 0)) [L2198] COND FALSE !(!(init__r231 == 0)) [L2214] init__tmp___1 = 0 [L146] init__r212 = (_Bool)init__tmp___1 [L147] COND FALSE !(!(init__r231 == 0)) [L2175] COND FALSE !(!(init__r211 == 0)) [L2191] init__tmp___2 = 0 [L151] init__r232 = (_Bool)init__tmp___2 [L152] COND FALSE !(!(init__r311 == 0)) [L2152] COND FALSE !(!(init__r321 == 0)) [L2168] init__tmp___3 = 0 [L156] init__r312 = (_Bool)init__tmp___3 [L157] COND FALSE !(!(init__r321 == 0)) [L2129] COND FALSE !(!(init__r311 == 0)) [L2145] init__tmp___4 = 0 [L161] init__r322 = (_Bool)init__tmp___4 [L162] COND TRUE ((int)id1) != ((int)id2) [L164] COND TRUE ((int)id1) != ((int)id3) [L166] COND TRUE ((int)id2) != ((int)id3) [L168] COND TRUE ((int)id1) >= 0 [L170] COND TRUE ((int)id2) >= 0 [L172] COND TRUE ((int)id3) >= 0 [L174] COND TRUE ((int)r1) == 0 [L176] COND TRUE ((int)r2) == 0 [L178] COND TRUE ((int)r3) == 0 [L180] COND TRUE ((int)max1) == ((int)id1) [L182] COND TRUE ((int)max2) == ((int)id2) [L184] COND TRUE ((int)max3) == ((int)id3) [L186] COND TRUE ((int)st1) == 0 [L188] COND TRUE ((int)st2) == 0 [L190] COND TRUE ((int)st3) == 0 [L192] COND TRUE ((int)nl1) == 0 [L194] COND TRUE ((int)nl2) == 0 [L196] COND TRUE ((int)nl3) == 0 [L198] COND TRUE ((int)mode1) == 0 [L200] COND TRUE ((int)mode2) == 0 [L202] COND TRUE ((int)mode3) == 0 [L204] init__tmp___5 = 1 [L205] __return_1718 = init__tmp___5 [L206] main__i2 = __return_1718 [L207] COND TRUE main__i2 != 0 [L209] p12_old = nomsg [L210] p12_new = nomsg [L211] p13_old = nomsg [L212] p13_new = nomsg [L213] p21_old = nomsg [L214] p21_new = nomsg [L215] p23_old = nomsg [L216] p23_new = nomsg [L217] p31_old = nomsg [L218] p31_new = nomsg [L219] p32_old = nomsg [L220] p32_new = nomsg [L221] main__i2 = 0 [L223] COND FALSE !(!(mode1 == 0)) [L229] COND TRUE ((int)r1) < 2 [L231] COND FALSE !(!(ep12 == 0)) [L242] COND FALSE !(!(ep13 == 0)) [L253] mode1 = 1 [L255] COND FALSE !(!(mode2 == 0)) [L261] COND TRUE ((int)r2) < 2 [L263] COND FALSE !(!(ep21 == 0)) [L274] COND FALSE !(!(ep23 == 0)) [L285] mode2 = 1 [L287] COND FALSE !(!(mode3 == 0)) [L293] COND TRUE ((int)r3) < 2 [L295] COND FALSE !(!(ep31 == 0)) [L306] COND FALSE !(!(ep32 == 0)) [L317] mode3 = 1 [L318] p12_old = p12_new [L319] p12_new = nomsg [L320] p13_old = p13_new [L321] p13_new = nomsg [L322] p21_old = p21_new [L323] p21_new = nomsg [L324] p23_old = p23_new [L325] p23_new = nomsg [L326] p31_old = p31_new [L327] p31_new = nomsg [L328] p32_old = p32_new [L329] p32_new = nomsg [L331] int check__tmp; [L332] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L334] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L336] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L338] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L340] COND FALSE !(((int)r1) >= 2) [L346] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L348] COND TRUE ((int)r1) < 2 [L350] COND FALSE !(((int)r1) >= 2) [L356] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L358] COND TRUE ((int)r1) < 2 [L360] check__tmp = 1 [L361] __return_1846 = check__tmp [L362] main__c1 = __return_1846 [L364] _Bool __tmp_1; [L365] __tmp_1 = main__c1 [L366] _Bool assert__arg; [L367] assert__arg = __tmp_1 [L368] COND FALSE !(assert__arg == 0) [L375] COND TRUE !(mode1 == 0) [L377] COND FALSE !(r1 == 255) [L383] r1 = r1 + 1 [L384] COND FALSE !(!(ep21 == 0)) [L392] COND FALSE !(!(ep31 == 0)) [L400] COND FALSE !(((int)r1) == 2) [L406] mode1 = 0 [L408] COND TRUE !(mode2 == 0) [L410] COND FALSE !(r2 == 255) [L416] r2 = r2 + 1 [L417] COND FALSE !(!(ep12 == 0)) [L425] COND FALSE !(!(ep32 == 0)) [L433] COND FALSE !(((int)r2) == 2) [L439] mode2 = 0 [L441] COND TRUE !(mode3 == 0) [L443] COND FALSE !(r3 == 255) [L449] r3 = r3 + 1 [L450] COND FALSE !(!(ep13 == 0)) [L458] COND FALSE !(!(ep23 == 0)) [L466] COND FALSE !(((int)r3) == 2) [L472] mode3 = 0 [L473] p12_old = p12_new [L474] p12_new = nomsg [L475] p13_old = p13_new [L476] p13_new = nomsg [L477] p21_old = p21_new [L478] p21_new = nomsg [L479] p23_old = p23_new [L480] p23_new = nomsg [L481] p31_old = p31_new [L482] p31_new = nomsg [L483] p32_old = p32_new [L484] p32_new = nomsg [L486] int check__tmp; [L487] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L489] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L491] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L493] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L495] COND FALSE !(((int)r1) >= 2) [L501] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L503] COND TRUE ((int)r1) < 2 [L505] COND FALSE !(((int)r1) >= 2) [L511] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L513] COND TRUE ((int)r1) < 2 [L515] check__tmp = 1 [L516] __return_1964 = check__tmp [L517] main__c1 = __return_1964 [L519] _Bool __tmp_2; [L520] __tmp_2 = main__c1 [L521] _Bool assert__arg; [L522] assert__arg = __tmp_2 [L523] COND FALSE !(assert__arg == 0) [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_2082 = check__tmp [L669] main__c1 = __return_2082 [L671] _Bool __tmp_3; [L672] __tmp_3 = main__c1 [L673] _Bool assert__arg; [L674] assert__arg = __tmp_3 [L675] COND FALSE !(assert__arg == 0) [L682] COND TRUE !(mode1 == 0) [L684] COND FALSE !(r1 == 255) [L690] r1 = r1 + 1 [L691] COND FALSE !(!(ep21 == 0)) [L699] COND FALSE !(!(ep31 == 0)) [L707] COND TRUE ((int)r1) == 2 [L709] COND TRUE ((int)max1) == ((int)id1) [L711] st1 = 1 [L713] mode1 = 0 [L715] COND TRUE !(mode2 == 0) [L717] COND FALSE !(r2 == 255) [L723] r2 = r2 + 1 [L724] COND FALSE !(!(ep12 == 0)) [L732] COND FALSE !(!(ep32 == 0)) [L740] COND TRUE ((int)r2) == 2 [L742] COND TRUE ((int)max2) == ((int)id2) [L744] st2 = 1 [L746] mode2 = 0 [L748] COND TRUE !(mode3 == 0) [L750] COND FALSE !(r3 == 255) [L756] r3 = r3 + 1 [L757] COND FALSE !(!(ep13 == 0)) [L765] COND FALSE !(!(ep23 == 0)) [L773] COND TRUE ((int)r3) == 2 [L775] COND TRUE ((int)max3) == ((int)id3) [L777] st3 = 1 [L779] mode3 = 0 [L780] p12_old = p12_new [L781] p12_new = nomsg [L782] p13_old = p13_new [L783] p13_new = nomsg [L784] p21_old = p21_new [L785] p21_new = nomsg [L786] p23_old = p23_new [L787] p23_new = nomsg [L788] p31_old = p31_new [L789] p31_new = nomsg [L790] p32_old = p32_new [L791] p32_new = nomsg [L793] int check__tmp; [L794] COND FALSE !(((((int)st1) + ((int)st2)) + ((int)st3)) <= 1) [L1433] check__tmp = 0 [L822] __return_2205 = check__tmp [L823] main__c1 = __return_2205 [L826] _Bool __tmp_4; [L827] __tmp_4 = main__c1 [L828] _Bool assert__arg; [L829] assert__arg = __tmp_4 [L830] COND TRUE assert__arg == 0 [L832] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 315 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 55.1s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 18.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 5065 SDtfs, 5315 SDslu, 2858 SDs, 0 SdLazy, 5512 SolverSat, 97 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 12.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 48 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23313occurred 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: 3.4s AutomataMinimizationTime, 7 MinimizatonAttempts, 14 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 31.4s InterpolantComputationTime, 1173 NumberOfCodeBlocks, 1173 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 1016 ConstructedInterpolants, 0 QuantifiedInterpolants, 1120768 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...