/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 SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic NUM_VARIABLES --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 -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 18:35:35,810 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 18:35:35,812 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 18:35:35,827 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 18:35:35,827 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 18:35:35,828 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 18:35:35,830 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 18:35:35,831 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 18:35:35,833 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 18:35:35,834 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 18:35:35,835 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 18:35:35,836 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 18:35:35,836 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 18:35:35,837 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 18:35:35,838 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 18:35:35,840 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 18:35:35,840 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 18:35:35,841 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 18:35:35,843 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 18:35:35,845 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 18:35:35,847 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 18:35:35,848 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 18:35:35,849 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 18:35:35,850 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 18:35:35,852 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 18:35:35,855 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-20 18:35:35,856 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-20 18:35:35,857 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-20 18:35:35,857 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-20 18:35:35,858 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-20 18:35:35,858 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-20 18:35:35,859 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-20 18:35:35,859 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-20 18:35:35,860 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 18:35:35,860 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 18:35:35,861 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 18:35:35,862 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 18:35:35,877 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 18:35:35,877 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 18:35:35,879 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 18:35:35,879 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 18:35:35,879 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 18:35:35,879 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 18:35:35,879 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 18:35:35,880 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 18:35:35,880 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 18:35:35,880 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 18:35:35,880 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 18:35:35,880 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 18:35:35,880 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 18:35:35,881 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 18:35:35,881 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 18:35:35,881 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 18:35:35,881 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 18:35:35,881 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 18:35:35,882 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 18:35:35,882 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 18:35:35,882 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 18:35:35,882 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 18:35:35,882 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 18:35:35,883 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 18:35:35,883 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 18:35:35,883 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 18:35:35,883 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 18:35:35,883 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 18:35:35,884 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 18:35:35,884 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 -> SMT_FEATURE_HEURISTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> NUM_VARIABLES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4 [2020-07-20 18:35:36,189 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 18:35:36,201 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 18:35:36,205 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 18:35:36,206 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 18:35:36,207 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 18:35:36,207 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-07-20 18:35:36,293 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bda82af48/d478ac64d07e4ed89fa428d7b3538613/FLAGffa35b654 [2020-07-20 18:35:37,021 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 18:35:37,022 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-07-20 18:35:37,062 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bda82af48/d478ac64d07e4ed89fa428d7b3538613/FLAGffa35b654 [2020-07-20 18:35:37,093 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bda82af48/d478ac64d07e4ed89fa428d7b3538613 [2020-07-20 18:35:37,104 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 18:35:37,108 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 18:35:37,112 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 18:35:37,112 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 18:35:37,116 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 18:35:37,117 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 06:35:37" (1/1) ... [2020-07-20 18:35:37,120 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@687b19bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:35:37, skipping insertion in model container [2020-07-20 18:35:37,120 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 06:35:37" (1/1) ... [2020-07-20 18:35:37,130 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 18:35:37,272 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 18:35:38,663 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 18:35:38,676 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 18:35:39,570 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 18:35:39,600 INFO L208 MainTranslator]: Completed translation [2020-07-20 18:35:39,600 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:35:39 WrapperNode [2020-07-20 18:35:39,601 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 18:35:39,602 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 18:35:39,602 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 18:35:39,602 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 18:35:39,618 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:35:39" (1/1) ... [2020-07-20 18:35:39,620 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:35:39" (1/1) ... [2020-07-20 18:35:39,678 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:35:39" (1/1) ... [2020-07-20 18:35:39,678 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:35:39" (1/1) ... [2020-07-20 18:35:39,751 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:35:39" (1/1) ... [2020-07-20 18:35:39,784 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:35:39" (1/1) ... [2020-07-20 18:35:39,797 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:35:39" (1/1) ... [2020-07-20 18:35:39,813 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 18:35:39,814 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 18:35:39,814 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 18:35:39,815 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 18:35:39,816 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:35:39" (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 18:35:39,902 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 18:35:39,903 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 18:35:39,903 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-20 18:35:39,903 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 18:35:39,903 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 18:35:39,904 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-07-20 18:35:39,904 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-07-20 18:35:39,904 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-07-20 18:35:39,905 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-07-20 18:35:39,905 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-20 18:35:39,906 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-20 18:35:39,906 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-07-20 18:35:39,906 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-07-20 18:35:39,906 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-07-20 18:35:39,906 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-07-20 18:35:39,907 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-07-20 18:35:39,907 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-07-20 18:35:39,908 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-07-20 18:35:39,908 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-07-20 18:35:39,908 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 18:35:39,909 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 18:35:39,909 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 18:35:43,011 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 18:35:43,011 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-20 18:35:43,022 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 06:35:43 BoogieIcfgContainer [2020-07-20 18:35:43,023 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 18:35:43,024 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 18:35:43,024 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 18:35:43,027 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 18:35:43,028 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 06:35:37" (1/3) ... [2020-07-20 18:35:43,028 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c5883dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 06:35:43, skipping insertion in model container [2020-07-20 18:35:43,029 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:35:39" (2/3) ... [2020-07-20 18:35:43,029 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c5883dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 06:35:43, skipping insertion in model container [2020-07-20 18:35:43,029 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 06:35:43" (3/3) ... [2020-07-20 18:35:43,031 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-07-20 18:35:43,042 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 18:35:43,051 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 12 error locations. [2020-07-20 18:35:43,065 INFO L251 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2020-07-20 18:35:43,092 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 18:35:43,092 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 18:35:43,092 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 18:35:43,093 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 18:35:43,093 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 18:35:43,093 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 18:35:43,093 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 18:35:43,093 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 18:35:43,131 INFO L276 IsEmpty]: Start isEmpty. Operand 1027 states. [2020-07-20 18:35:43,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2020-07-20 18:35:43,161 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 18:35:43,162 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 18:35:43,163 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 18:35:43,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 18:35:43,170 INFO L82 PathProgramCache]: Analyzing trace with hash -537993708, now seen corresponding path program 1 times [2020-07-20 18:35:43,182 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 18:35:43,183 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1299477995] [2020-07-20 18:35:43,183 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) 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 18:35:43,737 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-20 18:35:43,738 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 18:35:43,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 1938 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-20 18:35:43,779 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 18:35:44,100 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 18:35:44,101 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 18:35:44,102 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1299477995] [2020-07-20 18:35:44,103 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 18:35:44,103 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 18:35:44,104 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326895537] [2020-07-20 18:35:44,110 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 18:35:44,110 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 18:35:44,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 18:35:44,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 18:35:44,127 INFO L87 Difference]: Start difference. First operand 1027 states. Second operand 3 states. [2020-07-20 18:35:44,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 18:35:44,437 INFO L93 Difference]: Finished difference Result 1794 states and 3183 transitions. [2020-07-20 18:35:44,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 18:35:44,439 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 327 [2020-07-20 18:35:44,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 18:35:44,468 INFO L225 Difference]: With dead ends: 1794 [2020-07-20 18:35:44,468 INFO L226 Difference]: Without dead ends: 1483 [2020-07-20 18:35:44,476 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 18:35:44,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1483 states. [2020-07-20 18:35:44,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1483 to 1481. [2020-07-20 18:35:44,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1481 states. [2020-07-20 18:35:44,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1481 states to 1481 states and 2263 transitions. [2020-07-20 18:35:44,604 INFO L78 Accepts]: Start accepts. Automaton has 1481 states and 2263 transitions. Word has length 327 [2020-07-20 18:35:44,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 18:35:44,605 INFO L479 AbstractCegarLoop]: Abstraction has 1481 states and 2263 transitions. [2020-07-20 18:35:44,606 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 18:35:44,606 INFO L276 IsEmpty]: Start isEmpty. Operand 1481 states and 2263 transitions. [2020-07-20 18:35:44,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2020-07-20 18:35:44,615 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 18:35:44,615 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 18:35:44,816 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 18:35:44,817 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 18:35:44,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 18:35:44,818 INFO L82 PathProgramCache]: Analyzing trace with hash 297127498, now seen corresponding path program 1 times [2020-07-20 18:35:44,818 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 18:35:44,819 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1108269719] [2020-07-20 18:35:44,819 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) 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 18:35:45,182 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-20 18:35:45,182 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 18:35:45,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 1938 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-20 18:35:45,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 18:35:45,391 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 18:35:45,392 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 18:35:45,393 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1108269719] [2020-07-20 18:35:45,393 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 18:35:45,393 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 18:35:45,394 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969356131] [2020-07-20 18:35:45,403 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 18:35:45,404 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 18:35:45,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 18:35:45,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 18:35:45,405 INFO L87 Difference]: Start difference. First operand 1481 states and 2263 transitions. Second operand 3 states. [2020-07-20 18:35:45,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 18:35:45,684 INFO L93 Difference]: Finished difference Result 2844 states and 4401 transitions. [2020-07-20 18:35:45,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 18:35:45,685 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 327 [2020-07-20 18:35:45,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 18:35:45,700 INFO L225 Difference]: With dead ends: 2844 [2020-07-20 18:35:45,700 INFO L226 Difference]: Without dead ends: 2425 [2020-07-20 18:35:45,705 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 18:35:45,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2425 states. [2020-07-20 18:35:45,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2425 to 2423. [2020-07-20 18:35:45,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2423 states. [2020-07-20 18:35:45,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2423 states to 2423 states and 3727 transitions. [2020-07-20 18:35:45,786 INFO L78 Accepts]: Start accepts. Automaton has 2423 states and 3727 transitions. Word has length 327 [2020-07-20 18:35:45,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 18:35:45,788 INFO L479 AbstractCegarLoop]: Abstraction has 2423 states and 3727 transitions. [2020-07-20 18:35:45,788 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 18:35:45,788 INFO L276 IsEmpty]: Start isEmpty. Operand 2423 states and 3727 transitions. [2020-07-20 18:35:45,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2020-07-20 18:35:45,797 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 18:35:45,798 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 18:35:46,013 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 18:35:46,015 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 18:35:46,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 18:35:46,021 INFO L82 PathProgramCache]: Analyzing trace with hash -586459585, now seen corresponding path program 1 times [2020-07-20 18:35:46,024 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 18:35:46,025 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [292219942] [2020-07-20 18:35:46,027 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) 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 18:35:46,579 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-20 18:35:46,579 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 18:35:46,588 INFO L263 TraceCheckSpWp]: Trace formula consists of 1939 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-20 18:35:46,598 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 18:35:46,707 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 18:35:46,707 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 18:35:46,708 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [292219942] [2020-07-20 18:35:46,708 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 18:35:46,708 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 18:35:46,708 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665848800] [2020-07-20 18:35:46,709 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 18:35:46,710 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 18:35:46,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 18:35:46,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 18:35:46,710 INFO L87 Difference]: Start difference. First operand 2423 states and 3727 transitions. Second operand 3 states. [2020-07-20 18:35:47,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 18:35:47,055 INFO L93 Difference]: Finished difference Result 5038 states and 7854 transitions. [2020-07-20 18:35:47,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 18:35:47,055 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 327 [2020-07-20 18:35:47,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 18:35:47,079 INFO L225 Difference]: With dead ends: 5038 [2020-07-20 18:35:47,079 INFO L226 Difference]: Without dead ends: 4361 [2020-07-20 18:35:47,083 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 18:35:47,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4361 states. [2020-07-20 18:35:47,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4361 to 4359. [2020-07-20 18:35:47,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4359 states. [2020-07-20 18:35:47,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4359 states to 4359 states and 6733 transitions. [2020-07-20 18:35:47,249 INFO L78 Accepts]: Start accepts. Automaton has 4359 states and 6733 transitions. Word has length 327 [2020-07-20 18:35:47,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 18:35:47,250 INFO L479 AbstractCegarLoop]: Abstraction has 4359 states and 6733 transitions. [2020-07-20 18:35:47,250 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 18:35:47,250 INFO L276 IsEmpty]: Start isEmpty. Operand 4359 states and 6733 transitions. [2020-07-20 18:35:47,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2020-07-20 18:35:47,261 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 18:35:47,261 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 18:35:47,474 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 18:35:47,475 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 18:35:47,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 18:35:47,476 INFO L82 PathProgramCache]: Analyzing trace with hash -586798209, now seen corresponding path program 1 times [2020-07-20 18:35:47,477 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 18:35:47,477 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [34997419] [2020-07-20 18:35:47,478 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) 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 18:35:47,902 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 18:35:47,902 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 18:35:47,910 INFO L263 TraceCheckSpWp]: Trace formula consists of 2072 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 18:35:47,917 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 18:35:48,088 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 18:35:48,088 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 18:35:48,089 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [34997419] [2020-07-20 18:35:48,089 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 18:35:48,089 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 18:35:48,089 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246129634] [2020-07-20 18:35:48,090 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 18:35:48,091 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 18:35:48,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 18:35:48,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 18:35:48,091 INFO L87 Difference]: Start difference. First operand 4359 states and 6733 transitions. Second operand 4 states. [2020-07-20 18:35:48,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 18:35:48,493 INFO L93 Difference]: Finished difference Result 12856 states and 19826 transitions. [2020-07-20 18:35:48,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 18:35:48,494 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 327 [2020-07-20 18:35:48,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 18:35:48,537 INFO L225 Difference]: With dead ends: 12856 [2020-07-20 18:35:48,537 INFO L226 Difference]: Without dead ends: 8550 [2020-07-20 18:35:48,550 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 18:35:48,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8550 states. [2020-07-20 18:35:48,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8550 to 8343. [2020-07-20 18:35:48,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8343 states. [2020-07-20 18:35:48,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8343 states to 8343 states and 12856 transitions. [2020-07-20 18:35:48,941 INFO L78 Accepts]: Start accepts. Automaton has 8343 states and 12856 transitions. Word has length 327 [2020-07-20 18:35:48,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 18:35:48,942 INFO L479 AbstractCegarLoop]: Abstraction has 8343 states and 12856 transitions. [2020-07-20 18:35:48,942 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 18:35:48,943 INFO L276 IsEmpty]: Start isEmpty. Operand 8343 states and 12856 transitions. [2020-07-20 18:35:48,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2020-07-20 18:35:48,965 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 18:35:48,965 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 18:35:49,178 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 18:35:49,179 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 18:35:49,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 18:35:49,180 INFO L82 PathProgramCache]: Analyzing trace with hash 1249265655, now seen corresponding path program 1 times [2020-07-20 18:35:49,180 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 18:35:49,180 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [685272558] [2020-07-20 18:35:49,180 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) 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 18:35:49,655 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 18:35:49,655 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 18:35:49,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 2077 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-20 18:35:49,670 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 18:35:49,782 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 18:35:49,782 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 18:35:49,783 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [685272558] [2020-07-20 18:35:49,783 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 18:35:49,783 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 18:35:49,783 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995828147] [2020-07-20 18:35:49,784 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 18:35:49,784 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 18:35:49,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 18:35:49,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 18:35:49,785 INFO L87 Difference]: Start difference. First operand 8343 states and 12856 transitions. Second operand 3 states. [2020-07-20 18:35:50,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 18:35:50,504 INFO L93 Difference]: Finished difference Result 24503 states and 37668 transitions. [2020-07-20 18:35:50,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 18:35:50,505 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 329 [2020-07-20 18:35:50,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 18:35:50,591 INFO L225 Difference]: With dead ends: 24503 [2020-07-20 18:35:50,592 INFO L226 Difference]: Without dead ends: 16289 [2020-07-20 18:35:50,624 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 18:35:50,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16289 states. [2020-07-20 18:35:51,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16289 to 16082. [2020-07-20 18:35:51,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16082 states. [2020-07-20 18:35:51,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16082 states to 16082 states and 24659 transitions. [2020-07-20 18:35:51,227 INFO L78 Accepts]: Start accepts. Automaton has 16082 states and 24659 transitions. Word has length 329 [2020-07-20 18:35:51,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 18:35:51,228 INFO L479 AbstractCegarLoop]: Abstraction has 16082 states and 24659 transitions. [2020-07-20 18:35:51,228 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 18:35:51,228 INFO L276 IsEmpty]: Start isEmpty. Operand 16082 states and 24659 transitions. [2020-07-20 18:35:51,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2020-07-20 18:35:51,265 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 18:35:51,265 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 18:35:51,480 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 18:35:51,481 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 18:35:51,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 18:35:51,482 INFO L82 PathProgramCache]: Analyzing trace with hash 1479478738, now seen corresponding path program 1 times [2020-07-20 18:35:51,482 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 18:35:51,482 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [555886043] [2020-07-20 18:35:51,482 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) 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 18:35:51,837 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-20 18:35:51,837 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 18:35:51,843 INFO L263 TraceCheckSpWp]: Trace formula consists of 988 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-20 18:35:51,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 18:35:52,127 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 18:35:52,128 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 18:35:52,128 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [555886043] [2020-07-20 18:35:52,129 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 18:35:52,129 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 18:35:52,129 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839830888] [2020-07-20 18:35:52,130 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 18:35:52,130 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 18:35:52,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 18:35:52,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 18:35:52,131 INFO L87 Difference]: Start difference. First operand 16082 states and 24659 transitions. Second operand 3 states. [2020-07-20 18:35:52,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 18:35:52,815 INFO L93 Difference]: Finished difference Result 47924 states and 73408 transitions. [2020-07-20 18:35:52,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 18:35:52,816 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 329 [2020-07-20 18:35:52,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 18:35:52,898 INFO L225 Difference]: With dead ends: 47924 [2020-07-20 18:35:52,898 INFO L226 Difference]: Without dead ends: 32007 [2020-07-20 18:35:52,945 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 18:35:52,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32007 states. [2020-07-20 18:35:53,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32007 to 16104. [2020-07-20 18:35:53,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16104 states. [2020-07-20 18:35:53,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16104 states to 16104 states and 24686 transitions. [2020-07-20 18:35:53,920 INFO L78 Accepts]: Start accepts. Automaton has 16104 states and 24686 transitions. Word has length 329 [2020-07-20 18:35:53,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 18:35:53,921 INFO L479 AbstractCegarLoop]: Abstraction has 16104 states and 24686 transitions. [2020-07-20 18:35:53,921 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 18:35:53,921 INFO L276 IsEmpty]: Start isEmpty. Operand 16104 states and 24686 transitions. [2020-07-20 18:35:53,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2020-07-20 18:35:53,952 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 18:35:53,953 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 18:35:54,167 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 18:35:54,168 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 18:35:54,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 18:35:54,169 INFO L82 PathProgramCache]: Analyzing trace with hash 1137007281, now seen corresponding path program 1 times [2020-07-20 18:35:54,169 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 18:35:54,169 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1844347388] [2020-07-20 18:35:54,170 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) 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 18:35:54,517 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-20 18:35:54,517 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 18:35:54,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 1944 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-20 18:35:54,534 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 18:35:54,600 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 18:35:54,601 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 18:35:54,601 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1844347388] [2020-07-20 18:35:54,601 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 18:35:54,601 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 18:35:54,601 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533391235] [2020-07-20 18:35:54,602 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 18:35:54,602 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 18:35:54,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 18:35:54,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 18:35:54,603 INFO L87 Difference]: Start difference. First operand 16104 states and 24686 transitions. Second operand 3 states. [2020-07-20 18:35:55,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 18:35:55,450 INFO L93 Difference]: Finished difference Result 47967 states and 73465 transitions. [2020-07-20 18:35:55,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 18:35:55,451 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 330 [2020-07-20 18:35:55,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 18:35:55,533 INFO L225 Difference]: With dead ends: 47967 [2020-07-20 18:35:55,533 INFO L226 Difference]: Without dead ends: 32042 [2020-07-20 18:35:55,576 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 18:35:55,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32042 states. [2020-07-20 18:35:56,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32042 to 16133. [2020-07-20 18:35:56,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16133 states. [2020-07-20 18:35:56,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16133 states to 16133 states and 24723 transitions. [2020-07-20 18:35:56,262 INFO L78 Accepts]: Start accepts. Automaton has 16133 states and 24723 transitions. Word has length 330 [2020-07-20 18:35:56,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 18:35:56,263 INFO L479 AbstractCegarLoop]: Abstraction has 16133 states and 24723 transitions. [2020-07-20 18:35:56,263 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 18:35:56,263 INFO L276 IsEmpty]: Start isEmpty. Operand 16133 states and 24723 transitions. [2020-07-20 18:35:56,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2020-07-20 18:35:56,296 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 18:35:56,297 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 18:35:56,511 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 18:35:56,512 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 18:35:56,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 18:35:56,513 INFO L82 PathProgramCache]: Analyzing trace with hash 1800835388, now seen corresponding path program 1 times [2020-07-20 18:35:56,513 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 18:35:56,513 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [198046842] [2020-07-20 18:35:56,513 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) 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 18:35:57,591 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-20 18:35:57,592 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 18:35:57,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 1944 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 18:35:57,608 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 18:35:57,697 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 18:35:57,698 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 18:35:57,698 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [198046842] [2020-07-20 18:35:57,698 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 18:35:57,699 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 18:35:57,699 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602497660] [2020-07-20 18:35:57,700 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 18:35:57,700 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 18:35:57,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 18:35:57,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 18:35:57,703 INFO L87 Difference]: Start difference. First operand 16133 states and 24723 transitions. Second operand 4 states. [2020-07-20 18:35:58,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 18:35:58,146 INFO L93 Difference]: Finished difference Result 32832 states and 50281 transitions. [2020-07-20 18:35:58,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 18:35:58,147 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 331 [2020-07-20 18:35:58,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 18:35:58,185 INFO L225 Difference]: With dead ends: 32832 [2020-07-20 18:35:58,186 INFO L226 Difference]: Without dead ends: 16724 [2020-07-20 18:35:58,223 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 18:35:58,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16724 states. [2020-07-20 18:35:58,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16724 to 16210. [2020-07-20 18:35:58,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16210 states. [2020-07-20 18:35:58,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16210 states to 16210 states and 24858 transitions. [2020-07-20 18:35:58,973 INFO L78 Accepts]: Start accepts. Automaton has 16210 states and 24858 transitions. Word has length 331 [2020-07-20 18:35:58,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 18:35:58,973 INFO L479 AbstractCegarLoop]: Abstraction has 16210 states and 24858 transitions. [2020-07-20 18:35:58,973 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 18:35:58,973 INFO L276 IsEmpty]: Start isEmpty. Operand 16210 states and 24858 transitions. [2020-07-20 18:35:58,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2020-07-20 18:35:59,000 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 18:35:59,000 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 18:35:59,213 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 18:35:59,214 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 18:35:59,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 18:35:59,215 INFO L82 PathProgramCache]: Analyzing trace with hash -938005802, now seen corresponding path program 1 times [2020-07-20 18:35:59,215 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 18:35:59,215 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [416281452] [2020-07-20 18:35:59,215 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) 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 18:35:59,588 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 18:35:59,589 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 18:35:59,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 2081 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-20 18:35:59,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 18:35:59,739 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 18:35:59,740 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 18:35:59,740 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [416281452] [2020-07-20 18:35:59,740 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 18:35:59,741 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 18:35:59,741 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25164329] [2020-07-20 18:35:59,742 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 18:35:59,742 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 18:35:59,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 18:35:59,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 18:35:59,743 INFO L87 Difference]: Start difference. First operand 16210 states and 24858 transitions. Second operand 3 states. [2020-07-20 18:36:00,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 18:36:00,579 INFO L93 Difference]: Finished difference Result 47641 states and 72918 transitions. [2020-07-20 18:36:00,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 18:36:00,580 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 333 [2020-07-20 18:36:00,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 18:36:00,645 INFO L225 Difference]: With dead ends: 47641 [2020-07-20 18:36:00,645 INFO L226 Difference]: Without dead ends: 31723 [2020-07-20 18:36:00,669 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 18:36:00,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31723 states. [2020-07-20 18:36:01,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31723 to 31516. [2020-07-20 18:36:01,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31516 states. [2020-07-20 18:36:01,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31516 states to 31516 states and 48059 transitions. [2020-07-20 18:36:01,496 INFO L78 Accepts]: Start accepts. Automaton has 31516 states and 48059 transitions. Word has length 333 [2020-07-20 18:36:01,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 18:36:01,497 INFO L479 AbstractCegarLoop]: Abstraction has 31516 states and 48059 transitions. [2020-07-20 18:36:01,497 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 18:36:01,497 INFO L276 IsEmpty]: Start isEmpty. Operand 31516 states and 48059 transitions. [2020-07-20 18:36:01,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2020-07-20 18:36:01,528 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 18:36:01,528 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 18:36:01,728 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 18:36:01,729 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 18:36:01,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 18:36:01,730 INFO L82 PathProgramCache]: Analyzing trace with hash -540100812, now seen corresponding path program 1 times [2020-07-20 18:36:01,730 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 18:36:01,731 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2146136721] [2020-07-20 18:36:01,731 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) 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 18:36:01,976 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-20 18:36:01,976 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 18:36:01,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 991 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-20 18:36:01,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 18:36:02,194 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 18:36:02,194 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 18:36:02,194 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2146136721] [2020-07-20 18:36:02,195 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 18:36:02,195 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 18:36:02,195 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758620231] [2020-07-20 18:36:02,196 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 18:36:02,196 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 18:36:02,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 18:36:02,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 18:36:02,197 INFO L87 Difference]: Start difference. First operand 31516 states and 48059 transitions. Second operand 3 states. [2020-07-20 18:36:04,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 18:36:04,442 INFO L93 Difference]: Finished difference Result 94437 states and 143985 transitions. [2020-07-20 18:36:04,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 18:36:04,443 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 333 [2020-07-20 18:36:04,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 18:36:04,540 INFO L225 Difference]: With dead ends: 94437 [2020-07-20 18:36:04,540 INFO L226 Difference]: Without dead ends: 62979 [2020-07-20 18:36:04,589 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 18:36:04,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62979 states. [2020-07-20 18:36:05,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62979 to 31534. [2020-07-20 18:36:05,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31534 states. [2020-07-20 18:36:05,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31534 states to 31534 states and 48080 transitions. [2020-07-20 18:36:05,663 INFO L78 Accepts]: Start accepts. Automaton has 31534 states and 48080 transitions. Word has length 333 [2020-07-20 18:36:05,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 18:36:05,663 INFO L479 AbstractCegarLoop]: Abstraction has 31534 states and 48080 transitions. [2020-07-20 18:36:05,663 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 18:36:05,663 INFO L276 IsEmpty]: Start isEmpty. Operand 31534 states and 48080 transitions. [2020-07-20 18:36:05,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2020-07-20 18:36:05,689 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 18:36:05,689 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 18:36:05,889 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 18:36:05,891 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 18:36:05,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 18:36:05,891 INFO L82 PathProgramCache]: Analyzing trace with hash -1698300866, now seen corresponding path program 1 times [2020-07-20 18:36:05,892 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 18:36:05,892 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1559067216] [2020-07-20 18:36:05,893 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) 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 18:36:06,148 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-20 18:36:06,149 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 18:36:06,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 991 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-20 18:36:06,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 18:36:06,404 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 18:36:06,405 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 18:36:06,405 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1559067216] [2020-07-20 18:36:06,405 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 18:36:06,406 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 18:36:06,406 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421815987] [2020-07-20 18:36:06,407 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 18:36:06,407 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 18:36:06,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 18:36:06,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 18:36:06,408 INFO L87 Difference]: Start difference. First operand 31534 states and 48080 transitions. Second operand 4 states. [2020-07-20 18:36:07,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 18:36:07,857 INFO L93 Difference]: Finished difference Result 89989 states and 137037 transitions. [2020-07-20 18:36:07,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 18:36:07,858 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 334 [2020-07-20 18:36:07,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 18:36:07,928 INFO L225 Difference]: With dead ends: 89989 [2020-07-20 18:36:07,928 INFO L226 Difference]: Without dead ends: 59042 [2020-07-20 18:36:07,975 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 331 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 18:36:08,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59042 states. [2020-07-20 18:36:09,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59042 to 31781. [2020-07-20 18:36:09,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31781 states. [2020-07-20 18:36:09,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31781 states to 31781 states and 48461 transitions. [2020-07-20 18:36:09,322 INFO L78 Accepts]: Start accepts. Automaton has 31781 states and 48461 transitions. Word has length 334 [2020-07-20 18:36:09,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 18:36:09,322 INFO L479 AbstractCegarLoop]: Abstraction has 31781 states and 48461 transitions. [2020-07-20 18:36:09,323 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 18:36:09,323 INFO L276 IsEmpty]: Start isEmpty. Operand 31781 states and 48461 transitions. [2020-07-20 18:36:09,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2020-07-20 18:36:09,352 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 18:36:09,352 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 18:36:09,562 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 18:36:09,563 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 18:36:09,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 18:36:09,564 INFO L82 PathProgramCache]: Analyzing trace with hash -576297978, now seen corresponding path program 1 times [2020-07-20 18:36:09,564 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 18:36:09,565 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1767917836] [2020-07-20 18:36:09,565 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) 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 18:36:09,807 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-20 18:36:09,807 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 18:36:09,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 1002 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-20 18:36:09,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 18:36:09,987 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 18:36:09,987 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 18:36:09,988 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1767917836] [2020-07-20 18:36:09,988 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 18:36:09,988 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-07-20 18:36:09,990 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494240877] [2020-07-20 18:36:09,991 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-20 18:36:09,991 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 18:36:09,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-20 18:36:09,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-07-20 18:36:09,993 INFO L87 Difference]: Start difference. First operand 31781 states and 48461 transitions. Second operand 9 states. [2020-07-20 18:36:28,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 18:36:28,031 INFO L93 Difference]: Finished difference Result 302288 states and 471720 transitions. [2020-07-20 18:36:28,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-07-20 18:36:28,032 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 335 [2020-07-20 18:36:28,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 18:36:30,563 INFO L225 Difference]: With dead ends: 302288 [2020-07-20 18:36:30,564 INFO L226 Difference]: Without dead ends: 291509 [2020-07-20 18:36:30,618 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 379 GetRequests, 342 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 425 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=370, Invalid=1112, Unknown=0, NotChecked=0, Total=1482 [2020-07-20 18:36:30,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291509 states. [2020-07-20 18:36:35,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291509 to 92797. [2020-07-20 18:36:35,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92797 states. [2020-07-20 18:36:35,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92797 states to 92797 states and 142733 transitions. [2020-07-20 18:36:35,713 INFO L78 Accepts]: Start accepts. Automaton has 92797 states and 142733 transitions. Word has length 335 [2020-07-20 18:36:35,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 18:36:35,713 INFO L479 AbstractCegarLoop]: Abstraction has 92797 states and 142733 transitions. [2020-07-20 18:36:35,713 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-20 18:36:35,713 INFO L276 IsEmpty]: Start isEmpty. Operand 92797 states and 142733 transitions. [2020-07-20 18:36:35,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2020-07-20 18:36:35,783 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 18:36:35,783 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 18:36:35,992 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 18:36:35,993 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 18:36:35,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 18:36:35,995 INFO L82 PathProgramCache]: Analyzing trace with hash 736168977, now seen corresponding path program 1 times [2020-07-20 18:36:35,995 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 18:36:35,996 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1087068331] [2020-07-20 18:36:35,998 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) 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 18:36:36,371 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 18:36:36,372 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 18:36:36,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 2088 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-20 18:36:36,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 18:36:36,450 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 18:36:36,450 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 18:36:36,451 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1087068331] [2020-07-20 18:36:36,451 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 18:36:36,451 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 18:36:36,451 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663167230] [2020-07-20 18:36:36,452 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 18:36:36,452 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 18:36:36,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 18:36:36,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 18:36:36,452 INFO L87 Difference]: Start difference. First operand 92797 states and 142733 transitions. Second operand 3 states. [2020-07-20 18:36:44,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 18:36:44,322 INFO L93 Difference]: Finished difference Result 235970 states and 364827 transitions. [2020-07-20 18:36:44,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 18:36:44,323 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 335 [2020-07-20 18:36:44,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 18:36:44,480 INFO L225 Difference]: With dead ends: 235970 [2020-07-20 18:36:44,480 INFO L226 Difference]: Without dead ends: 145011 [2020-07-20 18:36:44,542 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 18:36:44,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145011 states. [2020-07-20 18:36:52,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145011 to 115793. [2020-07-20 18:36:52,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115793 states. [2020-07-20 18:36:52,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115793 states to 115793 states and 180189 transitions. [2020-07-20 18:36:52,631 INFO L78 Accepts]: Start accepts. Automaton has 115793 states and 180189 transitions. Word has length 335 [2020-07-20 18:36:52,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 18:36:52,632 INFO L479 AbstractCegarLoop]: Abstraction has 115793 states and 180189 transitions. [2020-07-20 18:36:52,632 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 18:36:52,632 INFO L276 IsEmpty]: Start isEmpty. Operand 115793 states and 180189 transitions. [2020-07-20 18:36:52,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2020-07-20 18:36:52,691 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 18:36:52,691 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 18:36:52,891 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 18:36:52,892 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 18:36:52,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 18:36:52,893 INFO L82 PathProgramCache]: Analyzing trace with hash 1478670031, now seen corresponding path program 1 times [2020-07-20 18:36:52,894 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 18:36:52,894 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [133242277] [2020-07-20 18:36:52,895 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) 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 18:36:53,230 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-20 18:36:53,231 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 18:36:53,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 1962 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 18:36:53,241 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 18:36:53,379 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 18:36:53,379 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 18:36:53,380 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [133242277] [2020-07-20 18:36:53,380 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 18:36:53,380 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 18:36:53,380 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569930046] [2020-07-20 18:36:53,381 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 18:36:53,381 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 18:36:53,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 18:36:53,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-07-20 18:36:53,382 INFO L87 Difference]: Start difference. First operand 115793 states and 180189 transitions. Second operand 4 states. [2020-07-20 18:37:03,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 18:37:03,383 INFO L93 Difference]: Finished difference Result 275442 states and 434960 transitions. [2020-07-20 18:37:03,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 18:37:03,384 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 336 [2020-07-20 18:37:03,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 18:37:03,713 INFO L225 Difference]: With dead ends: 275442 [2020-07-20 18:37:03,713 INFO L226 Difference]: Without dead ends: 217351 [2020-07-20 18:37:03,803 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 335 GetRequests, 333 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-07-20 18:37:03,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217351 states. [2020-07-20 18:37:17,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217351 to 217349. [2020-07-20 18:37:17,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217349 states. [2020-07-20 18:37:18,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217349 states to 217349 states and 338533 transitions. [2020-07-20 18:37:18,045 INFO L78 Accepts]: Start accepts. Automaton has 217349 states and 338533 transitions. Word has length 336 [2020-07-20 18:37:18,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 18:37:18,046 INFO L479 AbstractCegarLoop]: Abstraction has 217349 states and 338533 transitions. [2020-07-20 18:37:18,046 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 18:37:18,046 INFO L276 IsEmpty]: Start isEmpty. Operand 217349 states and 338533 transitions. [2020-07-20 18:37:18,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2020-07-20 18:37:18,146 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 18:37:18,147 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 18:37:18,347 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 18:37:18,348 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 18:37:18,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 18:37:18,349 INFO L82 PathProgramCache]: Analyzing trace with hash -295010272, now seen corresponding path program 1 times [2020-07-20 18:37:18,349 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 18:37:18,350 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [823394827] [2020-07-20 18:37:18,350 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) 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 18:37:18,699 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-20 18:37:18,699 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 18:37:18,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 1961 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-20 18:37:18,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 18:37:18,771 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 18:37:18,772 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 18:37:18,772 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [823394827] [2020-07-20 18:37:18,772 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 18:37:18,772 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 18:37:18,772 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818231486] [2020-07-20 18:37:18,773 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 18:37:18,773 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 18:37:18,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 18:37:18,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 18:37:18,773 INFO L87 Difference]: Start difference. First operand 217349 states and 338533 transitions. Second operand 3 states. [2020-07-20 18:37:42,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 18:37:42,757 INFO L93 Difference]: Finished difference Result 651901 states and 1015371 transitions. [2020-07-20 18:37:42,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 18:37:42,757 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 336 [2020-07-20 18:37:42,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 18:37:43,375 INFO L225 Difference]: With dead ends: 651901 [2020-07-20 18:37:43,375 INFO L226 Difference]: Without dead ends: 434631 [2020-07-20 18:37:43,591 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 335 GetRequests, 334 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 18:37:43,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434631 states. [2020-07-20 18:38:06,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434631 to 217382. [2020-07-20 18:38:06,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217382 states. [2020-07-20 18:38:06,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217382 states to 217382 states and 338579 transitions. [2020-07-20 18:38:06,868 INFO L78 Accepts]: Start accepts. Automaton has 217382 states and 338579 transitions. Word has length 336 [2020-07-20 18:38:06,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 18:38:06,868 INFO L479 AbstractCegarLoop]: Abstraction has 217382 states and 338579 transitions. [2020-07-20 18:38:06,868 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 18:38:06,868 INFO L276 IsEmpty]: Start isEmpty. Operand 217382 states and 338579 transitions. [2020-07-20 18:38:06,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2020-07-20 18:38:06,980 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 18:38:06,980 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 18:38:07,181 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 18:38:07,181 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 18:38:07,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 18:38:07,182 INFO L82 PathProgramCache]: Analyzing trace with hash 1091655491, now seen corresponding path program 1 times [2020-07-20 18:38:07,182 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 18:38:07,183 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1843048522] [2020-07-20 18:38:07,183 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) 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 18:38:07,534 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-20 18:38:07,534 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 18:38:07,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 1963 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 18:38:07,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 18:38:07,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 18:38:07,618 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 18:38:07,623 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1843048522] [2020-07-20 18:38:07,624 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 18:38:07,625 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 18:38:07,625 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081280684] [2020-07-20 18:38:07,626 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 18:38:07,626 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 18:38:07,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 18:38:07,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 18:38:07,628 INFO L87 Difference]: Start difference. First operand 217382 states and 338579 transitions. Second operand 4 states. [2020-07-20 18:38:21,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 18:38:21,158 INFO L93 Difference]: Finished difference Result 436684 states and 679949 transitions. [2020-07-20 18:38:21,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 18:38:21,159 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 337 [2020-07-20 18:38:21,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 18:38:21,478 INFO L225 Difference]: With dead ends: 436684 [2020-07-20 18:38:21,479 INFO L226 Difference]: Without dead ends: 218708 [2020-07-20 18:38:21,631 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 337 GetRequests, 334 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 18:38:21,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218708 states. [2020-07-20 18:38:38,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218708 to 218501. [2020-07-20 18:38:38,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218501 states. [2020-07-20 18:38:39,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218501 states to 218501 states and 338822 transitions. [2020-07-20 18:38:39,038 INFO L78 Accepts]: Start accepts. Automaton has 218501 states and 338822 transitions. Word has length 337 [2020-07-20 18:38:39,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 18:38:39,038 INFO L479 AbstractCegarLoop]: Abstraction has 218501 states and 338822 transitions. [2020-07-20 18:38:39,038 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 18:38:39,039 INFO L276 IsEmpty]: Start isEmpty. Operand 218501 states and 338822 transitions. [2020-07-20 18:38:39,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2020-07-20 18:38:39,153 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 18:38:39,154 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 18:38:39,354 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 18:38:39,355 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 18:38:39,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 18:38:39,355 INFO L82 PathProgramCache]: Analyzing trace with hash -1628166162, now seen corresponding path program 1 times [2020-07-20 18:38:39,356 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 18:38:39,356 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2102412097] [2020-07-20 18:38:39,356 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) 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 18:38:39,701 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-20 18:38:39,701 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 18:38:39,707 INFO L263 TraceCheckSpWp]: Trace formula consists of 1965 conjuncts, 14 conjunts are in the unsatisfiable core [2020-07-20 18:38:39,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 18:38:40,015 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 18:38:40,015 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 18:38:40,016 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2102412097] [2020-07-20 18:38:40,016 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 18:38:40,016 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-07-20 18:38:40,016 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854383964] [2020-07-20 18:38:40,017 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-07-20 18:38:40,017 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 18:38:40,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-07-20 18:38:40,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2020-07-20 18:38:40,018 INFO L87 Difference]: Start difference. First operand 218501 states and 338822 transitions. Second operand 12 states. [2020-07-20 18:39:44,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 18:39:44,537 INFO L93 Difference]: Finished difference Result 844633 states and 1317645 transitions. [2020-07-20 18:39:44,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-07-20 18:39:44,538 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 338 [2020-07-20 18:39:44,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 18:39:46,159 INFO L225 Difference]: With dead ends: 844633 [2020-07-20 18:39:46,159 INFO L226 Difference]: Without dead ends: 720072 [2020-07-20 18:39:46,348 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 373 GetRequests, 327 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 629 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=552, Invalid=1704, Unknown=0, NotChecked=0, Total=2256 [2020-07-20 18:39:46,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 720072 states. [2020-07-20 18:40:10,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 720072 to 183019. [2020-07-20 18:40:10,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183019 states. [2020-07-20 18:40:10,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183019 states to 183019 states and 282456 transitions. [2020-07-20 18:40:10,523 INFO L78 Accepts]: Start accepts. Automaton has 183019 states and 282456 transitions. Word has length 338 [2020-07-20 18:40:10,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 18:40:10,524 INFO L479 AbstractCegarLoop]: Abstraction has 183019 states and 282456 transitions. [2020-07-20 18:40:10,524 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-07-20 18:40:10,524 INFO L276 IsEmpty]: Start isEmpty. Operand 183019 states and 282456 transitions. [2020-07-20 18:40:10,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2020-07-20 18:40:10,617 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 18:40:10,617 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 18:40:10,818 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 18:40:10,818 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 18:40:10,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 18:40:10,819 INFO L82 PathProgramCache]: Analyzing trace with hash 982476203, now seen corresponding path program 1 times [2020-07-20 18:40:10,824 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 18:40:10,824 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [816813815] [2020-07-20 18:40:10,825 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) 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 18:40:11,192 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 18:40:11,192 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 18:40:11,197 INFO L263 TraceCheckSpWp]: Trace formula consists of 2093 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 18:40:11,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 18:40:11,408 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 18:40:11,408 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 18:40:11,408 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [816813815] [2020-07-20 18:40:11,408 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 18:40:11,408 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 18:40:11,409 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974222428] [2020-07-20 18:40:11,409 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 18:40:11,410 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 18:40:11,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 18:40:11,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-20 18:40:11,410 INFO L87 Difference]: Start difference. First operand 183019 states and 282456 transitions. Second operand 5 states. [2020-07-20 18:40:43,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 18:40:43,469 INFO L93 Difference]: Finished difference Result 447706 states and 700392 transitions. [2020-07-20 18:40:43,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 18:40:43,470 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 338 [2020-07-20 18:40:43,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 18:40:43,991 INFO L225 Difference]: With dead ends: 447706 [2020-07-20 18:40:43,991 INFO L226 Difference]: Without dead ends: 354487 [2020-07-20 18:40:44,110 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 334 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-07-20 18:40:44,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354487 states. [2020-07-20 18:41:19,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354487 to 354433. [2020-07-20 18:41:19,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 354433 states. [2020-07-20 18:41:19,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354433 states to 354433 states and 547750 transitions. [2020-07-20 18:41:19,893 INFO L78 Accepts]: Start accepts. Automaton has 354433 states and 547750 transitions. Word has length 338 [2020-07-20 18:41:19,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 18:41:19,894 INFO L479 AbstractCegarLoop]: Abstraction has 354433 states and 547750 transitions. [2020-07-20 18:41:19,894 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 18:41:19,894 INFO L276 IsEmpty]: Start isEmpty. Operand 354433 states and 547750 transitions. [2020-07-20 18:41:20,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2020-07-20 18:41:20,085 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 18:41:20,085 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 18:41:20,285 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 18:41:20,286 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 18:41:20,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 18:41:20,287 INFO L82 PathProgramCache]: Analyzing trace with hash -1916220439, now seen corresponding path program 1 times [2020-07-20 18:41:20,287 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 18:41:20,287 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1315049475] [2020-07-20 18:41:20,288 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) 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 18:41:20,651 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 18:41:20,651 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 18:41:20,656 INFO L263 TraceCheckSpWp]: Trace formula consists of 2097 conjuncts, 15 conjunts are in the unsatisfiable core [2020-07-20 18:41:20,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 18:41:20,745 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 18:41:20,781 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 18:41:20,809 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 18:41:20,941 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 18:41:20,943 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 18:41:21,842 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 18:41:21,842 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 18:41:21,842 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1315049475] [2020-07-20 18:41:21,842 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 18:41:21,842 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-07-20 18:41:21,843 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259776072] [2020-07-20 18:41:21,843 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-07-20 18:41:21,843 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 18:41:21,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-07-20 18:41:21,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2020-07-20 18:41:21,844 INFO L87 Difference]: Start difference. First operand 354433 states and 547750 transitions. Second operand 14 states. [2020-07-20 18:42:45,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 18:42:45,446 INFO L93 Difference]: Finished difference Result 702449 states and 1093060 transitions. [2020-07-20 18:42:45,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-07-20 18:42:45,447 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 338 [2020-07-20 18:42:45,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 18:42:46,544 INFO L225 Difference]: With dead ends: 702449 [2020-07-20 18:42:46,544 INFO L226 Difference]: Without dead ends: 673090 [2020-07-20 18:42:46,702 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 369 GetRequests, 325 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 475 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=519, Invalid=1551, Unknown=0, NotChecked=0, Total=2070 [2020-07-20 18:42:47,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 673090 states. [2020-07-20 18:43:28,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 673090 to 376081. [2020-07-20 18:43:28,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 376081 states. [2020-07-20 18:43:29,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376081 states to 376081 states and 580454 transitions. [2020-07-20 18:43:29,391 INFO L78 Accepts]: Start accepts. Automaton has 376081 states and 580454 transitions. Word has length 338 [2020-07-20 18:43:29,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 18:43:29,392 INFO L479 AbstractCegarLoop]: Abstraction has 376081 states and 580454 transitions. [2020-07-20 18:43:29,392 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-07-20 18:43:29,392 INFO L276 IsEmpty]: Start isEmpty. Operand 376081 states and 580454 transitions. [2020-07-20 18:43:29,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2020-07-20 18:43:29,661 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 18:43:29,662 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 18:43:29,862 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 18:43:29,863 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 18:43:29,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 18:43:29,864 INFO L82 PathProgramCache]: Analyzing trace with hash 694421926, now seen corresponding path program 1 times [2020-07-20 18:43:29,864 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 18:43:29,865 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [617255297] [2020-07-20 18:43:29,865 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) 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 18:43:30,262 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 18:43:30,262 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 18:43:30,269 INFO L263 TraceCheckSpWp]: Trace formula consists of 2094 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 18:43:30,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 18:43:30,395 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 18:43:30,396 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 18:43:30,396 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [617255297] [2020-07-20 18:43:30,396 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 18:43:30,396 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 18:43:30,396 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169410217] [2020-07-20 18:43:30,397 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 18:43:30,397 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 18:43:30,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 18:43:30,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 18:43:30,397 INFO L87 Difference]: Start difference. First operand 376081 states and 580454 transitions. Second operand 4 states. [2020-07-20 18:44:46,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 18:44:46,783 INFO L93 Difference]: Finished difference Result 1111435 states and 1713749 transitions. [2020-07-20 18:44:46,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 18:44:46,784 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 338 [2020-07-20 18:44:46,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 18:44:47,974 INFO L225 Difference]: With dead ends: 1111435 [2020-07-20 18:44:47,974 INFO L226 Difference]: Without dead ends: 735791 [2020-07-20 18:44:48,317 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 335 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 18:44:48,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 735791 states. [2020-07-20 18:46:04,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 735791 to 735432. [2020-07-20 18:46:04,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 735432 states. [2020-07-20 18:46:05,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 735432 states to 735432 states and 1128817 transitions. [2020-07-20 18:46:05,834 INFO L78 Accepts]: Start accepts. Automaton has 735432 states and 1128817 transitions. Word has length 338 [2020-07-20 18:46:05,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 18:46:05,834 INFO L479 AbstractCegarLoop]: Abstraction has 735432 states and 1128817 transitions. [2020-07-20 18:46:05,834 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 18:46:05,834 INFO L276 IsEmpty]: Start isEmpty. Operand 735432 states and 1128817 transitions. [2020-07-20 18:46:06,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2020-07-20 18:46:06,357 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 18:46:06,358 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 18:46:06,558 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 18:46:06,559 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 18:46:06,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 18:46:06,560 INFO L82 PathProgramCache]: Analyzing trace with hash 1358922356, now seen corresponding path program 1 times [2020-07-20 18:46:06,560 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 18:46:06,560 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1827527171] [2020-07-20 18:46:06,561 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) 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 18:46:06,804 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-20 18:46:06,804 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 18:46:06,807 INFO L263 TraceCheckSpWp]: Trace formula consists of 1006 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-20 18:46:06,811 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 18:46:17,335 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 18:46:17,336 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 18:46:17,336 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1827527171] [2020-07-20 18:46:17,337 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 18:46:17,337 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-07-20 18:46:17,337 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093396904] [2020-07-20 18:46:17,338 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-20 18:46:17,339 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 18:46:17,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-20 18:46:17,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-07-20 18:46:17,339 INFO L87 Difference]: Start difference. First operand 735432 states and 1128817 transitions. Second operand 9 states.