/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.8 --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 [2020-09-25 08:04:07,269 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 08:04:07,272 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 08:04:07,298 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 08:04:07,298 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 08:04:07,299 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 08:04:07,301 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 08:04:07,303 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 08:04:07,305 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 08:04:07,306 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 08:04:07,307 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 08:04:07,308 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 08:04:07,308 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 08:04:07,310 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 08:04:07,311 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 08:04:07,312 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 08:04:07,313 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 08:04:07,314 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 08:04:07,316 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 08:04:07,318 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 08:04:07,320 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 08:04:07,321 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 08:04:07,323 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 08:04:07,324 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 08:04:07,329 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 08:04:07,330 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 08:04:07,330 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 08:04:07,333 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 08:04:07,333 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 08:04:07,337 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 08:04:07,337 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 08:04:07,338 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 08:04:07,339 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 08:04:07,340 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 08:04:07,341 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 08:04:07,341 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 08:04:07,342 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 08:04:07,342 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 08:04:07,343 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 08:04:07,344 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 08:04:07,353 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 08:04:07,354 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 08:04:07,395 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 08:04:07,395 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 08:04:07,398 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 08:04:07,398 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 08:04:07,399 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 08:04:07,399 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 08:04:07,399 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 08:04:07,400 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 08:04:07,400 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 08:04:07,400 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 08:04:07,401 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 08:04:07,401 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 08:04:07,401 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 08:04:07,402 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 08:04:07,402 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 08:04:07,402 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 08:04:07,402 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 08:04:07,402 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 08:04:07,403 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 08:04:07,403 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 08:04:07,403 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 08:04:07,404 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 08:04:07,404 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 08:04:07,404 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 08:04:07,404 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 08:04:07,405 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 08:04:07,405 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 08:04:07,405 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 08:04:07,405 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 08:04:07,405 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=WIDESTAMONGSMALL;tolerance=0.8;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=WIDESTAMONGSMALL;tolerance=0.8;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=WIDESTAMONGSMALL;tolerance=0.8;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=WIDESTAMONGSMALL;tolerance=0.8;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=WIDESTAMONGSMALL;tolerance=0.8;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=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; [2020-09-25 08:04:07,873 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 08:04:07,896 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 08:04:07,901 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 08:04:07,903 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 08:04:07,904 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 08:04:07,905 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-09-25 08:04:07,997 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/159f416a1/9e613ad33f04466298714f6c2cec3969/FLAG3dd5b4a38 [2020-09-25 08:04:08,708 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 08:04:08,710 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-09-25 08:04:08,732 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/159f416a1/9e613ad33f04466298714f6c2cec3969/FLAG3dd5b4a38 [2020-09-25 08:04:08,902 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/159f416a1/9e613ad33f04466298714f6c2cec3969 [2020-09-25 08:04:08,921 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 08:04:08,927 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 08:04:08,930 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 08:04:08,930 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 08:04:08,935 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 08:04:08,937 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 08:04:08" (1/1) ... [2020-09-25 08:04:08,942 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@658c4011 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:04:08, skipping insertion in model container [2020-09-25 08:04:08,943 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 08:04:08" (1/1) ... [2020-09-25 08:04:08,954 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 08:04:09,042 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 08:04:09,708 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 08:04:09,723 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 08:04:10,265 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 08:04:10,289 INFO L208 MainTranslator]: Completed translation [2020-09-25 08:04:10,289 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:04:10 WrapperNode [2020-09-25 08:04:10,290 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 08:04:10,291 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 08:04:10,291 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 08:04:10,291 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 08:04:10,310 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:04:10" (1/1) ... [2020-09-25 08:04:10,310 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:04:10" (1/1) ... [2020-09-25 08:04:10,332 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:04:10" (1/1) ... [2020-09-25 08:04:10,333 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:04:10" (1/1) ... [2020-09-25 08:04:10,367 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:04:10" (1/1) ... [2020-09-25 08:04:10,395 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:04:10" (1/1) ... [2020-09-25 08:04:10,401 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:04:10" (1/1) ... [2020-09-25 08:04:10,411 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 08:04:10,412 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 08:04:10,412 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 08:04:10,412 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 08:04:10,414 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:04:10" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 08:04:10,532 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 08:04:10,532 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 08:04:10,532 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-25 08:04:10,533 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 08:04:10,533 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 08:04:10,533 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-25 08:04:10,533 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-09-25 08:04:10,534 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-09-25 08:04:10,534 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 08:04:10,535 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-25 08:04:10,535 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-09-25 08:04:10,535 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-09-25 08:04:10,535 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-09-25 08:04:10,536 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-09-25 08:04:10,536 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-09-25 08:04:10,537 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-09-25 08:04:10,537 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-09-25 08:04:10,538 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 08:04:10,538 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 08:04:10,538 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 08:04:12,806 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 08:04:12,807 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 08:04:12,822 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 08:04:12 BoogieIcfgContainer [2020-09-25 08:04:12,822 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 08:04:12,823 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 08:04:12,824 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 08:04:12,828 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 08:04:12,828 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 08:04:08" (1/3) ... [2020-09-25 08:04:12,829 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3262d87b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 08:04:12, skipping insertion in model container [2020-09-25 08:04:12,829 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:04:10" (2/3) ... [2020-09-25 08:04:12,830 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3262d87b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 08:04:12, skipping insertion in model container [2020-09-25 08:04:12,830 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 08:04:12" (3/3) ... [2020-09-25 08:04:12,832 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-09-25 08:04:12,844 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 08:04:12,856 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-09-25 08:04:12,879 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-09-25 08:04:12,917 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 08:04:12,917 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 08:04:12,917 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 08:04:12,917 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 08:04:12,917 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 08:04:12,917 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 08:04:12,917 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 08:04:12,917 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 08:04:12,961 INFO L276 IsEmpty]: Start isEmpty. Operand 1127 states. [2020-09-25 08:04:12,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 424 [2020-09-25 08:04:13,000 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:04:13,001 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] [2020-09-25 08:04:13,002 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:04:13,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:04:13,011 INFO L82 PathProgramCache]: Analyzing trace with hash -219806221, now seen corresponding path program 1 times [2020-09-25 08:04:13,022 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:04:13,023 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1577834407] [2020-09-25 08:04:13,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:04:13,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:04:13,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:04:14,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:04:14,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:04:14,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:04:14,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:04:14,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:04:15,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:04:18,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:04:18,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 430 [2020-09-25 08:04:18,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 08:04:18,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5052 [2020-09-25 08:04:18,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:04:18,603 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:04:18,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:04:18,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 203 [2020-09-25 08:04:18,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 186 [2020-09-25 08:04:18,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 08:04:19,498 WARN L193 SmtUtils]: Spent 417.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-25 08:04:19,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:04:19,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:04:19,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:04:19,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:04:19,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-09-25 08:04:19,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:04:19,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-09-25 08:04:19,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:04:19,583 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:04:19,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:04:19,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:04:19,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:04:19,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:04:20,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 08:04:20,049 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1577834407] [2020-09-25 08:04:20,052 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:04:20,053 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 08:04:20,054 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055954042] [2020-09-25 08:04:20,063 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 08:04:20,064 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:04:20,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 08:04:20,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 08:04:20,094 INFO L87 Difference]: Start difference. First operand 1127 states. Second operand 4 states. [2020-09-25 08:04:24,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:04:24,638 INFO L93 Difference]: Finished difference Result 1833 states and 2360 transitions. [2020-09-25 08:04:24,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 08:04:24,640 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 423 [2020-09-25 08:04:24,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:04:24,673 INFO L225 Difference]: With dead ends: 1833 [2020-09-25 08:04:24,674 INFO L226 Difference]: Without dead ends: 1303 [2020-09-25 08:04:24,683 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 08:04:24,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1303 states. [2020-09-25 08:04:24,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1303 to 1296. [2020-09-25 08:04:24,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1296 states. [2020-09-25 08:04:24,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1296 states to 1296 states and 1545 transitions. [2020-09-25 08:04:24,823 INFO L78 Accepts]: Start accepts. Automaton has 1296 states and 1545 transitions. Word has length 423 [2020-09-25 08:04:24,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:04:24,826 INFO L479 AbstractCegarLoop]: Abstraction has 1296 states and 1545 transitions. [2020-09-25 08:04:24,826 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 08:04:24,826 INFO L276 IsEmpty]: Start isEmpty. Operand 1296 states and 1545 transitions. [2020-09-25 08:04:24,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 424 [2020-09-25 08:04:24,837 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:04:24,837 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] [2020-09-25 08:04:24,838 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 08:04:24,838 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:04:24,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:04:24,839 INFO L82 PathProgramCache]: Analyzing trace with hash -74379501, now seen corresponding path program 1 times [2020-09-25 08:04:24,839 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:04:24,839 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1447539439] [2020-09-25 08:04:24,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:04:25,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:04:25,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:04:25,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:04:25,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:04:25,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:04:25,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:04:25,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:04:28,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:04:29,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:04:29,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:04:30,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:04:30,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 430 [2020-09-25 08:04:30,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 08:04:30,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 08:04:30,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:04:30,018 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:04:30,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 08:04:30,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 175 [2020-09-25 08:04:30,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-09-25 08:04:30,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:04:30,936 WARN L193 SmtUtils]: Spent 479.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-25 08:04:30,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:04:30,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:04:30,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:04:30,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:04:31,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-09-25 08:04:31,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:04:31,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-09-25 08:04:31,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:04:31,001 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:04:31,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:04:31,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:04:31,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:04:31,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:04:31,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 08:04:31,291 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1447539439] [2020-09-25 08:04:31,291 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:04:31,291 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 08:04:31,292 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629764782] [2020-09-25 08:04:31,296 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 08:04:31,296 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:04:31,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 08:04:31,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 08:04:31,298 INFO L87 Difference]: Start difference. First operand 1296 states and 1545 transitions. Second operand 5 states. [2020-09-25 08:04:38,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:04:38,152 INFO L93 Difference]: Finished difference Result 3348 states and 4039 transitions. [2020-09-25 08:04:38,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 08:04:38,154 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 423 [2020-09-25 08:04:38,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:04:38,167 INFO L225 Difference]: With dead ends: 3348 [2020-09-25 08:04:38,167 INFO L226 Difference]: Without dead ends: 2358 [2020-09-25 08:04:38,173 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 08:04:38,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2358 states. [2020-09-25 08:04:38,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2358 to 2236. [2020-09-25 08:04:38,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2236 states. [2020-09-25 08:04:38,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2236 states to 2236 states and 2703 transitions. [2020-09-25 08:04:38,262 INFO L78 Accepts]: Start accepts. Automaton has 2236 states and 2703 transitions. Word has length 423 [2020-09-25 08:04:38,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:04:38,263 INFO L479 AbstractCegarLoop]: Abstraction has 2236 states and 2703 transitions. [2020-09-25 08:04:38,264 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 08:04:38,264 INFO L276 IsEmpty]: Start isEmpty. Operand 2236 states and 2703 transitions. [2020-09-25 08:04:38,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2020-09-25 08:04:38,273 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:04:38,274 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] [2020-09-25 08:04:38,274 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 08:04:38,274 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:04:38,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:04:38,275 INFO L82 PathProgramCache]: Analyzing trace with hash 1675164715, now seen corresponding path program 1 times [2020-09-25 08:04:38,275 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:04:38,276 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1979596335] [2020-09-25 08:04:38,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:04:38,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:04:38,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:04:38,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:04:38,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:04:38,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:04:39,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:04:39,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:04:42,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:04:42,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:04:43,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:04:43,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 431 [2020-09-25 08:04:43,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 08:04:43,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5049 [2020-09-25 08:04:43,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:04:43,396 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:04:43,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 08:04:43,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 171 [2020-09-25 08:04:43,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-09-25 08:04:43,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:04:43,918 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-25 08:04:43,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:04:43,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:04:43,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:04:43,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:04:43,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-09-25 08:04:43,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:04:43,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-09-25 08:04:43,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:04:43,986 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:04:43,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:04:43,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:04:43,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:04:43,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 08:04:44,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 08:04:44,496 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1979596335] [2020-09-25 08:04:44,496 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:04:44,497 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 08:04:44,497 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818927377] [2020-09-25 08:04:44,499 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 08:04:44,499 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:04:44,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 08:04:44,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 08:04:44,501 INFO L87 Difference]: Start difference. First operand 2236 states and 2703 transitions. Second operand 5 states. [2020-09-25 08:04:51,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:04:51,846 INFO L93 Difference]: Finished difference Result 6157 states and 7488 transitions. [2020-09-25 08:04:51,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 08:04:51,847 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 424 [2020-09-25 08:04:51,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:04:51,866 INFO L225 Difference]: With dead ends: 6157 [2020-09-25 08:04:51,867 INFO L226 Difference]: Without dead ends: 4143 [2020-09-25 08:04:51,871 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 08:04:51,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4143 states. [2020-09-25 08:04:52,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4143 to 4030. [2020-09-25 08:04:52,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4030 states. [2020-09-25 08:04:52,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4030 states to 4030 states and 4890 transitions. [2020-09-25 08:04:52,039 INFO L78 Accepts]: Start accepts. Automaton has 4030 states and 4890 transitions. Word has length 424 [2020-09-25 08:04:52,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:04:52,041 INFO L479 AbstractCegarLoop]: Abstraction has 4030 states and 4890 transitions. [2020-09-25 08:04:52,041 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 08:04:52,042 INFO L276 IsEmpty]: Start isEmpty. Operand 4030 states and 4890 transitions. [2020-09-25 08:04:52,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 426 [2020-09-25 08:04:52,056 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:04:52,056 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] [2020-09-25 08:04:52,057 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 08:04:52,057 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:04:52,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:04:52,057 INFO L82 PathProgramCache]: Analyzing trace with hash 1336613739, now seen corresponding path program 1 times [2020-09-25 08:04:52,059 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:04:52,059 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1224327173] [2020-09-25 08:04:52,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:04:52,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:04:52,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:04:52,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:04:52,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:04:52,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:04:52,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:04:53,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:04:55,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:04:55,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking...