/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration false -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 10:32:21,406 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 10:32:21,410 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 10:32:21,438 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 10:32:21,438 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 10:32:21,440 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 10:32:21,441 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 10:32:21,443 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 10:32:21,448 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 10:32:21,450 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 10:32:21,453 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 10:32:21,458 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 10:32:21,458 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 10:32:21,460 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 10:32:21,461 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 10:32:21,464 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 10:32:21,466 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 10:32:21,468 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 10:32:21,472 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 10:32:21,474 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 10:32:21,477 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 10:32:21,479 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 10:32:21,481 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 10:32:21,483 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 10:32:21,490 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 10:32:21,490 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 10:32:21,491 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 10:32:21,495 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 10:32:21,495 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 10:32:21,503 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-09-21 10:32:21,512 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 10:32:21,514 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 10:32:21,515 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 10:32:21,516 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-21 10:32:21,571 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 10:32:21,571 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 10:32:21,574 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 10:32:21,574 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 10:32:21,574 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 10:32:21,574 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 10:32:21,575 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 10:32:21,575 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 10:32:21,575 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 10:32:21,575 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 10:32:21,577 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 10:32:21,577 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 10:32:21,577 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 10:32:21,577 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 10:32:21,578 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 10:32:21,578 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 10:32:21,578 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 10:32:21,578 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 10:32:21,579 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 10:32:21,579 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 10:32:21,579 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 10:32:21,579 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 10:32:21,579 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 10:32:21,580 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 10:32:21,580 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 10:32:21,580 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 10:32:21,580 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 10:32:21,580 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 10:32:21,580 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 10:32:21,581 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> false [2020-09-21 10:32:22,097 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 10:32:22,123 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 10:32:22,129 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 10:32:22,131 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 10:32:22,132 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 10:32:22,133 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-09-21 10:32:22,223 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ea344ac13/f2e56a3a1bf249919e7cf4fa6f46fd1b/FLAGa7fd23b68 [2020-09-21 10:32:22,986 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 10:32:22,987 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-09-21 10:32:23,012 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ea344ac13/f2e56a3a1bf249919e7cf4fa6f46fd1b/FLAGa7fd23b68 [2020-09-21 10:32:23,106 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ea344ac13/f2e56a3a1bf249919e7cf4fa6f46fd1b [2020-09-21 10:32:23,119 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 10:32:23,125 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 10:32:23,126 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 10:32:23,127 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 10:32:23,131 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 10:32:23,132 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 10:32:23" (1/1) ... [2020-09-21 10:32:23,139 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2cc325c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:32:23, skipping insertion in model container [2020-09-21 10:32:23,139 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 10:32:23" (1/1) ... [2020-09-21 10:32:23,149 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 10:32:23,304 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 10:32:24,766 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 10:32:24,781 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 10:32:25,724 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 10:32:25,759 INFO L208 MainTranslator]: Completed translation [2020-09-21 10:32:25,761 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:32:25 WrapperNode [2020-09-21 10:32:25,762 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 10:32:25,763 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 10:32:25,763 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 10:32:25,763 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 10:32:25,784 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:32:25" (1/1) ... [2020-09-21 10:32:25,786 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:32:25" (1/1) ... [2020-09-21 10:32:25,846 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:32:25" (1/1) ... [2020-09-21 10:32:25,849 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:32:25" (1/1) ... [2020-09-21 10:32:25,914 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:32:25" (1/1) ... [2020-09-21 10:32:25,963 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:32:25" (1/1) ... [2020-09-21 10:32:25,978 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:32:25" (1/1) ... [2020-09-21 10:32:26,005 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 10:32:26,006 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 10:32:26,006 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 10:32:26,006 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 10:32:26,009 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:32:25" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 10:32:26,118 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 10:32:26,118 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 10:32:26,119 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-21 10:32:26,119 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 10:32:26,119 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 10:32:26,120 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-21 10:32:26,121 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-09-21 10:32:26,121 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-09-21 10:32:26,121 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-09-21 10:32:26,122 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-21 10:32:26,123 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-21 10:32:26,124 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-09-21 10:32:26,124 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-09-21 10:32:26,124 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-09-21 10:32:26,125 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-09-21 10:32:26,128 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-09-21 10:32:26,128 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-09-21 10:32:26,128 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-09-21 10:32:26,128 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-09-21 10:32:26,129 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 10:32:26,129 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 10:32:26,129 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 10:32:29,551 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 10:32:29,551 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-21 10:32:29,570 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 10:32:29 BoogieIcfgContainer [2020-09-21 10:32:29,571 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 10:32:29,574 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 10:32:29,574 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 10:32:29,579 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 10:32:29,579 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 10:32:23" (1/3) ... [2020-09-21 10:32:29,581 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2885eb6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 10:32:29, skipping insertion in model container [2020-09-21 10:32:29,581 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:32:25" (2/3) ... [2020-09-21 10:32:29,582 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2885eb6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 10:32:29, skipping insertion in model container [2020-09-21 10:32:29,582 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 10:32:29" (3/3) ... [2020-09-21 10:32:29,585 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-09-21 10:32:29,599 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 10:32:29,614 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 12 error locations. [2020-09-21 10:32:29,637 INFO L251 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2020-09-21 10:32:29,680 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 10:32:29,680 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 10:32:29,680 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 10:32:29,681 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 10:32:29,681 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 10:32:29,681 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 10:32:29,681 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 10:32:29,681 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 10:32:29,734 INFO L276 IsEmpty]: Start isEmpty. Operand 1016 states. [2020-09-21 10:32:29,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2020-09-21 10:32:29,786 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:32:29,787 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] [2020-09-21 10:32:29,788 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:32:29,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:32:29,794 INFO L82 PathProgramCache]: Analyzing trace with hash -179235525, now seen corresponding path program 1 times [2020-09-21 10:32:29,805 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:32:29,806 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1494410772] [2020-09-21 10:32:29,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:32:30,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:32:32,073 WARN L193 SmtUtils]: Spent 841.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-09-21 10:32:32,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:32:32,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:32:32,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:32:32,510 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1494410772] [2020-09-21 10:32:32,514 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:32:32,514 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 10:32:32,556 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229393980] [2020-09-21 10:32:32,562 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 10:32:32,563 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:32:32,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 10:32:32,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 10:32:32,594 INFO L87 Difference]: Start difference. First operand 1016 states. Second operand 4 states. [2020-09-21 10:32:33,299 WARN L193 SmtUtils]: Spent 594.00 ms on a formula simplification that was a NOOP. DAG size: 323 [2020-09-21 10:32:41,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:32:41,267 INFO L93 Difference]: Finished difference Result 1776 states and 3147 transitions. [2020-09-21 10:32:41,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 10:32:41,270 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 324 [2020-09-21 10:32:41,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:32:41,307 INFO L225 Difference]: With dead ends: 1776 [2020-09-21 10:32:41,307 INFO L226 Difference]: Without dead ends: 1481 [2020-09-21 10:32:41,315 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-21 10:32:41,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1481 states. [2020-09-21 10:32:41,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1481 to 1479. [2020-09-21 10:32:41,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1479 states. [2020-09-21 10:32:41,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1479 states to 1479 states and 2266 transitions. [2020-09-21 10:32:41,471 INFO L78 Accepts]: Start accepts. Automaton has 1479 states and 2266 transitions. Word has length 324 [2020-09-21 10:32:41,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:32:41,474 INFO L479 AbstractCegarLoop]: Abstraction has 1479 states and 2266 transitions. [2020-09-21 10:32:41,474 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 10:32:41,474 INFO L276 IsEmpty]: Start isEmpty. Operand 1479 states and 2266 transitions. [2020-09-21 10:32:41,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2020-09-21 10:32:41,483 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:32:41,483 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] [2020-09-21 10:32:41,484 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 10:32:41,484 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:32:41,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:32:41,485 INFO L82 PathProgramCache]: Analyzing trace with hash -220420006, now seen corresponding path program 1 times [2020-09-21 10:32:41,485 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:32:41,486 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [890186374] [2020-09-21 10:32:41,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:32:41,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:32:43,050 WARN L193 SmtUtils]: Spent 821.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-09-21 10:32:43,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:32:43,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:32:43,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:32:43,490 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [890186374] [2020-09-21 10:32:43,491 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:32:43,492 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 10:32:43,492 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004922863] [2020-09-21 10:32:43,500 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 10:32:43,501 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:32:43,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 10:32:43,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 10:32:43,502 INFO L87 Difference]: Start difference. First operand 1479 states and 2266 transitions. Second operand 4 states. [2020-09-21 10:32:44,145 WARN L193 SmtUtils]: Spent 578.00 ms on a formula simplification that was a NOOP. DAG size: 323 [2020-09-21 10:32:51,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:32:51,586 INFO L93 Difference]: Finished difference Result 2852 states and 4423 transitions. [2020-09-21 10:32:51,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 10:32:51,589 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 324 [2020-09-21 10:32:51,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:32:51,617 INFO L225 Difference]: With dead ends: 2852 [2020-09-21 10:32:51,618 INFO L226 Difference]: Without dead ends: 2439 [2020-09-21 10:32:51,629 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-21 10:32:51,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2439 states. [2020-09-21 10:32:51,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2439 to 2437. [2020-09-21 10:32:51,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2437 states. [2020-09-21 10:32:51,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2437 states to 2437 states and 3757 transitions. [2020-09-21 10:32:51,748 INFO L78 Accepts]: Start accepts. Automaton has 2437 states and 3757 transitions. Word has length 324 [2020-09-21 10:32:51,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:32:51,750 INFO L479 AbstractCegarLoop]: Abstraction has 2437 states and 3757 transitions. [2020-09-21 10:32:51,750 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 10:32:51,750 INFO L276 IsEmpty]: Start isEmpty. Operand 2437 states and 3757 transitions. [2020-09-21 10:32:51,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2020-09-21 10:32:51,760 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:32:51,761 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] [2020-09-21 10:32:51,762 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 10:32:51,770 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:32:51,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:32:51,771 INFO L82 PathProgramCache]: Analyzing trace with hash -578874774, now seen corresponding path program 1 times [2020-09-21 10:32:51,772 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:32:51,773 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1231714674] [2020-09-21 10:32:51,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:32:52,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:32:53,135 WARN L193 SmtUtils]: Spent 573.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-09-21 10:32:53,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:32:53,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:32:53,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:32:53,418 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1231714674] [2020-09-21 10:32:53,419 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:32:53,420 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-21 10:32:53,420 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326806881] [2020-09-21 10:32:53,421 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 10:32:53,421 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:32:53,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 10:32:53,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-21 10:32:53,423 INFO L87 Difference]: Start difference. First operand 2437 states and 3757 transitions. Second operand 5 states. [2020-09-21 10:33:04,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:33:04,133 INFO L93 Difference]: Finished difference Result 7199 states and 11086 transitions. [2020-09-21 10:33:04,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 10:33:04,133 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 324 [2020-09-21 10:33:04,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:33:04,156 INFO L225 Difference]: With dead ends: 7199 [2020-09-21 10:33:04,157 INFO L226 Difference]: Without dead ends: 4777 [2020-09-21 10:33:04,162 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-21 10:33:04,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4777 states. [2020-09-21 10:33:04,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4777 to 4653. [2020-09-21 10:33:04,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4653 states. [2020-09-21 10:33:04,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4653 states to 4653 states and 7163 transitions. [2020-09-21 10:33:04,352 INFO L78 Accepts]: Start accepts. Automaton has 4653 states and 7163 transitions. Word has length 324 [2020-09-21 10:33:04,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:33:04,352 INFO L479 AbstractCegarLoop]: Abstraction has 4653 states and 7163 transitions. [2020-09-21 10:33:04,352 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 10:33:04,353 INFO L276 IsEmpty]: Start isEmpty. Operand 4653 states and 7163 transitions. [2020-09-21 10:33:04,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2020-09-21 10:33:04,366 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:33:04,366 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] [2020-09-21 10:33:04,366 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 10:33:04,369 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:33:04,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:33:04,370 INFO L82 PathProgramCache]: Analyzing trace with hash 76253758, now seen corresponding path program 1 times [2020-09-21 10:33:04,370 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:33:04,371 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [522671269] [2020-09-21 10:33:04,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:33:04,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:33:05,355 WARN L193 SmtUtils]: Spent 654.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-09-21 10:33:05,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:33:05,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:33:05,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:33:05,559 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [522671269] [2020-09-21 10:33:05,559 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:33:05,559 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 10:33:05,560 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361918140] [2020-09-21 10:33:05,561 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 10:33:05,561 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:33:05,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 10:33:05,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 10:33:05,562 INFO L87 Difference]: Start difference. First operand 4653 states and 7163 transitions. Second operand 4 states. [2020-09-21 10:33:17,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:33:17,409 INFO L93 Difference]: Finished difference Result 13649 states and 20959 transitions. [2020-09-21 10:33:17,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-21 10:33:17,410 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 326 [2020-09-21 10:33:17,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:33:17,449 INFO L225 Difference]: With dead ends: 13649 [2020-09-21 10:33:17,450 INFO L226 Difference]: Without dead ends: 9125 [2020-09-21 10:33:17,459 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 10:33:17,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9125 states. [2020-09-21 10:33:17,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9125 to 9001. [2020-09-21 10:33:17,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9001 states. [2020-09-21 10:33:17,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9001 states to 9001 states and 13804 transitions. [2020-09-21 10:33:17,800 INFO L78 Accepts]: Start accepts. Automaton has 9001 states and 13804 transitions. Word has length 326 [2020-09-21 10:33:17,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:33:17,802 INFO L479 AbstractCegarLoop]: Abstraction has 9001 states and 13804 transitions. [2020-09-21 10:33:17,802 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 10:33:17,803 INFO L276 IsEmpty]: Start isEmpty. Operand 9001 states and 13804 transitions. [2020-09-21 10:33:17,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2020-09-21 10:33:17,833 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:33:17,834 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] [2020-09-21 10:33:17,834 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-21 10:33:17,835 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:33:17,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:33:17,835 INFO L82 PathProgramCache]: Analyzing trace with hash -1985882685, now seen corresponding path program 1 times [2020-09-21 10:33:17,836 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:33:17,836 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [957576119] [2020-09-21 10:33:17,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:33:17,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat