/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 SingleStatement --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=0.5 --traceabstraction.additional.smt.options log-additional-information=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+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 14:49:40,971 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 14:49:40,975 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 14:49:41,024 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 14:49:41,025 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 14:49:41,036 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 14:49:41,039 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 14:49:41,043 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 14:49:41,047 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 14:49:41,051 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 14:49:41,052 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 14:49:41,053 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 14:49:41,054 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 14:49:41,057 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 14:49:41,060 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 14:49:41,062 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 14:49:41,064 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 14:49:41,065 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 14:49:41,067 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 14:49:41,077 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 14:49:41,080 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 14:49:41,081 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 14:49:41,083 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 14:49:41,084 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 14:49:41,087 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 14:49:41,087 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 14:49:41,087 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 14:49:41,091 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 14:49:41,092 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 14:49:41,094 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 14:49:41,094 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 14:49:41,095 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 14:49:41,096 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 14:49:41,097 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 14:49:41,099 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 14:49:41,099 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 14:49:41,100 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 14:49:41,101 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 14:49:41,101 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 14:49:41,102 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 14:49:41,104 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 14:49:41,105 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 [2020-09-25 14:49:41,158 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 14:49:41,158 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 14:49:41,161 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 14:49:41,161 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 14:49:41,161 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 14:49:41,162 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 14:49:41,162 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 14:49:41,162 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 14:49:41,163 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 14:49:41,163 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 14:49:41,164 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 14:49:41,164 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 14:49:41,165 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 14:49:41,165 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 14:49:41,165 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 14:49:41,166 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 14:49:41,166 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 14:49:41,166 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 14:49:41,166 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 14:49:41,167 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 14:49:41,167 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 14:49:41,167 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:49:41,167 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 14:49:41,167 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 14:49:41,168 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 14:49:41,168 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 14:49:41,168 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 14:49:41,168 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 14:49:41,169 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 14:49:41,169 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 -> SingleStatement 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=0.5;log-additional-information=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=0.5;log-additional-information=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=0.5;log-additional-information=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=0.5;log-additional-information=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=0.5;log-additional-information=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=0.5;log-additional-information=true; [2020-09-25 14:49:41,698 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 14:49:41,724 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 14:49:41,729 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 14:49:41,731 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 14:49:41,732 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 14:49:41,733 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-09-25 14:49:41,816 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8ab7a7865/21c2a457b1c94d42b380f56d0126df22/FLAGe29e7db6f [2020-09-25 14:49:42,440 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 14:49:42,441 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-09-25 14:49:42,463 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8ab7a7865/21c2a457b1c94d42b380f56d0126df22/FLAGe29e7db6f [2020-09-25 14:49:42,644 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8ab7a7865/21c2a457b1c94d42b380f56d0126df22 [2020-09-25 14:49:42,659 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 14:49:42,666 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 14:49:42,667 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 14:49:42,668 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 14:49:42,672 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 14:49:42,673 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:49:42" (1/1) ... [2020-09-25 14:49:42,678 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10140435 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:49:42, skipping insertion in model container [2020-09-25 14:49:42,678 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:49:42" (1/1) ... [2020-09-25 14:49:42,688 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 14:49:42,760 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 14:49:43,518 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:49:43,545 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 14:49:43,781 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:49:43,812 INFO L208 MainTranslator]: Completed translation [2020-09-25 14:49:43,814 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:49:43 WrapperNode [2020-09-25 14:49:43,814 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 14:49:43,815 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 14:49:43,816 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 14:49:43,816 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 14:49:43,836 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:49:43" (1/1) ... [2020-09-25 14:49:43,838 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:49:43" (1/1) ... [2020-09-25 14:49:43,889 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:49:43" (1/1) ... [2020-09-25 14:49:43,890 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:49:43" (1/1) ... [2020-09-25 14:49:43,925 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:49:43" (1/1) ... [2020-09-25 14:49:43,957 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:49:43" (1/1) ... [2020-09-25 14:49:43,967 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:49:43" (1/1) ... [2020-09-25 14:49:43,978 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 14:49:43,978 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 14:49:43,979 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 14:49:43,979 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 14:49:43,980 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:49:43" (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 [2020-09-25 14:49:44,079 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 14:49:44,079 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 14:49:44,080 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-25 14:49:44,080 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 14:49:44,080 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 14:49:44,080 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-25 14:49:44,080 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-09-25 14:49:44,082 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-09-25 14:49:44,082 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-09-25 14:49:44,082 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 14:49:44,082 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-25 14:49:44,083 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-09-25 