/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=DEEPEST --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_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 01:13:06,191 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 01:13:06,197 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 01:13:06,222 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 01:13:06,222 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 01:13:06,223 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 01:13:06,224 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 01:13:06,226 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 01:13:06,228 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 01:13:06,228 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 01:13:06,229 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 01:13:06,231 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 01:13:06,231 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 01:13:06,232 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 01:13:06,233 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 01:13:06,234 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 01:13:06,235 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 01:13:06,236 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 01:13:06,237 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 01:13:06,239 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 01:13:06,240 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 01:13:06,242 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 01:13:06,243 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 01:13:06,243 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 01:13:06,246 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 01:13:06,246 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 01:13:06,246 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 01:13:06,247 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 01:13:06,248 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 01:13:06,249 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 01:13:06,249 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 01:13:06,250 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 01:13:06,250 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 01:13:06,251 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 01:13:06,252 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 01:13:06,253 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 01:13:06,253 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 01:13:06,253 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 01:13:06,254 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 01:13:06,255 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 01:13:06,255 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 01:13:06,256 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 01:13:06,303 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 01:13:06,303 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 01:13:06,305 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 01:13:06,305 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 01:13:06,306 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 01:13:06,306 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 01:13:06,306 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 01:13:06,306 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 01:13:06,307 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 01:13:06,307 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 01:13:06,308 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 01:13:06,308 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 01:13:06,308 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 01:13:06,309 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 01:13:06,309 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 01:13:06,309 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 01:13:06,310 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 01:13:06,310 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 01:13:06,310 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 01:13:06,310 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 01:13:06,310 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 01:13:06,311 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 01:13:06,311 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 01:13:06,311 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 01:13:06,311 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 01:13:06,311 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 01:13:06,312 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 01:13:06,312 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 01:13:06,312 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 01:13:06,312 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=DEEPEST;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=DEEPEST;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=DEEPEST;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=DEEPEST;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=DEEPEST;log-additional-information=true; [2020-09-25 01:13:06,777 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 01:13:06,805 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 01:13:06,809 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 01:13:06,812 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 01:13:06,812 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 01:13:06,813 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2020-09-25 01:13:06,906 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d7b0ff03a/294716001aa2428882fdb965c4c97a96/FLAG1a76257f3 [2020-09-25 01:13:07,497 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 01:13:07,498 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2020-09-25 01:13:07,521 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d7b0ff03a/294716001aa2428882fdb965c4c97a96/FLAG1a76257f3 [2020-09-25 01:13:07,766 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d7b0ff03a/294716001aa2428882fdb965c4c97a96 [2020-09-25 01:13:07,778 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 01:13:07,784 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 01:13:07,785 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 01:13:07,785 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 01:13:07,789 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 01:13:07,790 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:13:07" (1/1) ... [2020-09-25 01:13:07,794 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b134fed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:13:07, skipping insertion in model container [2020-09-25 01:13:07,795 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:13:07" (1/1) ... [2020-09-25 01:13:07,804 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 01:13:07,875 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 01:13:08,512 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 01:13:08,527 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 01:13:08,973 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 01:13:09,001 INFO L208 MainTranslator]: Completed translation [2020-09-25 01:13:09,002 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:13:09 WrapperNode [2020-09-25 01:13:09,002 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 01:13:09,003 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 01:13:09,003 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 01:13:09,003 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 01:13:09,017 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:13:09" (1/1) ... [2020-09-25 01:13:09,018 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:13:09" (1/1) ... [2020-09-25 01:13:09,036 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:13:09" (1/1) ... [2020-09-25 01:13:09,036 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:13:09" (1/1) ... [2020-09-25 01:13:09,064 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:13:09" (1/1) ... [2020-09-25 01:13:09,087 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:13:09" (1/1) ... [2020-09-25 01:13:09,091 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:13:09" (1/1) ... [2020-09-25 01:13:09,099 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 01:13:09,099 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 01:13:09,100 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 01:13:09,100 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 01:13:09,101 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:13:09" (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 01:13:09,204 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 01:13:09,204 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 01:13:09,204 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-25 01:13:09,205 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 01:13:09,205 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 01:13:09,205 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-25 01:13:09,205 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-09-25 01:13:09,206 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-09-25 01:13:09,207 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 01:13:09,207 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-25 01:13:09,207 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-09-25 01:13:09,208 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-09-25 01:13:09,208 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-09-25 01:13:09,208 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-09-25 01:13:09,208 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-09-25 01:13:09,209 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-09-25 01:13:09,209 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-09-25 01:13:09,210 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 01:13:09,210 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 01:13:09,210 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 01:13:10,806 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 01:13:10,807 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 01:13:10,818 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:13:10 BoogieIcfgContainer [2020-09-25 01:13:10,818 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 01:13:10,820 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 01:13:10,820 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 01:13:10,824 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 01:13:10,824 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:13:07" (1/3) ... [2020-09-25 01:13:10,825 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4708a51e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:13:10, skipping insertion in model container [2020-09-25 01:13:10,825 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:13:09" (2/3) ... [2020-09-25 01:13:10,826 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4708a51e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:13:10, skipping insertion in model container [2020-09-25 01:13:10,826 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:13:10" (3/3) ... [2020-09-25 01:13:10,828 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2020-09-25 01:13:10,840 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 01:13:10,851 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 01:13:10,876 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 01:13:10,912 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 01:13:10,912 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 01:13:10,912 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 01:13:10,912 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 01:13:10,913 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 01:13:10,913 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 01:13:10,913 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 01:13:10,913 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 01:13:10,960 INFO L276 IsEmpty]: Start isEmpty. Operand 912 states. [2020-09-25 01:13:11,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 461 [2020-09-25 01:13:11,016 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:13:11,018 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:13:11,018 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:13:11,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:13:11,027 INFO L82 PathProgramCache]: Analyzing trace with hash 752602954, now seen corresponding path program 1 times [2020-09-25 01:13:11,038 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:13:11,038 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [526010375] [2020-09-25 01:13:11,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:13:11,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:13:11,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:13:12,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:13:12,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:13:12,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:13:12,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:13:13,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:13:13,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:13:13,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:13:16,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:13:16,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 467 [2020-09-25 01:13:16,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 01:13:16,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5072 [2020-09-25 01:13:16,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:13:16,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:13:16,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 205 [2020-09-25 01:13:16,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 213 [2020-09-25 01:13:16,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 01:13:17,533 WARN L193 SmtUtils]: Spent 397.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-09-25 01:13:17,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:13:17,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:13:17,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:13:17,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:13:17,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-25 01:13:17,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:13:17,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-09-25 01:13:17,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:13:17,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:13:17,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:13:17,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:13:17,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:13:18,010 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 01:13:18,011 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [526010375] [2020-09-25 01:13:18,014 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:13:18,015 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 01:13:18,016 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439023538] [2020-09-25 01:13:18,028 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 01:13:18,028 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:13:18,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 01:13:18,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 01:13:18,059 INFO L87 Difference]: Start difference. First operand 912 states. Second operand 4 states. [2020-09-25 01:13:21,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:13:21,807 INFO L93 Difference]: Finished difference Result 1664 states and 2163 transitions. [2020-09-25 01:13:21,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 01:13:21,810 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 460 [2020-09-25 01:13:21,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:13:21,842 INFO L225 Difference]: With dead ends: 1664 [2020-09-25 01:13:21,842 INFO L226 Difference]: Without dead ends: 1251 [2020-09-25 01:13:21,850 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 01:13:21,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1251 states. [2020-09-25 01:13:21,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1251 to 1244. [2020-09-25 01:13:21,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1244 states. [2020-09-25 01:13:21,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1244 states to 1244 states and 1517 transitions. [2020-09-25 01:13:21,990 INFO L78 Accepts]: Start accepts. Automaton has 1244 states and 1517 transitions. Word has length 460 [2020-09-25 01:13:21,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:13:21,999 INFO L479 AbstractCegarLoop]: Abstraction has 1244 states and 1517 transitions. [2020-09-25 01:13:22,000 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 01:13:22,003 INFO L276 IsEmpty]: Start isEmpty. Operand 1244 states and 1517 transitions. [2020-09-25 01:13:22,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 461 [2020-09-25 01:13:22,018 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:13:22,018 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:13:22,019 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 01:13:22,019 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:13:22,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:13:22,021 INFO L82 PathProgramCache]: Analyzing trace with hash 1495383786, now seen corresponding path program 1 times [2020-09-25 01:13:22,021 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:13:22,021 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [630173488] [2020-09-25 01:13:22,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:13:22,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:13:22,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:13:22,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:13:22,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:13:22,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:13:22,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:13:23,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:13:23,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:13:23,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:13:27,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:13:27,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 467 [2020-09-25 01:13:27,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 01:13:27,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-09-25 01:13:27,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:13:27,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:13:27,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 206 [2020-09-25 01:13:27,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 223 [2020-09-25 01:13:27,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:13:27,574 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-09-25 01:13:27,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:13:27,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:13:27,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:13:27,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:13:27,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-25 01:13:27,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:13:27,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-09-25 01:13:27,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:13:27,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:13:27,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:13:27,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:13:27,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:13:28,128 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 01:13:28,130 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [630173488] [2020-09-25 01:13:28,130 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:13:28,130 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 01:13:28,131 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126893699] [2020-09-25 01:13:28,136 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 01:13:28,137 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:13:28,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 01:13:28,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 01:13:28,138 INFO L87 Difference]: Start difference. First operand 1244 states and 1517 transitions. Second operand 4 states. [2020-09-25 01:13:31,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:13:31,234 INFO L93 Difference]: Finished difference Result 2510 states and 3146 transitions. [2020-09-25 01:13:31,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 01:13:31,238 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 460 [2020-09-25 01:13:31,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:13:31,257 INFO L225 Difference]: With dead ends: 2510 [2020-09-25 01:13:31,257 INFO L226 Difference]: Without dead ends: 2066 [2020-09-25 01:13:31,269 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 01:13:31,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2066 states. [2020-09-25 01:13:31,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2066 to 2054. [2020-09-25 01:13:31,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2054 states. [2020-09-25 01:13:31,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2054 states to 2054 states and 2545 transitions. [2020-09-25 01:13:31,359 INFO L78 Accepts]: Start accepts. Automaton has 2054 states and 2545 transitions. Word has length 460 [2020-09-25 01:13:31,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:13:31,362 INFO L479 AbstractCegarLoop]: Abstraction has 2054 states and 2545 transitions. [2020-09-25 01:13:31,362 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 01:13:31,362 INFO L276 IsEmpty]: Start isEmpty. Operand 2054 states and 2545 transitions. [2020-09-25 01:13:31,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 461 [2020-09-25 01:13:31,370 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:13:31,370 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:13:31,371 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 01:13:31,371 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:13:31,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:13:31,372 INFO L82 PathProgramCache]: Analyzing trace with hash -863833942, now seen corresponding path program 1 times [2020-09-25 01:13:31,372 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:13:31,372 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1062483882] [2020-09-25 01:13:31,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:13:31,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:13:31,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:13:31,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:13:31,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:13:32,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:13:32,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:13:32,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:13:32,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:13:32,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:13:36,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:13:36,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 467 [2020-09-25 01:13:36,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 01:13:36,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-09-25 01:13:36,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:13:36,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:13:36,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 207 [2020-09-25 01:13:36,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 233 [2020-09-25 01:13:36,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:13:36,881 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-09-25 01:13:36,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:13:36,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:13:36,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:13:36,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:13:36,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-25 01:13:36,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:13:36,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-09-25 01:13:36,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:13:36,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:13:36,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:13:36,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:13:36,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:13:37,162 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 01:13:37,162 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1062483882] [2020-09-25 01:13:37,163 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:13:37,163 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 01:13:37,163 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971793081] [2020-09-25 01:13:37,164 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 01:13:37,164 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:13:37,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 01:13:37,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 01:13:37,165 INFO L87 Difference]: Start difference. First operand 2054 states and 2545 transitions. Second operand 4 states. [2020-09-25 01:13:39,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:13:39,886 INFO L93 Difference]: Finished difference Result 4382 states and 5559 transitions. [2020-09-25 01:13:39,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 01:13:39,887 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 460 [2020-09-25 01:13:39,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:13:39,905 INFO L225 Difference]: With dead ends: 4382 [2020-09-25 01:13:39,906 INFO L226 Difference]: Without dead ends: 3596 [2020-09-25 01:13:39,909 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 01:13:39,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3596 states. [2020-09-25 01:13:39,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3596 to 3574. [2020-09-25 01:13:39,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3574 states. [2020-09-25 01:13:40,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3574 states to 3574 states and 4481 transitions. [2020-09-25 01:13:40,003 INFO L78 Accepts]: Start accepts. Automaton has 3574 states and 4481 transitions. Word has length 460 [2020-09-25 01:13:40,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:13:40,004 INFO L479 AbstractCegarLoop]: Abstraction has 3574 states and 4481 transitions. [2020-09-25 01:13:40,004 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 01:13:40,004 INFO L276 IsEmpty]: Start isEmpty. Operand 3574 states and 4481 transitions. [2020-09-25 01:13:40,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 461 [2020-09-25 01:13:40,013 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:13:40,013 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:13:40,013 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 01:13:40,014 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:13:40,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:13:40,014 INFO L82 PathProgramCache]: Analyzing trace with hash 1795052938, now seen corresponding path program 1 times [2020-09-25 01:13:40,015 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:13:40,015 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2020123215] [2020-09-25 01:13:40,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:13:40,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:13:40,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:13:40,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:13:40,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:13:40,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:13:40,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:13:41,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:13:41,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:13:43,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:13:43,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:13:43,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:13:45,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:13:45,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 467 [2020-09-25 01:13:45,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 01:13:45,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-09-25 01:13:45,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:13:45,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 01:13:45,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 177 [2020-09-25 01:13:45,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-09-25 01:13:45,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:13:45,628 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-09-25 01:13:45,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:13:45,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:13:45,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:13:45,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:13:45,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-25 01:13:45,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:13:45,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-09-25 01:13:45,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:13:45,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:13:45,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:13:45,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:13:45,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:13:45,985 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 01:13:45,986 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2020123215] [2020-09-25 01:13:45,986 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:13:45,986 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 01:13:45,987 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124814334] [2020-09-25 01:13:45,988 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 01:13:45,988 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:13:45,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 01:13:45,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 01:13:45,989 INFO L87 Difference]: Start difference. First operand 3574 states and 4481 transitions. Second operand 5 states. [2020-09-25 01:13:51,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:13:51,155 INFO L93 Difference]: Finished difference Result 10018 states and 12622 transitions. [2020-09-25 01:13:51,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 01:13:51,156 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 460 [2020-09-25 01:13:51,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:13:51,183 INFO L225 Difference]: With dead ends: 10018 [2020-09-25 01:13:51,184 INFO L226 Difference]: Without dead ends: 6767 [2020-09-25 01:13:51,192 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 01:13:51,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6767 states. [2020-09-25 01:13:51,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6767 to 6765. [2020-09-25 01:13:51,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6765 states. [2020-09-25 01:13:51,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6765 states to 6765 states and 8468 transitions. [2020-09-25 01:13:51,443 INFO L78 Accepts]: Start accepts. Automaton has 6765 states and 8468 transitions. Word has length 460 [2020-09-25 01:13:51,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:13:51,444 INFO L479 AbstractCegarLoop]: Abstraction has 6765 states and 8468 transitions. [2020-09-25 01:13:51,444 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 01:13:51,444 INFO L276 IsEmpty]: Start isEmpty. Operand 6765 states and 8468 transitions. [2020-09-25 01:13:51,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 462 [2020-09-25 01:13:51,455 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:13:51,456 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:13:51,456 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 01:13:51,457 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:13:51,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:13:51,457 INFO L82 PathProgramCache]: Analyzing trace with hash -1015881836, now seen corresponding path program 1 times [2020-09-25 01:13:51,458 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:13:51,458 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1742430918] [2020-09-25 01:13:51,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:13:51,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:13:51,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:13:51,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:13:51,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:13:52,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:13:52,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:13:52,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking...