/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=HIGHLEXORDER --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.BOUNDED-6.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 22:58:05,946 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 22:58:05,949 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 22:58:05,977 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 22:58:05,977 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 22:58:05,978 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 22:58:05,980 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 22:58:05,982 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 22:58:05,984 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 22:58:05,985 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 22:58:05,986 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 22:58:05,987 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 22:58:05,987 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 22:58:05,989 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 22:58:05,990 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 22:58:05,991 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 22:58:05,992 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 22:58:05,993 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 22:58:05,995 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 22:58:05,997 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 22:58:05,999 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 22:58:06,000 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 22:58:06,001 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 22:58:06,002 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 22:58:06,005 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 22:58:06,006 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 22:58:06,006 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 22:58:06,007 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 22:58:06,007 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 22:58:06,008 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 22:58:06,009 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 22:58:06,010 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 22:58:06,011 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 22:58:06,012 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 22:58:06,013 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 22:58:06,013 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 22:58:06,014 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 22:58:06,014 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 22:58:06,014 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 22:58:06,015 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 22:58:06,016 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 22:58:06,017 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 [2020-09-24 22:58:06,045 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 22:58:06,045 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 22:58:06,046 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 22:58:06,047 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 22:58:06,047 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 22:58:06,047 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 22:58:06,047 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 22:58:06,048 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 22:58:06,048 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 22:58:06,048 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 22:58:06,048 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 22:58:06,049 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 22:58:06,049 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 22:58:06,049 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 22:58:06,049 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 22:58:06,049 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 22:58:06,050 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 22:58:06,050 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 22:58:06,050 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 22:58:06,050 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 22:58:06,050 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 22:58:06,051 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 22:58:06,051 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 22:58:06,051 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 22:58:06,051 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 22:58:06,052 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 22:58:06,052 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 22:58:06,052 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 22:58:06,052 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 22:58:06,052 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=HIGHLEXORDER;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=HIGHLEXORDER;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=HIGHLEXORDER;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=HIGHLEXORDER;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=HIGHLEXORDER;log-additional-information=true; [2020-09-24 22:58:06,525 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 22:58:06,550 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 22:58:06,554 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 22:58:06,556 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 22:58:06,558 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 22:58:06,559 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-09-24 22:58:06,651 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a435e6ac8/ada9b846ddb4423d9e031cf3d4901880/FLAG85b616916 [2020-09-24 22:58:07,331 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 22:58:07,332 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-09-24 22:58:07,347 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a435e6ac8/ada9b846ddb4423d9e031cf3d4901880/FLAG85b616916 [2020-09-24 22:58:07,528 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a435e6ac8/ada9b846ddb4423d9e031cf3d4901880 [2020-09-24 22:58:07,542 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 22:58:07,548 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 22:58:07,549 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 22:58:07,550 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 22:58:07,555 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 22:58:07,557 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 10:58:07" (1/1) ... [2020-09-24 22:58:07,561 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20a9c366 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:58:07, skipping insertion in model container [2020-09-24 22:58:07,562 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 10:58:07" (1/1) ... [2020-09-24 22:58:07,571 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 22:58:07,664 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 22:58:08,354 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 22:58:08,380 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 22:58:08,848 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 22:58:08,871 INFO L208 MainTranslator]: Completed translation [2020-09-24 22:58:08,872 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:58:08 WrapperNode [2020-09-24 22:58:08,872 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 22:58:08,873 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 22:58:08,873 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 22:58:08,873 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 22:58:08,891 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:58:08" (1/1) ... [2020-09-24 22:58:08,892 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:58:08" (1/1) ... [2020-09-24 22:58:08,921 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:58:08" (1/1) ... [2020-09-24 22:58:08,921 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:58:08" (1/1) ... [2020-09-24 22:58:08,966 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:58:08" (1/1) ... [2020-09-24 22:58:08,983 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:58:08" (1/1) ... [2020-09-24 22:58:08,988 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:58:08" (1/1) ... [2020-09-24 22:58:08,997 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 22:58:08,997 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 22:58:08,997 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 22:58:08,998 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 22:58:08,999 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:58:08" (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 [2020-09-24 22:58:09,110 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 22:58:09,110 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 22:58:09,111 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-24 22:58:09,111 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 22:58:09,111 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 22:58:09,111 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-24 22:58:09,112 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-09-24 22:58:09,112 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-09-24 22:58:09,112 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-24 22:58:09,112 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-24 22:58:09,112 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-09-24 22:58:09,113 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-09-24 22:58:09,113 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-09-24 22:58:09,113 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-09-24 22:58:09,113 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-09-24 22:58:09,114 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-09-24 22:58:09,114 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-09-24 22:58:09,114 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 22:58:09,114 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 22:58:09,115 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 22:58:11,089 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 22:58:11,089 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 22:58:11,102 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 10:58:11 BoogieIcfgContainer [2020-09-24 22:58:11,103 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 22:58:11,104 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 22:58:11,104 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 22:58:11,108 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 22:58:11,108 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 10:58:07" (1/3) ... [2020-09-24 22:58:11,109 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@428969c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 10:58:11, skipping insertion in model container [2020-09-24 22:58:11,109 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:58:08" (2/3) ... [2020-09-24 22:58:11,109 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@428969c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 10:58:11, skipping insertion in model container [2020-09-24 22:58:11,110 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 10:58:11" (3/3) ... [2020-09-24 22:58:11,112 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-09-24 22:58:11,123 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 22:58:11,134 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-09-24 22:58:11,156 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-09-24 22:58:11,191 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 22:58:11,191 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 22:58:11,191 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 22:58:11,191 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 22:58:11,191 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 22:58:11,191 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 22:58:11,191 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 22:58:11,191 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 22:58:11,232 INFO L276 IsEmpty]: Start isEmpty. Operand 1127 states. [2020-09-24 22:58:11,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 424 [2020-09-24 22:58:11,275 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:58:11,277 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] [2020-09-24 22:58:11,278 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:58:11,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:58:11,287 INFO L82 PathProgramCache]: Analyzing trace with hash -219806221, now seen corresponding path program 1 times [2020-09-24 22:58:11,298 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:58:11,299 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1684151459] [2020-09-24 22:58:11,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:58:11,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:58:12,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:58:12,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:58:12,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:58:12,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:58:13,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:58:13,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:58:13,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:58:16,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:58:16,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 430 [2020-09-24 22:58:16,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 22:58:16,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5073 [2020-09-24 22:58:16,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:58:16,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:58:16,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 203 [2020-09-24 22:58:16,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 186 [2020-09-24 22:58:16,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 22:58:17,745 WARN L193 SmtUtils]: Spent 468.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-24 22:58:17,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:58:17,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:58:17,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:58:17,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:58:17,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-09-24 22:58:17,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:58:17,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-09-24 22:58:17,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:58:17,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:58:17,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:58:17,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:58:17,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:58:18,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 22:58:18,121 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1684151459] [2020-09-24 22:58:18,123 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:58:18,123 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 22:58:18,124 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518049469] [2020-09-24 22:58:18,134 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 22:58:18,134 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:58:18,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 22:58:18,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 22:58:18,155 INFO L87 Difference]: Start difference. First operand 1127 states. Second operand 4 states. [2020-09-24 22:58:22,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:58:22,388 INFO L93 Difference]: Finished difference Result 1833 states and 2360 transitions. [2020-09-24 22:58:22,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 22:58:22,391 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 423 [2020-09-24 22:58:22,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:58:22,421 INFO L225 Difference]: With dead ends: 1833 [2020-09-24 22:58:22,422 INFO L226 Difference]: Without dead ends: 1303 [2020-09-24 22:58:22,430 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 22:58:22,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1303 states. [2020-09-24 22:58:22,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1303 to 1296. [2020-09-24 22:58:22,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1296 states. [2020-09-24 22:58:22,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1296 states to 1296 states and 1545 transitions. [2020-09-24 22:58:22,566 INFO L78 Accepts]: Start accepts. Automaton has 1296 states and 1545 transitions. Word has length 423 [2020-09-24 22:58:22,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:58:22,570 INFO L479 AbstractCegarLoop]: Abstraction has 1296 states and 1545 transitions. [2020-09-24 22:58:22,570 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 22:58:22,576 INFO L276 IsEmpty]: Start isEmpty. Operand 1296 states and 1545 transitions. [2020-09-24 22:58:22,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 424 [2020-09-24 22:58:22,588 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:58:22,588 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] [2020-09-24 22:58:22,589 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 22:58:22,589 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:58:22,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:58:22,590 INFO L82 PathProgramCache]: Analyzing trace with hash -74379501, now seen corresponding path program 1 times [2020-09-24 22:58:22,591 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:58:22,591 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1577205103] [2020-09-24 22:58:22,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:58:22,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:58:22,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:58:23,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:58:23,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:58:23,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:58:23,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:58:23,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:58:26,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:58:26,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:58:27,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:58:27,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:58:27,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 430 [2020-09-24 22:58:27,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-24 22:58:27,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5039 [2020-09-24 22:58:27,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:58:27,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 22:58:27,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 175 [2020-09-24 22:58:27,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-09-24 22:58:27,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:58:28,322 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-24 22:58:28,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:58:28,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:58:28,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:58:28,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:58:28,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-09-24 22:58:28,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:58:28,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-09-24 22:58:28,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:58:28,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:58:28,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:58:28,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:58:28,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:58:28,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 22:58:28,905 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1577205103] [2020-09-24 22:58:28,906 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:58:28,906 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 22:58:28,907 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73610048] [2020-09-24 22:58:28,910 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 22:58:28,910 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:58:28,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 22:58:28,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 22:58:28,911 INFO L87 Difference]: Start difference. First operand 1296 states and 1545 transitions. Second operand 5 states. [2020-09-24 22:58:35,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:58:35,242 INFO L93 Difference]: Finished difference Result 3348 states and 4039 transitions. [2020-09-24 22:58:35,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 22:58:35,243 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 423 [2020-09-24 22:58:35,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:58:35,255 INFO L225 Difference]: With dead ends: 3348 [2020-09-24 22:58:35,255 INFO L226 Difference]: Without dead ends: 2358 [2020-09-24 22:58:35,259 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 [2020-09-24 22:58:35,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2358 states. [2020-09-24 22:58:35,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2358 to 2236. [2020-09-24 22:58:35,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2236 states. [2020-09-24 22:58:35,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2236 states to 2236 states and 2703 transitions. [2020-09-24 22:58:35,340 INFO L78 Accepts]: Start accepts. Automaton has 2236 states and 2703 transitions. Word has length 423 [2020-09-24 22:58:35,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:58:35,341 INFO L479 AbstractCegarLoop]: Abstraction has 2236 states and 2703 transitions. [2020-09-24 22:58:35,342 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 22:58:35,342 INFO L276 IsEmpty]: Start isEmpty. Operand 2236 states and 2703 transitions. [2020-09-24 22:58:35,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2020-09-24 22:58:35,347 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:58:35,348 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] [2020-09-24 22:58:35,348 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 22:58:35,349 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:58:35,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:58:35,349 INFO L82 PathProgramCache]: Analyzing trace with hash 1675164715, now seen corresponding path program 1 times [2020-09-24 22:58:35,349 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:58:35,350 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1041839755] [2020-09-24 22:58:35,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:58:35,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:58:35,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:58:35,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:58:35,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:58:36,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:58:36,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:58:36,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:58:39,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:58:39,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:58:40,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:58:40,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 431 [2020-09-24 22:58:40,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 22:58:40,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-09-24 22:58:40,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:58:40,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:58:40,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 188 [2020-09-24 22:58:40,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 22:58:40,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 22:58:40,881 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-24 22:58:40,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:58:40,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:58:40,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:58:40,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:58:40,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-09-24 22:58:40,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:58:40,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-09-24 22:58:40,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:58:40,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:58:40,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:58:40,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:58:40,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:58:41,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 22:58:41,156 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1041839755] [2020-09-24 22:58:41,157 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:58:41,158 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 22:58:41,158 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572273823] [2020-09-24 22:58:41,159 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 22:58:41,159 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:58:41,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 22:58:41,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 22:58:41,162 INFO L87 Difference]: Start difference. First operand 2236 states and 2703 transitions. Second operand 4 states. [2020-09-24 22:58:46,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:58:46,726 INFO L93 Difference]: Finished difference Result 6213 states and 7554 transitions. [2020-09-24 22:58:46,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 22:58:46,727 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 424 [2020-09-24 22:58:46,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:58:46,746 INFO L225 Difference]: With dead ends: 6213 [2020-09-24 22:58:46,746 INFO L226 Difference]: Without dead ends: 4227 [2020-09-24 22:58:46,750 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 22:58:46,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4227 states. [2020-09-24 22:58:46,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4227 to 2242. [2020-09-24 22:58:46,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2242 states. [2020-09-24 22:58:46,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2242 states to 2242 states and 2711 transitions. [2020-09-24 22:58:46,838 INFO L78 Accepts]: Start accepts. Automaton has 2242 states and 2711 transitions. Word has length 424 [2020-09-24 22:58:46,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:58:46,839 INFO L479 AbstractCegarLoop]: Abstraction has 2242 states and 2711 transitions. [2020-09-24 22:58:46,839 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 22:58:46,839 INFO L276 IsEmpty]: Start isEmpty. Operand 2242 states and 2711 transitions. [2020-09-24 22:58:46,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 426 [2020-09-24 22:58:46,845 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:58:46,845 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] [2020-09-24 22:58:46,846 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 22:58:46,846 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:58:46,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:58:46,846 INFO L82 PathProgramCache]: Analyzing trace with hash 152897813, now seen corresponding path program 1 times [2020-09-24 22:58:46,847 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:58:46,847 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [351460934] [2020-09-24 22:58:46,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:58:46,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:58:47,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:58:47,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:58:47,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:58:47,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:58:47,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:58:48,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:58:49,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:58:51,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:58:51,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:58:51,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:58:51,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 432 [2020-09-24 22:58:51,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-24 22:58:51,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-09-24 22:58:51,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:58:51,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 22:58:51,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 173 [2020-09-24 22:58:51,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 172 [2020-09-24 22:58:51,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:58:52,654 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-24 22:58:52,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:58:52,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:58:52,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:58:52,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:58:52,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-09-24 22:58:52,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:58:52,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-09-24 22:58:52,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:58:52,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:58:52,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:58:52,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:58:52,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:58:53,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 22:58:53,032 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [351460934] [2020-09-24 22:58:53,033 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:58:53,033 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 22:58:53,034 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156562495] [2020-09-24 22:58:53,035 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 22:58:53,036 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:58:53,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 22:58:53,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 22:58:53,037 INFO L87 Difference]: Start difference. First operand 2242 states and 2711 transitions. Second operand 5 states.