/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=LOWLEXORDER --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 21:53:17,268 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 21:53:17,272 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 21:53:17,299 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 21:53:17,300 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 21:53:17,301 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 21:53:17,302 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 21:53:17,304 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 21:53:17,306 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 21:53:17,307 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 21:53:17,309 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 21:53:17,310 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 21:53:17,310 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 21:53:17,311 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 21:53:17,313 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 21:53:17,314 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 21:53:17,315 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 21:53:17,316 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 21:53:17,318 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 21:53:17,321 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 21:53:17,322 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 21:53:17,324 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 21:53:17,325 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 21:53:17,326 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 21:53:17,332 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 21:53:17,332 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 21:53:17,332 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 21:53:17,336 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 21:53:17,336 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 21:53:17,338 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 21:53:17,338 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 21:53:17,342 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 21:53:17,343 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 21:53:17,344 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 21:53:17,345 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 21:53:17,345 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 21:53:17,346 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 21:53:17,347 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 21:53:17,347 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 21:53:17,348 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 21:53:17,349 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 21:53:17,350 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 21:53:17,377 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 21:53:17,377 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 21:53:17,379 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 21:53:17,379 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 21:53:17,379 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 21:53:17,380 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 21:53:17,380 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 21:53:17,380 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 21:53:17,380 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 21:53:17,380 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 21:53:17,381 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 21:53:17,381 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 21:53:17,381 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 21:53:17,381 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 21:53:17,381 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 21:53:17,382 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 21:53:17,382 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 21:53:17,382 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 21:53:17,382 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 21:53:17,383 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 21:53:17,383 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 21:53:17,383 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 21:53:17,383 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 21:53:17,383 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 21:53:17,384 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 21:53:17,384 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 21:53:17,384 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 21:53:17,384 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 21:53:17,385 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 21:53:17,385 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=LOWLEXORDER;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=LOWLEXORDER;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=LOWLEXORDER;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=LOWLEXORDER;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=LOWLEXORDER;log-additional-information=true; [2020-09-24 21:53:17,867 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 21:53:17,895 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 21:53:17,900 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 21:53:17,903 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 21:53:17,904 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 21:53:17,906 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-09-24 21:53:17,998 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3ac24ef65/700871c7b1d641c8a8112064e1748a3e/FLAG1f06383f8 [2020-09-24 21:53:18,763 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 21:53:18,765 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-09-24 21:53:18,783 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3ac24ef65/700871c7b1d641c8a8112064e1748a3e/FLAG1f06383f8 [2020-09-24 21:53:18,905 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3ac24ef65/700871c7b1d641c8a8112064e1748a3e [2020-09-24 21:53:18,924 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 21:53:18,929 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 21:53:18,933 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 21:53:18,933 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 21:53:18,937 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 21:53:18,939 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:53:18" (1/1) ... [2020-09-24 21:53:18,944 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@fb81a5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:53:18, skipping insertion in model container [2020-09-24 21:53:18,944 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:53:18" (1/1) ... [2020-09-24 21:53:18,955 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 21:53:19,050 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 21:53:19,737 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:53:19,752 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 21:53:20,219 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:53:20,248 INFO L208 MainTranslator]: Completed translation [2020-09-24 21:53:20,249 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:53:20 WrapperNode [2020-09-24 21:53:20,249 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 21:53:20,250 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 21:53:20,251 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 21:53:20,251 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 21:53:20,268 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:53:20" (1/1) ... [2020-09-24 21:53:20,269 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:53:20" (1/1) ... [2020-09-24 21:53:20,290 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:53:20" (1/1) ... [2020-09-24 21:53:20,291 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:53:20" (1/1) ... [2020-09-24 21:53:20,324 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:53:20" (1/1) ... [2020-09-24 21:53:20,358 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:53:20" (1/1) ... [2020-09-24 21:53:20,371 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:53:20" (1/1) ... [2020-09-24 21:53:20,388 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 21:53:20,389 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 21:53:20,389 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 21:53:20,389 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 21:53:20,394 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:53:20" (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 21:53:20,497 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 21:53:20,498 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 21:53:20,498 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-24 21:53:20,498 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 21:53:20,499 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 21:53:20,500 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-24 21:53:20,500 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-09-24 21:53:20,500 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-09-24 21:53:20,501 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-24 21:53:20,501 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-24 21:53:20,501 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-09-24 21:53:20,502 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-09-24 21:53:20,502 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-09-24 21:53:20,502 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-09-24 21:53:20,502 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-09-24 21:53:20,503 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-09-24 21:53:20,504 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-09-24 21:53:20,504 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 21:53:20,504 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 21:53:20,505 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 21:53:22,656 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 21:53:22,657 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 21:53:22,678 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:53:22 BoogieIcfgContainer [2020-09-24 21:53:22,678 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 21:53:22,681 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 21:53:22,681 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 21:53:22,687 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 21:53:22,687 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 09:53:18" (1/3) ... [2020-09-24 21:53:22,688 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47926ff3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:53:22, skipping insertion in model container [2020-09-24 21:53:22,690 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:53:20" (2/3) ... [2020-09-24 21:53:22,691 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47926ff3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:53:22, skipping insertion in model container [2020-09-24 21:53:22,691 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:53:22" (3/3) ... [2020-09-24 21:53:22,695 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-09-24 21:53:22,707 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 21:53:22,725 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-09-24 21:53:22,747 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-09-24 21:53:22,783 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 21:53:22,783 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 21:53:22,783 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 21:53:22,783 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 21:53:22,784 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 21:53:22,784 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 21:53:22,784 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 21:53:22,784 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 21:53:22,831 INFO L276 IsEmpty]: Start isEmpty. Operand 1127 states. [2020-09-24 21:53:22,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 424 [2020-09-24 21:53:22,874 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:53:22,876 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:53:22,877 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:53:22,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:53:22,885 INFO L82 PathProgramCache]: Analyzing trace with hash -219806221, now seen corresponding path program 1 times [2020-09-24 21:53:22,897 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:53:22,900 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1622824454] [2020-09-24 21:53:22,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:53:23,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:53:23,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:53:24,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:53:24,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:53:24,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:53:24,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:53:24,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:53:25,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:53:28,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:53:28,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 430 [2020-09-24 21:53:28,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 21:53:28,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5041 [2020-09-24 21:53:28,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:53:28,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 21:53:28,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 170 [2020-09-24 21:53:28,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-24 21:53:28,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-24 21:53:29,290 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-24 21:53:29,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:53:29,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:53:29,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:53:29,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:53:29,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-09-24 21:53:29,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:53:29,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-09-24 21:53:29,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:53:29,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:53:29,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:53:29,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:53:29,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:53:29,658 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 21:53:29,659 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1622824454] [2020-09-24 21:53:29,662 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:53:29,662 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 21:53:29,663 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66885356] [2020-09-24 21:53:29,670 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 21:53:29,671 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:53:29,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 21:53:29,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 21:53:29,694 INFO L87 Difference]: Start difference. First operand 1127 states. Second operand 5 states. [2020-09-24 21:53:37,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:53:37,422 INFO L93 Difference]: Finished difference Result 2972 states and 3837 transitions. [2020-09-24 21:53:37,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 21:53:37,425 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 423 [2020-09-24 21:53:37,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:53:37,459 INFO L225 Difference]: With dead ends: 2972 [2020-09-24 21:53:37,459 INFO L226 Difference]: Without dead ends: 1762 [2020-09-24 21:53:37,472 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 21:53:37,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1762 states. [2020-09-24 21:53:37,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1762 to 1640. [2020-09-24 21:53:37,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1640 states. [2020-09-24 21:53:37,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1640 states to 1640 states and 1943 transitions. [2020-09-24 21:53:37,624 INFO L78 Accepts]: Start accepts. Automaton has 1640 states and 1943 transitions. Word has length 423 [2020-09-24 21:53:37,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:53:37,627 INFO L479 AbstractCegarLoop]: Abstraction has 1640 states and 1943 transitions. [2020-09-24 21:53:37,627 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 21:53:37,627 INFO L276 IsEmpty]: Start isEmpty. Operand 1640 states and 1943 transitions. [2020-09-24 21:53:37,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2020-09-24 21:53:37,639 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:53:37,640 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:53:37,640 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 21:53:37,641 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:53:37,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:53:37,641 INFO L82 PathProgramCache]: Analyzing trace with hash -1005988319, now seen corresponding path program 1 times [2020-09-24 21:53:37,642 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:53:37,642 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1312701947] [2020-09-24 21:53:37,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:53:37,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:53:37,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:53:37,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:53:38,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:53:38,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:53:38,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:53:38,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:53:41,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:53:42,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:53:42,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:53:42,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:53:42,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 431 [2020-09-24 21:53:42,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-24 21:53:42,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5049 [2020-09-24 21:53:42,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:53:42,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 21:53:42,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 172 [2020-09-24 21:53:42,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-09-24 21:53:42,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:53:43,237 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-24 21:53:43,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:53:43,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:53:43,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:53:43,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:53:43,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-09-24 21:53:43,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:53:43,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-09-24 21:53:43,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:53:43,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:53:43,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:53:43,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:53:43,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:53:43,599 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 21:53:43,600 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1312701947] [2020-09-24 21:53:43,600 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:53:43,600 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 21:53:43,600 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772763166] [2020-09-24 21:53:43,604 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 21:53:43,604 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:53:43,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 21:53:43,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 21:53:43,605 INFO L87 Difference]: Start difference. First operand 1640 states and 1943 transitions. Second operand 5 states. [2020-09-24 21:53:50,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:53:50,320 INFO L93 Difference]: Finished difference Result 4412 states and 5263 transitions. [2020-09-24 21:53:50,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 21:53:50,322 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 424 [2020-09-24 21:53:50,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:53:50,336 INFO L225 Difference]: With dead ends: 4412 [2020-09-24 21:53:50,337 INFO L226 Difference]: Without dead ends: 3006 [2020-09-24 21:53:50,341 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 21:53:50,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3006 states. [2020-09-24 21:53:50,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3006 to 2884. [2020-09-24 21:53:50,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2884 states. [2020-09-24 21:53:50,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2884 states to 2884 states and 3443 transitions. [2020-09-24 21:53:50,451 INFO L78 Accepts]: Start accepts. Automaton has 2884 states and 3443 transitions. Word has length 424 [2020-09-24 21:53:50,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:53:50,452 INFO L479 AbstractCegarLoop]: Abstraction has 2884 states and 3443 transitions. [2020-09-24 21:53:50,452 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 21:53:50,453 INFO L276 IsEmpty]: Start isEmpty. Operand 2884 states and 3443 transitions. [2020-09-24 21:53:50,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 426 [2020-09-24 21:53:50,460 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:53:50,461 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:53:50,461 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 21:53:50,461 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:53:50,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:53:50,462 INFO L82 PathProgramCache]: Analyzing trace with hash -870507641, now seen corresponding path program 1 times [2020-09-24 21:53:50,462 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:53:50,462 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1999021703] [2020-09-24 21:53:50,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:53:50,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:53:50,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:53:50,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:53:50,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:53:50,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:53:51,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:53:52,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:53:52,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:53:53,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:53:55,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:53:55,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 432 [2020-09-24 21:53:55,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 21:53:55,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-24 21:53:55,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:53:55,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 21:53:55,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 173 [2020-09-24 21:53:55,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-09-24 21:53:55,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:53:56,154 WARN L193 SmtUtils]: Spent 407.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-24 21:53:56,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:53:56,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:53:56,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:53:56,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:53:56,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-09-24 21:53:56,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:53:56,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-09-24 21:53:56,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:53:56,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:53:56,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:53:56,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:53:56,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:53:56,662 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 21:53:56,662 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1999021703] [2020-09-24 21:53:56,663 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:53:56,664 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 21:53:56,664 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499122603] [2020-09-24 21:53:56,666 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 21:53:56,666 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:53:56,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 21:53:56,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 21:53:56,668 INFO L87 Difference]: Start difference. First operand 2884 states and 3443 transitions. Second operand 5 states. [2020-09-24 21:54:03,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:54:03,877 INFO L93 Difference]: Finished difference Result 7735 states and 9275 transitions. [2020-09-24 21:54:03,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 21:54:03,878 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 425 [2020-09-24 21:54:03,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:54:03,900 INFO L225 Difference]: With dead ends: 7735 [2020-09-24 21:54:03,900 INFO L226 Difference]: Without dead ends: 5405 [2020-09-24 21:54:03,905 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 21:54:03,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5405 states. [2020-09-24 21:54:04,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5405 to 5297. [2020-09-24 21:54:04,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5297 states. [2020-09-24 21:54:04,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5297 states to 5297 states and 6328 transitions. [2020-09-24 21:54:04,110 INFO L78 Accepts]: Start accepts. Automaton has 5297 states and 6328 transitions. Word has length 425 [2020-09-24 21:54:04,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:54:04,111 INFO L479 AbstractCegarLoop]: Abstraction has 5297 states and 6328 transitions. [2020-09-24 21:54:04,112 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 21:54:04,112 INFO L276 IsEmpty]: Start isEmpty. Operand 5297 states and 6328 transitions. [2020-09-24 21:54:04,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 427 [2020-09-24 21:54:04,126 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:54:04,127 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:54:04,127 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 21:54:04,127 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:54:04,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:54:04,129 INFO L82 PathProgramCache]: Analyzing trace with hash -451058485, now seen corresponding path program 1 times [2020-09-24 21:54:04,135 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:54:04,136 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1919912898] [2020-09-24 21:54:04,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:54:04,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:54:04,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:54:04,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:54:04,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:54:04,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:54:04,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:54:05,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:54:06,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:54:06,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:54:07,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:54:07,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking...