/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 -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 0.1.25-3af5e1f [2020-09-04 14:00:28,570 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 14:00:28,574 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 14:00:28,618 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 14:00:28,618 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 14:00:28,629 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 14:00:28,631 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 14:00:28,636 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 14:00:28,639 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 14:00:28,642 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 14:00:28,643 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 14:00:28,645 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 14:00:28,645 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 14:00:28,648 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 14:00:28,651 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 14:00:28,653 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 14:00:28,655 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 14:00:28,657 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 14:00:28,659 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 14:00:28,670 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 14:00:28,672 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 14:00:28,673 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 14:00:28,674 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 14:00:28,675 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 14:00:28,678 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-04 14:00:28,683 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-04 14:00:28,684 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-04 14:00:28,685 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-04 14:00:28,686 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-04 14:00:28,687 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-04 14:00:28,687 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-04 14:00:28,688 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-04 14:00:28,689 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-04 14:00:28,689 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 14:00:28,690 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 14:00:28,692 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 14:00:28,693 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 [2020-09-04 14:00:28,743 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 14:00:28,744 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 14:00:28,745 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-04 14:00:28,746 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-04 14:00:28,746 INFO L138 SettingsManager]: * Use SBE=true [2020-09-04 14:00:28,746 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 14:00:28,746 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 14:00:28,746 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 14:00:28,747 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 14:00:28,747 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 14:00:28,748 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 14:00:28,748 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 14:00:28,748 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 14:00:28,749 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 14:00:28,749 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 14:00:28,749 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 14:00:28,749 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 14:00:28,750 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 14:00:28,750 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-04 14:00:28,750 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 14:00:28,750 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 14:00:28,750 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 14:00:28,751 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 14:00:28,751 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-04 14:00:28,751 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-04 14:00:28,751 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-04 14:00:28,751 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-04 14:00:28,752 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 14:00:28,752 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-04 14:00:28,752 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-09-04 14:00:29,213 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 14:00:29,233 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 14:00:29,237 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 14:00:29,239 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 14:00:29,240 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 14:00:29,241 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-09-04 14:00:29,333 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7304f2cb7/4b5510da41914b9db566d6404aa6f04f/FLAGe9b003ad2 [2020-09-04 14:00:30,059 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 14:00:30,062 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-09-04 14:00:30,087 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7304f2cb7/4b5510da41914b9db566d6404aa6f04f/FLAGe9b003ad2 [2020-09-04 14:00:30,203 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7304f2cb7/4b5510da41914b9db566d6404aa6f04f [2020-09-04 14:00:30,219 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 14:00:30,222 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 14:00:30,226 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 14:00:30,226 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 14:00:30,231 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 14:00:30,232 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 02:00:30" (1/1) ... [2020-09-04 14:00:30,237 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@328fe5b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 02:00:30, skipping insertion in model container [2020-09-04 14:00:30,237 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 02:00:30" (1/1) ... [2020-09-04 14:00:30,247 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 14:00:30,420 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 14:00:31,911 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 14:00:31,926 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 14:00:32,840 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 14:00:32,883 INFO L208 MainTranslator]: Completed translation [2020-09-04 14:00:32,885 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 02:00:32 WrapperNode [2020-09-04 14:00:32,886 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 14:00:32,887 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 14:00:32,887 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 14:00:32,887 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 14:00:32,911 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 02:00:32" (1/1) ... [2020-09-04 14:00:32,914 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 02:00:32" (1/1) ... [2020-09-04 14:00:32,987 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 02:00:32" (1/1) ... [2020-09-04 14:00:32,987 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 02:00:32" (1/1) ... [2020-09-04 14:00:33,064 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 02:00:32" (1/1) ... [2020-09-04 14:00:33,108 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 02:00:32" (1/1) ... [2020-09-04 14:00:33,128 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 02:00:32" (1/1) ... [2020-09-04 14:00:33,151 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 14:00:33,151 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 14:00:33,152 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 14:00:33,152 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 14:00:33,153 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 02:00:32" (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 [2020-09-04 14:00:33,256 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 14:00:33,256 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 14:00:33,257 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-04 14:00:33,257 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 14:00:33,257 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 14:00:33,257 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-04 14:00:33,257 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-09-04 14:00:33,258 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-09-04 14:00:33,258 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-09-04 14:00:33,258 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-04 14:00:33,258 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-04 14:00:33,259 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-09-04 14:00:33,259 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-09-04 14:00:33,260 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-09-04 14:00:33,260 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-09-04 14:00:33,261 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-09-04 14:00:33,262 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-09-04 14:00:33,262 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-09-04 14:00:33,262 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-09-04 14:00:33,263 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 14:00:33,263 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 14:00:33,263 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 14:00:37,013 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 14:00:37,014 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-04 14:00:37,031 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 02:00:37 BoogieIcfgContainer [2020-09-04 14:00:37,031 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 14:00:37,032 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 14:00:37,032 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 14:00:37,036 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 14:00:37,037 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 02:00:30" (1/3) ... [2020-09-04 14:00:37,038 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@519ac1d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 02:00:37, skipping insertion in model container [2020-09-04 14:00:37,038 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 02:00:32" (2/3) ... [2020-09-04 14:00:37,038 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@519ac1d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 02:00:37, skipping insertion in model container [2020-09-04 14:00:37,039 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 02:00:37" (3/3) ... [2020-09-04 14:00:37,041 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-09-04 14:00:37,053 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-09-04 14:00:37,064 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 12 error locations. [2020-09-04 14:00:37,087 INFO L251 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2020-09-04 14:00:37,122 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 14:00:37,122 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 14:00:37,123 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-04 14:00:37,123 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 14:00:37,123 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 14:00:37,123 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 14:00:37,123 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 14:00:37,123 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 14:00:37,171 INFO L276 IsEmpty]: Start isEmpty. Operand 1016 states. [2020-09-04 14:00:37,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2020-09-04 14:00:37,208 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 14:00:37,210 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] [2020-09-04 14:00:37,211 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]=== [2020-09-04 14:00:37,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 14:00:37,219 INFO L82 PathProgramCache]: Analyzing trace with hash -179235525, now seen corresponding path program 1 times [2020-09-04 14:00:37,231 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 14:00:37,231 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851580259] [2020-09-04 14:00:37,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 14:00:37,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 14:00:39,377 WARN L193 SmtUtils]: Spent 881.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-09-04 14:00:39,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 14:00:39,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 14:00:39,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 14:00:39,801 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851580259] [2020-09-04 14:00:39,802 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 14:00:39,802 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-04 14:00:39,803 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273514450] [2020-09-04 14:00:39,813 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-04 14:00:39,813 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 14:00:39,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-04 14:00:39,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 14:00:39,837 INFO L87 Difference]: Start difference. First operand 1016 states. Second operand 4 states. [2020-09-04 14:00:40,807 WARN L193 SmtUtils]: Spent 878.00 ms on a formula simplification that was a NOOP. DAG size: 323 [2020-09-04 14:00:49,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 14:00:49,530 INFO L93 Difference]: Finished difference Result 1776 states and 3147 transitions. [2020-09-04 14:00:49,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-04 14:00:49,533 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 324 [2020-09-04 14:00:49,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 14:00:49,567 INFO L225 Difference]: With dead ends: 1776 [2020-09-04 14:00:49,567 INFO L226 Difference]: Without dead ends: 1481 [2020-09-04 14:00:49,575 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-04 14:00:49,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1481 states. [2020-09-04 14:00:49,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1481 to 1479. [2020-09-04 14:00:49,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1479 states. [2020-09-04 14:00:49,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1479 states to 1479 states and 2266 transitions. [2020-09-04 14:00:49,737 INFO L78 Accepts]: Start accepts. Automaton has 1479 states and 2266 transitions. Word has length 324 [2020-09-04 14:00:49,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 14:00:49,739 INFO L479 AbstractCegarLoop]: Abstraction has 1479 states and 2266 transitions. [2020-09-04 14:00:49,739 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-04 14:00:49,740 INFO L276 IsEmpty]: Start isEmpty. Operand 1479 states and 2266 transitions. [2020-09-04 14:00:49,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2020-09-04 14:00:49,750 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 14:00:49,750 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] [2020-09-04 14:00:49,751 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 14:00:49,751 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]=== [2020-09-04 14:00:49,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 14:00:49,752 INFO L82 PathProgramCache]: Analyzing trace with hash -220420006, now seen corresponding path program 1 times [2020-09-04 14:00:49,752 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 14:00:49,753 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711220643] [2020-09-04 14:00:49,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 14:00:50,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 14:00:51,273 WARN L193 SmtUtils]: Spent 869.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-09-04 14:00:51,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 14:00:51,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 14:00:51,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 14:00:51,638 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711220643] [2020-09-04 14:00:51,639 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 14:00:51,639 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-04 14:00:51,640 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107198844] [2020-09-04 14:00:51,644 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-04 14:00:51,644 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 14:00:51,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-04 14:00:51,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 14:00:51,645 INFO L87 Difference]: Start difference. First operand 1479 states and 2266 transitions. Second operand 4 states. [2020-09-04 14:00:52,530 WARN L193 SmtUtils]: Spent 802.00 ms on a formula simplification that was a NOOP. DAG size: 323 [2020-09-04 14:01:00,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 14:01:00,694 INFO L93 Difference]: Finished difference Result 2852 states and 4423 transitions. [2020-09-04 14:01:00,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-04 14:01:00,697 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 324 [2020-09-04 14:01:00,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 14:01:00,714 INFO L225 Difference]: With dead ends: 2852 [2020-09-04 14:01:00,715 INFO L226 Difference]: Without dead ends: 2439 [2020-09-04 14:01:00,722 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-04 14:01:00,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2439 states. [2020-09-04 14:01:00,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2439 to 2437. [2020-09-04 14:01:00,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2437 states. [2020-09-04 14:01:00,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2437 states to 2437 states and 3757 transitions. [2020-09-04 14:01:00,821 INFO L78 Accepts]: Start accepts. Automaton has 2437 states and 3757 transitions. Word has length 324 [2020-09-04 14:01:00,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 14:01:00,824 INFO L479 AbstractCegarLoop]: Abstraction has 2437 states and 3757 transitions. [2020-09-04 14:01:00,824 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-04 14:01:00,824 INFO L276 IsEmpty]: Start isEmpty. Operand 2437 states and 3757 transitions. [2020-09-04 14:01:00,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2020-09-04 14:01:00,833 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 14:01:00,833 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] [2020-09-04 14:01:00,834 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 14:01:00,840 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]=== [2020-09-04 14:01:00,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 14:01:00,841 INFO L82 PathProgramCache]: Analyzing trace with hash -578874774, now seen corresponding path program 1 times [2020-09-04 14:01:00,841 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 14:01:00,842 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689999746] [2020-09-04 14:01:00,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 14:01:01,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 14:01:02,378 WARN L193 SmtUtils]: Spent 771.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-09-04 14:01:02,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 14:01:02,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 14:01:02,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 14:01:02,655 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689999746] [2020-09-04 14:01:02,655 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 14:01:02,656 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-04 14:01:02,656 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142774003] [2020-09-04 14:01:02,657 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-04 14:01:02,657 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 14:01:02,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-04 14:01:02,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-04 14:01:02,659 INFO L87 Difference]: Start difference. First operand 2437 states and 3757 transitions. Second operand 5 states. [2020-09-04 14:01:14,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 14:01:14,140 INFO L93 Difference]: Finished difference Result 7199 states and 11086 transitions. [2020-09-04 14:01:14,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-04 14:01:14,141 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 324 [2020-09-04 14:01:14,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 14:01:14,164 INFO L225 Difference]: With dead ends: 7199 [2020-09-04 14:01:14,165 INFO L226 Difference]: Without dead ends: 4777 [2020-09-04 14:01:14,171 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-04 14:01:14,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4777 states. [2020-09-04 14:01:14,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4777 to 4653. [2020-09-04 14:01:14,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4653 states. [2020-09-04 14:01:14,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4653 states to 4653 states and 7163 transitions. [2020-09-04 14:01:14,351 INFO L78 Accepts]: Start accepts. Automaton has 4653 states and 7163 transitions. Word has length 324 [2020-09-04 14:01:14,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 14:01:14,351 INFO L479 AbstractCegarLoop]: Abstraction has 4653 states and 7163 transitions. [2020-09-04 14:01:14,352 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-04 14:01:14,352 INFO L276 IsEmpty]: Start isEmpty. Operand 4653 states and 7163 transitions. [2020-09-04 14:01:14,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2020-09-04 14:01:14,365 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 14:01:14,365 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] [2020-09-04 14:01:14,366 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-04 14:01:14,368 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]=== [2020-09-04 14:01:14,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 14:01:14,369 INFO L82 PathProgramCache]: Analyzing trace with hash 76253758, now seen corresponding path program 1 times [2020-09-04 14:01:14,369 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 14:01:14,370 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619358597] [2020-09-04 14:01:14,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 14:01:14,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 14:01:15,478 WARN L193 SmtUtils]: Spent 735.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-09-04 14:01:15,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 14:01:15,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 14:01:15,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 14:01:15,682 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619358597] [2020-09-04 14:01:15,682 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 14:01:15,683 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-04 14:01:15,683 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111632207] [2020-09-04 14:01:15,684 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-04 14:01:15,684 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 14:01:15,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-04 14:01:15,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 14:01:15,685 INFO L87 Difference]: Start difference. First operand 4653 states and 7163 transitions. Second operand 4 states. [2020-09-04 14:01:27,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 14:01:27,634 INFO L93 Difference]: Finished difference Result 13649 states and 20959 transitions. [2020-09-04 14:01:27,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-04 14:01:27,640 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 326 [2020-09-04 14:01:27,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 14:01:27,681 INFO L225 Difference]: With dead ends: 13649 [2020-09-04 14:01:27,682 INFO L226 Difference]: Without dead ends: 9125 [2020-09-04 14:01:27,692 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 14:01:27,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9125 states. [2020-09-04 14:01:27,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9125 to 9001. [2020-09-04 14:01:27,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9001 states. [2020-09-04 14:01:27,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9001 states to 9001 states and 13804 transitions. [2020-09-04 14:01:27,985 INFO L78 Accepts]: Start accepts. Automaton has 9001 states and 13804 transitions. Word has length 326 [2020-09-04 14:01:27,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 14:01:27,986 INFO L479 AbstractCegarLoop]: Abstraction has 9001 states and 13804 transitions. [2020-09-04 14:01:27,986 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-04 14:01:27,986 INFO L276 IsEmpty]: Start isEmpty. Operand 9001 states and 13804 transitions. [2020-09-04 14:01:28,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2020-09-04 14:01:28,007 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 14:01:28,007 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] [2020-09-04 14:01:28,008 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-04 14:01:28,008 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]=== [2020-09-04 14:01:28,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 14:01:28,008 INFO L82 PathProgramCache]: Analyzing trace with hash -1985882685, now seen corresponding path program 1 times [2020-09-04 14:01:28,009 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 14:01:28,009 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899345404] [2020-09-04 14:01:28,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 14:01:28,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 14:01:29,108 WARN L193 SmtUtils]: Spent 905.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-09-04 14:01:29,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 14:01:29,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 14:01:29,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 14:01:29,227 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899345404] [2020-09-04 14:01:29,227 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 14:01:29,227 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-04 14:01:29,228 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518819490] [2020-09-04 14:01:29,229 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-04 14:01:29,229 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 14:01:29,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-04 14:01:29,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 14:01:29,230 INFO L87 Difference]: Start difference. First operand 9001 states and 13804 transitions. Second operand 4 states. [2020-09-04 14:01:41,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 14:01:41,738 INFO L93 Difference]: Finished difference Result 26928 states and 41288 transitions. [2020-09-04 14:01:41,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-04 14:01:41,739 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 326 [2020-09-04 14:01:41,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 14:01:41,804 INFO L225 Difference]: With dead ends: 26928 [2020-09-04 14:01:41,804 INFO L226 Difference]: Without dead ends: 17969 [2020-09-04 14:01:41,825 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 14:01:41,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17969 states. [2020-09-04 14:01:42,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17969 to 9020. [2020-09-04 14:01:42,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9020 states. [2020-09-04 14:01:42,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9020 states to 9020 states and 13832 transitions. [2020-09-04 14:01:42,190 INFO L78 Accepts]: Start accepts. Automaton has 9020 states and 13832 transitions. Word has length 326 [2020-09-04 14:01:42,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 14:01:42,190 INFO L479 AbstractCegarLoop]: Abstraction has 9020 states and 13832 transitions. [2020-09-04 14:01:42,190 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-04 14:01:42,191 INFO L276 IsEmpty]: Start isEmpty. Operand 9020 states and 13832 transitions. [2020-09-04 14:01:42,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2020-09-04 14:01:42,210 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 14:01:42,210 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] [2020-09-04 14:01:42,211 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-04 14:01:42,211 INFO L427 AbstractCegarLoop]: === Iteration 6 === [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]=== [2020-09-04 14:01:42,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 14:01:42,211 INFO L82 PathProgramCache]: Analyzing trace with hash -1229480868, now seen corresponding path program 1 times [2020-09-04 14:01:42,212 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 14:01:42,212 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142865573] [2020-09-04 14:01:42,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 14:01:42,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 14:01:43,236 WARN L193 SmtUtils]: Spent 823.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-09-04 14:01:43,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 14:01:43,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 14:01:43,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 14:01:43,356 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142865573] [2020-09-04 14:01:43,357 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 14:01:43,357 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-04 14:01:43,357 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682225118] [2020-09-04 14:01:43,358 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-04 14:01:43,358 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 14:01:43,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-04 14:01:43,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 14:01:43,359 INFO L87 Difference]: Start difference. First operand 9020 states and 13832 transitions. Second operand 4 states. [2020-09-04 14:01:56,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 14:01:56,051 INFO L93 Difference]: Finished difference Result 26947 states and 41309 transitions. [2020-09-04 14:01:56,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-04 14:01:56,052 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 327 [2020-09-04 14:01:56,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 14:01:56,090 INFO L225 Difference]: With dead ends: 26947 [2020-09-04 14:01:56,090 INFO L226 Difference]: Without dead ends: 17987 [2020-09-04 14:01:56,108 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 14:01:56,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17987 states. [2020-09-04 14:01:56,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17987 to 9038. [2020-09-04 14:01:56,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9038 states. [2020-09-04 14:01:56,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9038 states to 9038 states and 13853 transitions. [2020-09-04 14:01:56,625 INFO L78 Accepts]: Start accepts. Automaton has 9038 states and 13853 transitions. Word has length 327 [2020-09-04 14:01:56,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 14:01:56,626 INFO L479 AbstractCegarLoop]: Abstraction has 9038 states and 13853 transitions. [2020-09-04 14:01:56,626 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-04 14:01:56,626 INFO L276 IsEmpty]: Start isEmpty. Operand 9038 states and 13853 transitions. [2020-09-04 14:01:56,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2020-09-04 14:01:56,645 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 14:01:56,645 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] [2020-09-04 14:01:56,646 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-04 14:01:56,646 INFO L427 AbstractCegarLoop]: === Iteration 7 === [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]=== [2020-09-04 14:01:56,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 14:01:56,647 INFO L82 PathProgramCache]: Analyzing trace with hash 588846425, now seen corresponding path program 1 times [2020-09-04 14:01:56,647 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 14:01:56,647 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878816249] [2020-09-04 14:01:56,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 14:01:56,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 14:01:57,796 WARN L193 SmtUtils]: Spent 780.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-09-04 14:01:57,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 14:01:57,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 14:01:58,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 14:01:58,028 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878816249] [2020-09-04 14:01:58,028 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 14:01:58,028 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-04 14:01:58,029 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49318063] [2020-09-04 14:01:58,030 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-04 14:01:58,030 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 14:01:58,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-04 14:01:58,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 14:01:58,031 INFO L87 Difference]: Start difference. First operand 9038 states and 13853 transitions. Second operand 4 states. [2020-09-04 14:02:10,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 14:02:10,755 INFO L93 Difference]: Finished difference Result 25493 states and 38963 transitions. [2020-09-04 14:02:10,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-04 14:02:10,756 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 328 [2020-09-04 14:02:10,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 14:02:10,788 INFO L225 Difference]: With dead ends: 25493 [2020-09-04 14:02:10,788 INFO L226 Difference]: Without dead ends: 16700 [2020-09-04 14:02:10,805 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 14:02:10,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16700 states. [2020-09-04 14:02:11,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16700 to 16576. [2020-09-04 14:02:11,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16576 states. [2020-09-04 14:02:11,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16576 states to 16576 states and 25242 transitions. [2020-09-04 14:02:11,342 INFO L78 Accepts]: Start accepts. Automaton has 16576 states and 25242 transitions. Word has length 328 [2020-09-04 14:02:11,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 14:02:11,342 INFO L479 AbstractCegarLoop]: Abstraction has 16576 states and 25242 transitions. [2020-09-04 14:02:11,342 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-04 14:02:11,342 INFO L276 IsEmpty]: Start isEmpty. Operand 16576 states and 25242 transitions. [2020-09-04 14:02:11,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2020-09-04 14:02:11,375 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 14:02:11,375 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] [2020-09-04 14:02:11,375 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-04 14:02:11,376 INFO L427 AbstractCegarLoop]: === Iteration 8 === [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]=== [2020-09-04 14:02:11,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 14:02:11,376 INFO L82 PathProgramCache]: Analyzing trace with hash -1900100554, now seen corresponding path program 1 times [2020-09-04 14:02:11,376 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 14:02:11,377 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169951091] [2020-09-04 14:02:11,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 14:02:11,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 14:02:12,644 WARN L193 SmtUtils]: Spent 743.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-09-04 14:02:12,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 14:02:12,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 14:02:12,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 14:02:12,854 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169951091] [2020-09-04 14:02:12,854 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 14:02:12,854 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-04 14:02:12,855 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589283334] [2020-09-04 14:02:12,855 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-04 14:02:12,855 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 14:02:12,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-04 14:02:12,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-04 14:02:12,860 INFO L87 Difference]: Start difference. First operand 16576 states and 25242 transitions. Second operand 5 states. [2020-09-04 14:02:21,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 14:02:21,730 INFO L93 Difference]: Finished difference Result 34651 states and 52717 transitions. [2020-09-04 14:02:21,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-04 14:02:21,731 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 328 [2020-09-04 14:02:21,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 14:02:21,759 INFO L225 Difference]: With dead ends: 34651 [2020-09-04 14:02:21,759 INFO L226 Difference]: Without dead ends: 17567 [2020-09-04 14:02:21,787 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-04 14:02:21,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17567 states. [2020-09-04 14:02:22,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17567 to 17443. [2020-09-04 14:02:22,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17443 states. [2020-09-04 14:02:22,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17443 states to 17443 states and 26456 transitions. [2020-09-04 14:02:22,397 INFO L78 Accepts]: Start accepts. Automaton has 17443 states and 26456 transitions. Word has length 328 [2020-09-04 14:02:22,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 14:02:22,397 INFO L479 AbstractCegarLoop]: Abstraction has 17443 states and 26456 transitions. [2020-09-04 14:02:22,397 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-04 14:02:22,398 INFO L276 IsEmpty]: Start isEmpty. Operand 17443 states and 26456 transitions. [2020-09-04 14:02:22,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2020-09-04 14:02:22,421 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 14:02:22,422 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] [2020-09-04 14:02:22,422 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-04 14:02:22,422 INFO L427 AbstractCegarLoop]: === Iteration 9 === [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]=== [2020-09-04 14:02:22,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 14:02:22,423 INFO L82 PathProgramCache]: Analyzing trace with hash 2122622970, now seen corresponding path program 1 times [2020-09-04 14:02:22,423 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 14:02:22,423 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26349954] [2020-09-04 14:02:22,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 14:02:22,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 14:02:23,449 WARN L193 SmtUtils]: Spent 867.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-09-04 14:02:23,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 14:02:23,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 14:02:23,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 14:02:23,563 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26349954] [2020-09-04 14:02:23,564 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 14:02:23,564 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-04 14:02:23,564 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251865967] [2020-09-04 14:02:23,565 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-04 14:02:23,565 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 14:02:23,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-04 14:02:23,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 14:02:23,568 INFO L87 Difference]: Start difference. First operand 17443 states and 26456 transitions. Second operand 4 states. [2020-09-04 14:02:31,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 14:02:31,421 INFO L93 Difference]: Finished difference Result 51457 states and 77891 transitions. [2020-09-04 14:02:31,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-04 14:02:31,422 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 330 [2020-09-04 14:02:31,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 14:02:31,472 INFO L225 Difference]: With dead ends: 51457 [2020-09-04 14:02:31,472 INFO L226 Difference]: Without dead ends: 34467 [2020-09-04 14:02:31,502 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 14:02:31,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34467 states. [2020-09-04 14:02:32,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34467 to 17501. [2020-09-04 14:02:32,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17501 states. [2020-09-04 14:02:32,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17501 states to 17501 states and 26531 transitions. [2020-09-04 14:02:32,402 INFO L78 Accepts]: Start accepts. Automaton has 17501 states and 26531 transitions. Word has length 330 [2020-09-04 14:02:32,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 14:02:32,402 INFO L479 AbstractCegarLoop]: Abstraction has 17501 states and 26531 transitions. [2020-09-04 14:02:32,402 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-04 14:02:32,402 INFO L276 IsEmpty]: Start isEmpty. Operand 17501 states and 26531 transitions. [2020-09-04 14:02:32,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2020-09-04 14:02:32,420 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 14:02:32,420 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] [2020-09-04 14:02:32,421 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-04 14:02:32,421 INFO L427 AbstractCegarLoop]: === Iteration 10 === [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]=== [2020-09-04 14:02:32,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 14:02:32,421 INFO L82 PathProgramCache]: Analyzing trace with hash 1502657294, now seen corresponding path program 1 times [2020-09-04 14:02:32,422 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 14:02:32,422 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928943133] [2020-09-04 14:02:32,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 14:02:32,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 14:02:33,491 WARN L193 SmtUtils]: Spent 761.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-09-04 14:02:33,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 14:02:33,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 14:02:33,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 14:02:33,622 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928943133] [2020-09-04 14:02:33,622 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 14:02:33,622 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-04 14:02:33,623 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428879196] [2020-09-04 14:02:33,623 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-04 14:02:33,623 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 14:02:33,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-04 14:02:33,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 14:02:33,624 INFO L87 Difference]: Start difference. First operand 17501 states and 26531 transitions. Second operand 4 states. [2020-09-04 14:02:47,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 14:02:47,973 INFO L93 Difference]: Finished difference Result 51472 states and 77870 transitions. [2020-09-04 14:02:47,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-04 14:02:47,974 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 330 [2020-09-04 14:02:47,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 14:02:48,007 INFO L225 Difference]: With dead ends: 51472 [2020-09-04 14:02:48,007 INFO L226 Difference]: Without dead ends: 34256 [2020-09-04 14:02:48,023 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 14:02:48,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34256 states. [2020-09-04 14:02:50,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34256 to 34154. [2020-09-04 14:02:50,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34154 states. [2020-09-04 14:02:50,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34154 states to 34154 states and 51428 transitions. [2020-09-04 14:02:50,374 INFO L78 Accepts]: Start accepts. Automaton has 34154 states and 51428 transitions. Word has length 330 [2020-09-04 14:02:50,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 14:02:50,375 INFO L479 AbstractCegarLoop]: Abstraction has 34154 states and 51428 transitions. [2020-09-04 14:02:50,375 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-04 14:02:50,375 INFO L276 IsEmpty]: Start isEmpty. Operand 34154 states and 51428 transitions. [2020-09-04 14:02:50,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2020-09-04 14:02:50,400 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 14:02:50,401 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] [2020-09-04 14:02:50,401 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-04 14:02:50,401 INFO L427 AbstractCegarLoop]: === Iteration 11 === [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]=== [2020-09-04 14:02:50,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 14:02:50,402 INFO L82 PathProgramCache]: Analyzing trace with hash -1851884245, now seen corresponding path program 1 times [2020-09-04 14:02:50,402 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 14:02:50,402 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136609127] [2020-09-04 14:02:50,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 14:02:50,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 14:02:51,608 WARN L193 SmtUtils]: Spent 728.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-09-04 14:02:51,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 14:02:51,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 14:02:51,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 14:02:51,726 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136609127] [2020-09-04 14:02:51,726 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 14:02:51,726 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-04 14:02:51,726 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619149924] [2020-09-04 14:02:51,727 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-04 14:02:51,727 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 14:02:51,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-04 14:02:51,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-04 14:02:51,728 INFO L87 Difference]: Start difference. First operand 34154 states and 51428 transitions. Second operand 5 states. [2020-09-04 14:03:02,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 14:03:02,213 INFO L93 Difference]: Finished difference Result 72182 states and 108521 transitions. [2020-09-04 14:03:02,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-04 14:03:02,214 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 330 [2020-09-04 14:03:02,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 14:03:02,247 INFO L225 Difference]: With dead ends: 72182 [2020-09-04 14:03:02,247 INFO L226 Difference]: Without dead ends: 36830 [2020-09-04 14:03:02,274 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-04 14:03:02,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36830 states. [2020-09-04 14:03:03,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36830 to 36670. [2020-09-04 14:03:03,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36670 states. [2020-09-04 14:03:03,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36670 states to 36670 states and 54967 transitions. [2020-09-04 14:03:03,816 INFO L78 Accepts]: Start accepts. Automaton has 36670 states and 54967 transitions. Word has length 330 [2020-09-04 14:03:03,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 14:03:03,816 INFO L479 AbstractCegarLoop]: Abstraction has 36670 states and 54967 transitions. [2020-09-04 14:03:03,816 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-04 14:03:03,816 INFO L276 IsEmpty]: Start isEmpty. Operand 36670 states and 54967 transitions. [2020-09-04 14:03:03,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2020-09-04 14:03:03,852 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 14:03:03,852 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] [2020-09-04 14:03:03,853 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-04 14:03:03,853 INFO L427 AbstractCegarLoop]: === Iteration 12 === [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]=== [2020-09-04 14:03:03,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 14:03:03,853 INFO L82 PathProgramCache]: Analyzing trace with hash 786606060, now seen corresponding path program 1 times [2020-09-04 14:03:03,854 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 14:03:03,854 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188137231] [2020-09-04 14:03:03,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 14:03:04,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 14:03:05,056 WARN L193 SmtUtils]: Spent 721.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-09-04 14:03:05,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 14:03:05,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 14:03:05,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 14:03:05,160 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188137231] [2020-09-04 14:03:05,160 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 14:03:05,160 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-04 14:03:05,160 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685347109] [2020-09-04 14:03:05,161 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-04 14:03:05,161 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 14:03:05,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-04 14:03:05,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-04 14:03:05,162 INFO L87 Difference]: Start difference. First operand 36670 states and 54967 transitions. Second operand 5 states. [2020-09-04 14:03:29,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 14:03:29,037 INFO L93 Difference]: Finished difference Result 134685 states and 201016 transitions. [2020-09-04 14:03:29,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-04 14:03:29,038 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 330 [2020-09-04 14:03:29,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 14:03:29,144 INFO L225 Difference]: With dead ends: 134685 [2020-09-04 14:03:29,145 INFO L226 Difference]: Without dead ends: 99995 [2020-09-04 14:03:29,176 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-04 14:03:29,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99995 states. [2020-09-04 14:03:32,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99995 to 37197. [2020-09-04 14:03:32,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37197 states. [2020-09-04 14:03:32,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37197 states to 37197 states and 55727 transitions. [2020-09-04 14:03:32,858 INFO L78 Accepts]: Start accepts. Automaton has 37197 states and 55727 transitions. Word has length 330 [2020-09-04 14:03:32,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 14:03:32,858 INFO L479 AbstractCegarLoop]: Abstraction has 37197 states and 55727 transitions. [2020-09-04 14:03:32,858 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-04 14:03:32,859 INFO L276 IsEmpty]: Start isEmpty. Operand 37197 states and 55727 transitions. [2020-09-04 14:03:32,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2020-09-04 14:03:32,893 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 14:03:32,893 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] [2020-09-04 14:03:32,894 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-04 14:03:32,894 INFO L427 AbstractCegarLoop]: === Iteration 13 === [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]=== [2020-09-04 14:03:32,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 14:03:32,894 INFO L82 PathProgramCache]: Analyzing trace with hash 2005785361, now seen corresponding path program 1 times [2020-09-04 14:03:32,894 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 14:03:32,895 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136705880] [2020-09-04 14:03:32,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 14:03:33,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 14:03:34,091 WARN L193 SmtUtils]: Spent 906.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-09-04 14:03:34,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 14:03:34,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 14:03:34,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 14:03:34,205 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136705880] [2020-09-04 14:03:34,205 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 14:03:34,206 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-04 14:03:34,206 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636005878] [2020-09-04 14:03:34,206 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-04 14:03:34,206 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 14:03:34,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-04 14:03:34,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 14:03:34,207 INFO L87 Difference]: Start difference. First operand 37197 states and 55727 transitions. Second operand 4 states. [2020-09-04 14:03:45,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 14:03:45,936 INFO L93 Difference]: Finished difference Result 84871 states and 128097 transitions. [2020-09-04 14:03:45,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-04 14:03:45,937 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 330 [2020-09-04 14:03:45,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 14:03:46,002 INFO L225 Difference]: With dead ends: 84871 [2020-09-04 14:03:46,002 INFO L226 Difference]: Without dead ends: 54555 [2020-09-04 14:03:46,032 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 14:03:46,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54555 states. [2020-09-04 14:03:48,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54555 to 44673. [2020-09-04 14:03:48,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44673 states. [2020-09-04 14:03:48,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44673 states to 44673 states and 67779 transitions. [2020-09-04 14:03:48,202 INFO L78 Accepts]: Start accepts. Automaton has 44673 states and 67779 transitions. Word has length 330 [2020-09-04 14:03:48,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 14:03:48,202 INFO L479 AbstractCegarLoop]: Abstraction has 44673 states and 67779 transitions. [2020-09-04 14:03:48,203 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-04 14:03:48,203 INFO L276 IsEmpty]: Start isEmpty. Operand 44673 states and 67779 transitions. [2020-09-04 14:03:48,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2020-09-04 14:03:48,239 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 14:03:48,240 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] [2020-09-04 14:03:48,240 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-04 14:03:48,240 INFO L427 AbstractCegarLoop]: === Iteration 14 === [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]=== [2020-09-04 14:03:48,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 14:03:48,241 INFO L82 PathProgramCache]: Analyzing trace with hash 488749142, now seen corresponding path program 1 times [2020-09-04 14:03:48,241 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 14:03:48,241 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076346228] [2020-09-04 14:03:48,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 14:03:48,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 14:03:49,270 WARN L193 SmtUtils]: Spent 794.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-09-04 14:03:49,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 14:03:49,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 14:03:49,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 14:03:49,610 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076346228] [2020-09-04 14:03:49,610 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 14:03:49,611 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-04 14:03:49,611 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996273183] [2020-09-04 14:03:49,611 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-04 14:03:49,612 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 14:03:49,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-04 14:03:49,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 14:03:49,612 INFO L87 Difference]: Start difference. First operand 44673 states and 67779 transitions. Second operand 4 states. [2020-09-04 14:04:02,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 14:04:02,937 INFO L93 Difference]: Finished difference Result 103045 states and 157431 transitions. [2020-09-04 14:04:02,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-04 14:04:02,938 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 332 [2020-09-04 14:04:02,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 14:04:03,012 INFO L225 Difference]: With dead ends: 103045 [2020-09-04 14:04:03,012 INFO L226 Difference]: Without dead ends: 66657 [2020-09-04 14:04:03,049 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 14:04:03,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66657 states. [2020-09-04 14:04:05,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66657 to 58045. [2020-09-04 14:04:05,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58045 states. [2020-09-04 14:04:05,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58045 states to 58045 states and 89347 transitions. [2020-09-04 14:04:05,900 INFO L78 Accepts]: Start accepts. Automaton has 58045 states and 89347 transitions. Word has length 332 [2020-09-04 14:04:05,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 14:04:05,900 INFO L479 AbstractCegarLoop]: Abstraction has 58045 states and 89347 transitions. [2020-09-04 14:04:05,900 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-04 14:04:05,900 INFO L276 IsEmpty]: Start isEmpty. Operand 58045 states and 89347 transitions. [2020-09-04 14:04:05,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2020-09-04 14:04:05,925 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 14:04:05,925 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] [2020-09-04 14:04:05,925 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-04 14:04:05,925 INFO L427 AbstractCegarLoop]: === Iteration 15 === [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]=== [2020-09-04 14:04:05,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 14:04:05,926 INFO L82 PathProgramCache]: Analyzing trace with hash -1851970655, now seen corresponding path program 1 times [2020-09-04 14:04:05,926 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 14:04:05,926 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245226710] [2020-09-04 14:04:05,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 14:04:05,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 14:04:07,131 WARN L193 SmtUtils]: Spent 1.04 s on a formula simplification that was a NOOP. DAG size: 322 [2020-09-04 14:04:07,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 14:04:07,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 14:04:07,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 14:04:07,206 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245226710] [2020-09-04 14:04:07,206 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 14:04:07,206 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-04 14:04:07,206 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707152381] [2020-09-04 14:04:07,207 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-04 14:04:07,207 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 14:04:07,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-04 14:04:07,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 14:04:07,208 INFO L87 Difference]: Start difference. First operand 58045 states and 89347 transitions. Second operand 4 states. [2020-09-04 14:04:27,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 14:04:27,242 INFO L93 Difference]: Finished difference Result 168185 states and 258461 transitions. [2020-09-04 14:04:27,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-04 14:04:27,243 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 332 [2020-09-04 14:04:27,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 14:04:27,388 INFO L225 Difference]: With dead ends: 168185 [2020-09-04 14:04:27,388 INFO L226 Difference]: Without dead ends: 112863 [2020-09-04 14:04:27,444 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 14:04:27,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112863 states. [2020-09-04 14:04:31,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112863 to 58313. [2020-09-04 14:04:31,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58313 states. [2020-09-04 14:04:31,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58313 states to 58313 states and 89707 transitions. [2020-09-04 14:04:31,168 INFO L78 Accepts]: Start accepts. Automaton has 58313 states and 89707 transitions. Word has length 332 [2020-09-04 14:04:31,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 14:04:31,169 INFO L479 AbstractCegarLoop]: Abstraction has 58313 states and 89707 transitions. [2020-09-04 14:04:31,169 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-04 14:04:31,169 INFO L276 IsEmpty]: Start isEmpty. Operand 58313 states and 89707 transitions. [2020-09-04 14:04:31,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2020-09-04 14:04:31,196 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 14:04:31,196 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] [2020-09-04 14:04:31,196 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-09-04 14:04:31,197 INFO L427 AbstractCegarLoop]: === Iteration 16 === [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]=== [2020-09-04 14:04:31,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 14:04:31,197 INFO L82 PathProgramCache]: Analyzing trace with hash -998110810, now seen corresponding path program 1 times [2020-09-04 14:04:31,197 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 14:04:31,197 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240142482] [2020-09-04 14:04:31,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 14:04:31,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 14:04:32,152 WARN L193 SmtUtils]: Spent 776.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-09-04 14:04:32,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 14:04:32,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 14:04:32,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 14:04:32,237 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240142482] [2020-09-04 14:04:32,237 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 14:04:32,238 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-04 14:04:32,238 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226571126] [2020-09-04 14:04:32,239 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-04 14:04:32,239 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 14:04:32,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-04 14:04:32,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 14:04:32,239 INFO L87 Difference]: Start difference. First operand 58313 states and 89707 transitions. Second operand 4 states. [2020-09-04 14:04:53,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 14:04:53,003 INFO L93 Difference]: Finished difference Result 168365 states and 258593 transitions. [2020-09-04 14:04:53,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-04 14:04:53,004 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 333 [2020-09-04 14:04:53,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 14:04:53,130 INFO L225 Difference]: With dead ends: 168365 [2020-09-04 14:04:53,130 INFO L226 Difference]: Without dead ends: 113063 [2020-09-04 14:04:53,173 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 14:04:53,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113063 states. [2020-09-04 14:04:56,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113063 to 58545. [2020-09-04 14:04:56,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58545 states. [2020-09-04 14:04:56,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58545 states to 58545 states and 89933 transitions. [2020-09-04 14:04:56,876 INFO L78 Accepts]: Start accepts. Automaton has 58545 states and 89933 transitions. Word has length 333 [2020-09-04 14:04:56,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 14:04:56,876 INFO L479 AbstractCegarLoop]: Abstraction has 58545 states and 89933 transitions. [2020-09-04 14:04:56,876 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-04 14:04:56,877 INFO L276 IsEmpty]: Start isEmpty. Operand 58545 states and 89933 transitions. [2020-09-04 14:04:56,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2020-09-04 14:04:56,901 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 14:04:56,901 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] [2020-09-04 14:04:56,901 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-09-04 14:04:56,901 INFO L427 AbstractCegarLoop]: === Iteration 17 === [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]=== [2020-09-04 14:04:56,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 14:04:56,902 INFO L82 PathProgramCache]: Analyzing trace with hash 174227197, now seen corresponding path program 1 times [2020-09-04 14:04:56,902 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 14:04:56,902 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687888908] [2020-09-04 14:04:56,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 14:04:56,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 14:04:58,024 WARN L193 SmtUtils]: Spent 838.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-09-04 14:04:58,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 14:04:58,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 14:04:58,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 14:04:58,145 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687888908] [2020-09-04 14:04:58,145 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 14:04:58,145 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-04 14:04:58,145 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902290846] [2020-09-04 14:04:58,146 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-04 14:04:58,146 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 14:04:58,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-04 14:04:58,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-04 14:04:58,147 INFO L87 Difference]: Start difference. First operand 58545 states and 89933 transitions. Second operand 6 states. [2020-09-04 14:04:59,109 WARN L193 SmtUtils]: Spent 883.00 ms on a formula simplification that was a NOOP. DAG size: 328 [2020-09-04 14:05:11,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 14:05:11,964 INFO L93 Difference]: Finished difference Result 109781 states and 169028 transitions. [2020-09-04 14:05:11,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-04 14:05:11,965 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 333 [2020-09-04 14:05:11,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 14:05:12,032 INFO L225 Difference]: With dead ends: 109781 [2020-09-04 14:05:12,033 INFO L226 Difference]: Without dead ends: 58545 [2020-09-04 14:05:12,070 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-09-04 14:05:12,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58545 states. [2020-09-04 14:05:15,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58545 to 58545. [2020-09-04 14:05:15,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58545 states. [2020-09-04 14:05:15,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58545 states to 58545 states and 89235 transitions. [2020-09-04 14:05:15,641 INFO L78 Accepts]: Start accepts. Automaton has 58545 states and 89235 transitions. Word has length 333 [2020-09-04 14:05:15,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 14:05:15,642 INFO L479 AbstractCegarLoop]: Abstraction has 58545 states and 89235 transitions. [2020-09-04 14:05:15,642 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-04 14:05:15,642 INFO L276 IsEmpty]: Start isEmpty. Operand 58545 states and 89235 transitions. [2020-09-04 14:05:15,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2020-09-04 14:05:15,668 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 14:05:15,669 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] [2020-09-04 14:05:15,669 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-09-04 14:05:15,669 INFO L427 AbstractCegarLoop]: === Iteration 18 === [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]=== [2020-09-04 14:05:15,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 14:05:15,669 INFO L82 PathProgramCache]: Analyzing trace with hash 517892770, now seen corresponding path program 1 times [2020-09-04 14:05:15,670 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 14:05:15,670 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618216792] [2020-09-04 14:05:15,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 14:05:15,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 14:05:17,314 WARN L193 SmtUtils]: Spent 1.07 s on a formula simplification that was a NOOP. DAG size: 322 [2020-09-04 14:05:17,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 14:05:17,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 14:05:17,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 14:05:17,480 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618216792] [2020-09-04 14:05:17,480 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 14:05:17,480 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-04 14:05:17,480 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255201333] [2020-09-04 14:05:17,481 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-04 14:05:17,481 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 14:05:17,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-04 14:05:17,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-09-04 14:05:17,482 INFO L87 Difference]: Start difference. First operand 58545 states and 89235 transitions. Second operand 10 states. [2020-09-04 14:05:18,473 WARN L193 SmtUtils]: Spent 883.00 ms on a formula simplification that was a NOOP. DAG size: 328 [2020-09-04 14:05:42,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 14:05:42,206 INFO L93 Difference]: Finished difference Result 190783 states and 295585 transitions. [2020-09-04 14:05:42,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-04 14:05:42,207 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 333 [2020-09-04 14:05:42,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 14:05:42,388 INFO L225 Difference]: With dead ends: 190783 [2020-09-04 14:05:42,388 INFO L226 Difference]: Without dead ends: 140195 [2020-09-04 14:05:42,436 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=131, Invalid=289, Unknown=0, NotChecked=0, Total=420 [2020-09-04 14:05:42,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140195 states. [2020-09-04 14:05:52,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140195 to 103263. [2020-09-04 14:05:52,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103263 states. [2020-09-04 14:05:52,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103263 states to 103263 states and 158123 transitions. [2020-09-04 14:05:52,656 INFO L78 Accepts]: Start accepts. Automaton has 103263 states and 158123 transitions. Word has length 333 [2020-09-04 14:05:52,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 14:05:52,657 INFO L479 AbstractCegarLoop]: Abstraction has 103263 states and 158123 transitions. [2020-09-04 14:05:52,657 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-04 14:05:52,657 INFO L276 IsEmpty]: Start isEmpty. Operand 103263 states and 158123 transitions. [2020-09-04 14:05:52,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2020-09-04 14:05:52,690 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 14:05:52,690 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] [2020-09-04 14:05:52,690 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-09-04 14:05:52,691 INFO L427 AbstractCegarLoop]: === Iteration 19 === [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]=== [2020-09-04 14:05:52,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 14:05:52,691 INFO L82 PathProgramCache]: Analyzing trace with hash 72101730, now seen corresponding path program 1 times [2020-09-04 14:05:52,691 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 14:05:52,691 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633643187] [2020-09-04 14:05:52,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 14:05:52,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 14:05:53,943 WARN L193 SmtUtils]: Spent 828.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-09-04 14:05:53,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 14:05:53,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 14:05:54,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 14:05:54,070 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633643187] [2020-09-04 14:05:54,070 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 14:05:54,070 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-04 14:05:54,071 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327139231] [2020-09-04 14:05:54,071 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-04 14:05:54,071 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 14:05:54,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-04 14:05:54,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-04 14:05:54,072 INFO L87 Difference]: Start difference. First operand 103263 states and 158123 transitions. Second operand 5 states. [2020-09-04 14:06:22,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 14:06:22,926 INFO L93 Difference]: Finished difference Result 303443 states and 464818 transitions. [2020-09-04 14:06:22,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-04 14:06:22,927 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 333 [2020-09-04 14:06:22,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 14:06:23,216 INFO L225 Difference]: With dead ends: 303443 [2020-09-04 14:06:23,216 INFO L226 Difference]: Without dead ends: 200966 [2020-09-04 14:06:23,322 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-04 14:06:23,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200966 states. [2020-09-04 14:06:41,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200966 to 200850. [2020-09-04 14:06:41,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200850 states. [2020-09-04 14:06:41,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200850 states to 200850 states and 306351 transitions. [2020-09-04 14:06:41,549 INFO L78 Accepts]: Start accepts. Automaton has 200850 states and 306351 transitions. Word has length 333 [2020-09-04 14:06:41,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 14:06:41,549 INFO L479 AbstractCegarLoop]: Abstraction has 200850 states and 306351 transitions. [2020-09-04 14:06:41,549 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-04 14:06:41,549 INFO L276 IsEmpty]: Start isEmpty. Operand 200850 states and 306351 transitions. [2020-09-04 14:06:41,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2020-09-04 14:06:41,607 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 14:06:41,608 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] [2020-09-04 14:06:41,608 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-09-04 14:06:41,608 INFO L427 AbstractCegarLoop]: === Iteration 20 === [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]=== [2020-09-04 14:06:41,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 14:06:41,609 INFO L82 PathProgramCache]: Analyzing trace with hash 790630548, now seen corresponding path program 1 times [2020-09-04 14:06:41,609 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 14:06:41,609 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318731725] [2020-09-04 14:06:41,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 14:06:41,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 14:06:42,927 WARN L193 SmtUtils]: Spent 875.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-09-04 14:06:42,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 14:06:42,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 14:06:43,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 14:06:43,009 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318731725] [2020-09-04 14:06:43,009 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 14:06:43,009 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-04 14:06:43,009 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121587423] [2020-09-04 14:06:43,010 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-04 14:06:43,010 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 14:06:43,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-04 14:06:43,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-04 14:06:43,010 INFO L87 Difference]: Start difference. First operand 200850 states and 306351 transitions. Second operand 5 states. [2020-09-04 14:07:14,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 14:07:14,984 INFO L93 Difference]: Finished difference Result 289033 states and 440404 transitions. [2020-09-04 14:07:14,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-04 14:07:14,986 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 334 [2020-09-04 14:07:14,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 14:07:15,262 INFO L225 Difference]: With dead ends: 289033 [2020-09-04 14:07:15,262 INFO L226 Difference]: Without dead ends: 201026 [2020-09-04 14:07:15,345 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-04 14:07:15,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201026 states. [2020-09-04 14:07:35,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201026 to 196698. [2020-09-04 14:07:35,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196698 states. [2020-09-04 14:07:35,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196698 states to 196698 states and 300446 transitions. [2020-09-04 14:07:35,499 INFO L78 Accepts]: Start accepts. Automaton has 196698 states and 300446 transitions. Word has length 334 [2020-09-04 14:07:35,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 14:07:35,500 INFO L479 AbstractCegarLoop]: Abstraction has 196698 states and 300446 transitions. [2020-09-04 14:07:35,500 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-04 14:07:35,500 INFO L276 IsEmpty]: Start isEmpty. Operand 196698 states and 300446 transitions. [2020-09-04 14:07:35,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2020-09-04 14:07:35,553 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 14:07:35,553 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] [2020-09-04 14:07:35,554 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-09-04 14:07:35,554 INFO L427 AbstractCegarLoop]: === Iteration 21 === [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]=== [2020-09-04 14:07:35,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 14:07:35,554 INFO L82 PathProgramCache]: Analyzing trace with hash -1635709975, now seen corresponding path program 1 times [2020-09-04 14:07:35,554 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 14:07:35,554 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93226376] [2020-09-04 14:07:35,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 14:07:35,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 14:07:36,525 WARN L193 SmtUtils]: Spent 830.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-09-04 14:07:36,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 14:07:36,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 14:07:36,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 14:07:36,618 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93226376] [2020-09-04 14:07:36,618 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 14:07:36,618 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-04 14:07:36,618 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516799502] [2020-09-04 14:07:36,619 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-04 14:07:36,619 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 14:07:36,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-04 14:07:36,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 14:07:36,620 INFO L87 Difference]: Start difference. First operand 196698 states and 300446 transitions. Second operand 4 states. [2020-09-04 14:08:28,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 14:08:28,473 INFO L93 Difference]: Finished difference Result 586200 states and 895170 transitions. [2020-09-04 14:08:28,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-04 14:08:28,474 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 337 [2020-09-04 14:08:28,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 14:08:29,029 INFO L225 Difference]: With dead ends: 586200 [2020-09-04 14:08:29,029 INFO L226 Difference]: Without dead ends: 391116 [2020-09-04 14:08:29,189 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 14:08:29,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391116 states. [2020-09-04 14:08:51,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391116 to 197042. [2020-09-04 14:08:51,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197042 states. [2020-09-04 14:08:51,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197042 states to 197042 states and 300814 transitions. [2020-09-04 14:08:51,985 INFO L78 Accepts]: Start accepts. Automaton has 197042 states and 300814 transitions. Word has length 337 [2020-09-04 14:08:51,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 14:08:51,985 INFO L479 AbstractCegarLoop]: Abstraction has 197042 states and 300814 transitions. [2020-09-04 14:08:51,985 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-04 14:08:51,985 INFO L276 IsEmpty]: Start isEmpty. Operand 197042 states and 300814 transitions. [2020-09-04 14:08:52,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2020-09-04 14:08:52,038 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 14:08:52,039 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] [2020-09-04 14:08:52,039 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-09-04 14:08:52,039 INFO L427 AbstractCegarLoop]: === Iteration 22 === [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]=== [2020-09-04 14:08:52,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 14:08:52,040 INFO L82 PathProgramCache]: Analyzing trace with hash -887460974, now seen corresponding path program 1 times [2020-09-04 14:08:52,040 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 14:08:52,040 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456606411] [2020-09-04 14:08:52,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 14:08:52,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 14:08:53,137 WARN L193 SmtUtils]: Spent 827.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-09-04 14:08:53,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 14:08:53,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 14:08:53,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 14:08:53,252 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456606411] [2020-09-04 14:08:53,252 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 14:08:53,252 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-04 14:08:53,252 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000360309] [2020-09-04 14:08:53,253 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-04 14:08:53,253 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 14:08:53,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-04 14:08:53,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 14:08:53,253 INFO L87 Difference]: Start difference. First operand 197042 states and 300814 transitions. Second operand 4 states. [2020-09-04 14:09:45,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 14:09:45,748 INFO L93 Difference]: Finished difference Result 548545 states and 836362 transitions. [2020-09-04 14:09:45,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-04 14:09:45,751 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 337 [2020-09-04 14:09:45,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 14:09:46,269 INFO L225 Difference]: With dead ends: 548545 [2020-09-04 14:09:46,269 INFO L226 Difference]: Without dead ends: 356635 [2020-09-04 14:09:46,694 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 14:09:46,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356635 states. [2020-09-04 14:10:23,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356635 to 356527. [2020-09-04 14:10:23,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 356527 states. [2020-09-04 14:10:24,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356527 states to 356527 states and 540856 transitions. [2020-09-04 14:10:24,612 INFO L78 Accepts]: Start accepts. Automaton has 356527 states and 540856 transitions. Word has length 337 [2020-09-04 14:10:24,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 14:10:24,612 INFO L479 AbstractCegarLoop]: Abstraction has 356527 states and 540856 transitions. [2020-09-04 14:10:24,612 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-04 14:10:24,612 INFO L276 IsEmpty]: Start isEmpty. Operand 356527 states and 540856 transitions. [2020-09-04 14:10:24,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2020-09-04 14:10:24,713 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 14:10:24,714 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] [2020-09-04 14:10:24,714 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-09-04 14:10:24,714 INFO L427 AbstractCegarLoop]: === Iteration 23 === [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]=== [2020-09-04 14:10:24,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 14:10:24,714 INFO L82 PathProgramCache]: Analyzing trace with hash 116359141, now seen corresponding path program 1 times [2020-09-04 14:10:24,715 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 14:10:24,715 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970872273] [2020-09-04 14:10:24,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 14:10:24,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 14:10:25,805 WARN L193 SmtUtils]: Spent 843.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-09-04 14:10:25,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 14:10:25,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 14:10:25,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 14:10:25,913 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970872273] [2020-09-04 14:10:25,913 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 14:10:25,913 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-04 14:10:25,913 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24913525] [2020-09-04 14:10:25,914 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-04 14:10:25,914 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 14:10:25,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-04 14:10:25,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 14:10:25,914 INFO L87 Difference]: Start difference. First operand 356527 states and 540856 transitions. Second operand 4 states. [2020-09-04 14:11:56,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 14:11:56,801 INFO L93 Difference]: Finished difference Result 1031598 states and 1563942 transitions. [2020-09-04 14:11:56,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-04 14:11:56,802 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 339 [2020-09-04 14:11:56,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 14:11:57,962 INFO L225 Difference]: With dead ends: 1031598 [2020-09-04 14:11:57,962 INFO L226 Difference]: Without dead ends: 677853 [2020-09-04 14:11:58,293 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 14:11:58,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 677853 states.