/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_FUNCTIONS --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.4.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 15:05:50,827 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 15:05:50,830 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 15:05:50,843 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 15:05:50,843 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 15:05:50,844 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 15:05:50,845 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 15:05:50,847 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 15:05:50,849 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 15:05:50,850 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 15:05:50,851 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 15:05:50,852 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 15:05:50,852 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 15:05:50,853 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 15:05:50,854 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 15:05:50,856 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 15:05:50,856 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 15:05:50,857 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 15:05:50,859 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 15:05:50,861 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 15:05:50,863 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 15:05:50,864 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 15:05:50,865 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 15:05:50,866 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 15:05:50,869 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 15:05:50,879 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 15:05:50,880 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 15:05:50,881 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 15:05:50,882 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 15:05:50,897 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 15:05:50,898 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 15:05:50,899 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 15:05:50,899 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 15:05:50,899 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 15:05:50,900 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 15:05:50,900 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 15:05:50,900 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 15:05:50,900 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 15:05:50,900 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 15:05:50,901 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 15:05:50,901 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 15:05:50,901 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 15:05:50,901 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 15:05:50,901 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 15:05:50,902 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 15:05:50,902 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 15:05:50,902 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 15:05:50,902 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 15:05:50,902 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 15:05:50,903 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 15:05:50,903 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 15:05:50,903 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 15:05:50,903 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 15:05:50,903 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 15:05:50,904 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 15:05:50,904 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 15:05:50,904 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 15:05:50,904 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 15:05:50,904 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_FUNCTIONS 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 15:05:51,174 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 15:05:51,187 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 15:05:51,190 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 15:05:51,192 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 15:05:51,192 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 15:05:51,193 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-07-20 15:05:51,270 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3ed40d947/639165593bac4f27ae5341d720a445e6/FLAG5e8a064db [2020-07-20 15:05:51,996 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 15:05:51,997 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-07-20 15:05:52,022 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3ed40d947/639165593bac4f27ae5341d720a445e6/FLAG5e8a064db [2020-07-20 15:05:52,132 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3ed40d947/639165593bac4f27ae5341d720a445e6 [2020-07-20 15:05:52,143 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 15:05:52,145 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 15:05:52,147 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 15:05:52,147 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 15:05:52,152 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 15:05:52,153 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 03:05:52" (1/1) ... [2020-07-20 15:05:52,157 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e09eb47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:05:52, skipping insertion in model container [2020-07-20 15:05:52,157 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 03:05:52" (1/1) ... [2020-07-20 15:05:52,165 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 15:05:52,339 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 15:05:53,859 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 15:05:53,875 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 15:05:54,894 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 15:05:54,926 INFO L208 MainTranslator]: Completed translation [2020-07-20 15:05:54,926 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:05:54 WrapperNode [2020-07-20 15:05:54,926 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 15:05:54,927 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 15:05:54,927 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 15:05:54,928 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 15:05:54,943 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:05:54" (1/1) ... [2020-07-20 15:05:54,945 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:05:54" (1/1) ... [2020-07-20 15:05:55,004 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:05:54" (1/1) ... [2020-07-20 15:05:55,004 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:05:54" (1/1) ... [2020-07-20 15:05:55,094 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:05:54" (1/1) ... [2020-07-20 15:05:55,153 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:05:54" (1/1) ... [2020-07-20 15:05:55,173 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:05:54" (1/1) ... [2020-07-20 15:05:55,198 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 15:05:55,200 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 15:05:55,201 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 15:05:55,201 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 15:05:55,202 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:05:54" (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 15:05:55,278 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 15:05:55,278 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 15:05:55,278 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-20 15:05:55,278 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 15:05:55,279 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 15:05:55,280 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-07-20 15:05:55,280 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-07-20 15:05:55,280 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-07-20 15:05:55,281 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-07-20 15:05:55,281 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-20 15:05:55,282 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-20 15:05:55,282 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-07-20 15:05:55,282 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-07-20 15:05:55,282 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-07-20 15:05:55,283 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-07-20 15:05:55,283 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-07-20 15:05:55,284 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-07-20 15:05:55,284 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-07-20 15:05:55,284 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-07-20 15:05:55,284 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 15:05:55,285 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 15:05:55,285 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 15:05:58,537 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 15:05:58,537 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-20 15:05:58,551 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 03:05:58 BoogieIcfgContainer [2020-07-20 15:05:58,551 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 15:05:58,552 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 15:05:58,553 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 15:05:58,556 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 15:05:58,557 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 03:05:52" (1/3) ... [2020-07-20 15:05:58,557 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@882bf16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 03:05:58, skipping insertion in model container [2020-07-20 15:05:58,558 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:05:54" (2/3) ... [2020-07-20 15:05:58,558 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@882bf16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 03:05:58, skipping insertion in model container [2020-07-20 15:05:58,558 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 03:05:58" (3/3) ... [2020-07-20 15:05:58,560 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-07-20 15:05:58,573 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 15:05:58,584 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 12 error locations. [2020-07-20 15:05:58,602 INFO L251 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2020-07-20 15:05:58,636 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 15:05:58,637 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 15:05:58,637 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 15:05:58,637 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 15:05:58,637 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 15:05:58,637 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 15:05:58,638 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 15:05:58,638 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 15:05:58,682 INFO L276 IsEmpty]: Start isEmpty. Operand 1016 states. [2020-07-20 15:05:58,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2020-07-20 15:05:58,715 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 15:05:58,717 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 15:05:58,718 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 15:05:58,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 15:05:58,726 INFO L82 PathProgramCache]: Analyzing trace with hash -179235525, now seen corresponding path program 1 times [2020-07-20 15:05:58,737 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 15:05:58,738 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1165267327] [2020-07-20 15:05:58,739 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 15:05:59,245 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-20 15:05:59,246 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 15:05:59,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 1140 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 15:05:59,271 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 15:05:59,546 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 15:05:59,547 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 15:05:59,548 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1165267327] [2020-07-20 15:05:59,549 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 15:05:59,549 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 15:05:59,550 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779017774] [2020-07-20 15:05:59,556 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 15:05:59,556 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 15:05:59,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 15:05:59,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 15:05:59,573 INFO L87 Difference]: Start difference. First operand 1016 states. Second operand 4 states. [2020-07-20 15:05:59,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 15:05:59,943 INFO L93 Difference]: Finished difference Result 2984 states and 5341 transitions. [2020-07-20 15:05:59,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 15:05:59,946 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 324 [2020-07-20 15:05:59,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 15:05:59,974 INFO L225 Difference]: With dead ends: 2984 [2020-07-20 15:05:59,975 INFO L226 Difference]: Without dead ends: 1977 [2020-07-20 15:05:59,984 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 321 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 15:06:00,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1977 states. [2020-07-20 15:06:00,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1977 to 1903. [2020-07-20 15:06:00,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1903 states. [2020-07-20 15:06:00,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1903 states to 1903 states and 2895 transitions. [2020-07-20 15:06:00,144 INFO L78 Accepts]: Start accepts. Automaton has 1903 states and 2895 transitions. Word has length 324 [2020-07-20 15:06:00,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 15:06:00,147 INFO L479 AbstractCegarLoop]: Abstraction has 1903 states and 2895 transitions. [2020-07-20 15:06:00,147 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 15:06:00,147 INFO L276 IsEmpty]: Start isEmpty. Operand 1903 states and 2895 transitions. [2020-07-20 15:06:00,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2020-07-20 15:06:00,162 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 15:06:00,162 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] [2020-07-20 15:06:00,377 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 15:06:00,377 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 15:06:00,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 15:06:00,378 INFO L82 PathProgramCache]: Analyzing trace with hash 1188186889, now seen corresponding path program 1 times [2020-07-20 15:06:00,378 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 15:06:00,378 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2081452828] [2020-07-20 15:06:00,378 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 15:06:00,698 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-20 15:06:00,699 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 15:06:00,704 INFO L263 TraceCheckSpWp]: Trace formula consists of 1143 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-20 15:06:00,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 15:06:00,895 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 15:06:00,895 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 15:06:00,896 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2081452828] [2020-07-20 15:06:00,896 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 15:06:00,896 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 15:06:00,897 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147276799] [2020-07-20 15:06:00,899 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 15:06:00,899 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 15:06:00,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 15:06:00,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 15:06:00,900 INFO L87 Difference]: Start difference. First operand 1903 states and 2895 transitions. Second operand 3 states. [2020-07-20 15:06:01,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 15:06:01,134 INFO L93 Difference]: Finished difference Result 5501 states and 8327 transitions. [2020-07-20 15:06:01,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 15:06:01,135 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 326 [2020-07-20 15:06:01,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 15:06:01,154 INFO L225 Difference]: With dead ends: 5501 [2020-07-20 15:06:01,155 INFO L226 Difference]: Without dead ends: 3700 [2020-07-20 15:06:01,160 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 325 GetRequests, 324 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 15:06:01,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3700 states. [2020-07-20 15:06:01,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3700 to 3634. [2020-07-20 15:06:01,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3634 states. [2020-07-20 15:06:01,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3634 states to 3634 states and 5512 transitions. [2020-07-20 15:06:01,289 INFO L78 Accepts]: Start accepts. Automaton has 3634 states and 5512 transitions. Word has length 326 [2020-07-20 15:06:01,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 15:06:01,290 INFO L479 AbstractCegarLoop]: Abstraction has 3634 states and 5512 transitions. [2020-07-20 15:06:01,290 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 15:06:01,290 INFO L276 IsEmpty]: Start isEmpty. Operand 3634 states and 5512 transitions. [2020-07-20 15:06:01,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2020-07-20 15:06:01,301 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 15:06:01,302 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 15:06:01,514 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 15:06:01,515 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 15:06:01,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 15:06:01,516 INFO L82 PathProgramCache]: Analyzing trace with hash 687677710, now seen corresponding path program 1 times [2020-07-20 15:06:01,516 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 15:06:01,516 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [716234157] [2020-07-20 15:06:01,516 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 15:06:01,822 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-20 15:06:01,823 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 15:06:01,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 1009 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-20 15:06:01,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 15:06:01,908 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 15:06:01,908 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 15:06:01,909 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [716234157] [2020-07-20 15:06:01,909 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 15:06:01,909 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 15:06:01,910 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889990351] [2020-07-20 15:06:01,911 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 15:06:01,911 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 15:06:01,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 15:06:01,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 15:06:01,912 INFO L87 Difference]: Start difference. First operand 3634 states and 5512 transitions. Second operand 3 states. [2020-07-20 15:06:02,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 15:06:02,139 INFO L93 Difference]: Finished difference Result 10870 states and 16487 transitions. [2020-07-20 15:06:02,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 15:06:02,140 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 326 [2020-07-20 15:06:02,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 15:06:02,175 INFO L225 Difference]: With dead ends: 10870 [2020-07-20 15:06:02,175 INFO L226 Difference]: Without dead ends: 7251 [2020-07-20 15:06:02,184 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 325 GetRequests, 324 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 15:06:02,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7251 states. [2020-07-20 15:06:02,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7251 to 3645. [2020-07-20 15:06:02,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3645 states. [2020-07-20 15:06:02,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3645 states to 3645 states and 5528 transitions. [2020-07-20 15:06:02,362 INFO L78 Accepts]: Start accepts. Automaton has 3645 states and 5528 transitions. Word has length 326 [2020-07-20 15:06:02,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 15:06:02,363 INFO L479 AbstractCegarLoop]: Abstraction has 3645 states and 5528 transitions. [2020-07-20 15:06:02,363 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 15:06:02,363 INFO L276 IsEmpty]: Start isEmpty. Operand 3645 states and 5528 transitions. [2020-07-20 15:06:02,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2020-07-20 15:06:02,373 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 15:06:02,373 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 15:06:02,586 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 15:06:02,587 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 15:06:02,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 15:06:02,588 INFO L82 PathProgramCache]: Analyzing trace with hash -962526427, now seen corresponding path program 1 times [2020-07-20 15:06:02,588 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 15:06:02,588 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [828103724] [2020-07-20 15:06:02,589 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 15:06:02,909 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-20 15:06:02,909 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 15:06:02,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 1144 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-20 15:06:02,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 15:06:02,989 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 15:06:02,990 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 15:06:02,990 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [828103724] [2020-07-20 15:06:02,990 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 15:06:02,990 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 15:06:02,991 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28778344] [2020-07-20 15:06:02,991 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 15:06:02,992 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 15:06:02,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 15:06:02,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 15:06:02,992 INFO L87 Difference]: Start difference. First operand 3645 states and 5528 transitions. Second operand 3 states. [2020-07-20 15:06:03,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 15:06:03,223 INFO L93 Difference]: Finished difference Result 10827 states and 16405 transitions. [2020-07-20 15:06:03,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 15:06:03,223 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 327 [2020-07-20 15:06:03,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 15:06:03,257 INFO L225 Difference]: With dead ends: 10827 [2020-07-20 15:06:03,258 INFO L226 Difference]: Without dead ends: 7212 [2020-07-20 15:06:03,269 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 15:06:03,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7212 states. [2020-07-20 15:06:03,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7212 to 3655. [2020-07-20 15:06:03,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3655 states. [2020-07-20 15:06:03,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3655 states to 3655 states and 5542 transitions. [2020-07-20 15:06:03,461 INFO L78 Accepts]: Start accepts. Automaton has 3655 states and 5542 transitions. Word has length 327 [2020-07-20 15:06:03,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 15:06:03,462 INFO L479 AbstractCegarLoop]: Abstraction has 3655 states and 5542 transitions. [2020-07-20 15:06:03,462 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 15:06:03,462 INFO L276 IsEmpty]: Start isEmpty. Operand 3655 states and 5542 transitions. [2020-07-20 15:06:03,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2020-07-20 15:06:03,529 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 15:06:03,530 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 15:06:03,730 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 15:06:03,731 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 15:06:03,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 15:06:03,731 INFO L82 PathProgramCache]: Analyzing trace with hash 1589218468, now seen corresponding path program 1 times [2020-07-20 15:06:03,732 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 15:06:03,732 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [567329667] [2020-07-20 15:06:03,732 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 15:06:04,017 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-20 15:06:04,018 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 15:06:04,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 1143 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 15:06:04,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 15:06:04,097 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 15:06:04,098 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 15:06:04,098 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [567329667] [2020-07-20 15:06:04,098 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 15:06:04,098 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 15:06:04,099 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165898262] [2020-07-20 15:06:04,099 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 15:06:04,100 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 15:06:04,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 15:06:04,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 15:06:04,100 INFO L87 Difference]: Start difference. First operand 3655 states and 5542 transitions. Second operand 4 states. [2020-07-20 15:06:04,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 15:06:04,417 INFO L93 Difference]: Finished difference Result 8067 states and 12222 transitions. [2020-07-20 15:06:04,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 15:06:04,417 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 328 [2020-07-20 15:06:04,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 15:06:04,459 INFO L225 Difference]: With dead ends: 8067 [2020-07-20 15:06:04,459 INFO L226 Difference]: Without dead ends: 4100 [2020-07-20 15:06:04,473 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 325 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 15:06:04,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4100 states. [2020-07-20 15:06:04,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4100 to 4034. [2020-07-20 15:06:04,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4034 states. [2020-07-20 15:06:04,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4034 states to 4034 states and 6095 transitions. [2020-07-20 15:06:04,690 INFO L78 Accepts]: Start accepts. Automaton has 4034 states and 6095 transitions. Word has length 328 [2020-07-20 15:06:04,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 15:06:04,690 INFO L479 AbstractCegarLoop]: Abstraction has 4034 states and 6095 transitions. [2020-07-20 15:06:04,691 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 15:06:04,691 INFO L276 IsEmpty]: Start isEmpty. Operand 4034 states and 6095 transitions. [2020-07-20 15:06:04,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2020-07-20 15:06:04,704 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 15:06:04,704 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 15:06:04,918 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 15:06:04,919 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 15:06:04,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 15:06:04,920 INFO L82 PathProgramCache]: Analyzing trace with hash -359822639, now seen corresponding path program 1 times [2020-07-20 15:06:04,920 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 15:06:04,920 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1876317913] [2020-07-20 15:06:04,921 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 15:06:05,265 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-20 15:06:05,266 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 15:06:05,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 1147 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 15:06:05,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 15:06:05,401 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 15:06:05,401 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 15:06:05,402 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1876317913] [2020-07-20 15:06:05,402 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 15:06:05,402 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 15:06:05,402 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473247974] [2020-07-20 15:06:05,403 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 15:06:05,403 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 15:06:05,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 15:06:05,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 15:06:05,404 INFO L87 Difference]: Start difference. First operand 4034 states and 6095 transitions. Second operand 4 states. [2020-07-20 15:06:05,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 15:06:05,789 INFO L93 Difference]: Finished difference Result 11837 states and 17846 transitions. [2020-07-20 15:06:05,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 15:06:05,790 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 329 [2020-07-20 15:06:05,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 15:06:05,810 INFO L225 Difference]: With dead ends: 11837 [2020-07-20 15:06:05,810 INFO L226 Difference]: Without dead ends: 7877 [2020-07-20 15:06:05,825 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 326 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 15:06:05,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7877 states. [2020-07-20 15:06:06,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7877 to 7723. [2020-07-20 15:06:06,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7723 states. [2020-07-20 15:06:06,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7723 states to 7723 states and 11609 transitions. [2020-07-20 15:06:06,207 INFO L78 Accepts]: Start accepts. Automaton has 7723 states and 11609 transitions. Word has length 329 [2020-07-20 15:06:06,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 15:06:06,209 INFO L479 AbstractCegarLoop]: Abstraction has 7723 states and 11609 transitions. [2020-07-20 15:06:06,209 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 15:06:06,209 INFO L276 IsEmpty]: Start isEmpty. Operand 7723 states and 11609 transitions. [2020-07-20 15:06:06,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2020-07-20 15:06:06,233 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 15:06:06,234 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 15:06:06,446 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 15:06:06,447 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 15:06:06,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 15:06:06,448 INFO L82 PathProgramCache]: Analyzing trace with hash 778922777, now seen corresponding path program 1 times [2020-07-20 15:06:06,449 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 15:06:06,449 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [457316437] [2020-07-20 15:06:06,450 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 15:06:06,718 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-20 15:06:06,719 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 15:06:06,723 INFO L263 TraceCheckSpWp]: Trace formula consists of 1146 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-20 15:06:06,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 15:06:06,841 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 15:06:06,841 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 15:06:06,842 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [457316437] [2020-07-20 15:06:06,842 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 15:06:06,842 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 15:06:06,842 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259787968] [2020-07-20 15:06:06,843 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 15:06:06,843 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 15:06:06,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 15:06:06,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 15:06:06,844 INFO L87 Difference]: Start difference. First operand 7723 states and 11609 transitions. Second operand 3 states. [2020-07-20 15:06:07,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 15:06:07,457 INFO L93 Difference]: Finished difference Result 22099 states and 33019 transitions. [2020-07-20 15:06:07,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 15:06:07,457 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 331 [2020-07-20 15:06:07,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 15:06:07,504 INFO L225 Difference]: With dead ends: 22099 [2020-07-20 15:06:07,504 INFO L226 Difference]: Without dead ends: 14929 [2020-07-20 15:06:07,523 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 329 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 15:06:07,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14929 states. [2020-07-20 15:06:08,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14929 to 14763. [2020-07-20 15:06:08,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14763 states. [2020-07-20 15:06:08,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14763 states to 14763 states and 22025 transitions. [2020-07-20 15:06:08,046 INFO L78 Accepts]: Start accepts. Automaton has 14763 states and 22025 transitions. Word has length 331 [2020-07-20 15:06:08,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 15:06:08,047 INFO L479 AbstractCegarLoop]: Abstraction has 14763 states and 22025 transitions. [2020-07-20 15:06:08,047 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 15:06:08,047 INFO L276 IsEmpty]: Start isEmpty. Operand 14763 states and 22025 transitions. [2020-07-20 15:06:08,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2020-07-20 15:06:08,080 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 15:06:08,080 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 15:06:08,294 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 15:06:08,295 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 15:06:08,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 15:06:08,295 INFO L82 PathProgramCache]: Analyzing trace with hash 310961745, now seen corresponding path program 1 times [2020-07-20 15:06:08,296 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 15:06:08,296 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [768441433] [2020-07-20 15:06:08,296 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 15:06:08,572 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-20 15:06:08,573 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 15:06:08,578 INFO L263 TraceCheckSpWp]: Trace formula consists of 1146 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-20 15:06:08,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 15:06:08,755 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 15:06:08,756 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 15:06:08,756 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [768441433] [2020-07-20 15:06:08,756 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 15:06:08,757 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 15:06:08,757 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115102980] [2020-07-20 15:06:08,758 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 15:06:08,758 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 15:06:08,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 15:06:08,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 15:06:08,759 INFO L87 Difference]: Start difference. First operand 14763 states and 22025 transitions. Second operand 3 states. [2020-07-20 15:06:09,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 15:06:09,439 INFO L93 Difference]: Finished difference Result 43399 states and 64568 transitions. [2020-07-20 15:06:09,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 15:06:09,440 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 332 [2020-07-20 15:06:09,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 15:06:09,507 INFO L225 Difference]: With dead ends: 43399 [2020-07-20 15:06:09,507 INFO L226 Difference]: Without dead ends: 29096 [2020-07-20 15:06:09,547 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 330 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 15:06:09,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29096 states. [2020-07-20 15:06:10,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29096 to 14783. [2020-07-20 15:06:10,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14783 states. [2020-07-20 15:06:10,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14783 states to 14783 states and 22040 transitions. [2020-07-20 15:06:10,354 INFO L78 Accepts]: Start accepts. Automaton has 14783 states and 22040 transitions. Word has length 332 [2020-07-20 15:06:10,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 15:06:10,354 INFO L479 AbstractCegarLoop]: Abstraction has 14783 states and 22040 transitions. [2020-07-20 15:06:10,354 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 15:06:10,355 INFO L276 IsEmpty]: Start isEmpty. Operand 14783 states and 22040 transitions. [2020-07-20 15:06:10,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2020-07-20 15:06:10,377 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 15:06:10,378 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 15:06:10,592 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 15:06:10,593 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 15:06:10,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 15:06:10,594 INFO L82 PathProgramCache]: Analyzing trace with hash 2044614068, now seen corresponding path program 1 times [2020-07-20 15:06:10,595 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 15:06:10,595 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1916273976] [2020-07-20 15:06:10,596 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 15:06:10,858 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-20 15:06:10,859 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 15:06:10,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 1149 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 15:06:10,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 15:06:10,942 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 15:06:10,942 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 15:06:10,942 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1916273976] [2020-07-20 15:06:10,943 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 15:06:10,943 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 15:06:10,943 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919640401] [2020-07-20 15:06:10,944 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 15:06:10,944 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 15:06:10,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 15:06:10,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 15:06:10,945 INFO L87 Difference]: Start difference. First operand 14783 states and 22040 transitions. Second operand 4 states. [2020-07-20 15:06:12,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 15:06:12,145 INFO L93 Difference]: Finished difference Result 31164 states and 46398 transitions. [2020-07-20 15:06:12,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 15:06:12,146 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 333 [2020-07-20 15:06:12,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 15:06:12,172 INFO L225 Difference]: With dead ends: 31164 [2020-07-20 15:06:12,173 INFO L226 Difference]: Without dead ends: 17022 [2020-07-20 15:06:12,198 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 333 GetRequests, 330 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 15:06:12,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17022 states. [2020-07-20 15:06:12,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17022 to 15050. [2020-07-20 15:06:12,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15050 states. [2020-07-20 15:06:12,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15050 states to 15050 states and 22470 transitions. [2020-07-20 15:06:12,664 INFO L78 Accepts]: Start accepts. Automaton has 15050 states and 22470 transitions. Word has length 333 [2020-07-20 15:06:12,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 15:06:12,664 INFO L479 AbstractCegarLoop]: Abstraction has 15050 states and 22470 transitions. [2020-07-20 15:06:12,664 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 15:06:12,664 INFO L276 IsEmpty]: Start isEmpty. Operand 15050 states and 22470 transitions. [2020-07-20 15:06:12,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2020-07-20 15:06:12,680 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 15:06:12,680 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 15:06:12,881 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 15:06:12,882 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 15:06:12,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 15:06:12,882 INFO L82 PathProgramCache]: Analyzing trace with hash 744202144, now seen corresponding path program 1 times [2020-07-20 15:06:12,883 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 15:06:12,883 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [607026273] [2020-07-20 15:06:12,884 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 15:06:13,115 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-20 15:06:13,115 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 15:06:13,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 1013 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-20 15:06:13,124 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 15:06:13,180 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 15:06:13,180 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 15:06:13,181 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [607026273] [2020-07-20 15:06:13,181 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 15:06:13,181 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 15:06:13,181 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118479784] [2020-07-20 15:06:13,182 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 15:06:13,182 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 15:06:13,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 15:06:13,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 15:06:13,183 INFO L87 Difference]: Start difference. First operand 15050 states and 22470 transitions. Second operand 4 states. [2020-07-20 15:06:14,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 15:06:14,152 INFO L93 Difference]: Finished difference Result 43399 states and 64502 transitions. [2020-07-20 15:06:14,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 15:06:14,152 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 334 [2020-07-20 15:06:14,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 15:06:14,189 INFO L225 Difference]: With dead ends: 43399 [2020-07-20 15:06:14,189 INFO L226 Difference]: Without dead ends: 29637 [2020-07-20 15:06:14,219 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 15:06:14,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29637 states. [2020-07-20 15:06:15,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29637 to 16370. [2020-07-20 15:06:15,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16370 states. [2020-07-20 15:06:15,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16370 states to 16370 states and 24644 transitions. [2020-07-20 15:06:15,035 INFO L78 Accepts]: Start accepts. Automaton has 16370 states and 24644 transitions. Word has length 334 [2020-07-20 15:06:15,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 15:06:15,036 INFO L479 AbstractCegarLoop]: Abstraction has 16370 states and 24644 transitions. [2020-07-20 15:06:15,036 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 15:06:15,036 INFO L276 IsEmpty]: Start isEmpty. Operand 16370 states and 24644 transitions. [2020-07-20 15:06:15,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2020-07-20 15:06:15,055 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 15:06:15,056 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 15:06:15,256 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 15:06:15,258 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 15:06:15,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 15:06:15,259 INFO L82 PathProgramCache]: Analyzing trace with hash 1802513424, now seen corresponding path program 1 times [2020-07-20 15:06:15,259 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 15:06:15,260 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1001824770] [2020-07-20 15:06:15,260 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 15:06:15,489 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-20 15:06:15,489 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 15:06:15,492 INFO L263 TraceCheckSpWp]: Trace formula consists of 1012 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-20 15:06:15,497 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 15:06:15,568 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 15:06:15,569 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 15:06:15,569 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1001824770] [2020-07-20 15:06:15,569 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 15:06:15,569 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 15:06:15,570 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717815772] [2020-07-20 15:06:15,570 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 15:06:15,571 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 15:06:15,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 15:06:15,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 15:06:15,571 INFO L87 Difference]: Start difference. First operand 16370 states and 24644 transitions. Second operand 4 states. [2020-07-20 15:06:17,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 15:06:17,024 INFO L93 Difference]: Finished difference Result 44066 states and 65828 transitions. [2020-07-20 15:06:17,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 15:06:17,025 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 336 [2020-07-20 15:06:17,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 15:06:17,060 INFO L225 Difference]: With dead ends: 44066 [2020-07-20 15:06:17,061 INFO L226 Difference]: Without dead ends: 30020 [2020-07-20 15:06:17,075 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 333 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-20 15:06:17,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30020 states. [2020-07-20 15:06:17,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30020 to 18243. [2020-07-20 15:06:17,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18243 states. [2020-07-20 15:06:17,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18243 states to 18243 states and 27689 transitions. [2020-07-20 15:06:17,692 INFO L78 Accepts]: Start accepts. Automaton has 18243 states and 27689 transitions. Word has length 336 [2020-07-20 15:06:17,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 15:06:17,693 INFO L479 AbstractCegarLoop]: Abstraction has 18243 states and 27689 transitions. [2020-07-20 15:06:17,693 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 15:06:17,693 INFO L276 IsEmpty]: Start isEmpty. Operand 18243 states and 27689 transitions. [2020-07-20 15:06:17,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2020-07-20 15:06:17,710 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 15:06:17,710 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 15:06:17,910 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 15:06:17,911 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 15:06:17,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 15:06:17,912 INFO L82 PathProgramCache]: Analyzing trace with hash 1935266766, now seen corresponding path program 1 times [2020-07-20 15:06:17,913 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 15:06:17,913 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [156818214] [2020-07-20 15:06:17,914 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 15:06:18,149 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-20 15:06:18,149 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 15:06:18,151 INFO L263 TraceCheckSpWp]: Trace formula consists of 1026 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-20 15:06:18,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 15:06:18,319 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 15:06:18,319 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 15:06:18,319 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [156818214] [2020-07-20 15:06:18,320 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 15:06:18,320 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-07-20 15:06:18,321 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727806172] [2020-07-20 15:06:18,321 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-20 15:06:18,322 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 15:06:18,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-20 15:06:18,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-07-20 15:06:18,323 INFO L87 Difference]: Start difference. First operand 18243 states and 27689 transitions. Second operand 9 states. [2020-07-20 15:06:28,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 15:06:28,884 INFO L93 Difference]: Finished difference Result 102225 states and 155331 transitions. [2020-07-20 15:06:28,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-07-20 15:06:28,885 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 337 [2020-07-20 15:06:28,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 15:06:28,998 INFO L225 Difference]: With dead ends: 102225 [2020-07-20 15:06:28,998 INFO L226 Difference]: Without dead ends: 98647 [2020-07-20 15:06:29,023 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 331 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 424 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=370, Invalid=1112, Unknown=0, NotChecked=0, Total=1482 [2020-07-20 15:06:29,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98647 states. [2020-07-20 15:06:31,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98647 to 37975. [2020-07-20 15:06:31,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37975 states. [2020-07-20 15:06:31,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37975 states to 37975 states and 57497 transitions. [2020-07-20 15:06:31,870 INFO L78 Accepts]: Start accepts. Automaton has 37975 states and 57497 transitions. Word has length 337 [2020-07-20 15:06:31,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 15:06:31,871 INFO L479 AbstractCegarLoop]: Abstraction has 37975 states and 57497 transitions. [2020-07-20 15:06:31,871 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-20 15:06:31,871 INFO L276 IsEmpty]: Start isEmpty. Operand 37975 states and 57497 transitions. [2020-07-20 15:06:31,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2020-07-20 15:06:31,900 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 15:06:31,901 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 15:06:32,114 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 15:06:32,115 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 15:06:32,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 15:06:32,116 INFO L82 PathProgramCache]: Analyzing trace with hash 846435566, now seen corresponding path program 1 times [2020-07-20 15:06:32,116 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 15:06:32,117 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1169723185] [2020-07-20 15:06:32,117 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 15:06:32,389 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-20 15:06:32,389 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 15:06:32,392 INFO L263 TraceCheckSpWp]: Trace formula consists of 1164 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-20 15:06:32,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 15:06:32,626 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 15:06:32,626 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 15:06:32,627 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1169723185] [2020-07-20 15:06:32,627 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 15:06:32,627 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 15:06:32,627 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438794502] [2020-07-20 15:06:32,627 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 15:06:32,628 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 15:06:32,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 15:06:32,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 15:06:32,628 INFO L87 Difference]: Start difference. First operand 37975 states and 57497 transitions. Second operand 3 states. [2020-07-20 15:06:34,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 15:06:34,816 INFO L93 Difference]: Finished difference Result 80215 states and 121734 transitions. [2020-07-20 15:06:34,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 15:06:34,816 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 337 [2020-07-20 15:06:34,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 15:06:34,872 INFO L225 Difference]: With dead ends: 80215 [2020-07-20 15:06:34,872 INFO L226 Difference]: Without dead ends: 49649 [2020-07-20 15:06:34,899 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 335 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 15:06:34,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49649 states. [2020-07-20 15:06:38,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49649 to 43687. [2020-07-20 15:06:38,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43687 states. [2020-07-20 15:06:38,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43687 states to 43687 states and 66785 transitions. [2020-07-20 15:06:38,130 INFO L78 Accepts]: Start accepts. Automaton has 43687 states and 66785 transitions. Word has length 337 [2020-07-20 15:06:38,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 15:06:38,131 INFO L479 AbstractCegarLoop]: Abstraction has 43687 states and 66785 transitions. [2020-07-20 15:06:38,131 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 15:06:38,131 INFO L276 IsEmpty]: Start isEmpty. Operand 43687 states and 66785 transitions. [2020-07-20 15:06:38,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2020-07-20 15:06:38,166 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 15:06:38,166 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 15:06:38,380 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 15:06:38,381 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 15:06:38,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 15:06:38,382 INFO L82 PathProgramCache]: Analyzing trace with hash 1248970567, now seen corresponding path program 1 times [2020-07-20 15:06:38,383 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 15:06:38,383 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1113615755] [2020-07-20 15:06:38,384 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 15:06:38,625 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-20 15:06:38,625 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 15:06:38,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 1017 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-20 15:06:38,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 15:06:38,691 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 15:06:38,691 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 15:06:38,691 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1113615755] [2020-07-20 15:06:38,692 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 15:06:38,692 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 15:06:38,692 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987480015] [2020-07-20 15:06:38,692 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 15:06:38,692 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 15:06:38,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 15:06:38,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 15:06:38,693 INFO L87 Difference]: Start difference. First operand 43687 states and 66785 transitions. Second operand 3 states. [2020-07-20 15:06:42,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 15:06:42,092 INFO L93 Difference]: Finished difference Result 122500 states and 186043 transitions. [2020-07-20 15:06:42,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 15:06:42,092 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 338 [2020-07-20 15:06:42,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 15:06:42,221 INFO L225 Difference]: With dead ends: 122500 [2020-07-20 15:06:42,222 INFO L226 Difference]: Without dead ends: 83149 [2020-07-20 15:06:42,287 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 337 GetRequests, 336 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 15:06:42,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83149 states. [2020-07-20 15:06:44,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83149 to 44231. [2020-07-20 15:06:44,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44231 states. [2020-07-20 15:06:44,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44231 states to 44231 states and 67428 transitions. [2020-07-20 15:06:44,676 INFO L78 Accepts]: Start accepts. Automaton has 44231 states and 67428 transitions. Word has length 338 [2020-07-20 15:06:44,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 15:06:44,676 INFO L479 AbstractCegarLoop]: Abstraction has 44231 states and 67428 transitions. [2020-07-20 15:06:44,676 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 15:06:44,676 INFO L276 IsEmpty]: Start isEmpty. Operand 44231 states and 67428 transitions. [2020-07-20 15:06:44,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2020-07-20 15:06:44,702 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 15:06:44,703 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 15:06:44,903 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 15:06:44,904 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 15:06:44,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 15:06:44,904 INFO L82 PathProgramCache]: Analyzing trace with hash 1157935225, now seen corresponding path program 1 times [2020-07-20 15:06:44,905 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 15:06:44,905 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [529970229] [2020-07-20 15:06:44,905 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 15:06:45,152 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-20 15:06:45,153 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 15:06:45,156 INFO L263 TraceCheckSpWp]: Trace formula consists of 1020 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-20 15:06:45,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 15:06:45,213 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 15:06:45,214 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 15:06:45,214 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [529970229] [2020-07-20 15:06:45,214 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 15:06:45,214 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 15:06:45,215 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784159433] [2020-07-20 15:06:45,215 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 15:06:45,215 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 15:06:45,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 15:06:45,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 15:06:45,216 INFO L87 Difference]: Start difference. First operand 44231 states and 67428 transitions. Second operand 4 states. [2020-07-20 15:06:49,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 15:06:49,734 INFO L93 Difference]: Finished difference Result 120755 states and 183328 transitions. [2020-07-20 15:06:49,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 15:06:49,735 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 339 [2020-07-20 15:06:49,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 15:06:49,830 INFO L225 Difference]: With dead ends: 120755 [2020-07-20 15:06:49,831 INFO L226 Difference]: Without dead ends: 81217 [2020-07-20 15:06:49,881 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 339 GetRequests, 336 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 15:06:49,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81217 states. [2020-07-20 15:06:52,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81217 to 45881. [2020-07-20 15:06:52,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45881 states. [2020-07-20 15:06:52,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45881 states to 45881 states and 70178 transitions. [2020-07-20 15:06:52,162 INFO L78 Accepts]: Start accepts. Automaton has 45881 states and 70178 transitions. Word has length 339 [2020-07-20 15:06:52,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 15:06:52,163 INFO L479 AbstractCegarLoop]: Abstraction has 45881 states and 70178 transitions. [2020-07-20 15:06:52,163 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 15:06:52,163 INFO L276 IsEmpty]: Start isEmpty. Operand 45881 states and 70178 transitions. [2020-07-20 15:06:52,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2020-07-20 15:06:52,191 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 15:06:52,191 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 15:06:52,391 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 15:06:52,392 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 15:06:52,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 15:06:52,393 INFO L82 PathProgramCache]: Analyzing trace with hash 559423149, now seen corresponding path program 1 times [2020-07-20 15:06:52,393 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 15:06:52,394 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [769118825] [2020-07-20 15:06:52,394 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 15:06:52,661 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-20 15:06:52,661 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 15:06:52,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 1165 conjuncts, 21 conjunts are in the unsatisfiable core [2020-07-20 15:06:52,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 15:06:52,957 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2020-07-20 15:06:53,220 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-07-20 15:06:54,525 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 15:06:54,525 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 15:06:54,525 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [769118825] [2020-07-20 15:06:54,525 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 15:06:54,526 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-07-20 15:06:54,526 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532868196] [2020-07-20 15:06:54,527 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-20 15:06:54,527 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 15:06:54,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-20 15:06:54,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-07-20 15:06:54,527 INFO L87 Difference]: Start difference. First operand 45881 states and 70178 transitions. Second operand 10 states. [2020-07-20 15:07:06,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 15:07:06,843 INFO L93 Difference]: Finished difference Result 143031 states and 219612 transitions. [2020-07-20 15:07:06,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-07-20 15:07:06,844 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 340 [2020-07-20 15:07:06,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 15:07:07,003 INFO L225 Difference]: With dead ends: 143031 [2020-07-20 15:07:07,004 INFO L226 Difference]: Without dead ends: 133587 [2020-07-20 15:07:07,045 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 345 GetRequests, 315 SyntacticMatches, 16 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2020-07-20 15:07:07,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133587 states. [2020-07-20 15:07:12,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133587 to 66057. [2020-07-20 15:07:12,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66057 states. [2020-07-20 15:07:12,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66057 states to 66057 states and 100800 transitions. [2020-07-20 15:07:12,202 INFO L78 Accepts]: Start accepts. Automaton has 66057 states and 100800 transitions. Word has length 340 [2020-07-20 15:07:12,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 15:07:12,203 INFO L479 AbstractCegarLoop]: Abstraction has 66057 states and 100800 transitions. [2020-07-20 15:07:12,203 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-20 15:07:12,203 INFO L276 IsEmpty]: Start isEmpty. Operand 66057 states and 100800 transitions. [2020-07-20 15:07:12,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2020-07-20 15:07:12,238 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 15:07:12,238 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 15:07:12,439 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 15:07:12,439 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 15:07:12,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 15:07:12,440 INFO L82 PathProgramCache]: Analyzing trace with hash -575620131, now seen corresponding path program 1 times [2020-07-20 15:07:12,441 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 15:07:12,441 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1003054431] [2020-07-20 15:07:12,442 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 15:07:12,738 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 15:07:12,738 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 15:07:12,742 INFO L263 TraceCheckSpWp]: Trace formula consists of 1307 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-20 15:07:12,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 15:07:12,845 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 15:07:12,845 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 15:07:12,845 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1003054431] [2020-07-20 15:07:12,845 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 15:07:12,846 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 15:07:12,846 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295689636] [2020-07-20 15:07:12,846 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 15:07:12,847 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 15:07:12,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 15:07:12,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 15:07:12,847 INFO L87 Difference]: Start difference. First operand 66057 states and 100800 transitions. Second operand 3 states. [2020-07-20 15:07:22,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 15:07:22,634 INFO L93 Difference]: Finished difference Result 185731 states and 281631 transitions. [2020-07-20 15:07:22,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 15:07:22,635 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 340 [2020-07-20 15:07:22,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 15:07:22,780 INFO L225 Difference]: With dead ends: 185731 [2020-07-20 15:07:22,780 INFO L226 Difference]: Without dead ends: 125864 [2020-07-20 15:07:22,833 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 339 GetRequests, 338 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 15:07:22,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125864 states. [2020-07-20 15:07:31,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125864 to 125586. [2020-07-20 15:07:31,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125586 states. [2020-07-20 15:07:31,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125586 states to 125586 states and 189628 transitions. [2020-07-20 15:07:31,630 INFO L78 Accepts]: Start accepts. Automaton has 125586 states and 189628 transitions. Word has length 340 [2020-07-20 15:07:31,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 15:07:31,630 INFO L479 AbstractCegarLoop]: Abstraction has 125586 states and 189628 transitions. [2020-07-20 15:07:31,630 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 15:07:31,630 INFO L276 IsEmpty]: Start isEmpty. Operand 125586 states and 189628 transitions. [2020-07-20 15:07:31,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2020-07-20 15:07:31,714 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 15:07:31,714 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 15:07:31,914 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 15:07:31,915 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 15:07:31,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 15:07:31,916 INFO L82 PathProgramCache]: Analyzing trace with hash -1668647690, now seen corresponding path program 1 times [2020-07-20 15:07:31,916 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 15:07:31,917 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1601539249] [2020-07-20 15:07:31,917 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 15:07:32,181 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-20 15:07:32,181 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 15:07:32,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 1162 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-20 15:07:32,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 15:07:32,259 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 15:07:32,259 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 15:07:32,259 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1601539249] [2020-07-20 15:07:32,259 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 15:07:32,260 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 15:07:32,260 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974826791] [2020-07-20 15:07:32,261 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 15:07:32,261 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 15:07:32,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 15:07:32,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 15:07:32,261 INFO L87 Difference]: Start difference. First operand 125586 states and 189628 transitions. Second operand 4 states. [2020-07-20 15:07:42,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 15:07:42,472 INFO L93 Difference]: Finished difference Result 242617 states and 365501 transitions. [2020-07-20 15:07:42,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 15:07:42,473 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 340 [2020-07-20 15:07:42,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 15:07:42,608 INFO L225 Difference]: With dead ends: 242617 [2020-07-20 15:07:42,608 INFO L226 Difference]: Without dead ends: 123476 [2020-07-20 15:07:42,687 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 340 GetRequests, 337 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 15:07:42,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123476 states. [2020-07-20 15:07:53,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123476 to 123344. [2020-07-20 15:07:53,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123344 states. [2020-07-20 15:07:54,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123344 states to 123344 states and 186037 transitions. [2020-07-20 15:07:54,045 INFO L78 Accepts]: Start accepts. Automaton has 123344 states and 186037 transitions. Word has length 340 [2020-07-20 15:07:54,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 15:07:54,045 INFO L479 AbstractCegarLoop]: Abstraction has 123344 states and 186037 transitions. [2020-07-20 15:07:54,045 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 15:07:54,045 INFO L276 IsEmpty]: Start isEmpty. Operand 123344 states and 186037 transitions. [2020-07-20 15:07:54,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2020-07-20 15:07:54,116 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 15:07:54,116 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 15:07:54,316 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 15:07:54,317 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 15:07:54,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 15:07:54,317 INFO L82 PathProgramCache]: Analyzing trace with hash 490838967, now seen corresponding path program 1 times [2020-07-20 15:07:54,318 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 15:07:54,318 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1922161702] [2020-07-20 15:07:54,318 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 15:07:54,569 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-20 15:07:54,569 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 15:07:54,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 1036 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-20 15:07:54,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 15:07:54,691 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 15:07:54,691 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 15:07:54,692 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1922161702] [2020-07-20 15:07:54,692 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 15:07:54,692 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-07-20 15:07:54,692 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691862783] [2020-07-20 15:07:54,693 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-20 15:07:54,693 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 15:07:54,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-20 15:07:54,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-07-20 15:07:54,693 INFO L87 Difference]: Start difference. First operand 123344 states and 186037 transitions. Second operand 9 states. [2020-07-20 15:09:15,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 15:09:15,440 INFO L93 Difference]: Finished difference Result 857818 states and 1310137 transitions. [2020-07-20 15:09:15,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-07-20 15:09:15,440 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 340 [2020-07-20 15:09:15,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 15:09:16,764 INFO L225 Difference]: With dead ends: 857818 [2020-07-20 15:09:16,764 INFO L226 Difference]: Without dead ends: 815028 [2020-07-20 15:09:16,928 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 383 GetRequests, 347 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 381 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=352, Invalid=1054, Unknown=0, NotChecked=0, Total=1406 [2020-07-20 15:09:17,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 815028 states. [2020-07-20 15:09:52,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 815028 to 282828. [2020-07-20 15:09:52,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 282828 states. [2020-07-20 15:09:52,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282828 states to 282828 states and 430771 transitions. [2020-07-20 15:09:52,968 INFO L78 Accepts]: Start accepts. Automaton has 282828 states and 430771 transitions. Word has length 340 [2020-07-20 15:09:52,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 15:09:52,969 INFO L479 AbstractCegarLoop]: Abstraction has 282828 states and 430771 transitions. [2020-07-20 15:09:52,969 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-20 15:09:52,969 INFO L276 IsEmpty]: Start isEmpty. Operand 282828 states and 430771 transitions. [2020-07-20 15:09:53,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2020-07-20 15:09:53,111 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 15:09:53,112 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 15:09:53,312 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 15:09:53,313 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 15:09:53,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 15:09:53,313 INFO L82 PathProgramCache]: Analyzing trace with hash -944827968, now seen corresponding path program 1 times [2020-07-20 15:09:53,314 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 15:09:53,314 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [482768814] [2020-07-20 15:09:53,314 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 15:09:53,593 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-20 15:09:53,594 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 15:09:53,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 1168 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 15:09:53,602 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 15:09:53,729 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 15:09:53,730 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 15:09:53,730 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [482768814] [2020-07-20 15:09:53,730 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 15:09:53,730 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 15:09:53,731 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783405869] [2020-07-20 15:09:53,731 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 15:09:53,731 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 15:09:53,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 15:09:53,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 15:09:53,732 INFO L87 Difference]: Start difference. First operand 282828 states and 430771 transitions. Second operand 4 states. [2020-07-20 15:10:45,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 15:10:45,344 INFO L93 Difference]: Finished difference Result 800896 states and 1218087 transitions. [2020-07-20 15:10:45,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 15:10:45,345 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 340 [2020-07-20 15:10:45,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 15:10:46,113 INFO L225 Difference]: With dead ends: 800896 [2020-07-20 15:10:46,113 INFO L226 Difference]: Without dead ends: 520471 [2020-07-20 15:10:46,395 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 340 GetRequests, 337 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 15:10:46,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 520471 states. [2020-07-20 15:11:47,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 520471 to 520121. [2020-07-20 15:11:47,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 520121 states. [2020-07-20 15:11:48,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 520121 states to 520121 states and 786860 transitions. [2020-07-20 15:11:48,845 INFO L78 Accepts]: Start accepts. Automaton has 520121 states and 786860 transitions. Word has length 340 [2020-07-20 15:11:48,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 15:11:48,845 INFO L479 AbstractCegarLoop]: Abstraction has 520121 states and 786860 transitions. [2020-07-20 15:11:48,845 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 15:11:48,845 INFO L276 IsEmpty]: Start isEmpty. Operand 520121 states and 786860 transitions. [2020-07-20 15:11:49,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2020-07-20 15:11:49,099 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 15:11:49,099 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 15:11:49,305 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 15:11:49,306 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 15:11:49,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 15:11:49,307 INFO L82 PathProgramCache]: Analyzing trace with hash 1375429041, now seen corresponding path program 1 times [2020-07-20 15:11:49,307 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 15:11:49,307 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [926011018] [2020-07-20 15:11:49,308 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 15:11:49,602 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 15:11:49,602 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 15:11:49,606 INFO L263 TraceCheckSpWp]: Trace formula consists of 1313 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-20 15:11:49,610 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 15:11:49,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 15:11:49,714 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 15:11:49,714 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [926011018] [2020-07-20 15:11:49,714 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 15:11:49,714 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-07-20 15:11:49,714 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355946888] [2020-07-20 15:11:49,715 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-20 15:11:49,715 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 15:11:49,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-20 15:11:49,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-07-20 15:11:49,716 INFO L87 Difference]: Start difference. First operand 520121 states and 786860 transitions. Second operand 9 states. [2020-07-20 15:13:59,023 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 8