/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=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 20:44:40,880 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 20:44:40,883 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 20:44:40,911 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 20:44:40,912 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 20:44:40,913 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 20:44:40,914 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 20:44:40,916 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 20:44:40,918 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 20:44:40,919 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 20:44:40,920 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 20:44:40,921 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 20:44:40,921 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 20:44:40,925 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 20:44:40,926 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 20:44:40,927 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 20:44:40,931 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 20:44:40,935 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 20:44:40,937 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 20:44:40,940 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 20:44:40,944 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 20:44:40,945 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 20:44:40,946 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 20:44:40,948 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 20:44:40,954 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 20:44:40,954 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 20:44:40,954 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 20:44:40,957 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 20:44:40,957 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 20:44:40,960 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 20:44:40,960 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 20:44:40,963 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 20:44:40,964 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 20:44:40,965 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 20:44:40,974 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 20:44:40,975 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 20:44:40,975 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 20:44:40,976 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 20:44:40,976 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 20:44:40,979 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 20:44:40,980 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 20:44:40,981 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 20:44:41,028 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 20:44:41,028 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 20:44:41,031 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 20:44:41,031 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 20:44:41,032 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 20:44:41,032 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 20:44:41,032 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 20:44:41,033 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 20:44:41,033 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 20:44:41,033 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 20:44:41,034 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 20:44:41,034 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 20:44:41,035 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 20:44:41,035 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 20:44:41,035 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 20:44:41,035 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 20:44:41,036 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 20:44:41,036 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 20:44:41,036 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 20:44:41,037 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 20:44:41,037 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 20:44:41,037 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 20:44:41,037 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 20:44:41,037 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 20:44:41,038 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 20:44:41,038 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 20:44:41,038 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 20:44:41,038 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 20:44:41,038 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 20:44:41,039 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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;log-additional-information=true; [2020-09-24 20:44:41,481 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 20:44:41,500 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 20:44:41,504 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 20:44:41,506 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 20:44:41,507 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 20:44:41,508 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-09-24 20:44:41,607 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ffa75b093/13e712c31e4e4d7daccab74f22524d6a/FLAGa3cc9b622 [2020-09-24 20:44:42,267 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 20:44:42,268 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-09-24 20:44:42,298 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ffa75b093/13e712c31e4e4d7daccab74f22524d6a/FLAGa3cc9b622 [2020-09-24 20:44:42,501 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ffa75b093/13e712c31e4e4d7daccab74f22524d6a [2020-09-24 20:44:42,515 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 20:44:42,520 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 20:44:42,521 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 20:44:42,521 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 20:44:42,526 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 20:44:42,527 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:44:42" (1/1) ... [2020-09-24 20:44:42,531 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17866592 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:44:42, skipping insertion in model container [2020-09-24 20:44:42,532 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:44:42" (1/1) ... [2020-09-24 20:44:42,539 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 20:44:42,619 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 20:44:43,296 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 20:44:43,316 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 20:44:43,882 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 20:44:43,906 INFO L208 MainTranslator]: Completed translation [2020-09-24 20:44:43,907 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:44:43 WrapperNode [2020-09-24 20:44:43,907 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 20:44:43,908 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 20:44:43,908 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 20:44:43,909 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 20:44:43,930 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:44:43" (1/1) ... [2020-09-24 20:44:43,930 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:44:43" (1/1) ... [2020-09-24 20:44:43,952 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:44:43" (1/1) ... [2020-09-24 20:44:43,953 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:44:43" (1/1) ... [2020-09-24 20:44:43,985 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:44:43" (1/1) ... [2020-09-24 20:44:44,026 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:44:43" (1/1) ... [2020-09-24 20:44:44,040 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:44:43" (1/1) ... [2020-09-24 20:44:44,057 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 20:44:44,057 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 20:44:44,058 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 20:44:44,058 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 20:44:44,062 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:44:43" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 20:44:44,187 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 20:44:44,188 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 20:44:44,188 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-24 20:44:44,188 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 20:44:44,188 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 20:44:44,189 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-24 20:44:44,189 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-09-24 20:44:44,189 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-09-24 20:44:44,190 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-09-24 20:44:44,191 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-24 20:44:44,191 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-24 20:44:44,191 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-09-24 20:44:44,191 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-09-24 20:44:44,191 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-09-24 20:44:44,192 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-09-24 20:44:44,193 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-09-24 20:44:44,193 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-09-24 20:44:44,194 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-09-24 20:44:44,194 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 20:44:44,194 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 20:44:44,194 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 20:44:46,272 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 20:44:46,273 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 20:44:46,287 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:44:46 BoogieIcfgContainer [2020-09-24 20:44:46,287 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 20:44:46,288 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 20:44:46,289 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 20:44:46,293 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 20:44:46,293 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 08:44:42" (1/3) ... [2020-09-24 20:44:46,294 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76a2be39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:44:46, skipping insertion in model container [2020-09-24 20:44:46,295 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:44:43" (2/3) ... [2020-09-24 20:44:46,295 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76a2be39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:44:46, skipping insertion in model container [2020-09-24 20:44:46,295 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:44:46" (3/3) ... [2020-09-24 20:44:46,298 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-09-24 20:44:46,310 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 20:44:46,321 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-09-24 20:44:46,344 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-09-24 20:44:46,383 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 20:44:46,384 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 20:44:46,384 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 20:44:46,384 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 20:44:46,384 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 20:44:46,384 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 20:44:46,385 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 20:44:46,385 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 20:44:46,430 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states. [2020-09-24 20:44:46,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2020-09-24 20:44:46,471 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:44:46,473 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:44:46,474 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:44:46,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:44:46,485 INFO L82 PathProgramCache]: Analyzing trace with hash -1272027086, now seen corresponding path program 1 times [2020-09-24 20:44:46,498 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:44:46,499 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1051692475] [2020-09-24 20:44:46,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:44:47,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:44:47,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:44:47,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:44:47,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:44:48,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:44:48,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:44:48,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:44:48,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:44:49,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:44:52,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:44:52,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 421 [2020-09-24 20:44:52,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 20:44:52,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-09-24 20:44:52,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:44:52,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 20:44:52,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 165 [2020-09-24 20:44:52,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-24 20:44:52,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 20:44:52,754 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 20:44:52,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:44:52,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:44:52,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:44:52,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:44:52,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-24 20:44:52,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:44:52,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-09-24 20:44:52,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:44:52,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:44:52,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:44:52,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:44:52,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:44:53,117 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 20:44:53,119 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1051692475] [2020-09-24 20:44:53,122 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:44:53,122 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 20:44:53,124 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035617539] [2020-09-24 20:44:53,133 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 20:44:53,133 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:44:53,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 20:44:53,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 20:44:53,166 INFO L87 Difference]: Start difference. First operand 1123 states. Second operand 5 states. [2020-09-24 20:45:02,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:45:02,266 INFO L93 Difference]: Finished difference Result 2939 states and 3816 transitions. [2020-09-24 20:45:02,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 20:45:02,268 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 414 [2020-09-24 20:45:02,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:45:02,308 INFO L225 Difference]: With dead ends: 2939 [2020-09-24 20:45:02,308 INFO L226 Difference]: Without dead ends: 1752 [2020-09-24 20:45:02,321 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 20:45:02,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1752 states. [2020-09-24 20:45:02,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1752 to 1629. [2020-09-24 20:45:02,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1629 states. [2020-09-24 20:45:02,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1629 states to 1629 states and 1939 transitions. [2020-09-24 20:45:02,496 INFO L78 Accepts]: Start accepts. Automaton has 1629 states and 1939 transitions. Word has length 414 [2020-09-24 20:45:02,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:45:02,498 INFO L479 AbstractCegarLoop]: Abstraction has 1629 states and 1939 transitions. [2020-09-24 20:45:02,498 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 20:45:02,498 INFO L276 IsEmpty]: Start isEmpty. Operand 1629 states and 1939 transitions. [2020-09-24 20:45:02,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 416 [2020-09-24 20:45:02,508 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:45:02,509 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:45:02,509 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 20:45:02,509 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:45:02,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:45:02,510 INFO L82 PathProgramCache]: Analyzing trace with hash -993206244, now seen corresponding path program 1 times [2020-09-24 20:45:02,510 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:45:02,511 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [682288612] [2020-09-24 20:45:02,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:45:02,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:45:02,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:45:02,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:45:02,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:45:03,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:45:03,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:45:03,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:45:04,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:45:06,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:45:07,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:45:07,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:45:07,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 422 [2020-09-24 20:45:07,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-24 20:45:07,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-24 20:45:07,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:45:07,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 20:45:07,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 170 [2020-09-24 20:45:07,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-24 20:45:07,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:45:08,069 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 20:45:08,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:45:08,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:45:08,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:45:08,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:45:08,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-24 20:45:08,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:45:08,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-09-24 20:45:08,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:45:08,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:45:08,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:45:08,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:45:08,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:45:08,393 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 20:45:08,393 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [682288612] [2020-09-24 20:45:08,394 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:45:08,394 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 20:45:08,394 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863086918] [2020-09-24 20:45:08,400 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 20:45:08,400 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:45:08,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 20:45:08,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 20:45:08,401 INFO L87 Difference]: Start difference. First operand 1629 states and 1939 transitions. Second operand 5 states. [2020-09-24 20:45:15,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:45:15,391 INFO L93 Difference]: Finished difference Result 4217 states and 5056 transitions. [2020-09-24 20:45:15,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 20:45:15,392 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 415 [2020-09-24 20:45:15,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:45:15,410 INFO L225 Difference]: With dead ends: 4217 [2020-09-24 20:45:15,410 INFO L226 Difference]: Without dead ends: 3006 [2020-09-24 20:45:15,414 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 20:45:15,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3006 states. [2020-09-24 20:45:15,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3006 to 2883. [2020-09-24 20:45:15,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2883 states. [2020-09-24 20:45:15,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2883 states to 2883 states and 3462 transitions. [2020-09-24 20:45:15,538 INFO L78 Accepts]: Start accepts. Automaton has 2883 states and 3462 transitions. Word has length 415 [2020-09-24 20:45:15,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:45:15,539 INFO L479 AbstractCegarLoop]: Abstraction has 2883 states and 3462 transitions. [2020-09-24 20:45:15,539 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 20:45:15,540 INFO L276 IsEmpty]: Start isEmpty. Operand 2883 states and 3462 transitions. [2020-09-24 20:45:15,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 417 [2020-09-24 20:45:15,551 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:45:15,552 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:45:15,552 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 20:45:15,553 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:45:15,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:45:15,553 INFO L82 PathProgramCache]: Analyzing trace with hash -1698938178, now seen corresponding path program 1 times [2020-09-24 20:45:15,554 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:45:15,554 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [523083710] [2020-09-24 20:45:15,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:45:15,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:45:15,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:45:15,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:45:15,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:45:16,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:45:16,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:45:17,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:45:17,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:45:17,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:45:20,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:45:20,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 423 [2020-09-24 20:45:20,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 20:45:20,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5042 [2020-09-24 20:45:20,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:45:20,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 20:45:20,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 169 [2020-09-24 20:45:20,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-09-24 20:45:20,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:45:21,093 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 20:45:21,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:45:21,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:45:21,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:45:21,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:45:21,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-24 20:45:21,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:45:21,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-09-24 20:45:21,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:45:21,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:45:21,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:45:21,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:45:21,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:45:21,321 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 20:45:21,322 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [523083710] [2020-09-24 20:45:21,322 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:45:21,322 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 20:45:21,323 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641534478] [2020-09-24 20:45:21,324 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 20:45:21,324 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:45:21,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 20:45:21,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 20:45:21,325 INFO L87 Difference]: Start difference. First operand 2883 states and 3462 transitions. Second operand 5 states. [2020-09-24 20:45:27,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:45:27,784 INFO L93 Difference]: Finished difference Result 8007 states and 9638 transitions. [2020-09-24 20:45:27,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 20:45:27,785 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 416 [2020-09-24 20:45:27,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:45:27,807 INFO L225 Difference]: With dead ends: 8007 [2020-09-24 20:45:27,807 INFO L226 Difference]: Without dead ends: 5392 [2020-09-24 20:45:27,813 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 20:45:27,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5392 states. [2020-09-24 20:45:27,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5392 to 5269. [2020-09-24 20:45:27,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5269 states. [2020-09-24 20:45:28,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5269 states to 5269 states and 6328 transitions. [2020-09-24 20:45:28,004 INFO L78 Accepts]: Start accepts. Automaton has 5269 states and 6328 transitions. Word has length 416 [2020-09-24 20:45:28,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:45:28,004 INFO L479 AbstractCegarLoop]: Abstraction has 5269 states and 6328 transitions. [2020-09-24 20:45:28,004 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 20:45:28,005 INFO L276 IsEmpty]: Start isEmpty. Operand 5269 states and 6328 transitions. [2020-09-24 20:45:28,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 418 [2020-09-24 20:45:28,022 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:45:28,022 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] [2020-09-24 20:45:28,022 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 20:45:28,024 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:45:28,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:45:28,028 INFO L82 PathProgramCache]: Analyzing trace with hash -1652108032, now seen corresponding path program 1 times [2020-09-24 20:45:28,029 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:45:28,029 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1479249649] [2020-09-24 20:45:28,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:45:28,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:45:28,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:45:28,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:45:28,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:45:28,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:45:28,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:45:29,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:45:30,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:45:30,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:45:30,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:45:31,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking...