/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=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.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 18:32:05,561 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 18:32:05,565 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 18:32:05,618 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 18:32:05,620 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 18:32:05,631 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 18:32:05,633 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 18:32:05,637 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 18:32:05,640 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 18:32:05,643 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 18:32:05,644 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 18:32:05,647 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 18:32:05,647 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 18:32:05,650 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 18:32:05,653 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 18:32:05,655 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 18:32:05,657 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 18:32:05,658 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 18:32:05,659 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 18:32:05,666 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 18:32:05,669 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 18:32:05,670 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 18:32:05,671 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 18:32:05,672 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 18:32:05,676 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 18:32:05,676 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 18:32:05,676 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 18:32:05,679 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 18:32:05,679 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 18:32:05,680 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 18:32:05,680 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 18:32:05,681 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 18:32:05,682 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 18:32:05,682 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 18:32:05,684 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 18:32:05,684 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 18:32:05,684 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 18:32:05,685 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 18:32:05,685 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 18:32:05,686 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 18:32:05,687 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 18:32:05,689 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 18:32:05,730 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 18:32:05,730 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 18:32:05,731 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 18:32:05,732 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 18:32:05,732 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 18:32:05,732 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 18:32:05,732 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 18:32:05,733 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 18:32:05,733 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 18:32:05,733 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 18:32:05,733 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 18:32:05,733 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 18:32:05,734 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 18:32:05,734 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 18:32:05,734 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 18:32:05,734 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 18:32:05,735 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 18:32:05,735 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 18:32:05,735 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 18:32:05,735 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 18:32:05,735 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 18:32:05,736 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 18:32:05,736 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 18:32:05,736 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 18:32:05,736 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 18:32:05,736 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 18:32:05,737 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 18:32:05,737 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 18:32:05,737 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 18:32:05,737 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=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=5000;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=5000;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=5000;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=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-24 18:32:06,183 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 18:32:06,201 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 18:32:06,206 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 18:32:06,208 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 18:32:06,208 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 18:32:06,209 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-09-24 18:32:06,295 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ec23af9f6/966ed660582c4c8a84d49d2b512cd4ad/FLAG6601d25bf [2020-09-24 18:32:06,975 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 18:32:06,979 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-09-24 18:32:06,995 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ec23af9f6/966ed660582c4c8a84d49d2b512cd4ad/FLAG6601d25bf [2020-09-24 18:32:07,154 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ec23af9f6/966ed660582c4c8a84d49d2b512cd4ad [2020-09-24 18:32:07,170 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 18:32:07,176 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 18:32:07,178 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 18:32:07,178 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 18:32:07,183 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 18:32:07,184 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:32:07" (1/1) ... [2020-09-24 18:32:07,188 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@684fb7f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:32:07, skipping insertion in model container [2020-09-24 18:32:07,189 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:32:07" (1/1) ... [2020-09-24 18:32:07,198 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 18:32:07,268 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 18:32:07,917 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:32:07,947 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 18:32:08,494 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:32:08,525 INFO L208 MainTranslator]: Completed translation [2020-09-24 18:32:08,526 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:32:08 WrapperNode [2020-09-24 18:32:08,526 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 18:32:08,527 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 18:32:08,527 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 18:32:08,527 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 18:32:08,541 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:32:08" (1/1) ... [2020-09-24 18:32:08,542 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:32:08" (1/1) ... [2020-09-24 18:32:08,567 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:32:08" (1/1) ... [2020-09-24 18:32:08,568 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:32:08" (1/1) ... [2020-09-24 18:32:08,624 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:32:08" (1/1) ... [2020-09-24 18:32:08,653 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:32:08" (1/1) ... [2020-09-24 18:32:08,665 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:32:08" (1/1) ... [2020-09-24 18:32:08,675 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 18:32:08,675 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 18:32:08,675 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 18:32:08,676 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 18:32:08,677 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:32:08" (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 18:32:08,775 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 18:32:08,775 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 18:32:08,775 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-24 18:32:08,775 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 18:32:08,776 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 18:32:08,776 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-24 18:32:08,776 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-09-24 18:32:08,776 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-09-24 18:32:08,778 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-09-24 18:32:08,778 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-24 18:32:08,778 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-24 18:32:08,779 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-09-24 18:32:08,779 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-09-24 18:32:08,779 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-09-24 18:32:08,780 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-09-24 18:32:08,781 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-09-24 18:32:08,781 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-09-24 18:32:08,781 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-09-24 18:32:08,781 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 18:32:08,782 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 18:32:08,782 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 18:32:10,923 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 18:32:10,923 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 18:32:10,936 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:32:10 BoogieIcfgContainer [2020-09-24 18:32:10,936 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 18:32:10,937 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 18:32:10,938 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 18:32:10,941 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 18:32:10,941 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 06:32:07" (1/3) ... [2020-09-24 18:32:10,942 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@572c253b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:32:10, skipping insertion in model container [2020-09-24 18:32:10,943 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:32:08" (2/3) ... [2020-09-24 18:32:10,943 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@572c253b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:32:10, skipping insertion in model container [2020-09-24 18:32:10,943 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:32:10" (3/3) ... [2020-09-24 18:32:10,945 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-09-24 18:32:10,958 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 18:32:10,970 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-09-24 18:32:10,991 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-09-24 18:32:11,025 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 18:32:11,025 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 18:32:11,025 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 18:32:11,025 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 18:32:11,025 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 18:32:11,025 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 18:32:11,026 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 18:32:11,026 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 18:32:11,069 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states. [2020-09-24 18:32:11,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2020-09-24 18:32:11,111 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:32:11,112 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:32:11,113 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:32:11,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:32:11,122 INFO L82 PathProgramCache]: Analyzing trace with hash -1272027086, now seen corresponding path program 1 times [2020-09-24 18:32:11,133 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:32:11,134 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [819311211] [2020-09-24 18:32:11,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:32:11,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:32:11,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:32:12,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:32:12,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:32:12,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:32:12,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:32:13,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:32:13,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:32:13,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:32:16,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:32:16,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 421 [2020-09-24 18:32:16,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 18:32:16,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-09-24 18:32:16,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:32:16,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:32:16,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 199 [2020-09-24 18:32:16,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 188 [2020-09-24 18:32:16,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-24 18:32:17,561 WARN L193 SmtUtils]: Spent 419.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 18:32:17,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:32:17,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:32:17,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:32:17,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:32:17,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-24 18:32:17,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:32:17,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-09-24 18:32:17,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:32:17,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:32:17,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:32:17,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:32:17,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:32:18,053 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 18:32:18,054 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [819311211] [2020-09-24 18:32:18,056 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:32:18,057 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 18:32:18,058 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29213489] [2020-09-24 18:32:18,068 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 18:32:18,068 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:32:18,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 18:32:18,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 18:32:18,090 INFO L87 Difference]: Start difference. First operand 1123 states. Second operand 4 states. [2020-09-24 18:32:22,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:32:22,551 INFO L93 Difference]: Finished difference Result 1830 states and 2374 transitions. [2020-09-24 18:32:22,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 18:32:22,554 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 414 [2020-09-24 18:32:22,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:32:22,585 INFO L225 Difference]: With dead ends: 1830 [2020-09-24 18:32:22,585 INFO L226 Difference]: Without dead ends: 1312 [2020-09-24 18:32:22,594 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 18:32:22,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1312 states. [2020-09-24 18:32:22,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1312 to 1303. [2020-09-24 18:32:22,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1303 states. [2020-09-24 18:32:22,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1303 states to 1303 states and 1563 transitions. [2020-09-24 18:32:22,729 INFO L78 Accepts]: Start accepts. Automaton has 1303 states and 1563 transitions. Word has length 414 [2020-09-24 18:32:22,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:32:22,732 INFO L479 AbstractCegarLoop]: Abstraction has 1303 states and 1563 transitions. [2020-09-24 18:32:22,732 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 18:32:22,732 INFO L276 IsEmpty]: Start isEmpty. Operand 1303 states and 1563 transitions. [2020-09-24 18:32:22,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2020-09-24 18:32:22,742 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:32:22,743 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:32:22,743 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 18:32:22,744 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:32:22,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:32:22,744 INFO L82 PathProgramCache]: Analyzing trace with hash -1791071559, now seen corresponding path program 1 times [2020-09-24 18:32:22,745 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:32:22,745 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1861359017] [2020-09-24 18:32:22,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:32:22,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:32:23,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:32:23,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:32:23,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:32:23,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:32:23,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:32:23,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:32:24,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:32:24,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:32:27,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:32:27,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 421 [2020-09-24 18:32:27,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 18:32:27,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-09-24 18:32:27,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:32:27,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 18:32:27,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 165 [2020-09-24 18:32:27,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-09-24 18:32:27,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:32:28,587 WARN L193 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 18:32:28,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:32:28,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:32:28,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:32:28,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:32:28,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-24 18:32:28,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:32:28,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-09-24 18:32:28,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:32:28,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:32:28,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:32:28,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:32:28,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:32:29,242 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 18:32:29,244 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1861359017] [2020-09-24 18:32:29,245 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:32:29,245 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 18:32:29,245 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455267384] [2020-09-24 18:32:29,252 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:32:29,253 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:32:29,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:32:29,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:32:29,254 INFO L87 Difference]: Start difference. First operand 1303 states and 1563 transitions. Second operand 5 states. [2020-09-24 18:32:36,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:32:36,256 INFO L93 Difference]: Finished difference Result 3464 states and 4203 transitions. [2020-09-24 18:32:36,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 18:32:36,257 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 414 [2020-09-24 18:32:36,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:32:36,270 INFO L225 Difference]: With dead ends: 3464 [2020-09-24 18:32:36,270 INFO L226 Difference]: Without dead ends: 2371 [2020-09-24 18:32:36,276 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:32:36,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2371 states. [2020-09-24 18:32:36,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2371 to 2246. [2020-09-24 18:32:36,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2246 states. [2020-09-24 18:32:36,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2246 states to 2246 states and 2730 transitions. [2020-09-24 18:32:36,386 INFO L78 Accepts]: Start accepts. Automaton has 2246 states and 2730 transitions. Word has length 414 [2020-09-24 18:32:36,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:32:36,388 INFO L479 AbstractCegarLoop]: Abstraction has 2246 states and 2730 transitions. [2020-09-24 18:32:36,388 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:32:36,388 INFO L276 IsEmpty]: Start isEmpty. Operand 2246 states and 2730 transitions. [2020-09-24 18:32:36,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 416 [2020-09-24 18:32:36,396 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:32:36,396 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:32:36,397 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 18:32:36,397 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:32:36,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:32:36,397 INFO L82 PathProgramCache]: Analyzing trace with hash -1512250717, now seen corresponding path program 1 times [2020-09-24 18:32:36,398 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:32:36,398 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1543326373] [2020-09-24 18:32:36,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:32:36,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:32:36,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:32:36,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:32:36,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:32:37,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:32:37,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:32:37,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:32:38,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:32:40,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:32:40,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:32:41,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:32:41,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 422 [2020-09-24 18:32:41,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-24 18:32:41,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-09-24 18:32:41,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:32:41,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:32:41,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 172 [2020-09-24 18:32:41,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 18:32:41,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:32:41,865 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 18:32:41,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:32:41,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:32:41,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:32:41,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:32:41,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-24 18:32:41,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:32:41,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-09-24 18:32:41,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:32:41,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:32:41,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:32:41,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:32:41,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:32:42,150 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 18:32:42,150 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1543326373] [2020-09-24 18:32:42,151 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:32:42,152 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 18:32:42,152 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982466795] [2020-09-24 18:32:42,153 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 18:32:42,153 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:32:42,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 18:32:42,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 18:32:42,155 INFO L87 Difference]: Start difference. First operand 2246 states and 2730 transitions. Second operand 4 states. [2020-09-24 18:32:46,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:32:46,108 INFO L93 Difference]: Finished difference Result 6343 states and 7769 transitions. [2020-09-24 18:32:46,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 18:32:46,108 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 415 [2020-09-24 18:32:46,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:32:46,128 INFO L225 Difference]: With dead ends: 6343 [2020-09-24 18:32:46,129 INFO L226 Difference]: Without dead ends: 4310 [2020-09-24 18:32:46,134 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 18:32:46,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4310 states. [2020-09-24 18:32:46,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4310 to 2248. [2020-09-24 18:32:46,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2248 states. [2020-09-24 18:32:46,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2248 states to 2248 states and 2732 transitions. [2020-09-24 18:32:46,238 INFO L78 Accepts]: Start accepts. Automaton has 2248 states and 2732 transitions. Word has length 415 [2020-09-24 18:32:46,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:32:46,239 INFO L479 AbstractCegarLoop]: Abstraction has 2248 states and 2732 transitions. [2020-09-24 18:32:46,239 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 18:32:46,239 INFO L276 IsEmpty]: Start isEmpty. Operand 2248 states and 2732 transitions. [2020-09-24 18:32:46,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 417 [2020-09-24 18:32:46,245 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:32:46,246 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:32:46,246 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 18:32:46,246 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:32:46,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:32:46,252 INFO L82 PathProgramCache]: Analyzing trace with hash 1261271917, now seen corresponding path program 1 times [2020-09-24 18:32:46,254 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:32:46,254 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [739116086] [2020-09-24 18:32:46,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:32:46,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:32:46,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:32:46,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:32:46,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:32:46,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:32:46,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:32:47,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:32:49,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:32:49,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:32:50,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:32:50,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:32:51,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:32:51,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 423 [2020-09-24 18:32:51,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-24 18:32:51,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-09-24 18:32:51,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:32:51,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 18:32:51,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 169 [2020-09-24 18:32:51,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-09-24 18:32:51,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:32:51,878 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 18:32:51,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:32:51,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:32:51,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:32:51,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:32:51,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-24 18:32:51,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:32:51,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-09-24 18:32:51,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:32:51,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:32:51,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:32:51,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:32:51,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:32:52,201 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 18:32:52,202 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [739116086] [2020-09-24 18:32:52,202 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:32:52,203 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 18:32:52,203 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670010079] [2020-09-24 18:32:52,204 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:32:52,204 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:32:52,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:32:52,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:32:52,205 INFO L87 Difference]: Start difference. First operand 2248 states and 2732 transitions. Second operand 5 states.