/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks NOT_INCREMENTALLY -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 12:36:15,988 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 12:36:15,991 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 12:36:16,009 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 12:36:16,010 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 12:36:16,013 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 12:36:16,015 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 12:36:16,024 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 12:36:16,028 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 12:36:16,033 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 12:36:16,034 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 12:36:16,036 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 12:36:16,036 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 12:36:16,037 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 12:36:16,040 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 12:36:16,041 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 12:36:16,042 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 12:36:16,042 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 12:36:16,044 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 12:36:16,045 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 12:36:16,046 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 12:36:16,047 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 12:36:16,048 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 12:36:16,049 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 12:36:16,051 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 12:36:16,058 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 12:36:16,059 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 12:36:16,059 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 12:36:16,060 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-20 12:36:16,073 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 12:36:16,074 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 12:36:16,075 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 12:36:16,075 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 12:36:16,075 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 12:36:16,075 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 12:36:16,076 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 12:36:16,076 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 12:36:16,076 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 12:36:16,076 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 12:36:16,076 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 12:36:16,076 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 12:36:16,077 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 12:36:16,077 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 12:36:16,077 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 12:36:16,077 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 12:36:16,077 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 12:36:16,078 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 12:36:16,078 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 12:36:16,078 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 12:36:16,078 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 12:36:16,078 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 12:36:16,079 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 12:36:16,079 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 12:36:16,079 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 12:36:16,079 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 12:36:16,079 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 12:36:16,080 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 12:36:16,080 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 12:36:16,080 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> NOT_INCREMENTALLY [2020-07-20 12:36:16,374 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 12:36:16,387 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 12:36:16,390 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 12:36:16,392 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 12:36:16,392 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 12:36:16,393 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-07-20 12:36:16,451 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/41fe274f4/d8a38b372c534a0a8587a1381b3b3fc2/FLAG4622d0fe9 [2020-07-20 12:36:17,104 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 12:36:17,105 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-07-20 12:36:17,138 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/41fe274f4/d8a38b372c534a0a8587a1381b3b3fc2/FLAG4622d0fe9 [2020-07-20 12:36:17,235 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/41fe274f4/d8a38b372c534a0a8587a1381b3b3fc2 [2020-07-20 12:36:17,243 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 12:36:17,245 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 12:36:17,246 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 12:36:17,247 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 12:36:17,250 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 12:36:17,251 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 12:36:17" (1/1) ... [2020-07-20 12:36:17,254 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63b08588 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:36:17, skipping insertion in model container [2020-07-20 12:36:17,254 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 12:36:17" (1/1) ... [2020-07-20 12:36:17,260 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 12:36:17,429 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 12:36:18,769 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 12:36:18,784 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 12:36:19,717 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 12:36:19,757 INFO L208 MainTranslator]: Completed translation [2020-07-20 12:36:19,758 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:36:19 WrapperNode [2020-07-20 12:36:19,758 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 12:36:19,759 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 12:36:19,759 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 12:36:19,759 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 12:36:19,780 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:36:19" (1/1) ... [2020-07-20 12:36:19,782 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:36:19" (1/1) ... [2020-07-20 12:36:19,851 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:36:19" (1/1) ... [2020-07-20 12:36:19,855 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:36:19" (1/1) ... [2020-07-20 12:36:19,941 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:36:19" (1/1) ... [2020-07-20 12:36:19,978 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:36:19" (1/1) ... [2020-07-20 12:36:19,987 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:36:19" (1/1) ... [2020-07-20 12:36:20,002 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 12:36:20,003 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 12:36:20,003 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 12:36:20,003 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 12:36:20,004 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:36:19" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2020-07-20 12:36:20,081 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 12:36:20,082 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 12:36:20,082 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-20 12:36:20,082 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 12:36:20,082 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 12:36:20,083 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-07-20 12:36:20,083 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-07-20 12:36:20,083 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-07-20 12:36:20,083 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-07-20 12:36:20,083 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-20 12:36:20,084 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-20 12:36:20,084 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-07-20 12:36:20,084 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-07-20 12:36:20,084 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-07-20 12:36:20,084 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-07-20 12:36:20,085 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-07-20 12:36:20,085 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-07-20 12:36:20,085 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-07-20 12:36:20,085 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-07-20 12:36:20,085 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 12:36:20,086 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 12:36:20,086 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 12:36:23,407 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 12:36:23,407 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-20 12:36:23,417 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 12:36:23 BoogieIcfgContainer [2020-07-20 12:36:23,417 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 12:36:23,419 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 12:36:23,419 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 12:36:23,423 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 12:36:23,424 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 12:36:17" (1/3) ... [2020-07-20 12:36:23,425 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f181a1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 12:36:23, skipping insertion in model container [2020-07-20 12:36:23,425 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:36:19" (2/3) ... [2020-07-20 12:36:23,425 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f181a1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 12:36:23, skipping insertion in model container [2020-07-20 12:36:23,426 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 12:36:23" (3/3) ... [2020-07-20 12:36:23,428 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-07-20 12:36:23,442 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 12:36:23,453 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 12 error locations. [2020-07-20 12:36:23,471 INFO L251 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2020-07-20 12:36:23,507 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 12:36:23,507 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 12:36:23,507 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 12:36:23,508 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 12:36:23,508 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 12:36:23,508 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 12:36:23,508 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 12:36:23,508 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 12:36:23,547 INFO L276 IsEmpty]: Start isEmpty. Operand 1027 states. [2020-07-20 12:36:23,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2020-07-20 12:36:23,576 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 12:36:23,578 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 12:36:23,579 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 12:36:23,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 12:36:23,588 INFO L82 PathProgramCache]: Analyzing trace with hash -537993708, now seen corresponding path program 1 times [2020-07-20 12:36:23,599 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 12:36:23,599 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1835389144] [2020-07-20 12:36:23,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 12:36:24,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 12:36:24,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 2206 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-20 12:36:24,150 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 12:36:24,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 12:36:24,409 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 12:36:24,410 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1835389144] [2020-07-20 12:36:24,411 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 12:36:24,411 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 12:36:24,412 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184085307] [2020-07-20 12:36:24,419 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 12:36:24,420 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 12:36:24,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 12:36:24,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 12:36:24,436 INFO L87 Difference]: Start difference. First operand 1027 states. Second operand 3 states. [2020-07-20 12:36:24,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 12:36:24,709 INFO L93 Difference]: Finished difference Result 1794 states and 3183 transitions. [2020-07-20 12:36:24,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 12:36:24,711 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 327 [2020-07-20 12:36:24,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 12:36:24,738 INFO L225 Difference]: With dead ends: 1794 [2020-07-20 12:36:24,738 INFO L226 Difference]: Without dead ends: 1483 [2020-07-20 12:36:24,744 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 325 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 12:36:24,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1483 states. [2020-07-20 12:36:24,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1483 to 1481. [2020-07-20 12:36:24,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1481 states. [2020-07-20 12:36:24,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1481 states to 1481 states and 2263 transitions. [2020-07-20 12:36:24,869 INFO L78 Accepts]: Start accepts. Automaton has 1481 states and 2263 transitions. Word has length 327 [2020-07-20 12:36:24,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 12:36:24,874 INFO L479 AbstractCegarLoop]: Abstraction has 1481 states and 2263 transitions. [2020-07-20 12:36:24,874 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 12:36:24,874 INFO L276 IsEmpty]: Start isEmpty. Operand 1481 states and 2263 transitions. [2020-07-20 12:36:24,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2020-07-20 12:36:24,886 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 12:36:24,887 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 12:36:25,102 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 12:36:25,103 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 12:36:25,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 12:36:25,105 INFO L82 PathProgramCache]: Analyzing trace with hash 297127498, now seen corresponding path program 1 times [2020-07-20 12:36:25,105 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 12:36:25,106 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1855633547] [2020-07-20 12:36:25,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 12:36:25,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 12:36:25,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 2206 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-20 12:36:25,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 12:36:25,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 12:36:25,706 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 12:36:25,706 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1855633547] [2020-07-20 12:36:25,706 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 12:36:25,707 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 12:36:25,707 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657843059] [2020-07-20 12:36:25,709 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 12:36:25,709 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 12:36:25,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 12:36:25,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 12:36:25,710 INFO L87 Difference]: Start difference. First operand 1481 states and 2263 transitions. Second operand 3 states. [2020-07-20 12:36:25,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 12:36:25,966 INFO L93 Difference]: Finished difference Result 2844 states and 4401 transitions. [2020-07-20 12:36:25,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 12:36:25,967 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 327 [2020-07-20 12:36:25,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 12:36:25,981 INFO L225 Difference]: With dead ends: 2844 [2020-07-20 12:36:25,981 INFO L226 Difference]: Without dead ends: 2425 [2020-07-20 12:36:25,984 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 325 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 12:36:25,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2425 states. [2020-07-20 12:36:26,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2425 to 2423. [2020-07-20 12:36:26,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2423 states. [2020-07-20 12:36:26,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2423 states to 2423 states and 3727 transitions. [2020-07-20 12:36:26,061 INFO L78 Accepts]: Start accepts. Automaton has 2423 states and 3727 transitions. Word has length 327 [2020-07-20 12:36:26,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 12:36:26,062 INFO L479 AbstractCegarLoop]: Abstraction has 2423 states and 3727 transitions. [2020-07-20 12:36:26,062 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 12:36:26,062 INFO L276 IsEmpty]: Start isEmpty. Operand 2423 states and 3727 transitions. [2020-07-20 12:36:26,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2020-07-20 12:36:26,070 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 12:36:26,071 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 12:36:26,283 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 12:36:26,284 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 12:36:26,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 12:36:26,285 INFO L82 PathProgramCache]: Analyzing trace with hash -586459585, now seen corresponding path program 1 times [2020-07-20 12:36:26,285 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 12:36:26,285 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1640519772] [2020-07-20 12:36:26,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 12:36:26,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 12:36:26,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 2207 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-20 12:36:26,732 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 12:36:26,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 12:36:26,847 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 12:36:26,856 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1640519772] [2020-07-20 12:36:26,857 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 12:36:26,857 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 12:36:26,858 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688774766] [2020-07-20 12:36:26,859 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 12:36:26,859 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 12:36:26,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 12:36:26,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 12:36:26,860 INFO L87 Difference]: Start difference. First operand 2423 states and 3727 transitions. Second operand 3 states. [2020-07-20 12:36:27,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 12:36:27,234 INFO L93 Difference]: Finished difference Result 5038 states and 7854 transitions. [2020-07-20 12:36:27,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 12:36:27,235 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 327 [2020-07-20 12:36:27,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 12:36:27,257 INFO L225 Difference]: With dead ends: 5038 [2020-07-20 12:36:27,257 INFO L226 Difference]: Without dead ends: 4361 [2020-07-20 12:36:27,260 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 325 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 12:36:27,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4361 states. [2020-07-20 12:36:27,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4361 to 4359. [2020-07-20 12:36:27,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4359 states. [2020-07-20 12:36:27,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4359 states to 4359 states and 6733 transitions. [2020-07-20 12:36:27,397 INFO L78 Accepts]: Start accepts. Automaton has 4359 states and 6733 transitions. Word has length 327 [2020-07-20 12:36:27,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 12:36:27,398 INFO L479 AbstractCegarLoop]: Abstraction has 4359 states and 6733 transitions. [2020-07-20 12:36:27,398 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 12:36:27,398 INFO L276 IsEmpty]: Start isEmpty. Operand 4359 states and 6733 transitions. [2020-07-20 12:36:27,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2020-07-20 12:36:27,411 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 12:36:27,411 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 12:36:27,624 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 12:36:27,625 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 12:36:27,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 12:36:27,626 INFO L82 PathProgramCache]: Analyzing trace with hash -586798209, now seen corresponding path program 1 times [2020-07-20 12:36:27,627 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 12:36:27,627 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1705000743] [2020-07-20 