/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=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 00:07:14,697 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 00:07:14,701 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 00:07:14,743 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 00:07:14,744 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 00:07:14,754 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 00:07:14,756 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 00:07:14,760 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 00:07:14,764 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 00:07:14,765 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 00:07:14,766 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 00:07:14,768 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 00:07:14,768 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 00:07:14,771 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 00:07:14,774 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 00:07:14,776 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 00:07:14,778 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 00:07:14,779 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 00:07:14,780 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 00:07:14,787 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 00:07:14,789 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 00:07:14,790 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 00:07:14,792 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 00:07:14,793 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 00:07:14,797 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 00:07:14,798 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 00:07:14,798 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 00:07:14,801 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 00:07:14,801 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 00:07:14,803 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 00:07:14,804 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 00:07:14,804 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 00:07:14,805 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 00:07:14,806 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 00:07:14,807 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 00:07:14,807 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 00:07:14,808 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 00:07:14,808 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 00:07:14,809 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 00:07:14,810 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 00:07:14,811 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 00:07:14,811 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 00:07:14,837 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 00:07:14,838 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 00:07:14,839 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 00:07:14,839 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 00:07:14,839 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 00:07:14,840 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 00:07:14,840 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 00:07:14,840 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 00:07:14,840 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 00:07:14,840 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 00:07:14,841 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 00:07:14,841 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 00:07:14,841 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 00:07:14,841 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 00:07:14,841 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 00:07:14,841 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 00:07:14,842 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 00:07:14,842 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 00:07:14,842 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 00:07:14,842 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 00:07:14,842 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 00:07:14,843 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 00:07:14,843 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 00:07:14,843 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 00:07:14,843 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 00:07:14,843 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 00:07:14,844 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 00:07:14,844 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 00:07:14,844 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 00:07:14,844 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=SHALLOWEST;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=SHALLOWEST;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=SHALLOWEST;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=SHALLOWEST;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=SHALLOWEST;log-additional-information=true; [2020-09-25 00:07:15,296 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 00:07:15,317 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 00:07:15,323 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 00:07:15,325 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 00:07:15,326 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 00:07:15,327 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-09-25 00:07:15,419 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d1b79cba0/f5686804d36542fe9a145a12ed33c04b/FLAGe6576b52d [2020-09-25 00:07:16,076 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 00:07:16,077 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-09-25 00:07:16,094 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d1b79cba0/f5686804d36542fe9a145a12ed33c04b/FLAGe6576b52d [2020-09-25 00:07:16,293 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d1b79cba0/f5686804d36542fe9a145a12ed33c04b [2020-09-25 00:07:16,311 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 00:07:16,317 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 00:07:16,318 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 00:07:16,318 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 00:07:16,322 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 00:07:16,323 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:07:16" (1/1) ... [2020-09-25 00:07:16,327 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@880c026 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:07:16, skipping insertion in model container [2020-09-25 00:07:16,327 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:07:16" (1/1) ... [2020-09-25 00:07:16,336 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 00:07:16,404 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 00:07:17,122 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 00:07:17,147 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 00:07:17,555 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 00:07:17,582 INFO L208 MainTranslator]: Completed translation [2020-09-25 00:07:17,583 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:07:17 WrapperNode [2020-09-25 00:07:17,583 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 00:07:17,584 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 00:07:17,584 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 00:07:17,584 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 00:07:17,603 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:07:17" (1/1) ... [2020-09-25 00:07:17,603 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:07:17" (1/1) ... [2020-09-25 00:07:17,623 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:07:17" (1/1) ... [2020-09-25 00:07:17,624 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:07:17" (1/1) ... [2020-09-25 00:07:17,656 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:07:17" (1/1) ... [2020-09-25 00:07:17,683 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:07:17" (1/1) ... [2020-09-25 00:07:17,688 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:07:17" (1/1) ... [2020-09-25 00:07:17,697 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 00:07:17,697 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 00:07:17,698 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 00:07:17,698 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 00:07:17,699 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:07:17" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 00:07:17,809 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 00:07:17,810 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 00:07:17,810 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-25 00:07:17,810 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 00:07:17,811 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 00:07:17,811 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-25 00:07:17,811 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-09-25 00:07:17,812 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-09-25 00:07:17,813 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 00:07:17,813 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-25 00:07:17,813 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-09-25 00:07:17,814 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-09-25 00:07:17,814 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-09-25 00:07:17,815 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-09-25 00:07:17,815 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-09-25 00:07:17,816 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-09-25 00:07:17,816 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-09-25 00:07:17,816 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 00:07:17,816 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 00:07:17,817 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 00:07:20,018 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 00:07:20,019 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 00:07:20,032 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:07:20 BoogieIcfgContainer [2020-09-25 00:07:20,033 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 00:07:20,034 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 00:07:20,034 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 00:07:20,038 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 00:07:20,038 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:07:16" (1/3) ... [2020-09-25 00:07:20,039 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cb2bf95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:07:20, skipping insertion in model container [2020-09-25 00:07:20,039 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:07:17" (2/3) ... [2020-09-25 00:07:20,040 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cb2bf95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:07:20, skipping insertion in model container [2020-09-25 00:07:20,040 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:07:20" (3/3) ... [2020-09-25 00:07:20,042 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-09-25 00:07:20,054 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 00:07:20,066 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-09-25 00:07:20,085 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-09-25 00:07:20,120 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 00:07:20,120 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 00:07:20,120 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 00:07:20,121 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 00:07:20,121 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 00:07:20,121 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 00:07:20,121 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 00:07:20,121 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 00:07:20,162 INFO L276 IsEmpty]: Start isEmpty. Operand 1127 states. [2020-09-25 00:07:20,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 424 [2020-09-25 00:07:20,201 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:07:20,203 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:07:20,204 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:07:20,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:07:20,212 INFO L82 PathProgramCache]: Analyzing trace with hash -219806221, now seen corresponding path program 1 times [2020-09-25 00:07:20,223 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:07:20,223 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2004840099] [2020-09-25 00:07:20,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:07:20,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:07:20,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:07:21,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:07:21,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:07:21,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:07:21,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:07:22,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:07:22,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:07:25,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:07:25,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 430 [2020-09-25 00:07:25,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 00:07:25,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5139 [2020-09-25 00:07:25,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:07:25,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 00:07:25,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 170 [2020-09-25 00:07:25,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-25 00:07:25,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 00:07:26,490 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-25 00:07:26,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:07:26,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:07:26,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:07:26,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:07:26,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-09-25 00:07:26,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:07:26,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-09-25 00:07:26,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:07:26,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:07:26,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:07:26,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:07:26,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:07:26,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 00:07:26,885 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2004840099] [2020-09-25 00:07:26,887 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 00:07:26,888 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 00:07:26,889 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226624626] [2020-09-25 00:07:26,897 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 00:07:26,897 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:07:26,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 00:07:26,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 00:07:26,928 INFO L87 Difference]: Start difference. First operand 1127 states. Second operand 5 states. [2020-09-25 00:07:34,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:07:34,527 INFO L93 Difference]: Finished difference Result 2972 states and 3837 transitions. [2020-09-25 00:07:34,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 00:07:34,530 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 423 [2020-09-25 00:07:34,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:07:34,564 INFO L225 Difference]: With dead ends: 2972 [2020-09-25 00:07:34,564 INFO L226 Difference]: Without dead ends: 1762 [2020-09-25 00:07:34,576 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 00:07:34,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1762 states. [2020-09-25 00:07:34,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1762 to 1640. [2020-09-25 00:07:34,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1640 states. [2020-09-25 00:07:34,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1640 states to 1640 states and 1943 transitions. [2020-09-25 00:07:34,723 INFO L78 Accepts]: Start accepts. Automaton has 1640 states and 1943 transitions. Word has length 423 [2020-09-25 00:07:34,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:07:34,724 INFO L479 AbstractCegarLoop]: Abstraction has 1640 states and 1943 transitions. [2020-09-25 00:07:34,725 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 00:07:34,725 INFO L276 IsEmpty]: Start isEmpty. Operand 1640 states and 1943 transitions. [2020-09-25 00:07:34,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2020-09-25 00:07:34,736 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:07:34,736 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:07:34,737 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 00:07:34,737 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:07:34,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:07:34,738 INFO L82 PathProgramCache]: Analyzing trace with hash -1005988319, now seen corresponding path program 1 times [2020-09-25 00:07:34,738 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:07:34,738 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [302954414] [2020-09-25 00:07:34,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:07:34,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:07:34,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:07:35,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:07:35,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:07:35,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:07:35,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:07:35,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:07:38,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:07:38,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:07:39,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:07:39,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:07:39,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 431 [2020-09-25 00:07:39,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 00:07:39,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-09-25 00:07:39,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:07:39,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 00:07:39,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 172 [2020-09-25 00:07:39,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-09-25 00:07:39,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:07:40,374 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-25 00:07:40,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:07:40,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:07:40,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:07:40,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:07:40,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-09-25 00:07:40,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:07:40,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-09-25 00:07:40,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:07:40,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:07:40,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:07:40,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:07:40,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:07:40,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 00:07:40,890 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [302954414] [2020-09-25 00:07:40,890 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 00:07:40,891 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 00:07:40,891 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123549157] [2020-09-25 00:07:40,897 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 00:07:40,897 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:07:40,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 00:07:40,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 00:07:40,899 INFO L87 Difference]: Start difference. First operand 1640 states and 1943 transitions. Second operand 5 states. [2020-09-25 00:07:46,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:07:46,830 INFO L93 Difference]: Finished difference Result 4426 states and 5283 transitions. [2020-09-25 00:07:46,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 00:07:46,835 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 424 [2020-09-25 00:07:46,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:07:46,849 INFO L225 Difference]: With dead ends: 4426 [2020-09-25 00:07:46,849 INFO L226 Difference]: Without dead ends: 3004 [2020-09-25 00:07:46,853 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 00:07:46,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3004 states. [2020-09-25 00:07:46,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3004 to 2882. [2020-09-25 00:07:46,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2882 states. [2020-09-25 00:07:46,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2882 states to 2882 states and 3439 transitions. [2020-09-25 00:07:46,953 INFO L78 Accepts]: Start accepts. Automaton has 2882 states and 3439 transitions. Word has length 424 [2020-09-25 00:07:46,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:07:46,954 INFO L479 AbstractCegarLoop]: Abstraction has 2882 states and 3439 transitions. [2020-09-25 00:07:46,954 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 00:07:46,954 INFO L276 IsEmpty]: Start isEmpty. Operand 2882 states and 3439 transitions. [2020-09-25 00:07:46,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 426 [2020-09-25 00:07:46,961 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:07:46,962 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:07:46,962 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 00:07:46,962 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:07:46,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:07:46,963 INFO L82 PathProgramCache]: Analyzing trace with hash -870507641, now seen corresponding path program 1 times [2020-09-25 00:07:46,963 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:07:46,963 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2119181690] [2020-09-25 00:07:46,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:07:47,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:07:47,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:07:47,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:07:47,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:07:47,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:07:47,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:07:48,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:07:48,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:07:49,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:07:52,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:07:52,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 432 [2020-09-25 00:07:52,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 00:07:52,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 00:07:52,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:07:52,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 00:07:52,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 173 [2020-09-25 00:07:52,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-09-25 00:07:52,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:07:52,562 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-25 00:07:52,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:07:52,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:07:52,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:07:52,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:07:52,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-09-25 00:07:52,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:07:52,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-09-25 00:07:52,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:07:52,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:07:52,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:07:52,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:07:52,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:07:52,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 00:07:52,788 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2119181690] [2020-09-25 00:07:52,788 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 00:07:52,788 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 00:07:52,789 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677222826] [2020-09-25 00:07:52,789 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 00:07:52,790 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:07:52,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 00:07:52,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 00:07:52,790 INFO L87 Difference]: Start difference. First operand 2882 states and 3439 transitions. Second operand 5 states. [2020-09-25 00:07:59,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:07:59,119 INFO L93 Difference]: Finished difference Result 7732 states and 9269 transitions. [2020-09-25 00:07:59,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 00:07:59,120 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 425 [2020-09-25 00:07:59,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:07:59,142 INFO L225 Difference]: With dead ends: 7732 [2020-09-25 00:07:59,142 INFO L226 Difference]: Without dead ends: 5402 [2020-09-25 00:07:59,147 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 00:07:59,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5402 states. [2020-09-25 00:07:59,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5402 to 5294. [2020-09-25 00:07:59,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5294 states. [2020-09-25 00:07:59,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5294 states to 5294 states and 6322 transitions. [2020-09-25 00:07:59,324 INFO L78 Accepts]: Start accepts. Automaton has 5294 states and 6322 transitions. Word has length 425 [2020-09-25 00:07:59,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:07:59,325 INFO L479 AbstractCegarLoop]: Abstraction has 5294 states and 6322 transitions. [2020-09-25 00:07:59,326 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 00:07:59,326 INFO L276 IsEmpty]: Start isEmpty. Operand 5294 states and 6322 transitions. [2020-09-25 00:07:59,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 427 [2020-09-25 00:07:59,337 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:07:59,338 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:07:59,338 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 00:07:59,339 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:07:59,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:07:59,339 INFO L82 PathProgramCache]: Analyzing trace with hash -451058485, now seen corresponding path program 1 times [2020-09-25 00:07:59,341 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:07:59,344 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [259491859] [2020-09-25 00:07:59,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:07:59,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:07:59,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:07:59,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:07:59,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:07:59,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:08:00,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:08:01,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:08:01,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:08:02,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:08:02,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:08:02,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:08:04,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:08:04,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 433 [2020-09-25 00:08:04,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 00:08:04,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5053 [2020-09-25 00:08:04,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:08:04,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 00:08:04,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 171 [2020-09-25 00:08:04,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 170 [2020-09-25 00:08:04,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:08:04,923 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-25 00:08:04,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:08:04,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:08:04,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:08:04,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:08:04,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-09-25 00:08:04,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:08:04,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-09-25 00:08:04,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:08:04,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:08:04,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:08:04,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:08:04,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0