/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 --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=1000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --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.5.2.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 12:38:22,514 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 12:38:22,519 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 12:38:22,567 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 12:38:22,567 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 12:38:22,568 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 12:38:22,570 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 12:38:22,576 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 12:38:22,580 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 12:38:22,582 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 12:38:22,584 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 12:38:22,585 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 12:38:22,585 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 12:38:22,586 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 12:38:22,590 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 12:38:22,592 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 12:38:22,593 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 12:38:22,596 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 12:38:22,598 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 12:38:22,603 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 12:38:22,607 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 12:38:22,610 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 12:38:22,611 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 12:38:22,612 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 12:38:22,618 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 12:38:22,618 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 12:38:22,618 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 12:38:22,622 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 12:38:22,622 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 12:38:22,623 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 12:38:22,624 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 12:38:22,625 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 12:38:22,625 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 12:38:22,626 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 12:38:22,627 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 12:38:22,628 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 12:38:22,628 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 12:38:22,629 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 12:38:22,629 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 12:38:22,630 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 12:38:22,631 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 12:38:22,633 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 [2020-09-21 12:38:22,684 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 12:38:22,685 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 12:38:22,687 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 12:38:22,688 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 12:38:22,688 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 12:38:22,688 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 12:38:22,689 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 12:38:22,689 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 12:38:22,689 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 12:38:22,690 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 12:38:22,691 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 12:38:22,691 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 12:38:22,691 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 12:38:22,692 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 12:38:22,692 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 12:38:22,692 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 12:38:22,693 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 12:38:22,693 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 12:38:22,693 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 12:38:22,693 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 12:38:22,693 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 12:38:22,694 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 12:38:22,694 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 12:38:22,694 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 12:38:22,694 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 12:38:22,695 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 12:38:22,695 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 12:38:22,695 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 12:38:22,695 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 12:38:22,695 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.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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-21 12:38:23,179 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 12:38:23,197 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 12:38:23,201 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 12:38:23,203 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 12:38:23,204 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 12:38:23,205 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.5.2.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c [2020-09-21 12:38:23,305 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8a477811e/e15f7931bd344b3196e0b20e45fe03ac/FLAG996bb9256 [2020-09-21 12:38:24,113 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 12:38:24,114 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.5.2.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c [2020-09-21 12:38:24,149 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8a477811e/e15f7931bd344b3196e0b20e45fe03ac/FLAG996bb9256 [2020-09-21 12:38:24,202 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8a477811e/e15f7931bd344b3196e0b20e45fe03ac [2020-09-21 12:38:24,215 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 12:38:24,220 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 12:38:24,222 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 12:38:24,222 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 12:38:24,226 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 12:38:24,228 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:38:24" (1/1) ... [2020-09-21 12:38:24,232 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12b7bdc5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:38:24, skipping insertion in model container [2020-09-21 12:38:24,232 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:38:24" (1/1) ... [2020-09-21 12:38:24,242 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 12:38:24,421 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 12:38:26,037 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:38:26,054 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 12:38:27,782 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:38:27,826 INFO L208 MainTranslator]: Completed translation [2020-09-21 12:38:27,828 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:38:27 WrapperNode [2020-09-21 12:38:27,828 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 12:38:27,829 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 12:38:27,829 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 12:38:27,829 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 12:38:27,849 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:38:27" (1/1) ... [2020-09-21 12:38:27,851 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:38:27" (1/1) ... [2020-09-21 12:38:27,906 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:38:27" (1/1) ... [2020-09-21 12:38:27,907 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:38:27" (1/1) ... [2020-09-21 12:38:27,988 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:38:27" (1/1) ... [2020-09-21 12:38:28,041 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:38:27" (1/1) ... [2020-09-21 12:38:28,058 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:38:27" (1/1) ... [2020-09-21 12:38:28,088 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 12:38:28,088 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 12:38:28,088 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 12:38:28,088 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 12:38:28,091 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:38:27" (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 [2020-09-21 12:38:28,186 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 12:38:28,187 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 12:38:28,187 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-21 12:38:28,187 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 12:38:28,188 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 12:38:28,188 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-21 12:38:28,188 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-09-21 12:38:28,188 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-09-21 12:38:28,188 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-21 12:38:28,189 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-21 12:38:28,189 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-09-21 12:38:28,189 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-09-21 12:38:28,189 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-09-21 12:38:28,190 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-09-21 12:38:28,190 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-09-21 12:38:28,190 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-09-21 12:38:28,190 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-09-21 12:38:28,191 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-09-21 12:38:28,191 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-09-21 12:38:28,191 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 12:38:28,191 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 12:38:28,192 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 12:38:32,754 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 12:38:32,755 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-21 12:38:32,773 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:38:32 BoogieIcfgContainer [2020-09-21 12:38:32,773 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 12:38:32,775 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 12:38:32,776 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 12:38:32,779 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 12:38:32,780 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 12:38:24" (1/3) ... [2020-09-21 12:38:32,781 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1705a4fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:38:32, skipping insertion in model container [2020-09-21 12:38:32,782 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:38:27" (2/3) ... [2020-09-21 12:38:32,782 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1705a4fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:38:32, skipping insertion in model container [2020-09-21 12:38:32,782 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:38:32" (3/3) ... [2020-09-21 12:38:32,787 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_floodmax.5.2.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c [2020-09-21 12:38:32,797 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 12:38:32,810 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-09-21 12:38:32,833 INFO L251 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-09-21 12:38:32,873 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 12:38:32,873 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 12:38:32,874 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 12:38:32,874 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 12:38:32,874 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 12:38:32,874 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 12:38:32,874 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 12:38:32,874 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 12:38:32,920 INFO L276 IsEmpty]: Start isEmpty. Operand 1371 states. [2020-09-21 12:38:32,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 465 [2020-09-21 12:38:32,977 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:38:32,978 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] [2020-09-21 12:38:32,981 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:38:32,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:38:32,990 INFO L82 PathProgramCache]: Analyzing trace with hash -856462850, now seen corresponding path program 1 times [2020-09-21 12:38:33,002 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:38:33,003 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1010908435] [2020-09-21 12:38:33,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:38:35,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:38:36,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:38:38,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:38:38,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 471 [2020-09-21 12:38:38,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:38:38,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2605 [2020-09-21 12:38:38,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:38:38,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 12:38:38,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-21 12:38:38,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 210 [2020-09-21 12:38:38,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-21 12:38:40,231 WARN L193 SmtUtils]: Spent 1.21 s on a formula simplification that was a NOOP. DAG size: 391 [2020-09-21 12:38:40,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:38:40,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:38:40,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:38:40,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:38:40,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:38:40,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:38:40,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-09-21 12:38:40,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:38:40,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:38:40,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:38:40,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:38:40,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:38:40,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:38:40,832 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1010908435] [2020-09-21 12:38:40,835 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:38:40,835 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-21 12:38:40,836 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433781069] [2020-09-21 12:38:40,844 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 12:38:40,844 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:38:40,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 12:38:40,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:38:40,866 INFO L87 Difference]: Start difference. First operand 1371 states. Second operand 5 states. [2020-09-21 12:38:59,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:38:59,387 INFO L93 Difference]: Finished difference Result 3977 states and 7195 transitions. [2020-09-21 12:38:59,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-21 12:38:59,389 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 464 [2020-09-21 12:38:59,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:38:59,429 INFO L225 Difference]: With dead ends: 3977 [2020-09-21 12:38:59,430 INFO L226 Difference]: Without dead ends: 2667 [2020-09-21 12:38:59,441 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-21 12:38:59,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2667 states. [2020-09-21 12:38:59,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2667 to 2653. [2020-09-21 12:38:59,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2653 states. [2020-09-21 12:38:59,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2653 states to 2653 states and 4356 transitions. [2020-09-21 12:38:59,690 INFO L78 Accepts]: Start accepts. Automaton has 2653 states and 4356 transitions. Word has length 464 [2020-09-21 12:38:59,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:38:59,692 INFO L479 AbstractCegarLoop]: Abstraction has 2653 states and 4356 transitions. [2020-09-21 12:38:59,692 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 12:38:59,692 INFO L276 IsEmpty]: Start isEmpty. Operand 2653 states and 4356 transitions. [2020-09-21 12:38:59,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 467 [2020-09-21 12:38:59,712 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:38:59,713 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] [2020-09-21 12:38:59,714 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 12:38:59,714 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:38:59,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:38:59,715 INFO L82 PathProgramCache]: Analyzing trace with hash 913572962, now seen corresponding path program 1 times [2020-09-21 12:38:59,716 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:38:59,716 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [524317833] [2020-09-21 12:38:59,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:39:00,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:39:00,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:39:00,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:39:01,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:39:01,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 473 [2020-09-21 12:39:01,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:39:01,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1056 [2020-09-21 12:39:01,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:39:01,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:39:01,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-09-21 12:39:01,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 227 [2020-09-21 12:39:01,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-21 12:39:03,006 WARN L193 SmtUtils]: Spent 1.41 s on a formula simplification that was a NOOP. DAG size: 391 [2020-09-21 12:39:03,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:39:03,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:39:03,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:39:03,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:39:03,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:39:03,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:39:03,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-09-21 12:39:03,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:39:03,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:39:03,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:39:03,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:39:03,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:39:03,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:39:03,350 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [524317833] [2020-09-21 12:39:03,350 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:39:03,351 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 12:39:03,351 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917390152] [2020-09-21 12:39:03,354 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 12:39:03,354 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:39:03,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 12:39:03,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 12:39:03,355 INFO L87 Difference]: Start difference. First operand 2653 states and 4356 transitions. Second operand 4 states.