12:36:27,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 12:36:28,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 12:36:28,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 2208 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 12:36:28,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 12:36:28,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 12:36:28,216 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 12:36:28,216 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1705000743] [2020-07-20 12:36:28,216 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 12:36:28,216 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 12:36:28,217 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733181075] [2020-07-20 12:36:28,218 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 12:36:28,218 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 12:36:28,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 12:36:28,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 12:36:28,218 INFO L87 Difference]: Start difference. First operand 4359 states and 6733 transitions. Second operand 4 states. [2020-07-20 12:36:28,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 12:36:28,613 INFO L93 Difference]: Finished difference Result 12887 states and 19882 transitions. [2020-07-20 12:36:28,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 12:36:28,614 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 327 [2020-07-20 12:36:28,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 12:36:28,655 INFO L225 Difference]: With dead ends: 12887 [2020-07-20 12:36:28,655 INFO L226 Difference]: Without dead ends: 8541 [2020-07-20 12:36:28,666 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 327 GetRequests, 324 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-20 12:36:28,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8541 states. [2020-07-20 12:36:28,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8541 to 8350. [2020-07-20 12:36:28,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8350 states. [2020-07-20 12:36:29,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8350 states to 8350 states and 12854 transitions. [2020-07-20 12:36:29,006 INFO L78 Accepts]: Start accepts. Automaton has 8350 states and 12854 transitions. Word has length 327 [2020-07-20 12:36:29,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 12:36:29,007 INFO L479 AbstractCegarLoop]: Abstraction has 8350 states and 12854 transitions. [2020-07-20 12:36:29,007 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 12:36:29,007 INFO L276 IsEmpty]: Start isEmpty. Operand 8350 states and 12854 transitions. [2020-07-20 12:36:29,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2020-07-20 12:36:29,027 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 12:36:29,028 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] [2020-07-20 12:36:29,241 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 12:36:29,241 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 12:36:29,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 12:36:29,242 INFO L82 PathProgramCache]: Analyzing trace with hash 2126519767, now seen corresponding path program 1 times [2020-07-20 12:36:29,242 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 12:36:29,243 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1522777104] [2020-07-20 12:36:29,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 12:36:29,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 12:36:29,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 2213 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-20 12:36:29,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 12:36:29,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 12:36:29,714 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 12:36:29,714 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1522777104] [2020-07-20 12:36:29,714 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 12:36:29,714 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 12:36:29,715 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021137055] [2020-07-20 12:36:29,717 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 12:36:29,717 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 12:36:29,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 12:36:29,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 12:36:29,718 INFO L87 Difference]: Start difference. First operand 8350 states and 12854 transitions. Second operand 3 states. [2020-07-20 12:36:30,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 12:36:30,173 INFO L93 Difference]: Finished difference Result 25009 states and 38498 transitions. [2020-07-20 12:36:30,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 12:36:30,174 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 329 [2020-07-20 12:36:30,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 12:36:30,246 INFO L225 Difference]: With dead ends: 25009 [2020-07-20 12:36:30,247 INFO L226 Difference]: Without dead ends: 16682 [2020-07-20 12:36:30,264 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 327 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 12:36:30,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16682 states. [2020-07-20 12:36:30,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16682 to 8361. [2020-07-20 12:36:30,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8361 states. [2020-07-20 12:36:30,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8361 states to 8361 states and 12870 transitions. [2020-07-20 12:36:30,591 INFO L78 Accepts]: Start accepts. Automaton has 8361 states and 12870 transitions. Word has length 329 [2020-07-20 12:36:30,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 12:36:30,591 INFO L479 AbstractCegarLoop]: Abstraction has 8361 states and 12870 transitions. [2020-07-20 12:36:30,594 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 12:36:30,598 INFO L276 IsEmpty]: Start isEmpty. Operand 8361 states and 12870 transitions. [2020-07-20 12:36:30,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2020-07-20 12:36:30,622 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 12:36:30,622 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] [2020-07-20 12:36:30,836 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 12:36:30,837 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 12:36:30,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 12:36:30,837 INFO L82 PathProgramCache]: Analyzing trace with hash 1628240060, now seen corresponding path program 1 times [2020-07-20 12:36:30,837 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 12:36:30,838 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [278080056] [2020-07-20 12:36:30,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 12:36:31,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 12:36:31,243 INFO L263 TraceCheckSpWp]: Trace formula consists of 2211 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-20 12:36:31,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 12:36:31,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 12:36:31,429 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 12:36:31,429 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [278080056] [2020-07-20 12:36:31,429 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 12:36:31,429 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 12:36:31,430 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497215993] [2020-07-20 12:36:31,431 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 12:36:31,431 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 12:36:31,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 12:36:31,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 12:36:31,431 INFO L87 Difference]: Start difference. First operand 8361 states and 12870 transitions. Second operand 3 states. [2020-07-20 12:36:31,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 12:36:31,859 INFO L93 Difference]: Finished difference Result 24575 states and 37748 transitions. [2020-07-20 12:36:31,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 12:36:31,860 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 329 [2020-07-20 12:36:31,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 12:36:31,897 INFO L225 Difference]: With dead ends: 24575 [2020-07-20 12:36:31,898 INFO L226 Difference]: Without dead ends: 16365 [2020-07-20 12:36:31,915 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 327 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 12:36:31,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16365 states. [2020-07-20 12:36:32,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16365 to 16182. [2020-07-20 12:36:32,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16182 states. [2020-07-20 12:36:32,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16182 states to 16182 states and 24787 transitions. [2020-07-20 12:36:32,424 INFO L78 Accepts]: Start accepts. Automaton has 16182 states and 24787 transitions. Word has length 329 [2020-07-20 12:36:32,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 12:36:32,425 INFO L479 AbstractCegarLoop]: Abstraction has 16182 states and 24787 transitions. [2020-07-20 12:36:32,425 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 12:36:32,425 INFO L276 IsEmpty]: Start isEmpty. Operand 16182 states and 24787 transitions. [2020-07-20 12:36:32,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2020-07-20 12:36:32,455 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 12:36:32,455 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 12:36:32,668 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 12:36:32,670 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 12:36:32,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 12:36:32,670 INFO L82 PathProgramCache]: Analyzing trace with hash -640191760, now seen corresponding path program 1 times [2020-07-20 12:36:32,671 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 12:36:32,671 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1063104410] [2020-07-20 12:36:32,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 12:36:33,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 12:36:33,209 INFO L263 TraceCheckSpWp]: Trace formula consists of 2214 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-20 12:36:33,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 12:36:33,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 12:36:33,316 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 12:36:33,316 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1063104410] [2020-07-20 12:36:33,316 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 12:36:33,317 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 12:36:33,317 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176079512] [2020-07-20 12:36:33,318 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 12:36:33,318 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 12:36:33,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 12:36:33,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 12:36:33,319 INFO L87 Difference]: Start difference. First operand 16182 states and 24787 transitions. Second operand 3 states. [2020-07-20 12:36:34,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 12:36:34,619 INFO L93 Difference]: Finished difference Result 48451 states and 74207 transitions. [2020-07-20 12:36:34,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 12:36:34,619 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 330 [2020-07-20 12:36:34,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 12:36:34,677 INFO L225 Difference]: With dead ends: 48451 [2020-07-20 12:36:34,677 INFO L226 Difference]: Without dead ends: 32319 [2020-07-20 12:36:34,707 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 328 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 12:36:34,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32319 states. [2020-07-20 12:36:35,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32319 to 16198. [2020-07-20 12:36:35,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16198 states. [2020-07-20 12:36:35,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16198 states to 16198 states and 24806 transitions. [2020-07-20 12:36:35,350 INFO L78 Accepts]: Start accepts. Automaton has 16198 states and 24806 transitions. Word has length 330 [2020-07-20 12:36:35,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 12:36:35,350 INFO L479 AbstractCegarLoop]: Abstraction has 16198 states and 24806 transitions. [2020-07-20 12:36:35,351 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 12:36:35,351 INFO L276 IsEmpty]: Start isEmpty. Operand 16198 states and 24806 transitions. [2020-07-20 12:36:35,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2020-07-20 12:36:35,372 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 12:36:35,373 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] [2020-07-20 12:36:35,586 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 12:36:35,587 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 12:36:35,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 12:36:35,587 INFO L82 PathProgramCache]: Analyzing trace with hash -1028005055, now seen corresponding path program 1 times [2020-07-20 12:36:35,588 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 12:36:35,588 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [849532329] [2020-07-20 12:36:35,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 12:36:35,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 12:36:36,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 2214 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-20 12:36:36,006 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 12:36:36,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 12:36:36,103 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 12:36:36,104 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [849532329] [2020-07-20 12:36:36,104 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 12:36:36,104 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 12:36:36,105 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122013232] [2020-07-20 12:36:36,105 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 12:36:36,106 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 12:36:36,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 12:36:36,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 12:36:36,106 INFO L87 Difference]: Start difference. First operand 16198 states and 24806 transitions. Second operand 3 states. [2020-07-20 12:36:36,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 12:36:36,821 INFO L93 Difference]: Finished difference Result 45958 states and 70247 transitions. [2020-07-20 12:36:36,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 12:36:36,821 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 331 [2020-07-20 12:36:36,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 12:36:36,861 INFO L225 Difference]: With dead ends: 45958 [2020-07-20 12:36:36,861 INFO L226 Difference]: Without dead ends: 29957 [2020-07-20 12:36:36,900 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 329 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 12:36:36,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29957 states. [2020-07-20 12:36:37,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29957 to 29782. [2020-07-20 12:36:37,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29782 states. [2020-07-20 12:36:37,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29782 states to 29782 states and 45318 transitions. [2020-07-20 12:36:37,909 INFO L78 Accepts]: Start accepts. Automaton has 29782 states and 45318 transitions. Word has length 331 [2020-07-20 12:36:37,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 12:36:37,909 INFO L479 AbstractCegarLoop]: Abstraction has 29782 states and 45318 transitions. [2020-07-20 12:36:37,909 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 12:36:37,909 INFO L276 IsEmpty]: Start isEmpty. Operand 29782 states and 45318 transitions. [2020-07-20 12:36:37,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2020-07-20 12:36:37,940 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 12:36:37,940 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] [2020-07-20 12:36:38,145 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 12:36:38,145 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 12:36:38,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 12:36:38,146 INFO L82 PathProgramCache]: Analyzing trace with hash -875950076, now seen corresponding path program 1 times [2020-07-20 12:36:38,147 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 12:36:38,147 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1476575734] [2020-07-20 12:36:38,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 12:36:38,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 12:36:38,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 2215 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-20 12:36:38,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 12:36:38,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 12:36:38,648 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 12:36:38,648 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1476575734] [2020-07-20 12:36:38,649 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 12:36:38,649 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 12:36:38,649 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754738624] [2020-07-20 12:36:38,650 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 12:36:38,650 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 12:36:38,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 12:36:38,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 12:36:38,651 INFO L87 Difference]: Start difference. First operand 29782 states and 45318 transitions. Second operand 4 states. [2020-07-20 12:36:40,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 12:36:40,504 INFO L93 Difference]: Finished difference Result 86596 states and 131549 transitions. [2020-07-20 12:36:40,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 12:36:40,505 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 331 [2020-07-20 12:36:40,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 12:36:40,580 INFO L225 Difference]: With dead ends: 86596 [2020-07-20 12:36:40,581 INFO L226 Difference]: Without dead ends: 57320 [2020-07-20 12:36:40,628 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 328 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-20 12:36:40,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57320 states. [2020-07-20 12:36:41,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57320 to 30031. [2020-07-20 12:36:41,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30031 states. [2020-07-20 12:36:41,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30031 states to 30031 states and 45737 transitions. [2020-07-20 12:36:41,746 INFO L78 Accepts]: Start accepts. Automaton has 30031 states and 45737 transitions. Word has length 331 [2020-07-20 12:36:41,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 12:36:41,747 INFO L479 AbstractCegarLoop]: Abstraction has 30031 states and 45737 transitions. [2020-07-20 12:36:41,747 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 12:36:41,747 INFO L276 IsEmpty]: Start isEmpty. Operand 30031 states and 45737 transitions. [2020-07-20 12:36:41,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2020-07-20 12:36:41,770 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 12:36:41,770 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 12:36:41,971 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 12:36:41,971 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 12:36:41,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 12:36:41,972 INFO L82 PathProgramCache]: Analyzing trace with hash 98122712, now seen corresponding path program 1 times [2020-07-20 12:36:41,972 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 12:36:41,973 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [15549558] [2020-07-20 12:36:41,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 12:36:42,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 12:36:42,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 2230 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-20 12:36:42,404 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 12:36:42,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 12:36:42,648 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 12:36:42,648 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [15549558] [2020-07-20 12:36:42,649 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 12:36:42,649 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-07-20 12:36:42,649 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738775993] [2020-07-20 12:36:42,650 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-20 12:36:42,650 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 12:36:42,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-20 12:36:42,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-07-20 12:36:42,651 INFO L87 Difference]: Start difference. First operand 30031 states and 45737 transitions. Second operand 8 states. [2020-07-20 12:36:48,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 12:36:48,885 INFO L93 Difference]: Finished difference Result 98951 states and 152940 transitions. [2020-07-20 12:36:48,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-07-20 12:36:48,885 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 333 [2020-07-20 12:36:48,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 12:36:48,964 INFO L225 Difference]: With dead ends: 98951 [2020-07-20 12:36:48,965 