14:49:44,083 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-09-25 14:49:44,083 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-09-25 14:49:44,084 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-09-25 14:49:44,085 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-09-25 14:49:44,085 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-09-25 14:49:44,086 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-09-25 14:49:44,086 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 14:49:44,087 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 14:49:44,087 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 14:49:46,279 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 14:49:46,280 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 14:49:46,302 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:49:46 BoogieIcfgContainer [2020-09-25 14:49:46,302 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 14:49:46,303 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 14:49:46,303 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 14:49:46,308 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 14:49:46,308 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:49:42" (1/3) ... [2020-09-25 14:49:46,310 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31313f69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:49:46, skipping insertion in model container [2020-09-25 14:49:46,310 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:49:43" (2/3) ... [2020-09-25 14:49:46,310 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31313f69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:49:46, skipping insertion in model container [2020-09-25 14:49:46,311 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:49:46" (3/3) ... [2020-09-25 14:49:46,314 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-09-25 14:49:46,326 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 14:49:46,345 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-09-25 14:49:46,365 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-09-25 14:49:46,401 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 14:49:46,401 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 14:49:46,401 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 14:49:46,401 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 14:49:46,401 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 14:49:46,401 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 14:49:46,401 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 14:49:46,401 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 14:49:46,447 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states. [2020-09-25 14:49:46,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2020-09-25 14:49:46,487 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:49:46,489 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:49:46,490 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:49:46,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:49:46,499 INFO L82 PathProgramCache]: Analyzing trace with hash -1272027086, now seen corresponding path program 1 times [2020-09-25 14:49:46,511 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:49:46,512 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1633670873] [2020-09-25 14:49:46,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:49:47,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:49:47,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:49:47,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:49:48,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:49:48,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:49:48,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:49:48,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:49:49,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:49:49,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:49:52,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:49:52,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 421 [2020-09-25 14:49:52,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 14:49:52,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5044 [2020-09-25 14:49:52,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:49:52,122 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:49:52,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:49:52,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 199 [2020-09-25 14:49:52,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 188 [2020-09-25 14:49:52,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 14:49:52,829 WARN L193 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-25 14:49:52,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:49:52,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:49:52,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:49:52,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:49:52,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 14:49:52,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:49:52,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-09-25 14:49:52,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:49:52,926 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:49:52,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:49:52,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:49:52,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:49:52,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 14:49:53,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:49:53,393 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1633670873] [2020-09-25 14:49:53,396 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:49:53,397 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 14:49:53,398 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34886172] [2020-09-25 14:49:53,412 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 14:49:53,413 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:49:53,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 14:49:53,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 14:49:53,444 INFO L87 Difference]: Start difference. First operand 1123 states. Second operand 4 states. [2020-09-25 14:49:57,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:49:57,969 INFO L93 Difference]: Finished difference Result 1830 states and 2374 transitions. [2020-09-25 14:49:57,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 14:49:57,972 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 414 [2020-09-25 14:49:57,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:49:58,004 INFO L225 Difference]: With dead ends: 1830 [2020-09-25 14:49:58,005 INFO L226 Difference]: Without dead ends: 1312 [2020-09-25 14:49:58,017 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 14:49:58,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1312 states. [2020-09-25 14:49:58,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1312 to 1303. [2020-09-25 14:49:58,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1303 states. [2020-09-25 14:49:58,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1303 states to 1303 states and 1563 transitions. [2020-09-25 14:49:58,168 INFO L78 Accepts]: Start accepts. Automaton has 1303 states and 1563 transitions. Word has length 414 [2020-09-25 14:49:58,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:49:58,170 INFO L479 AbstractCegarLoop]: Abstraction has 1303 states and 1563 transitions. [2020-09-25 14:49:58,170 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 14:49:58,170 INFO L276 IsEmpty]: Start isEmpty. Operand 1303 states and 1563 transitions. [2020-09-25 14:49:58,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2020-09-25 14:49:58,184 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:49:58,184 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:49:58,184 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 14:49:58,185 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:49:58,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:49:58,185 INFO L82 PathProgramCache]: Analyzing trace with hash -1791071559, now seen corresponding path program 1 times [2020-09-25 14:49:58,185 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:49:58,186 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1525323935] [2020-09-25 14:49:58,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:49:58,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:49:58,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:49:58,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:49:58,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:49:58,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:49:59,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:49:59,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:49:59,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:49:59,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:50:03,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:50:03,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 421 [2020-09-25 14:50:03,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 14:50:03,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5059 [2020-09-25 14:50:03,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:50:03,365 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:50:03,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 14:50:03,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 167 [2020-09-25 14:50:03,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-25 14:50:03,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:50:03,890 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-25 14:50:03,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:50:03,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:50:03,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:50:03,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:50:03,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 14:50:03,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:50:03,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-09-25 14:50:03,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:50:03,962 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:50:03,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:50:03,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:50:03,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:50:03,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:50:04,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:50:04,226 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1525323935] [2020-09-25 14:50:04,227 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:50:04,227 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 14:50:04,227 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103677671] [2020-09-25 14:50:04,231 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:50:04,231 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:50:04,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:50:04,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:50:04,232 INFO L87 Difference]: Start difference. First operand 1303 states and 1563 transitions. Second operand 5 states. [2020-09-25 14:50:11,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:50:11,614 INFO L93 Difference]: Finished difference Result 3465 states and 4205 transitions. [2020-09-25 14:50:11,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 14:50:11,615 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 414 [2020-09-25 14:50:11,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:50:11,629 INFO L225 Difference]: With dead ends: 3465 [2020-09-25 14:50:11,629 INFO L226 Difference]: Without dead ends: 2364 [2020-09-25 14:50:11,634 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 [2020-09-25 14:50:11,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2364 states. [2020-09-25 14:50:11,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2364 to 2239. [2020-09-25 14:50:11,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2239 states. [2020-09-25 14:50:11,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2239 states to 2239 states and 2723 transitions. [2020-09-25 14:50:11,722 INFO L78 Accepts]: Start accepts. Automaton has 2239 states and 2723 transitions. Word has length 414 [2020-09-25 14:50:11,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:50:11,723 INFO L479 AbstractCegarLoop]: Abstraction has 2239 states and 2723 transitions. [2020-09-25 14:50:11,723 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 14:50:11,723 INFO L276 IsEmpty]: Start isEmpty. Operand 2239 states and 2723 transitions. [2020-09-25 14:50:11,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 416 [2020-09-25 14:50:11,730 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:50:11,730 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:50:11,731 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 14:50:11,731 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:50:11,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:50:11,732 INFO L82 PathProgramCache]: Analyzing trace with hash 129832887, now seen corresponding path program 1 times [2020-09-25 14:50:11,732 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:50:11,732 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [931928432] [2020-09-25 14:50:11,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:50:11,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:50:11,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:50:11,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:50:12,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:50:12,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:50:12,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:50:12,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:50:13,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:50:15,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:50:16,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:50:16,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:50:16,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 422 [2020-09-25 14:50:16,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 14:50:16,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5049 [2020-09-25 14:50:16,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:50:16,846 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:50:16,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 14:50:16,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 166 [2020-09-25 14:50:16,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-09-25 14:50:16,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:50:17,283 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-25 14:50:17,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:50:17,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:50:17,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:50:17,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:50:17,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 14:50:17,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:50:17,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-09-25 14:50:17,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:50:17,338 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:50:17,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:50:17,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:50:17,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:50:17,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:50:17,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:50:17,748 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [931928432] [2020-09-25 14:50:17,749 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:50:17,749 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 14:50:17,749 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714860636] [2020-09-25 14:50:17,750 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:50:17,750 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:50:17,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:50:17,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:50:17,752 INFO L87 Difference]: Start difference. First operand 2239 states and 2723 transitions. Second operand 5 states. [2020-09-25 14:50:24,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:50:24,508 INFO L93 Difference]: Finished difference Result 6154 states and 7542 transitions. [2020-09-25 14:50:24,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 14:50:24,509 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 415 [2020-09-25 14:50:24,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:50:24,533 INFO L225 Difference]: With dead ends: 6154 [2020-09-25 14:50:24,533 INFO L226 Difference]: Without dead ends: 4184 [2020-09-25 14:50:24,538 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 [2020-09-25 14:50:24,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4184 states. [2020-09-25 14:50:24,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4184 to 4071. [2020-09-25 14:50:24,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4071 states. [2020-09-25 14:50:24,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4071 states to 4071 states and 4977 transitions. [2020-09-25 14:50:24,713 INFO L78 Accepts]: Start accepts. Automaton has 4071 states and 4977 transitions. Word has length 415 [2020-09-25 14:50:24,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:50:24,715 INFO L479 AbstractCegarLoop]: Abstraction has 4071 states and 4977 transitions. [2020-09-25 14:50:24,719 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 14:50:24,719 INFO L276 IsEmpty]: Start isEmpty. Operand 4071 states and 4977 transitions. [2020-09-25 14:50:24,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 417 [2020-09-25 14:50:24,727 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:50:24,728 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:50:24,728 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 14:50:24,728 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:50:24,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:50:24,729 INFO L82 PathProgramCache]: Analyzing trace with hash -1395656679, now seen corresponding path program 1 times [2020-09-25 14:50:24,730 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:50:24,730 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [371622471] [2020-09-25 14:50:24,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:50:24,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:50:24,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:50:24,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:50:25,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:50:25,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:50:25,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:50:26,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:50:26,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:50:26,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:50:29,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:50:29,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:50:29,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:50:29,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:50:29,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 423 [2020-09-25 14:50:29,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 14:50:29,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-09-25 14:50:29,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:50:29,795 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:50:29,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 14:50:29,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 165 [2020-09-25 14:50:29,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 165 [2020-09-25 14:50:29,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1