/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=HIGHLEXORDER --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 22:59:32,987 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 22:59:32,992 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 22:59:33,036 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 22:59:33,037 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 22:59:33,044 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 22:59:33,047 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 22:59:33,050 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 22:59:33,053 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 22:59:33,056 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 22:59:33,056 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 22:59:33,057 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 22:59:33,058 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 22:59:33,061 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 22:59:33,063 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 22:59:33,065 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 22:59:33,067 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 22:59:33,068 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 22:59:33,069 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 22:59:33,078 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 22:59:33,080 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 22:59:33,081 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 22:59:33,082 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 22:59:33,083 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 22:59:33,096 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 22:59:33,096 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 22:59:33,097 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 22:59:33,105 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 22:59:33,105 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 22:59:33,106 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 22:59:33,107 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 22:59:33,107 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 22:59:33,108 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 22:59:33,109 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 22:59:33,109 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 22:59:33,112 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 22:59:33,113 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 22:59:33,113 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 22:59:33,114 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 22:59:33,115 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 22:59:33,115 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 22:59:33,116 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 22:59:33,150 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 22:59:33,150 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 22:59:33,152 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 22:59:33,152 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 22:59:33,152 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 22:59:33,152 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 22:59:33,153 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 22:59:33,153 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 22:59:33,153 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 22:59:33,153 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 22:59:33,153 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 22:59:33,154 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 22:59:33,154 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 22:59:33,154 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 22:59:33,154 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 22:59:33,155 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 22:59:33,155 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 22:59:33,155 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 22:59:33,155 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 22:59:33,155 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 22:59:33,156 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 22:59:33,156 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 22:59:33,156 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 22:59:33,156 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 22:59:33,156 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 22:59:33,157 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 22:59:33,157 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 22:59:33,157 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 22:59:33,157 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 22:59:33,157 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=HIGHLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=HIGHLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=HIGHLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=HIGHLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=HIGHLEXORDER;log-additional-information=true; [2020-09-24 22:59:33,593 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 22:59:33,611 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 22:59:33,616 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 22:59:33,618 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 22:59:33,619 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 22:59:33,620 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2020-09-24 22:59:33,713 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c8d8f88a3/ee336e0836614d89a3662edfea25ac98/FLAG1b0fa51a6 [2020-09-24 22:59:34,475 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 22:59:34,476 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2020-09-24 22:59:34,495 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c8d8f88a3/ee336e0836614d89a3662edfea25ac98/FLAG1b0fa51a6 [2020-09-24 22:59:34,597 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c8d8f88a3/ee336e0836614d89a3662edfea25ac98 [2020-09-24 22:59:34,614 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 22:59:34,621 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 22:59:34,626 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 22:59:34,626 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 22:59:34,631 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 22:59:34,632 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 10:59:34" (1/1) ... [2020-09-24 22:59:34,637 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1225839d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:59:34, skipping insertion in model container [2020-09-24 22:59:34,638 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 10:59:34" (1/1) ... [2020-09-24 22:59:34,648 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 22:59:34,792 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 22:59:35,944 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 22:59:35,958 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 22:59:36,404 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 22:59:36,429 INFO L208 MainTranslator]: Completed translation [2020-09-24 22:59:36,429 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:59:36 WrapperNode [2020-09-24 22:59:36,430 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 22:59:36,430 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 22:59:36,431 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 22:59:36,431 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 22:59:36,448 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:59:36" (1/1) ... [2020-09-24 22:59:36,449 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:59:36" (1/1) ... [2020-09-24 22:59:36,476 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:59:36" (1/1) ... [2020-09-24 22:59:36,477 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:59:36" (1/1) ... [2020-09-24 22:59:36,541 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:59:36" (1/1) ... [2020-09-24 22:59:36,578 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:59:36" (1/1) ... [2020-09-24 22:59:36,595 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:59:36" (1/1) ... [2020-09-24 22:59:36,617 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 22:59:36,617 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 22:59:36,618 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 22:59:36,620 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 22:59:36,622 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:59:36" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 22:59:36,744 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 22:59:36,744 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 22:59:36,744 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-24 22:59:36,745 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 22:59:36,745 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 22:59:36,745 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-24 22:59:36,746 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-09-24 22:59:36,746 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-09-24 22:59:36,748 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-24 22:59:36,748 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-24 22:59:36,748 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-09-24 22:59:36,748 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-09-24 22:59:36,749 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-09-24 22:59:36,749 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-09-24 22:59:36,749 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-09-24 22:59:36,751 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-09-24 22:59:36,751 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-09-24 22:59:36,751 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-09-24 22:59:36,752 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 22:59:36,752 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 22:59:36,752 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 22:59:40,242 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 22:59:40,242 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 22:59:40,257 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 10:59:40 BoogieIcfgContainer [2020-09-24 22:59:40,257 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 22:59:40,259 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 22:59:40,259 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 22:59:40,263 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 22:59:40,263 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 10:59:34" (1/3) ... [2020-09-24 22:59:40,264 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@391c3dfe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 10:59:40, skipping insertion in model container [2020-09-24 22:59:40,265 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:59:36" (2/3) ... [2020-09-24 22:59:40,265 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@391c3dfe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 10:59:40, skipping insertion in model container [2020-09-24 22:59:40,265 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 10:59:40" (3/3) ... [2020-09-24 22:59:40,268 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2020-09-24 22:59:40,280 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 22:59:40,293 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 22:59:40,316 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 22:59:40,359 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 