INFO L226 Difference]: Without dead ends: 70955 [2020-07-20 12:36:49,010 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 340 GetRequests, 326 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=154, Unknown=0, NotChecked=0, Total=240 [2020-07-20 12:36:49,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70955 states. [2020-07-20 12:36:50,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70955 to 44723. [2020-07-20 12:36:50,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44723 states. [2020-07-20 12:36:50,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44723 states to 44723 states and 67765 transitions. [2020-07-20 12:36:50,783 INFO L78 Accepts]: Start accepts. Automaton has 44723 states and 67765 transitions. Word has length 333 [2020-07-20 12:36:50,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 12:36:50,784 INFO L479 AbstractCegarLoop]: Abstraction has 44723 states and 67765 transitions. [2020-07-20 12:36:50,784 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-20 12:36:50,784 INFO L276 IsEmpty]: Start isEmpty. Operand 44723 states and 67765 transitions. [2020-07-20 12:36:50,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2020-07-20 12:36:50,815 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 12:36:50,815 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 12:36:51,025 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 12:36:51,027 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 12:36:51,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 12:36:51,028 INFO L82 PathProgramCache]: Analyzing trace with hash -1246728607, now seen corresponding path program 1 times [2020-07-20 12:36:51,028 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 12:36:51,028 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [374179823] [2020-07-20 12:36:51,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 12:36:51,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 12:36:51,414 INFO L263 TraceCheckSpWp]: Trace formula consists of 2223 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-20 12:36:51,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 12:36:51,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 12:36:51,719 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 12:36:51,719 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [374179823] [2020-07-20 12:36:51,720 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 12:36:51,720 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 12:36:51,720 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944871997] [2020-07-20 12:36:51,721 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 12:36:51,721 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 12:36:51,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 12:36:51,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 12:36:51,725 INFO L87 Difference]: Start difference. First operand 44723 states and 67765 transitions. Second operand 3 states. [2020-07-20 12:36:54,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 12:36:54,978 INFO L93 Difference]: Finished difference Result 105985 states and 161043 transitions. [2020-07-20 12:36:54,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 12:36:54,978 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 333 [2020-07-20 12:36:54,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 12:36:55,043 INFO L225 Difference]: With dead ends: 105985 [2020-07-20 12:36:55,043 INFO L226 Difference]: Without dead ends: 63017 [2020-07-20 12:36:55,075 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 331 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 12:36:55,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63017 states. [2020-07-20 12:36:57,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63017 to 52835. [2020-07-20 12:36:57,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52835 states. [2020-07-20 12:36:57,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52835 states to 52835 states and 80787 transitions. [2020-07-20 12:36:57,126 INFO L78 Accepts]: Start accepts. Automaton has 52835 states and 80787 transitions. Word has length 333 [2020-07-20 12:36:57,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 12:36:57,126 INFO L479 AbstractCegarLoop]: Abstraction has 52835 states and 80787 transitions. [2020-07-20 12:36:57,126 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 12:36:57,126 INFO L276 IsEmpty]: Start isEmpty. Operand 52835 states and 80787 transitions. [2020-07-20 12:36:57,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2020-07-20 12:36:57,157 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 12:36:57,157 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 12:36:57,369 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 12:36:57,370 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 12:36:57,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 12:36:57,371 INFO L82 PathProgramCache]: Analyzing trace with hash 528038592, now seen corresponding path program 1 times [2020-07-20 12:36:57,372 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 12:36:57,372 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1875041025] [2020-07-20 12:36:57,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 12:36:57,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 12:36:57,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 2220 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-20 12:36:57,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 12:36:57,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 12:36:57,877 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 12:36:57,878 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1875041025] [2020-07-20 12:36:57,878 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 12:36:57,878 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 12:36:57,878 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072142701] [2020-07-20 12:36:57,879 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 12:36:57,879 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 12:36:57,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 12:36:57,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 12:36:57,880 INFO L87 Difference]: Start difference. First operand 52835 states and 80787 transitions. Second operand 3 states. [2020-07-20 12:37:03,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 12:37:03,283 INFO L93 Difference]: Finished difference Result 156993 states and 239712 transitions. [2020-07-20 12:37:03,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 12:37:03,284 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 333 [2020-07-20 12:37:03,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 12:37:03,393 INFO L225 Difference]: With dead ends: 156993 [2020-07-20 12:37:03,394 INFO L226 Difference]: Without dead ends: 104921 [2020-07-20 12:37:03,434 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 331 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 12:37:03,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104921 states. [2020-07-20 12:37:05,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104921 to 52939. [2020-07-20 12:37:05,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52939 states. [2020-07-20 12:37:05,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52939 states to 52939 states and 80923 transitions. [2020-07-20 12:37:05,965 INFO L78 Accepts]: Start accepts. Automaton has 52939 states and 80923 transitions. Word has length 333 [2020-07-20 12:37:05,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 12:37:05,965 INFO L479 AbstractCegarLoop]: Abstraction has 52939 states and 80923 transitions. [2020-07-20 12:37:05,965 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 12:37:05,965 INFO L276 IsEmpty]: Start isEmpty. Operand 52939 states and 80923 transitions. [2020-07-20 12:37:05,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2020-07-20 12:37:05,989 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 12:37:05,989 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 12:37:06,196 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 12:37:06,196 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 12:37:06,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 12:37:06,197 INFO L82 PathProgramCache]: Analyzing trace with hash 1466989503, now seen corresponding path program 1 times [2020-07-20 12:37:06,197 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 12:37:06,198 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1040217994] [2020-07-20 12:37:06,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 12:37:06,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 12:37:06,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 2221 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-20 12:37:06,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 12:37:06,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 12:37:06,669 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 12:37:06,669 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1040217994] [2020-07-20 12:37:06,669 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 12:37:06,670 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 12:37:06,670 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374656613] [2020-07-20 12:37:06,670 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 12:37:06,671 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 12:37:06,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 12:37:06,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 12:37:06,672 INFO L87 Difference]: Start difference. First operand 52939 states and 80923 transitions. Second operand 3 states. [2020-07-20 12:37:12,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 12:37:12,364 INFO L93 Difference]: Finished difference Result 157126 states and 239877 transitions. [2020-07-20 12:37:12,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 12:37:12,364 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 334 [2020-07-20 12:37:12,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 12:37:12,479 INFO L225 Difference]: With dead ends: 157126 [2020-07-20 12:37:12,479 INFO L226 Difference]: Without dead ends: 105041 [2020-07-20 12:37:12,521 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 333 GetRequests, 332 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 12:37:12,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105041 states. [2020-07-20 12:37:15,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105041 to 53081. [2020-07-20 12:37:15,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53081 states. [2020-07-20 12:37:15,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53081 states to 53081 states and 81094 transitions. [2020-07-20 12:37:15,161 INFO L78 Accepts]: Start accepts. Automaton has 53081 states and 81094 transitions. Word has length 334 [2020-07-20 12:37:15,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 12:37:15,161 INFO L479 AbstractCegarLoop]: Abstraction has 53081 states and 81094 transitions. [2020-07-20 12:37:15,161 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 12:37:15,161 INFO L276 IsEmpty]: Start isEmpty. Operand 53081 states and 81094 transitions. [2020-07-20 12:37:15,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2020-07-20 12:37:15,185 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 12:37:15,185 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] [2020-07-20 12:37:15,385 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 12:37:15,386 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 12:37:15,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 12:37:15,387 INFO L82 PathProgramCache]: Analyzing trace with hash -1049217384, now seen corresponding path program 1 times [2020-07-20 12:37:15,387 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 12:37:15,388 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1427637714] [2020-07-20 12:37:15,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 12:37:15,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 12:37:15,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 2226 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-20 12:37:15,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 12:37:15,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 12:37:15,880 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 12:37:15,880 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1427637714] [2020-07-20 12:37:15,880 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 12:37:15,880 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 12:37:15,881 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686097629] [2020-07-20 12:37:15,881 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 12:37:15,881 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 12:37:15,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 12:37:15,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 12:37:15,882 INFO L87 Difference]: Start difference. First operand 53081 states and 81094 transitions. Second operand 3 states. [2020-07-20 12:37:19,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 12:37:19,781 INFO L93 Difference]: Finished difference Result 139211 states and 214132 transitions. [2020-07-20 12:37:19,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 12:37:19,781 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 335 [2020-07-20 12:37:19,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 12:37:19,878 INFO L225 Difference]: With dead ends: 139211 [2020-07-20 12:37:19,878 INFO L226 Difference]: Without dead ends: 88279 [2020-07-20 12:37:19,923 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 333 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 12:37:19,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88279 states. [2020-07-20 12:37:23,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88279 to 72777. [2020-07-20 12:37:23,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72777 states. [2020-07-20 12:37:23,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72777 states to 72777 states and 112412 transitions. [2020-07-20 12:37:23,616 INFO L78 Accepts]: Start accepts. Automaton has 72777 states and 112412 transitions. Word has length 335 [2020-07-20 12:37:23,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 12:37:23,616 INFO L479 AbstractCegarLoop]: Abstraction has 72777 states and 112412 transitions. [2020-07-20 12:37:23,616 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 12:37:23,616 INFO L276 IsEmpty]: Start isEmpty. Operand 72777 states and 112412 transitions. [2020-07-20 12:37:23,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2020-07-20 12:37:23,642 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 12:37:23,643 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] [2020-07-20 12:37:25,494 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 12:37:25,495 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 12:37:25,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 12:37:25,496 INFO L82 PathProgramCache]: Analyzing trace with hash -94453587, now seen corresponding path program 1 times [2020-07-20 12:37:25,496 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 12:37:25,497 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [885491345] [2020-07-20 12:37:25,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 12:37:25,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 12:37:25,912 INFO L263 TraceCheckSpWp]: Trace formula consists of 2222 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-20 12:37:25,916 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 12:37:25,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 12:37:25,969 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 12:37:25,969 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [885491345] [2020-07-20 12:37:25,969 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 12:37:25,970 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 12:37:25,970 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83945034] [2020-07-20 12:37:25,970 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 12:37:25,971 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 12:37:25,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 12:37:25,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 12:37:25,971 INFO L87 Difference]: Start difference. First operand 72777 states and 112412 transitions. Second operand 4 states. [2020-07-20 12:37:29,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 12:37:29,074 INFO L93 Difference]: Finished difference Result 141287 states and 218067 transitions. [2020-07-20 12:37:29,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 12:37:29,075 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 335 [2020-07-20 12:37:29,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 12:37:29,153 INFO L225 Difference]: With dead ends: 141287 [2020-07-20 12:37:29,154 INFO L226 Difference]: Without dead ends: 69486 [2020-07-20 12:37:29,206 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 335 GetRequests, 332 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-20 12:37:29,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69486 states. [2020-07-20 12:37:32,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69486 to 69444. [2020-07-20 12:37:32,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69444 states. [2020-07-20 12:37:32,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69444 states to 69444 states and 107189 transitions. [2020-07-20 12:37:32,603 INFO L78 Accepts]: Start accepts. Automaton has 69444 states and 107189 transitions. Word has length 335 [2020-07-20 12:37:32,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 12:37:32,603 INFO L479 AbstractCegarLoop]: Abstraction has 69444 states and 107189 transitions. [2020-07-20 12:37:32,604 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 12:37:32,604 INFO L276 IsEmpty]: Start isEmpty. Operand 69444 states and 107189 transitions. [2020-07-20 12:37:32,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2020-07-20 12:37:32,628 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 12:37:32,629 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] [2020-07-20 12:37:32,829 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 12:37:32,830 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 12:37:32,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 12:37:32,831 INFO L82 PathProgramCache]: Analyzing trace with hash -293223062, now seen corresponding path program 1 times [2020-07-20 12:37:32,831 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 12:37:32,831 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [632561918] [2020-07-20 12:37:32,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 12:37:33,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 12:37:33,255 INFO L263 TraceCheckSpWp]: Trace formula consists of 2231 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 12:37:33,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 12:37:33,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 12:37:33,375 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 12:37:33,375 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [632561918] [2020-07-20 12:37:33,376 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 12:37:33,376 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 12:37:33,376 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789628075] [2020-07-20 12:37:33,377 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 12:37:33,377 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 12:37:33,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 12:37:33,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-20 12:37:33,377 INFO L87 Difference]: Start difference. First operand 69444 states and 107189 transitions. Second operand 5 states. [2020-07-20 12:37:39,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 12:37:39,159 INFO L93 Difference]: Finished difference Result 137127 states and 211655 transitions. [2020-07-20 12:37:39,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 12:37:39,159 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 336 [2020-07-20 12:37:39,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 12:37:39,229 INFO L225 Difference]: With dead ends: 137127 [2020-07-20 12:37:39,229 INFO L226 Difference]: Without dead ends: 69444 [2020-07-20 12:37:39,275 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 332 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-07-20 12:37:39,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69444 states. [2020-07-20 12:37:42,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69444 to 69444. [2020-07-20 12:37:42,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69444 states. [2020-07-20 12:37:42,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69444 states to 69444 states and 106275 transitions. [2020-07-20 12:37:42,675 INFO L78 Accepts]: Start accepts. Automaton has 69444 states and 106275 transitions. Word has length 336 [2020-07-20 12:37:42,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 12:37:42,676 INFO L479 AbstractCegarLoop]: Abstraction has 69444 states and 106275 transitions. [2020-07-20 12:37:42,676 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 12:37:42,676 INFO L276 IsEmpty]: Start isEmpty. Operand 69444 states and 106275 transitions. [2020-07-20 12:37:42,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2020-07-20 12:37:42,699 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 12:37:42,699 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] [2020-07-20 12:37:42,910 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 12:37:42,911 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 12:37:42,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 12:37:42,912 INFO L82 PathProgramCache]: Analyzing trace with hash -740742865, now seen corresponding path program 1 times [2020-07-20 12:37:42,912 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 12:37:42,912 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1405949550] [2020-07-20 12:37:42,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 12:37:43,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 12:37:43,333 INFO L263 TraceCheckSpWp]: Trace formula consists of 2232 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 12:37:43,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 12:37:43,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 12:37:43,454 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 12:37:43,454 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1405949550] [2020-07-20 12:37:43,454 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 12:37:43,455 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 12:37:43,455 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93633794] [2020-07-20 12:37:43,455 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 12:37:43,455 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 12:37:43,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 12:37:43,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 12:37:43,456 INFO L87 Difference]: Start difference. First operand 69444 states and 106275 transitions. Second operand 4 states. [2020-07-20 12:37:50,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 12:37:50,831 INFO L93 Difference]: Finished difference Result 205417 states and 314417 transitions. [2020-07-20 12:37:50,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 12:37:50,831 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 336 [2020-07-20 12:37:50,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 12:37:50,989 INFO L225 Difference]: With dead ends: 205417 [2020-07-20 12:37:50,989 INFO L226 Difference]: Without dead ends: 136308 [2020-07-20 12:37:51,046 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 333 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-20 12:37:51,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136308 states. [2020-07-20 12:38:00,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136308 to 135933. [2020-07-20 12:38:00,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135933 states. [2020-07-20 12:38:01,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135933 states to 135933 states and 207381 transitions. [2020-07-20 12:38:01,153 INFO L78 Accepts]: Start accepts. Automaton has 135933 states and 207381 transitions. Word has length 336 [2020-07-20 12:38:01,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 12:38:01,154 INFO L479 AbstractCegarLoop]: Abstraction has 135933 states and 207381 transitions. [2020-07-20 12:38:01,154 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 12:38:01,154 INFO L276 IsEmpty]: Start isEmpty. Operand 135933 states and 207381 transitions. [2020-07-20 12:38:01,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2020-07-20 12:38:01,203 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 12:38:01,204 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] [2020-07-20 12:38:01,404 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 12:38:01,405 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 12:38:01,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 12:38:01,405 INFO L82 PathProgramCache]: Analyzing trace with hash -1957003307, now seen corresponding path program 1 times [2020-07-20 12:38:01,405 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 12:38:01,406 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [784977541] [2020-07-20 12:38:01,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 12:38:01,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 12:38:01,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 2235 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-20 12:38:01,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 12:38:01,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 12:38:01,921 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 12:38:01,921 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [784977541] [2020-07-20 12:38:01,922 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 12:38:01,922 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 12:38:01,922 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651231204] [2020-07-20 12:38:01,923 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 12:38:01,923 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 12:38:01,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 12:38:01,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 12:38:01,923 INFO L87 Difference]: Start difference. First operand 135933 states and 207381 transitions. Second operand 3 states. [2020-07-20 12:38:19,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 12:38:19,003 INFO L93 Difference]: Finished difference Result 400146 states and 610311 transitions. [2020-07-20 12:38:19,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 12:38:19,003 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 338 [2020-07-20 12:38:19,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 12:38:19,468 INFO L225 Difference]: With dead ends: 400146 [2020-07-20 12:38:19,468 INFO L226 Difference]: Without dead ends: 265601 [2020-07-20 12:38:19,569 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 337 GetRequests, 336 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 12:38:19,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265601 states. [2020-07-20 12:38:38,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265601 to 265226. [2020-07-20 12:38:38,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 265226 states. [2020-07-20 12:38:38,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265226 states to 265226 states and 402919 transitions. [2020-07-20 12:38:38,782 INFO L78 Accepts]: Start accepts. Automaton has 265226 states and 402919 transitions. Word has length 338 [2020-07-20 12:38:38,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 12:38:38,782 INFO L479 AbstractCegarLoop]: Abstraction has 265226 states and 402919 transitions. [2020-07-20 12:38:38,782 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 12:38:38,782 INFO L276 IsEmpty]: Start isEmpty. Operand 265226 states and 402919 transitions. [2020-07-20 12:38:38,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2020-07-20 12:38:38,878 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 12:38:38,879 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 12:38:39,084 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 12:38:39,085 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 12:38:39,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 12:38:39,086 INFO L82 PathProgramCache]: Analyzing trace with hash -1315327565, now seen corresponding path program 1 times [2020-07-20 12:38:39,086 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 12:38:39,087 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1598580613] [2020-07-20 12:38:39,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 12:38:39,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 12:38:39,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 2237 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-20 12:38:39,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 12:38:39,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 12:38:39,563 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 12:38:39,563 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1598580613] [2020-07-20 12:38:39,563 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 12:38:39,564 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 12:38:39,564 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092850264] [2020-07-20 12:38:39,564 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 12:38:39,564 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 12:38:39,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 12:38:39,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 12:38:39,565 INFO L87 Difference]: Start difference. First operand 265226 states and 402919 transitions. Second operand 3 states. [2020-07-20 12:39:05,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 12:39:05,920 INFO L93 Difference]: Finished difference Result 594198 states and 900009 transitions. [2020-07-20 12:39:05,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 12:39:05,921 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 339 [2020-07-20 12:39:05,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 12:39:06,882 INFO L225 Difference]: With dead ends: 594198 [2020-07-20 12:39:06,882 INFO L226 Difference]: Without dead ends: 406908 [2020-07-20 12:39:07,046 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 337 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 12:39:07,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406908 states. [2020-07-20 12:39:30,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406908 to 264969. [2020-07-20 12:39:30,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 264969 states. [2020-07-20 12:39:31,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264969 states to 264969 states and 402483 transitions. [2020-07-20 12:39:31,349 INFO L78 Accepts]: Start accepts. Automaton has 264969 states and 402483 transitions. Word has length 339 [2020-07-20 12:39:31,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 12:39:31,349 INFO L479 AbstractCegarLoop]: Abstraction has 264969 states and 402483 transitions. [2020-07-20 12:39:31,350 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 12:39:31,350 INFO L276 IsEmpty]: Start isEmpty. Operand 264969 states and 402483 transitions. [2020-07-20 12:39:31,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2020-07-20 12:39:31,455 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 12:39:31,456 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 12:39:31,656 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 12:39:31,657 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 12:39:31,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 12:39:31,658 INFO L82 PathProgramCache]: Analyzing trace with hash 699448139, now seen corresponding path program 1 times [2020-07-20 12:39:31,658 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 12:39:31,658 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1209764672] [2020-07-20 12:39:31,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 12:39:32,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 12:39:32,076 INFO L263 TraceCheckSpWp]: Trace formula consists of 2236 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-20 12:39:32,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 12:39:32,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 12:39:32,660 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 12:39:32,660 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1209764672] [2020-07-20 12:39:32,660 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 12:39:32,660 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-07-20 12:39:32,660 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695403091] [2020-07-20 12:39:32,661 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-20 12:39:32,661 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 12:39:32,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-20 12:39:32,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-07-20 12:39:32,662 INFO L87 Difference]: Start difference. First operand 264969 states and 402483 transitions. Second operand 8 states. [2020-07-20 12:40:18,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 12:40:18,498 INFO L93 Difference]: Finished difference Result 726059 states and 1111089 transitions. [2020-07-20 12:40:18,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-07-20 12:40:18,498 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 339 [2020-07-20 12:40:18,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 12:40:19,298 INFO L225 Difference]: With dead ends: 726059 [2020-07-20 12:40:19,298 INFO L226 Difference]: Without dead ends: 608648 [2020-07-20 12:40:19,455 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 346 GetRequests, 332 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=154, Unknown=0, NotChecked=0, Total=240 [2020-07-20 12:40:19,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608648 states. [2020-07-20 12:40:51,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608648 to 335545. [2020-07-20 12:40:51,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 335545 states. [2020-07-20 12:40:52,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335545 states to 335545 states and 509727 transitions. [2020-07-20 12:40:52,477 INFO L78 Accepts]: Start accepts. Automaton has 335545 states and 509727 transitions. Word has length 339 [2020-07-20 12:40:52,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 12:40:52,478 INFO L479 AbstractCegarLoop]: Abstraction has 335545 states and 509727 transitions. [2020-07-20 12:40:52,478 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-20 12:40:52,478 INFO L276 IsEmpty]: Start isEmpty. Operand 335545 states and 509727 transitions. [2020-07-20 12:40:52,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2020-07-20 12:40:52,584 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 12:40:52,585 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] [2020-07-20 12:40:52,785 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 12:40:52,786 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 12:40:52,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 12:40:52,786 INFO L82 PathProgramCache]: Analyzing trace with hash -461676378, now seen corresponding path program 1 times [2020-07-20 12:40:52,787 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 12:40:52,787 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [903109513] [2020-07-20 12:40:52,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 12:40:53,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 12:40:53,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 2233 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-20 12:40:53,220 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 12:40:53,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 12:40:53,786 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 12:40:53,786 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [903109513] [2020-07-20 12:40:53,786 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 12:40:53,786 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 12:40:53,787 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280451367] [2020-07-20 12:40:53,787 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 12:40:53,787 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 12:40:53,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 12:40:53,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 12:40:53,788 INFO L87 Difference]: Start difference. First operand 335545 states and 509727 transitions. Second operand 3 states. [2020-07-20 12:41:43,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 12:41:43,904 INFO L93 Difference]: Finished difference Result 993822 states and 1507527 transitions. [2020-07-20 12:41:43,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 12:41:43,904 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 339 [2020-07-20 12:41:43,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 12:41:44,923 INFO L225 Difference]: With dead ends: 993822 [2020-07-20 12:41:44,923 INFO L226 Difference]: Without dead ends: 658885 [2020-07-20 12:41:45,192 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 337 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 12:41:45,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658885 states. [2020-07-20 12:42:42,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658885 to 658390. [2020-07-20 12:42:42,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 658390 states. [2020-07-20 12:42:43,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 658390 states to 658390 states and 993611 transitions. [2020-07-20 12:42:43,975 INFO L78 Accepts]: Start accepts. Automaton has 658390 states and 993611 transitions. Word has length 339 [2020-07-20 12:42:43,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 12:42:43,975 INFO L479 AbstractCegarLoop]: Abstraction has 658390 states and 993611 transitions. [2020-07-20 12:42:43,975 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 12:42:43,975 INFO L276 IsEmpty]: Start isEmpty. Operand 658390 states and 993611 transitions. [2020-07-20 12:42:44,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2020-07-20 12:42:44,210 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 12:42:44,210 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 12:42:44,411 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 12:42:44,411 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 12:42:44,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 12:42:44,412 INFO L82 PathProgramCache]: Analyzing trace with hash -165106685, now seen corresponding path program 1 times [2020-07-20 12:42:44,413 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 12:42:44,413 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [883286607] [2020-07-20 12:42:44,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 12:42:44,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 12:42:44,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 2234 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-20 12:42:44,838 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 12:42:44,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 12:42:44,896 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 12:42:44,896 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [883286607] [2020-07-20 12:42:44,896 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 12:42:44,897 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 12:42:44,897 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339848284] [2020-07-20 12:42:44,897 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 12:42:44,897 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 12:42:44,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 12:42:44,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 12:42:44,898 INFO L87 Difference]: Start difference. First operand 658390 states and 993611 transitions. Second operand 3 states. [2020-07-20 12:44:11,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 12:44:11,947 INFO L93 Difference]: Finished difference Result 1631318 states and 2481514 transitions. [2020-07-20 12:44:11,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 12:44:11,947 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 339 [2020-07-20 12:44:11,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 12:44:13,452 INFO L225 Difference]: With dead ends: 1631318 [2020-07-20 12:44:13,452 INFO L226 Difference]: Without dead ends: 986931 [2020-07-20 12:44:13,898 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 337 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 12:44:14,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 986931 states. [2020-07-20 12:45:52,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 986931 to 927238. [2020-07-20 12:45:52,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 927238 states. [2020-07-20 12:45:55,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 927238 states to 927238 states and 1410279 transitions. [2020-07-20 12:45:55,134 INFO L78 Accepts]: Start accepts. Automaton has 927238 states and 1410279 transitions. Word has length 339 [2020-07-20 12:45:55,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 12:45:55,134 INFO L479 AbstractCegarLoop]: Abstraction has 927238 states and 1410279 transitions. [2020-07-20 12:45:55,134 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 12:45:55,135 INFO L276 IsEmpty]: Start isEmpty. Operand 927238 states and 1410279 transitions. [2020-07-20 12:45:55,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2020-07-20 12:45:55,378 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 12:45:55,379 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] [2020-07-20 12:45:55,579 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 12:45:55,580 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 12:45:55,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 12:45:55,581 INFO L82 PathProgramCache]: Analyzing trace with hash 145534733, now seen corresponding path program 1 times [2020-07-20 12:45:55,581 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 12:45:55,581 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [951920763] [2020-07-20 12:45:55,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 12:45:56,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 12:45:56,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 2239 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-20 12:45:56,020 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 12:45:56,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 12:45:56,091 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 12:45:56,092 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [951920763] [2020-07-20 12:45:56,092 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 12:45:56,092 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 12:45:56,092 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755358343] [2020-07-20 12:45:56,093 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 12:45:56,093 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 12:45:56,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 12:45:56,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 12:45:56,094 INFO L87 Difference]: Start difference. First operand 927238 states and 1410279 transitions. Second operand 4 states.