/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/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 18:02:32,105 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 18:02:32,109 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 18:02:32,136 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 18:02:32,137 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 18:02:32,139 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 18:02:32,140 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 18:02:32,149 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 18:02:32,153 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 18:02:32,154 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 18:02:32,157 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 18:02:32,159 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 18:02:32,159 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 18:02:32,162 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 18:02:32,163 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 18:02:32,164 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 18:02:32,167 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 18:02:32,168 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 18:02:32,176 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 18:02:32,178 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 18:02:32,182 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 18:02:32,184 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 18:02:32,186 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 18:02:32,186 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 18:02:32,194 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-04 18:02:32,194 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-04 18:02:32,194 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-04 18:02:32,195 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-04 18:02:32,199 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-04 18:02:32,201 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-09-04 18:02:32,207 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 18:02:32,208 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 18:02:32,210 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 18:02:32,211 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-09-04 18:02:32,233 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 18:02:32,233 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 18:02:32,236 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 18:02:32,236 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 18:02:32,236 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 18:02:32,236 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 18:02:32,237 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 18:02:32,237 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 18:02:32,237 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 18:02:32,237 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 18:02:32,238 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 18:02:32,239 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 18:02:32,239 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 18:02:32,239 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 18:02:32,240 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 18:02:32,240 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 18:02:32,240 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 18:02:32,240 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 18:02:32,240 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 18:02:32,241 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 18:02:32,241 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 18:02:32,241 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 18:02:32,241 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-09-04 18:02:32,685 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 18:02:32,700 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 18:02:32,705 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 18:02:32,707 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 18:02:32,708 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 18:02:32,709 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2020-09-04 18:02:32,790 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/804610413/6381d62c513f4c1ea96171f1445deffa/FLAGded8401db [2020-09-04 18:02:33,407 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 18:02:33,412 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2020-09-04 18:02:33,440 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/804610413/6381d62c513f4c1ea96171f1445deffa/FLAGded8401db [2020-09-04 18:02:33,661 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/804610413/6381d62c513f4c1ea96171f1445deffa [2020-09-04 18:02:33,676 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 18:02:33,679 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 18:02:33,680 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 18:02:33,680 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 18:02:33,684 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 18:02:33,685 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 06:02:33" (1/1) ... [2020-09-04 18:02:33,690 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b2f3aa8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 06:02:33, skipping insertion in model container [2020-09-04 18:02:33,690 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 06:02:33" (1/1) ... [2020-09-04 18:02:33,699 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 18:02:33,778 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 18:02:34,429 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 18:02:34,443 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 18:02:34,924 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 18:02:34,944 INFO L208 MainTranslator]: Completed translation [2020-09-04 18:02:34,945 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 06:02:34 WrapperNode [2020-09-04 18:02:34,945 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 18:02:34,946 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 18:02:34,946 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 18:02:34,946 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 18:02:34,961 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 06:02:34" (1/1) ... [2020-09-04 18:02:34,962 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 06:02:34" (1/1) ... [2020-09-04 18:02:34,981 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 06:02:34" (1/1) ... [2020-09-04 18:02:34,982 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 06:02:34" (1/1) ... [2020-09-04 18:02:35,010 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 06:02:34" (1/1) ... [2020-09-04 18:02:35,033 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 06:02:34" (1/1) ... [2020-09-04 18:02:35,038 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 06:02:34" (1/1) ... [2020-09-04 18:02:35,046 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 18:02:35,047 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 18:02:35,047 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 18:02:35,047 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 18:02:35,049 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 06:02:34" (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 18:02:35,151 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 18:02:35,152 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 18:02:35,152 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-04 18:02:35,152 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 18:02:35,152 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 18:02:35,153 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-04 18:02:35,153 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-09-04 18:02:35,153 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-09-04 18:02:35,153 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-04 18:02:35,154 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-04 18:02:35,154 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-09-04 18:02:35,155 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-09-04 18:02:35,155 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-09-04 18:02:35,155 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-09-04 18:02:35,155 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-09-04 18:02:35,156 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-09-04 18:02:35,156 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-09-04 18:02:35,156 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 18:02:35,157 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 18:02:35,157 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 18:02:36,889 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 18:02:36,889 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-04 18:02:36,901 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 06:02:36 BoogieIcfgContainer [2020-09-04 18:02:36,902 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 18:02:36,903 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 18:02:36,903 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 18:02:36,907 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 18:02:36,908 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 06:02:33" (1/3) ... [2020-09-04 18:02:36,909 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52ab5c53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 06:02:36, skipping insertion in model container [2020-09-04 18:02:36,909 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 06:02:34" (2/3) ... [2020-09-04 18:02:36,909 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52ab5c53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 06:02:36, skipping insertion in model container [2020-09-04 18:02:36,909 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 06:02:36" (3/3) ... [2020-09-04 18:02:36,912 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2020-09-04 18:02:36,923 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 18:02:36,934 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 18:02:36,957 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 18:02:36,985 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 18:02:36,986 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 18:02:36,986 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-09-04 18:02:36,986 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 18:02:36,986 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 18:02:36,987 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 18:02:36,987 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 18:02:36,987 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 18:02:37,020 INFO L276 IsEmpty]: Start isEmpty. Operand 912 states. [2020-09-04 18:02:37,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 461 [2020-09-04 18:02:37,065 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 18:02:37,067 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 18:02:37,068 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 18:02:37,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 18:02:37,076 INFO L82 PathProgramCache]: Analyzing trace with hash 752602954, now seen corresponding path program 1 times [2020-09-04 18:02:37,089 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 18:02:37,089 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1134285320] [2020-09-04 18:02:37,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 18:02:37,172 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 18:02:37,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:02:38,288 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-09-04 18:02:38,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 18:02:38,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:02:38,608 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 18:02:38,611 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1134285320] [2020-09-04 18:02:38,613 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 18:02:38,614 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-04 18:02:38,614 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363404544] [2020-09-04 18:02:38,622 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-04 18:02:38,623 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 18:02:38,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-04 18:02:38,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 18:02:38,653 INFO L87 Difference]: Start difference. First operand 912 states. Second operand 4 states. [2020-09-04 18:02:42,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 18:02:42,476 INFO L93 Difference]: Finished difference Result 1664 states and 2163 transitions. [2020-09-04 18:02:42,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-04 18:02:42,479 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 460 [2020-09-04 18:02:42,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 18:02:42,512 INFO L225 Difference]: With dead ends: 1664 [2020-09-04 18:02:42,513 INFO L226 Difference]: Without dead ends: 1251 [2020-09-04 18:02:42,521 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 18:02:42,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1251 states. [2020-09-04 18:02:42,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1251 to 1244. [2020-09-04 18:02:42,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1244 states. [2020-09-04 18:02:42,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1244 states to 1244 states and 1517 transitions. [2020-09-04 18:02:42,724 INFO L78 Accepts]: Start accepts. Automaton has 1244 states and 1517 transitions. Word has length 460 [2020-09-04 18:02:42,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 18:02:42,727 INFO L479 AbstractCegarLoop]: Abstraction has 1244 states and 1517 transitions. [2020-09-04 18:02:42,727 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-04 18:02:42,727 INFO L276 IsEmpty]: Start isEmpty. Operand 1244 states and 1517 transitions. [2020-09-04 18:02:42,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 461 [2020-09-04 18:02:42,743 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 18:02:42,744 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 18:02:42,744 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 18:02:42,744 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 18:02:42,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 18:02:42,745 INFO L82 PathProgramCache]: Analyzing trace with hash 1495383786, now seen corresponding path program 1 times [2020-09-04 18:02:42,746 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 18:02:42,746 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1602950216] [2020-09-04 18:02:42,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 18:02:42,757 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 18:02:42,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:02:43,390 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-09-04 18:02:43,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 18:02:43,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:02:43,591 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 18:02:43,592 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1602950216] [2020-09-04 18:02:43,592 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 18:02:43,592 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-04 18:02:43,592 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233803317] [2020-09-04 18:02:43,594 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-04 18:02:43,594 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 18:02:43,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-04 18:02:43,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 18:02:43,595 INFO L87 Difference]: Start difference. First operand 1244 states and 1517 transitions. Second operand 4 states. [2020-09-04 18:02:46,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 18:02:46,673 INFO L93 Difference]: Finished difference Result 2510 states and 3146 transitions. [2020-09-04 18:02:46,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-04 18:02:46,674 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 460 [2020-09-04 18:02:46,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 18:02:46,692 INFO L225 Difference]: With dead ends: 2510 [2020-09-04 18:02:46,693 INFO L226 Difference]: Without dead ends: 2066 [2020-09-04 18:02:46,705 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 18:02:46,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2066 states. [2020-09-04 18:02:46,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2066 to 2054. [2020-09-04 18:02:46,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2054 states. [2020-09-04 18:02:46,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2054 states to 2054 states and 2545 transitions. [2020-09-04 18:02:46,850 INFO L78 Accepts]: Start accepts. Automaton has 2054 states and 2545 transitions. Word has length 460 [2020-09-04 18:02:46,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 18:02:46,852 INFO L479 AbstractCegarLoop]: Abstraction has 2054 states and 2545 transitions. [2020-09-04 18:02:46,853 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-04 18:02:46,853 INFO L276 IsEmpty]: Start isEmpty. Operand 2054 states and 2545 transitions. [2020-09-04 18:02:46,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 461 [2020-09-04 18:02:46,904 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 18:02:46,905 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 18:02:46,905 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 18:02:46,905 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 18:02:46,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 18:02:46,906 INFO L82 PathProgramCache]: Analyzing trace with hash -863833942, now seen corresponding path program 1 times [2020-09-04 18:02:46,906 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 18:02:46,906 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [402185095] [2020-09-04 18:02:46,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 18:02:46,908 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 18:02:47,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:02:47,643 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-09-04 18:02:47,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 18:02:47,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:02:48,113 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 18:02:48,114 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [402185095] [2020-09-04 18:02:48,115 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 18:02:48,118 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-04 18:02:48,119 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069126860] [2020-09-04 18:02:48,120 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-04 18:02:48,121 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 18:02:48,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-04 18:02:48,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 18:02:48,129 INFO L87 Difference]: Start difference. First operand 2054 states and 2545 transitions. Second operand 4 states. [2020-09-04 18:02:51,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 18:02:51,415 INFO L93 Difference]: Finished difference Result 4382 states and 5559 transitions. [2020-09-04 18:02:51,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-04 18:02:51,416 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 460 [2020-09-04 18:02:51,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 18:02:51,434 INFO L225 Difference]: With dead ends: 4382 [2020-09-04 18:02:51,435 INFO L226 Difference]: Without dead ends: 3596 [2020-09-04 18:02:51,438 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 18:02:51,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3596 states. [2020-09-04 18:02:51,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3596 to 3574. [2020-09-04 18:02:51,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3574 states. [2020-09-04 18:02:51,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3574 states to 3574 states and 4481 transitions. [2020-09-04 18:02:51,576 INFO L78 Accepts]: Start accepts. Automaton has 3574 states and 4481 transitions. Word has length 460 [2020-09-04 18:02:51,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 18:02:51,577 INFO L479 AbstractCegarLoop]: Abstraction has 3574 states and 4481 transitions. [2020-09-04 18:02:51,577 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-04 18:02:51,577 INFO L276 IsEmpty]: Start isEmpty. Operand 3574 states and 4481 transitions. [2020-09-04 18:02:51,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 461 [2020-09-04 18:02:51,584 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 18:02:51,585 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 18:02:51,585 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-04 18:02:51,585 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 18:02:51,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 18:02:51,586 INFO L82 PathProgramCache]: Analyzing trace with hash 1795052938, now seen corresponding path program 1 times [2020-09-04 18:02:51,586 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 18:02:51,586 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1873051612] [2020-09-04 18:02:51,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 18:02:51,589 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 18:02:51,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:02:52,230 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-09-04 18:02:52,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 18:02:52,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:02:52,651 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 18:02:52,652 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1873051612] [2020-09-04 18:02:52,652 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 18:02:52,652 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-04 18:02:52,653 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890363928] [2020-09-04 18:02:52,653 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-04 18:02:52,655 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 18:02:52,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-04 18:02:52,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-04 18:02:52,656 INFO L87 Difference]: Start difference. First operand 3574 states and 4481 transitions. Second operand 5 states. [2020-09-04 18:02:57,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 18:02:57,298 INFO L93 Difference]: Finished difference Result 10152 states and 12790 transitions. [2020-09-04 18:02:57,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-04 18:02:57,299 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 460 [2020-09-04 18:02:57,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 18:02:57,332 INFO L225 Difference]: With dead ends: 10152 [2020-09-04 18:02:57,332 INFO L226 Difference]: Without dead ends: 6763 [2020-09-04 18:02:57,341 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-04 18:02:57,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6763 states. [2020-09-04 18:02:57,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6763 to 6761. [2020-09-04 18:02:57,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6761 states. [2020-09-04 18:02:57,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6761 states to 6761 states and 8462 transitions. [2020-09-04 18:02:57,731 INFO L78 Accepts]: Start accepts. Automaton has 6761 states and 8462 transitions. Word has length 460 [2020-09-04 18:02:57,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 18:02:57,732 INFO L479 AbstractCegarLoop]: Abstraction has 6761 states and 8462 transitions. [2020-09-04 18:02:57,732 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-04 18:02:57,732 INFO L276 IsEmpty]: Start isEmpty. Operand 6761 states and 8462 transitions. [2020-09-04 18:02:57,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 462 [2020-09-04 18:02:57,745 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 18:02:57,747 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 18:02:57,747 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-04 18:02:57,747 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 18:02:57,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 18:02:57,748 INFO L82 PathProgramCache]: Analyzing trace with hash -838934958, now seen corresponding path program 1 times [2020-09-04 18:02:57,748 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 18:02:57,749 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [401985714] [2020-09-04 18:02:57,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 18:02:57,752 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 18:02:57,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:02:58,301 WARN L193 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-09-04 18:02:58,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 18:02:58,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:02:58,469 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 18:02:58,470 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [401985714] [2020-09-04 18:02:58,470 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 18:02:58,470 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-04 18:02:58,470 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772437036] [2020-09-04 18:02:58,472 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-04 18:02:58,472 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 18:02:58,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-04 18:02:58,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 18:02:58,473 INFO L87 Difference]: Start difference. First operand 6761 states and 8462 transitions. Second operand 4 states. [2020-09-04 18:03:02,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 18:03:02,554 INFO L93 Difference]: Finished difference Result 19876 states and 24955 transitions. [2020-09-04 18:03:02,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-04 18:03:02,554 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 461 [2020-09-04 18:03:02,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 18:03:02,618 INFO L225 Difference]: With dead ends: 19876 [2020-09-04 18:03:02,619 INFO L226 Difference]: Without dead ends: 13334 [2020-09-04 18:03:02,638 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 18:03:02,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13334 states. [2020-09-04 18:03:03,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13334 to 6763. [2020-09-04 18:03:03,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6763 states. [2020-09-04 18:03:03,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6763 states to 6763 states and 8464 transitions. [2020-09-04 18:03:03,204 INFO L78 Accepts]: Start accepts. Automaton has 6763 states and 8464 transitions. Word has length 461 [2020-09-04 18:03:03,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 18:03:03,204 INFO L479 AbstractCegarLoop]: Abstraction has 6763 states and 8464 transitions. [2020-09-04 18:03:03,204 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-04 18:03:03,204 INFO L276 IsEmpty]: Start isEmpty. Operand 6763 states and 8464 transitions. [2020-09-04 18:03:03,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 463 [2020-09-04 18:03:03,217 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 18:03:03,217 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 18:03:03,218 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-04 18:03:03,218 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 18:03:03,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 18:03:03,218 INFO L82 PathProgramCache]: Analyzing trace with hash 1929671204, now seen corresponding path program 1 times [2020-09-04 18:03:03,219 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 18:03:03,219 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [601157894] [2020-09-04 18:03:03,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 18:03:03,222 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 18:03:03,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:03:03,733 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-09-04 18:03:03,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 18:03:03,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:03:03,985 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 18:03:03,986 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [601157894] [2020-09-04 18:03:03,986 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 18:03:03,986 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-04 18:03:03,986 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456918548] [2020-09-04 18:03:03,987 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-04 18:03:03,987 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 18:03:03,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-04 18:03:03,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-04 18:03:03,988 INFO L87 Difference]: Start difference. First operand 6763 states and 8464 transitions. Second operand 5 states. [2020-09-04 18:03:09,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 18:03:09,010 INFO L93 Difference]: Finished difference Result 19463 states and 24392 transitions. [2020-09-04 18:03:09,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-04 18:03:09,011 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 462 [2020-09-04 18:03:09,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 18:03:09,047 INFO L225 Difference]: With dead ends: 19463 [2020-09-04 18:03:09,047 INFO L226 Difference]: Without dead ends: 12922 [2020-09-04 18:03:09,064 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-04 18:03:09,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12922 states. [2020-09-04 18:03:09,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12922 to 12920. [2020-09-04 18:03:09,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12920 states. [2020-09-04 18:03:09,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12920 states to 12920 states and 16096 transitions. [2020-09-04 18:03:09,793 INFO L78 Accepts]: Start accepts. Automaton has 12920 states and 16096 transitions. Word has length 462 [2020-09-04 18:03:09,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 18:03:09,794 INFO L479 AbstractCegarLoop]: Abstraction has 12920 states and 16096 transitions. [2020-09-04 18:03:09,794 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-04 18:03:09,794 INFO L276 IsEmpty]: Start isEmpty. Operand 12920 states and 16096 transitions. [2020-09-04 18:03:09,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 464 [2020-09-04 18:03:09,810 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 18:03:09,811 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 18:03:09,811 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-04 18:03:09,811 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 18:03:09,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 18:03:09,812 INFO L82 PathProgramCache]: Analyzing trace with hash 71789604, now seen corresponding path program 1 times [2020-09-04 18:03:09,812 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 18:03:09,812 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1302931155] [2020-09-04 18:03:09,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 18:03:09,815 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 18:03:09,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:03:10,171 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-09-04 18:03:10,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 18:03:10,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:03:10,299 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 18:03:10,299 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1302931155] [2020-09-04 18:03:10,300 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 18:03:10,300 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-04 18:03:10,300 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512750011] [2020-09-04 18:03:10,301 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-04 18:03:10,301 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 18:03:10,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-04 18:03:10,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 18:03:10,301 INFO L87 Difference]: Start difference. First operand 12920 states and 16096 transitions. Second operand 4 states. [2020-09-04 18:03:15,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 18:03:15,645 INFO L93 Difference]: Finished difference Result 38290 states and 47774 transitions. [2020-09-04 18:03:15,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-04 18:03:15,646 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 463 [2020-09-04 18:03:15,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 18:03:15,698 INFO L225 Difference]: With dead ends: 38290 [2020-09-04 18:03:15,698 INFO L226 Difference]: Without dead ends: 25612 [2020-09-04 18:03:15,726 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 18:03:15,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25612 states. [2020-09-04 18:03:16,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25612 to 12924. [2020-09-04 18:03:16,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12924 states. [2020-09-04 18:03:16,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12924 states to 12924 states and 16100 transitions. [2020-09-04 18:03:16,654 INFO L78 Accepts]: Start accepts. Automaton has 12924 states and 16100 transitions. Word has length 463 [2020-09-04 18:03:16,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 18:03:16,654 INFO L479 AbstractCegarLoop]: Abstraction has 12924 states and 16100 transitions. [2020-09-04 18:03:16,654 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-04 18:03:16,654 INFO L276 IsEmpty]: Start isEmpty. Operand 12924 states and 16100 transitions. [2020-09-04 18:03:16,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 465 [2020-09-04 18:03:16,673 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 18:03:16,673 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 18:03:16,673 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-04 18:03:16,673 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 18:03:16,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 18:03:16,674 INFO L82 PathProgramCache]: Analyzing trace with hash -938787226, now seen corresponding path program 1 times [2020-09-04 18:03:16,674 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 18:03:16,674 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1856780149] [2020-09-04 18:03:16,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 18:03:16,678 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 18:03:16,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:03:17,196 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-09-04 18:03:17,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 18:03:17,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:03:17,409 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 18:03:17,409 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1856780149] [2020-09-04 18:03:17,410 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 18:03:17,410 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-04 18:03:17,410 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865683539] [2020-09-04 18:03:17,411 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-04 18:03:17,412 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 18:03:17,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-04 18:03:17,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-04 18:03:17,413 INFO L87 Difference]: Start difference. First operand 12924 states and 16100 transitions. Second operand 5 states. [2020-09-04 18:03:23,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 18:03:23,601 INFO L93 Difference]: Finished difference Result 34769 states and 43287 transitions. [2020-09-04 18:03:23,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-04 18:03:23,602 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 464 [2020-09-04 18:03:23,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 18:03:23,633 INFO L225 Difference]: With dead ends: 34769 [2020-09-04 18:03:23,633 INFO L226 Difference]: Without dead ends: 22093 [2020-09-04 18:03:23,659 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-04 18:03:23,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22093 states. [2020-09-04 18:03:25,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22093 to 22091. [2020-09-04 18:03:25,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22091 states. [2020-09-04 18:03:25,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22091 states to 22091 states and 27313 transitions. [2020-09-04 18:03:25,455 INFO L78 Accepts]: Start accepts. Automaton has 22091 states and 27313 transitions. Word has length 464 [2020-09-04 18:03:25,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 18:03:25,455 INFO L479 AbstractCegarLoop]: Abstraction has 22091 states and 27313 transitions. [2020-09-04 18:03:25,455 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-04 18:03:25,455 INFO L276 IsEmpty]: Start isEmpty. Operand 22091 states and 27313 transitions. [2020-09-04 18:03:25,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 466 [2020-09-04 18:03:25,474 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 18:03:25,474 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 18:03:25,475 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-04 18:03:25,475 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 18:03:25,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 18:03:25,475 INFO L82 PathProgramCache]: Analyzing trace with hash 1725981006, now seen corresponding path program 1 times [2020-09-04 18:03:25,475 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 18:03:25,476 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [502097193] [2020-09-04 18:03:25,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 18:03:25,478 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 18:03:25,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:03:25,836 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-09-04 18:03:25,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 18:03:25,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:03:25,994 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 18:03:25,995 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [502097193] [2020-09-04 18:03:25,995 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 18:03:25,995 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-04 18:03:25,996 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213009167] [2020-09-04 18:03:25,996 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-04 18:03:25,997 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 18:03:25,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-04 18:03:25,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 18:03:25,997 INFO L87 Difference]: Start difference. First operand 22091 states and 27313 transitions. Second operand 4 states. [2020-09-04 18:03:33,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 18:03:33,206 INFO L93 Difference]: Finished difference Result 65289 states and 80809 transitions. [2020-09-04 18:03:33,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-04 18:03:33,208 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 465 [2020-09-04 18:03:33,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 18:03:33,302 INFO L225 Difference]: With dead ends: 65289 [2020-09-04 18:03:33,302 INFO L226 Difference]: Without dead ends: 43858 [2020-09-04 18:03:33,449 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 18:03:33,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43858 states. [2020-09-04 18:03:35,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43858 to 22099. [2020-09-04 18:03:35,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22099 states. [2020-09-04 18:03:35,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22099 states to 22099 states and 27321 transitions. [2020-09-04 18:03:35,385 INFO L78 Accepts]: Start accepts. Automaton has 22099 states and 27321 transitions. Word has length 465 [2020-09-04 18:03:35,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 18:03:35,385 INFO L479 AbstractCegarLoop]: Abstraction has 22099 states and 27321 transitions. [2020-09-04 18:03:35,385 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-04 18:03:35,386 INFO L276 IsEmpty]: Start isEmpty. Operand 22099 states and 27321 transitions. [2020-09-04 18:03:35,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 467 [2020-09-04 18:03:35,414 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 18:03:35,414 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 18:03:35,415 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-04 18:03:35,415 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 18:03:35,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 18:03:35,415 INFO L82 PathProgramCache]: Analyzing trace with hash 1137855568, now seen corresponding path program 1 times [2020-09-04 18:03:35,416 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 18:03:35,416 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [872829519] [2020-09-04 18:03:35,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 18:03:35,419 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 18:03:35,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 18:03:35,539 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 18:03:35,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 18:03:35,657 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 18:03:36,220 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-04 18:03:36,220 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-04 18:03:36,222 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-04 18:03:36,286 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 06:03:36 BoogieIcfgContainer [2020-09-04 18:03:36,286 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 18:03:36,289 INFO L168 Benchmark]: Toolchain (without parser) took 62610.81 ms. Allocated memory was 137.9 MB in the beginning and 2.2 GB in the end (delta: 2.0 GB). Free memory was 99.3 MB in the beginning and 1.8 GB in the end (delta: -1.7 GB). Peak memory consumption was 370.0 MB. Max. memory is 7.1 GB. [2020-09-04 18:03:36,290 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 137.9 MB. Free memory was 119.2 MB in the beginning and 119.0 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-04 18:03:36,290 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1266.03 ms. Allocated memory was 137.9 MB in the beginning and 202.4 MB in the end (delta: 64.5 MB). Free memory was 99.1 MB in the beginning and 165.3 MB in the end (delta: -66.3 MB). Peak memory consumption was 33.7 MB. Max. memory is 7.1 GB. [2020-09-04 18:03:36,291 INFO L168 Benchmark]: Boogie Preprocessor took 100.26 ms. Allocated memory is still 202.4 MB. Free memory was 165.3 MB in the beginning and 161.1 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB. [2020-09-04 18:03:36,293 INFO L168 Benchmark]: RCFGBuilder took 1855.24 ms. Allocated memory was 202.4 MB in the beginning and 233.3 MB in the end (delta: 30.9 MB). Free memory was 161.1 MB in the beginning and 112.6 MB in the end (delta: 48.5 MB). Peak memory consumption was 82.2 MB. Max. memory is 7.1 GB. [2020-09-04 18:03:36,296 INFO L168 Benchmark]: TraceAbstraction took 59383.27 ms. Allocated memory was 233.3 MB in the beginning and 2.2 GB in the end (delta: 1.9 GB). Free memory was 111.2 MB in the beginning and 1.8 GB in the end (delta: -1.7 GB). Peak memory consumption was 286.5 MB. Max. memory is 7.1 GB. [2020-09-04 18:03:36,302 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 137.9 MB. Free memory was 119.2 MB in the beginning and 119.0 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1266.03 ms. Allocated memory was 137.9 MB in the beginning and 202.4 MB in the end (delta: 64.5 MB). Free memory was 99.1 MB in the beginning and 165.3 MB in the end (delta: -66.3 MB). Peak memory consumption was 33.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 100.26 ms. Allocated memory is still 202.4 MB. Free memory was 165.3 MB in the beginning and 161.1 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1855.24 ms. Allocated memory was 202.4 MB in the beginning and 233.3 MB in the end (delta: 30.9 MB). Free memory was 161.1 MB in the beginning and 112.6 MB in the end (delta: 48.5 MB). Peak memory consumption was 82.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 59383.27 ms. Allocated memory was 233.3 MB in the beginning and 2.2 GB in the end (delta: 1.9 GB). Free memory was 111.2 MB in the beginning and 1.8 GB in the end (delta: -1.7 GB). Peak memory consumption was 286.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 891]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L1] int __return_main; [L14] msg_t nomsg = (msg_t )-1; [L15] port_t p12 = 0; [L16] char p12_old = '\x0'; [L17] char p12_new = '\x0'; [L18] _Bool ep12 = 0; [L19] port_t p13 = 0; [L20] char p13_old = '\x0'; [L21] char p13_new = '\x0'; [L22] _Bool ep13 = 0; [L23] port_t p21 = 0; [L24] char p21_old = '\x0'; [L25] char p21_new = '\x0'; [L26] _Bool ep21 = 0; [L27] port_t p23 = 0; [L28] char p23_old = '\x0'; [L29] char p23_new = '\x0'; [L30] _Bool ep23 = 0; [L31] port_t p31 = 0; [L32] char p31_old = '\x0'; [L33] char p31_new = '\x0'; [L34] _Bool ep31 = 0; [L35] port_t p32 = 0; [L36] char p32_old = '\x0'; [L37] char p32_new = '\x0'; [L38] _Bool ep32 = 0; [L39] char id1 = '\x0'; [L40] char r1 = '\x0'; [L41] char st1 = '\x0'; [L42] char nl1 = '\x0'; [L43] char m1 = '\x0'; [L44] char max1 = '\x0'; [L45] _Bool mode1 = 0; [L46] _Bool newmax1 = 0; [L47] char id2 = '\x0'; [L48] char r2 = '\x0'; [L49] char st2 = '\x0'; [L50] char nl2 = '\x0'; [L51] char m2 = '\x0'; [L52] char max2 = '\x0'; [L53] _Bool mode2 = 0; [L54] _Bool newmax2 = 0; [L55] char id3 = '\x0'; [L56] char r3 = '\x0'; [L57] char st3 = '\x0'; [L58] char nl3 = '\x0'; [L59] char m3 = '\x0'; [L60] char max3 = '\x0'; [L61] _Bool mode3 = 0; [L62] _Bool newmax3 = 0; [L66] void (*nodes[3])() = { &node1, &node2, &node3 }; [L70] int __return_1863; [L71] int __return_2009; [L72] int __return_2142; [L73] int __return_2281; [L74] int __return_2419; [L75] int __tmp_2420_0; [L76] int __return_2543; [L77] int __return_2433; [L80] int main__c1; [L81] int main__i2; [L82] main__c1 = 0 [L83] ep12 = __VERIFIER_nondet_bool() [L84] ep13 = __VERIFIER_nondet_bool() [L85] ep21 = __VERIFIER_nondet_bool() [L86] ep23 = __VERIFIER_nondet_bool() [L87] ep31 = __VERIFIER_nondet_bool() [L88] ep32 = __VERIFIER_nondet_bool() [L89] id1 = __VERIFIER_nondet_char() [L90] r1 = __VERIFIER_nondet_char() [L91] st1 = __VERIFIER_nondet_char() [L92] nl1 = __VERIFIER_nondet_char() [L93] m1 = __VERIFIER_nondet_char() [L94] max1 = __VERIFIER_nondet_char() [L95] mode1 = __VERIFIER_nondet_bool() [L96] newmax1 = __VERIFIER_nondet_bool() [L97] id2 = __VERIFIER_nondet_char() [L98] r2 = __VERIFIER_nondet_char() [L99] st2 = __VERIFIER_nondet_char() [L100] nl2 = __VERIFIER_nondet_char() [L101] m2 = __VERIFIER_nondet_char() [L102] max2 = __VERIFIER_nondet_char() [L103] mode2 = __VERIFIER_nondet_bool() [L104] newmax2 = __VERIFIER_nondet_bool() [L105] id3 = __VERIFIER_nondet_char() [L106] r3 = __VERIFIER_nondet_char() [L107] st3 = __VERIFIER_nondet_char() [L108] nl3 = __VERIFIER_nondet_char() [L109] m3 = __VERIFIER_nondet_char() [L110] max3 = __VERIFIER_nondet_char() [L111] mode3 = __VERIFIER_nondet_bool() [L112] newmax3 = __VERIFIER_nondet_bool() [L114] _Bool init__r121; [L115] _Bool init__r131; [L116] _Bool init__r211; [L117] _Bool init__r231; [L118] _Bool init__r311; [L119] _Bool init__r321; [L120] _Bool init__r122; [L121] int init__tmp; [L122] _Bool init__r132; [L123] int init__tmp___0; [L124] _Bool init__r212; [L125] int init__tmp___1; [L126] _Bool init__r232; [L127] int init__tmp___2; [L128] _Bool init__r312; [L129] int init__tmp___3; [L130] _Bool init__r322; [L131] int init__tmp___4; [L132] int init__tmp___5; [L133] init__r121 = ep12 [L134] init__r131 = ep13 [L135] init__r211 = ep21 [L136] init__r231 = ep23 [L137] init__r311 = ep31 [L138] init__r321 = ep32 [L139] COND FALSE !(!(init__r121 == 0)) [L2433] COND FALSE !(!(init__r131 == 0)) [L2449] init__tmp = 0 [L143] init__r122 = (_Bool)init__tmp [L144] COND FALSE !(!(init__r131 == 0)) [L2410] COND FALSE !(!(init__r121 == 0)) [L2426] init__tmp___0 = 0 [L148] init__r132 = (_Bool)init__tmp___0 [L149] COND FALSE !(!(init__r211 == 0)) [L2387] COND FALSE !(!(init__r231 == 0)) [L2403] init__tmp___1 = 0 [L153] init__r212 = (_Bool)init__tmp___1 [L154] COND FALSE !(!(init__r231 == 0)) [L2364] COND FALSE !(!(init__r211 == 0)) [L2380] init__tmp___2 = 0 [L158] init__r232 = (_Bool)init__tmp___2 [L159] COND FALSE !(!(init__r311 == 0)) [L2341] COND FALSE !(!(init__r321 == 0)) [L2357] init__tmp___3 = 0 [L163] init__r312 = (_Bool)init__tmp___3 [L164] COND FALSE !(!(init__r321 == 0)) [L2318] COND FALSE !(!(init__r311 == 0)) [L2334] init__tmp___4 = 0 [L168] init__r322 = (_Bool)init__tmp___4 [L169] COND TRUE ((int)id1) != ((int)id2) [L171] COND TRUE ((int)id1) != ((int)id3) [L173] COND TRUE ((int)id2) != ((int)id3) [L175] COND TRUE ((int)id1) >= 0 [L177] COND TRUE ((int)id2) >= 0 [L179] COND TRUE ((int)id3) >= 0 [L181] COND TRUE ((int)r1) == 0 [L183] COND TRUE ((int)r2) == 0 [L185] COND TRUE ((int)r3) == 0 [L187] COND TRUE ((int)max1) == ((int)id1) [L189] COND TRUE ((int)max2) == ((int)id2) [L191] COND TRUE ((int)max3) == ((int)id3) [L193] COND TRUE ((int)st1) == 0 [L195] COND TRUE ((int)st2) == 0 [L197] COND TRUE ((int)st3) == 0 [L199] COND TRUE ((int)nl1) == 0 [L201] COND TRUE ((int)nl2) == 0 [L203] COND TRUE ((int)nl3) == 0 [L205] COND TRUE ((int)mode1) == 0 [L207] COND TRUE ((int)mode2) == 0 [L209] COND TRUE ((int)mode3) == 0 [L211] COND TRUE !(newmax1 == 0) [L213] COND TRUE !(newmax2 == 0) [L215] COND TRUE !(newmax3 == 0) [L217] init__tmp___5 = 1 [L218] __return_1863 = init__tmp___5 [L219] main__i2 = __return_1863 [L220] COND TRUE main__i2 != 0 [L222] p12_old = nomsg [L223] p12_new = nomsg [L224] p13_old = nomsg [L225] p13_new = nomsg [L226] p21_old = nomsg [L227] p21_new = nomsg [L228] p23_old = nomsg [L229] p23_new = nomsg [L230] p31_old = nomsg [L231] p31_new = nomsg [L232] p32_old = nomsg [L233] p32_new = nomsg [L234] main__i2 = 0 [L235] COND TRUE main__i2 < 6 [L238] _Bool node1__newmax; [L239] node1__newmax = 0 [L240] COND FALSE !(!(mode1 == 0)) [L246] COND TRUE ((int)r1) < 2 [L248] COND FALSE !(!(ep12 == 0)) [L261] COND FALSE !(!(ep13 == 0)) [L274] mode1 = 1 [L276] _Bool node2__newmax; [L277] node2__newmax = 0 [L278] COND FALSE !(!(mode2 == 0)) [L284] COND TRUE ((int)r2) < 2 [L286] COND FALSE !(!(ep21 == 0)) [L299] COND FALSE !(!(ep23 == 0)) [L312] mode2 = 1 [L314] _Bool node3__newmax; [L315] node3__newmax = 0 [L316] COND FALSE !(!(mode3 == 0)) [L322] COND TRUE ((int)r3) < 2 [L324] COND FALSE !(!(ep31 == 0)) [L337] COND FALSE !(!(ep32 == 0)) [L350] mode3 = 1 [L351] p12_old = p12_new [L352] p12_new = nomsg [L353] p13_old = p13_new [L354] p13_new = nomsg [L355] p21_old = p21_new [L356] p21_new = nomsg [L357] p23_old = p23_new [L358] p23_new = nomsg [L359] p31_old = p31_new [L360] p31_new = nomsg [L361] p32_old = p32_new [L362] p32_new = nomsg [L364] int check__tmp; [L365] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L367] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L369] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L371] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L373] COND FALSE !(((int)r1) >= 2) [L379] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L381] COND TRUE ((int)r1) < 2 [L383] COND FALSE !(((int)r1) >= 2) [L389] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L391] COND TRUE ((int)r1) < 2 [L393] check__tmp = 1 [L394] __return_2009 = check__tmp [L395] main__c1 = __return_2009 [L397] _Bool __tmp_1; [L398] __tmp_1 = main__c1 [L399] _Bool assert__arg; [L400] assert__arg = __tmp_1 [L401] COND FALSE !(assert__arg == 0) [L407] int main____CPAchecker_TMP_0 = main__i2; [L408] main__i2 = main__i2 + 1 [L409] COND TRUE main__i2 < 6 [L412] _Bool node1__newmax; [L413] node1__newmax = 0 [L414] COND TRUE !(mode1 == 0) [L416] r1 = (char)(((int)r1) + 1) [L417] COND FALSE !(!(ep21 == 0)) [L426] COND FALSE !(!(ep31 == 0)) [L435] newmax1 = node1__newmax [L436] COND FALSE !(((int)r1) == 2) [L442] mode1 = 0 [L444] _Bool node2__newmax; [L445] node2__newmax = 0 [L446] COND TRUE !(mode2 == 0) [L448] r2 = (char)(((int)r2) + 1) [L449] COND FALSE !(!(ep12 == 0)) [L458] COND FALSE !(!(ep32 == 0)) [L467] newmax2 = node2__newmax [L468] COND FALSE !(((int)r2) == 2) [L474] mode2 = 0 [L476] _Bool node3__newmax; [L477] node3__newmax = 0 [L478] COND TRUE !(mode3 == 0) [L480] r3 = (char)(((int)r3) + 1) [L481] COND FALSE !(!(ep13 == 0)) [L490] COND FALSE !(!(ep23 == 0)) [L499] newmax3 = node3__newmax [L500] COND FALSE !(((int)r3) == 2) [L506] mode3 = 0 [L507] p12_old = p12_new [L508] p12_new = nomsg [L509] p13_old = p13_new [L510] p13_new = nomsg [L511] p21_old = p21_new [L512] p21_new = nomsg [L513] p23_old = p23_new [L514] p23_new = nomsg [L515] p31_old = p31_new [L516] p31_new = nomsg [L517] p32_old = p32_new [L518] p32_new = nomsg [L520] int check__tmp; [L521] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L523] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L525] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L527] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L529] COND FALSE !(((int)r1) >= 2) [L535] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L537] COND TRUE ((int)r1) < 2 [L539] COND FALSE !(((int)r1) >= 2) [L545] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L547] COND TRUE ((int)r1) < 2 [L549] check__tmp = 1 [L550] __return_2142 = check__tmp [L551] main__c1 = __return_2142 [L553] _Bool __tmp_2; [L554] __tmp_2 = main__c1 [L555] _Bool assert__arg; [L556] assert__arg = __tmp_2 [L557] COND FALSE !(assert__arg == 0) [L563] int main____CPAchecker_TMP_0 = main__i2; [L564] main__i2 = main__i2 + 1 [L565] COND TRUE main__i2 < 6 [L568] _Bool node1__newmax; [L569] node1__newmax = 0 [L570] COND FALSE !(!(mode1 == 0)) [L576] COND TRUE ((int)r1) < 2 [L578] COND FALSE !(!(ep12 == 0)) [L591] COND FALSE !(!(ep13 == 0)) [L604] mode1 = 1 [L606] _Bool node2__newmax; [L607] node2__newmax = 0 [L608] COND FALSE !(!(mode2 == 0)) [L614] COND TRUE ((int)r2) < 2 [L616] COND FALSE !(!(ep21 == 0)) [L629] COND FALSE !(!(ep23 == 0)) [L642] mode2 = 1 [L644] _Bool node3__newmax; [L645] node3__newmax = 0 [L646] COND FALSE !(!(mode3 == 0)) [L652] COND TRUE ((int)r3) < 2 [L654] COND FALSE !(!(ep31 == 0)) [L667] COND FALSE !(!(ep32 == 0)) [L680] mode3 = 1 [L681] p12_old = p12_new [L682] p12_new = nomsg [L683] p13_old = p13_new [L684] p13_new = nomsg [L685] p21_old = p21_new [L686] p21_new = nomsg [L687] p23_old = p23_new [L688] p23_new = nomsg [L689] p31_old = p31_new [L690] p31_new = nomsg [L691] p32_old = p32_new [L692] p32_new = nomsg [L694] int check__tmp; [L695] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L697] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L699] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L701] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L703] COND FALSE !(((int)r1) >= 2) [L709] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L711] COND TRUE ((int)r1) < 2 [L713] COND FALSE !(((int)r1) >= 2) [L719] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L721] COND TRUE ((int)r1) < 2 [L723] check__tmp = 1 [L724] __return_2281 = check__tmp [L725] main__c1 = __return_2281 [L727] _Bool __tmp_3; [L728] __tmp_3 = main__c1 [L729] _Bool assert__arg; [L730] assert__arg = __tmp_3 [L731] COND FALSE !(assert__arg == 0) [L737] int main____CPAchecker_TMP_0 = main__i2; [L738] main__i2 = main__i2 + 1 [L739] COND TRUE main__i2 < 6 [L742] _Bool node1__newmax; [L743] node1__newmax = 0 [L744] COND TRUE !(mode1 == 0) [L746] r1 = (char)(((int)r1) + 1) [L747] COND FALSE !(!(ep21 == 0)) [L756] COND FALSE !(!(ep31 == 0)) [L765] newmax1 = node1__newmax [L766] COND TRUE ((int)r1) == 2 [L768] COND TRUE ((int)max1) == ((int)id1) [L770] st1 = 1 [L772] mode1 = 0 [L774] _Bool node2__newmax; [L775] node2__newmax = 0 [L776] COND TRUE !(mode2 == 0) [L778] r2 = (char)(((int)r2) + 1) [L779] COND FALSE !(!(ep12 == 0)) [L788] COND FALSE !(!(ep32 == 0)) [L797] newmax2 = node2__newmax [L798] COND TRUE ((int)r2) == 2 [L800] COND TRUE ((int)max2) == ((int)id2) [L802] st2 = 1 [L804] mode2 = 0 [L806] _Bool node3__newmax; [L807] node3__newmax = 0 [L808] COND TRUE !(mode3 == 0) [L810] r3 = (char)(((int)r3) + 1) [L811] COND FALSE !(!(ep13 == 0)) [L820] COND FALSE !(!(ep23 == 0)) [L829] newmax3 = node3__newmax [L830] COND TRUE ((int)r3) == 2 [L832] COND TRUE ((int)max3) == ((int)id3) [L834] st3 = 1 [L836] mode3 = 0 [L837] p12_old = p12_new [L838] p12_new = nomsg [L839] p13_old = p13_new [L840] p13_new = nomsg [L841] p21_old = p21_new [L842] p21_new = nomsg [L843] p23_old = p23_new [L844] p23_new = nomsg [L845] p31_old = p31_new [L846] p31_new = nomsg [L847] p32_old = p32_new [L848] p32_new = nomsg [L850] int check__tmp; [L851] COND FALSE !(((((int)st1) + ((int)st2)) + ((int)st3)) <= 1) [L1533] check__tmp = 0 [L879] __return_2419 = check__tmp [L880] main__c1 = __return_2419 [L881] __tmp_2420_0 = main____CPAchecker_TMP_0 [L883] main____CPAchecker_TMP_0 = __tmp_2420_0 [L885] _Bool __tmp_4; [L886] __tmp_4 = main__c1 [L887] _Bool assert__arg; [L888] assert__arg = __tmp_4 [L889] COND TRUE assert__arg == 0 [L891] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 917 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 59.2s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 43.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 11015 SDtfs, 8956 SDslu, 8390 SDs, 0 SdLazy, 11501 SolverSat, 66 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 26.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 51 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22099occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 6.7s AutomataMinimizationTime, 9 MinimizatonAttempts, 41065 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...