22:59:40,359 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 22:59:40,360 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 22:59:40,360 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 22:59:40,360 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 22:59:40,360 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 22:59:40,360 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 22:59:40,360 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 22:59:40,415 INFO L276 IsEmpty]: Start isEmpty. Operand 2022 states. [2020-09-24 22:59:40,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 933 [2020-09-24 22:59:40,516 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:59:40,518 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:59:40,519 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:59:40,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:59:40,528 INFO L82 PathProgramCache]: Analyzing trace with hash -272093385, now seen corresponding path program 1 times [2020-09-24 22:59:40,539 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:59:40,540 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [699078729] [2020-09-24 22:59:40,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:59:41,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:59:42,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:59:43,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:59:44,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:59:44,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:59:45,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:59:46,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:59:46,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:59:46,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:59:46,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 939 [2020-09-24 22:59:46,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 22:59:46,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5074 [2020-09-24 22:59:46,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:59:46,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:59:46,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 394 [2020-09-24 22:59:46,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 482 [2020-09-24 22:59:46,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-24 22:59:48,374 WARN L193 SmtUtils]: Spent 652.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-09-24 22:59:48,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:59:48,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:59:48,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:59:48,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:59:48,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-09-24 22:59:48,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:59:48,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-09-24 22:59:48,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:59:48,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:59:48,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:59:48,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:59:48,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:59:49,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 22:59:49,183 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [699078729] [2020-09-24 22:59:49,185 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:59:49,185 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 22:59:49,186 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000491502] [2020-09-24 22:59:49,200 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 22:59:49,200 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:59:49,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 22:59:49,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 22:59:49,218 INFO L87 Difference]: Start difference. First operand 2022 states. Second operand 4 states. [2020-09-24 22:59:58,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:59:58,610 INFO L93 Difference]: Finished difference Result 3529 states and 4643 transitions. [2020-09-24 22:59:58,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 22:59:58,612 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 932 [2020-09-24 22:59:58,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:59:58,654 INFO L225 Difference]: With dead ends: 3529 [2020-09-24 22:59:58,654 INFO L226 Difference]: Without dead ends: 2855 [2020-09-24 22:59:58,664 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 22:59:58,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2855 states. [2020-09-24 22:59:58,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2855 to 2842. [2020-09-24 22:59:58,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2842 states. [2020-09-24 22:59:58,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2842 states to 2842 states and 3559 transitions. [2020-09-24 22:59:58,830 INFO L78 Accepts]: Start accepts. Automaton has 2842 states and 3559 transitions. Word has length 932 [2020-09-24 22:59:58,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:59:58,833 INFO L479 AbstractCegarLoop]: Abstraction has 2842 states and 3559 transitions. [2020-09-24 22:59:58,833 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 22:59:58,833 INFO L276 IsEmpty]: Start isEmpty. Operand 2842 states and 3559 transitions. [2020-09-24 22:59:58,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 933 [2020-09-24 22:59:58,972 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:59:58,973 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:59:58,974 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 22:59:58,974 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:59:58,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:59:58,975 INFO L82 PathProgramCache]: Analyzing trace with hash 1335477111, now seen corresponding path program 1 times [2020-09-24 22:59:58,976 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:59:58,976 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [507475189] [2020-09-24 22:59:58,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:59:59,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:00:00,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:00:00,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:00:01,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:00:01,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:00:02,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:00:02,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:00:02,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:00:03,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:00:04,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:00:04,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:00:04,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 939 [2020-09-24 23:00:04,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-24 23:00:04,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-09-24 23:00:04,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 23:00:04,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 23:00:04,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 289 [2020-09-24 23:00:04,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 175 [2020-09-24 23:00:04,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:00:06,066 WARN L193 SmtUtils]: Spent 745.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-09-24 23:00:06,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:00:06,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:00:06,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:00:06,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:00:06,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-09-24 23:00:06,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:00:06,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-09-24 23:00:06,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 23:00:06,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:00:06,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:00:06,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:00:06,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:00:07,084 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 23:00:07,084 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [507475189] [2020-09-24 23:00:07,085 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 23:00:07,085 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 23:00:07,085 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648390514] [2020-09-24 23:00:07,088 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 23:00:07,089 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:00:07,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 23:00:07,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 23:00:07,089 INFO L87 Difference]: Start difference. First operand 2842 states and 3559 transitions. Second operand 5 states. [2020-09-24 23:00:20,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:00:20,812 INFO L93 Difference]: Finished difference Result 7737 states and 9803 transitions. [2020-09-24 23:00:20,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 23:00:20,816 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 932 [2020-09-24 23:00:20,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:00:20,848 INFO L225 Difference]: With dead ends: 7737 [2020-09-24 23:00:20,848 INFO L226 Difference]: Without dead ends: 5251 [2020-09-24 23:00:20,855 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 23:00:20,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5251 states. [2020-09-24 23:00:21,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5251 to 5249. [2020-09-24 23:00:21,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5249 states. [2020-09-24 23:00:21,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5249 states to 5249 states and 6610 transitions. [2020-09-24 23:00:21,041 INFO L78 Accepts]: Start accepts. Automaton has 5249 states and 6610 transitions. Word has length 932 [2020-09-24 23:00:21,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:00:21,043 INFO L479 AbstractCegarLoop]: Abstraction has 5249 states and 6610 transitions. [2020-09-24 23:00:21,043 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 23:00:21,043 INFO L276 IsEmpty]: Start isEmpty. Operand 5249 states and 6610 transitions. [2020-09-24 23:00:21,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 935 [2020-09-24 23:00:21,063 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:00:21,064 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:00:21,064 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 23:00:21,064 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:00:21,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:00:21,065 INFO L82 PathProgramCache]: Analyzing trace with hash -1319949167, now seen corresponding path program 1 times [2020-09-24 23:00:21,065 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:00:21,066 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [293522078] [2020-09-24 23:00:21,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:00:21,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:00:21,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:00:21,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:00:22,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:00:22,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:00:22,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:00:23,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:00:23,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:00:23,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking...