/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks NOT_INCREMENTALLY -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 12:31:37,207 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 12:31:37,209 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 12:31:37,226 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 12:31:37,226 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 12:31:37,227 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 12:31:37,229 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 12:31:37,230 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 12:31:37,232 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 12:31:37,233 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 12:31:37,234 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 12:31:37,235 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 12:31:37,235 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 12:31:37,236 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 12:31:37,237 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 12:31:37,238 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 12:31:37,239 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 12:31:37,240 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 12:31:37,241 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 12:31:37,243 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 12:31:37,244 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 12:31:37,245 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 12:31:37,246 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 12:31:37,247 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 12:31:37,249 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 12:31:37,256 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 12:31:37,257 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 12:31:37,257 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 12:31:37,258 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-20 12:31:37,272 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 12:31:37,272 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 12:31:37,273 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 12:31:37,273 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 12:31:37,273 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 12:31:37,274 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 12:31:37,274 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 12:31:37,274 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 12:31:37,274 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 12:31:37,274 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 12:31:37,274 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 12:31:37,275 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 12:31:37,275 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 12:31:37,275 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 12:31:37,275 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 12:31:37,275 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 12:31:37,276 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 12:31:37,276 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 12:31:37,276 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 12:31:37,276 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 12:31:37,276 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 12:31:37,277 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 12:31:37,277 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 12:31:37,277 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 12:31:37,277 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 12:31:37,277 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 12:31:37,278 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 12:31:37,278 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 12:31:37,278 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 12:31:37,278 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> NOT_INCREMENTALLY [2020-07-20 12:31:37,576 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 12:31:37,589 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 12:31:37,592 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 12:31:37,593 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 12:31:37,594 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 12:31:37,594 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-07-20 12:31:37,664 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b1b731119/8ae13cdc8e98451b9c03266ce15a07bf/FLAG780f570f3 [2020-07-20 12:31:38,340 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 12:31:38,341 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-07-20 12:31:38,371 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b1b731119/8ae13cdc8e98451b9c03266ce15a07bf/FLAG780f570f3 [2020-07-20 12:31:38,500 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b1b731119/8ae13cdc8e98451b9c03266ce15a07bf [2020-07-20 12:31:38,510 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 12:31:38,513 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 12:31:38,514 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 12:31:38,514 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 12:31:38,518 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 12:31:38,519 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 12:31:38" (1/1) ... [2020-07-20 12:31:38,522 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@729ee2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:31:38, skipping insertion in model container [2020-07-20 12:31:38,523 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 12:31:38" (1/1) ... [2020-07-20 12:31:38,530 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 12:31:38,706 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 12:31:40,114 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 12:31:40,126 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 12:31:41,006 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 12:31:41,045 INFO L208 MainTranslator]: Completed translation [2020-07-20 12:31:41,045 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:31:41 WrapperNode [2020-07-20 12:31:41,046 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 12:31:41,047 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 12:31:41,047 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 12:31:41,047 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 12:31:41,068 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:31:41" (1/1) ... [2020-07-20 12:31:41,080 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:31:41" (1/1) ... [2020-07-20 12:31:41,135 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:31:41" (1/1) ... [2020-07-20 12:31:41,136 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:31:41" (1/1) ... [2020-07-20 12:31:41,209 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:31:41" (1/1) ... [2020-07-20 12:31:41,241 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:31:41" (1/1) ... [2020-07-20 12:31:41,250 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:31:41" (1/1) ... [2020-07-20 12:31:41,263 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 12:31:41,263 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 12:31:41,264 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 12:31:41,264 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 12:31:41,268 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:31:41" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 12:31:41,340 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 12:31:41,341 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 12:31:41,341 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-20 12:31:41,341 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 12:31:41,341 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 12:31:41,341 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-07-20 12:31:41,342 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-07-20 12:31:41,342 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-07-20 12:31:41,343 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-07-20 12:31:41,343 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-20 12:31:41,343 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-20 12:31:41,344 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-07-20 12:31:41,344 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-07-20 12:31:41,345 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-07-20 12:31:41,345 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-07-20 12:31:41,346 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-07-20 12:31:41,346 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-07-20 12:31:41,346 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-07-20 12:31:41,346 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-07-20 12:31:41,347 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 12:31:41,347 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 12:31:41,347 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 12:31:44,277 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 12:31:44,278 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-20 12:31:44,288 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 12:31:44 BoogieIcfgContainer [2020-07-20 12:31:44,288 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 12:31:44,290 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 12:31:44,290 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 12:31:44,293 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 12:31:44,293 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 12:31:38" (1/3) ... [2020-07-20 12:31:44,294 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6960585 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 12:31:44, skipping insertion in model container [2020-07-20 12:31:44,294 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:31:41" (2/3) ... [2020-07-20 12:31:44,295 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6960585 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 12:31:44, skipping insertion in model container [2020-07-20 12:31:44,295 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 12:31:44" (3/3) ... [2020-07-20 12:31:44,297 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-07-20 12:31:44,308 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 12:31:44,317 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 12 error locations. [2020-07-20 12:31:44,332 INFO L251 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2020-07-20 12:31:44,362 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 12:31:44,362 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 12:31:44,362 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 12:31:44,362 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 12:31:44,362 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 12:31:44,362 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 12:31:44,363 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 12:31:44,363 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 12:31:44,399 INFO L276 IsEmpty]: Start isEmpty. Operand 1016 states. [2020-07-20 12:31:44,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2020-07-20 12:31:44,428 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 12:31:44,430 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 12:31:44,430 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 12:31:44,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 12:31:44,437 INFO L82 PathProgramCache]: Analyzing trace with hash -179235525, now seen corresponding path program 1 times [2020-07-20 12:31:44,447 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 12:31:44,447 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1832636553] [2020-07-20 12:31:44,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 12:31:44,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 12:31:45,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 2204 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-20 12:31:45,023 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 12:31:45,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 12:31:45,247 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 12:31:45,248 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1832636553] [2020-07-20 12:31:45,249 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 12:31:45,249 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 12:31:45,250 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846559685] [2020-07-20 12:31:45,256 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 12:31:45,256 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 12:31:45,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 12:31:45,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 12:31:45,273 INFO L87 Difference]: Start difference. First operand 1016 states. Second operand 3 states. [2020-07-20 12:31:45,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 12:31:45,550 INFO L93 Difference]: Finished difference Result 1776 states and 3147 transitions. [2020-07-20 12:31:45,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 12:31:45,553 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 324 [2020-07-20 12:31:45,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 12:31:45,593 INFO L225 Difference]: With dead ends: 1776 [2020-07-20 12:31:45,594 INFO L226 Difference]: Without dead ends: 1481 [2020-07-20 12:31:45,605 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 322 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 12:31:45,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1481 states. [2020-07-20 12:31:45,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1481 to 1479. [2020-07-20 12:31:45,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1479 states. [2020-07-20 12:31:45,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1479 states to 1479 states and 2266 transitions. [2020-07-20 12:31:45,762 INFO L78 Accepts]: Start accepts. Automaton has 1479 states and 2266 transitions. Word has length 324 [2020-07-20 12:31:45,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 12:31:45,766 INFO L479 AbstractCegarLoop]: Abstraction has 1479 states and 2266 transitions. [2020-07-20 12:31:45,766 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 12:31:45,767 INFO L276 IsEmpty]: Start isEmpty. Operand 1479 states and 2266 transitions. [2020-07-20 12:31:45,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2020-07-20 12:31:45,779 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 12:31:45,780 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 12:31:45,996 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 12:31:45,996 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 12:31:45,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 12:31:45,997 INFO L82 PathProgramCache]: Analyzing trace with hash -220420006, now seen corresponding path program 1 times [2020-07-20 12:31:45,997 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 12:31:45,997 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1081867772] [2020-07-20 12:31:45,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 12:31:46,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 12:31:46,384 INFO L263 TraceCheckSpWp]: Trace formula consists of 2204 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-20 12:31:46,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 12:31:46,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 12:31:46,529 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 12:31:46,529 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1081867772] [2020-07-20 12:31:46,529 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 12:31:46,530 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 12:31:46,530 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715001770] [2020-07-20 12:31:46,532 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 12:31:46,532 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 12:31:46,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 12:31:46,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 12:31:46,533 INFO L87 Difference]: Start difference. First operand 1479 states and 2266 transitions. Second operand 3 states. [2020-07-20 12:31:46,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 12:31:46,807 INFO L93 Difference]: Finished difference Result 2852 states and 4423 transitions. [2020-07-20 12:31:46,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 12:31:46,807 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 324 [2020-07-20 12:31:46,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 12:31:46,822 INFO L225 Difference]: With dead ends: 2852 [2020-07-20 12:31:46,822 INFO L226 Difference]: Without dead ends: 2439 [2020-07-20 12:31:46,825 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 322 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 12:31:46,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2439 states. [2020-07-20 12:31:46,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2439 to 2437. [2020-07-20 12:31:46,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2437 states. [2020-07-20 12:31:46,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2437 states to 2437 states and 3757 transitions. [2020-07-20 12:31:46,898 INFO L78 Accepts]: Start accepts. Automaton has 2437 states and 3757 transitions. Word has length 324 [2020-07-20 12:31:46,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 12:31:46,898 INFO L479 AbstractCegarLoop]: Abstraction has 2437 states and 3757 transitions. [2020-07-20 12:31:46,899 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 12:31:46,899 INFO L276 IsEmpty]: Start isEmpty. Operand 2437 states and 3757 transitions. [2020-07-20 12:31:46,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2020-07-20 12:31:46,907 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 12:31:46,907 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 12:31:47,121 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 12:31:47,122 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 12:31:47,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 12:31:47,123 INFO L82 PathProgramCache]: Analyzing trace with hash -578874774, now seen corresponding path program 1 times [2020-07-20 12:31:47,123 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 12:31:47,123 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2031951873] [2020-07-20 12:31:47,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 12:31:47,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 12:31:47,501 INFO L263 TraceCheckSpWp]: Trace formula consists of 2205 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 12:31:47,509 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 12:31:47,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 12:31:47,744 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 12:31:47,745 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2031951873] [2020-07-20 12:31:47,745 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 12:31:47,745 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 12:31:47,746 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324004821] [2020-07-20 12:31:47,747 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 12:31:47,747 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 12:31:47,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 12:31:47,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 12:31:47,748 INFO L87 Difference]: Start difference. First operand 2437 states and 3757 transitions. Second operand 4 states. [2020-07-20 12:31:48,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 12:31:48,051 INFO L93 Difference]: Finished difference Result 7197 states and 11082 transitions. [2020-07-20 12:31:48,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 12:31:48,052 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 324 [2020-07-20 12:31:48,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 12:31:48,075 INFO L225 Difference]: With dead ends: 7197 [2020-07-20 12:31:48,075 INFO L226 Difference]: Without dead ends: 4773 [2020-07-20 12:31:48,081 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 12:31:48,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4773 states. [2020-07-20 12:31:48,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4773 to 4663. [2020-07-20 12:31:48,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4663 states. [2020-07-20 12:31:48,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4663 states to 4663 states and 7172 transitions. [2020-07-20 12:31:48,254 INFO L78 Accepts]: Start accepts. Automaton has 4663 states and 7172 transitions. Word has length 324 [2020-07-20 12:31:48,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 12:31:48,255 INFO L479 AbstractCegarLoop]: Abstraction has 4663 states and 7172 transitions. [2020-07-20 12:31:48,255 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 12:31:48,255 INFO L276 IsEmpty]: Start isEmpty. Operand 4663 states and 7172 transitions. [2020-07-20 12:31:48,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2020-07-20 12:31:48,267 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 12:31:48,267 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 12:31:48,480 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 12:31:48,481 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 12:31:48,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 12:31:48,481 INFO L82 PathProgramCache]: Analyzing trace with hash 1662773952, now seen corresponding path program 1 times [2020-07-20 12:31:48,482 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 12:31:48,482 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1442227263] [2020-07-20 12:31:48,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 12:31:48,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 12:31:48,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 2210 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-20 12:31:48,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 12:31:48,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 12:31:48,945 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 12:31:48,945 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1442227263] [2020-07-20 12:31:48,945 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 12:31:48,946 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 12:31:48,946 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912749000] [2020-07-20 12:31:48,947 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 12:31:48,947 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 12:31:48,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 12:31:48,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 12:31:48,948 INFO L87 Difference]: Start difference. First operand 4663 states and 7172 transitions. Second operand 3 states. [2020-07-20 12:31:49,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 12:31:49,231 INFO L93 Difference]: Finished difference Result 13948 states and 21452 transitions. [2020-07-20 12:31:49,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 12:31:49,231 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 326 [2020-07-20 12:31:49,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 12:31:49,273 INFO L225 Difference]: With dead ends: 13948 [2020-07-20 12:31:49,273 INFO L226 Difference]: Without dead ends: 9308 [2020-07-20 12:31:49,284 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 12:31:49,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9308 states. [2020-07-20 12:31:49,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9308 to 4674. [2020-07-20 12:31:49,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4674 states. [2020-07-20 12:31:49,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4674 states to 4674 states and 7188 transitions. [2020-07-20 12:31:49,554 INFO L78 Accepts]: Start accepts. Automaton has 4674 states and 7188 transitions. Word has length 326 [2020-07-20 12:31:49,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 12:31:49,555 INFO L479 AbstractCegarLoop]: Abstraction has 4674 states and 7188 transitions. [2020-07-20 12:31:49,555 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 12:31:49,555 INFO L276 IsEmpty]: Start isEmpty. Operand 4674 states and 7188 transitions. [2020-07-20 12:31:49,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2020-07-20 12:31:49,567 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 12:31:49,567 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 12:31:49,781 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 12:31:49,782 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 12:31:49,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 12:31:49,782 INFO L82 PathProgramCache]: Analyzing trace with hash 1615757819, now seen corresponding path program 1 times [2020-07-20 12:31:49,783 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 12:31:49,783 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [640114989] [2020-07-20 12:31:49,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 12:31:50,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 12:31:50,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 2208 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-20 12:31:50,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 12:31:50,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 12:31:50,342 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 12:31:50,342 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [640114989] [2020-07-20 12:31:50,342 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 12:31:50,342 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 12:31:50,343 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547403900] [2020-07-20 12:31:50,344 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 12:31:50,344 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 12:31:50,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 12:31:50,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 12:31:50,344 INFO L87 Difference]: Start difference. First operand 4674 states and 7188 transitions. Second operand 3 states. [2020-07-20 12:31:50,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 12:31:50,666 INFO L93 Difference]: Finished difference Result 13664 states and 20954 transitions. [2020-07-20 12:31:50,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 12:31:50,666 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 326 [2020-07-20 12:31:50,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 12:31:50,709 INFO L225 Difference]: With dead ends: 13664 [2020-07-20 12:31:50,709 INFO L226 Difference]: Without dead ends: 9141 [2020-07-20 12:31:50,720 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 12:31:50,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9141 states. [2020-07-20 12:31:51,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9141 to 9035. [2020-07-20 12:31:51,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9035 states. [2020-07-20 12:31:51,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9035 states to 9035 states and 13835 transitions. [2020-07-20 12:31:51,053 INFO L78 Accepts]: Start accepts. Automaton has 9035 states and 13835 transitions. Word has length 326 [2020-07-20 12:31:51,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 12:31:51,054 INFO L479 AbstractCegarLoop]: Abstraction has 9035 states and 13835 transitions. [2020-07-20 12:31:51,054 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 12:31:51,054 INFO L276 IsEmpty]: Start isEmpty. Operand 9035 states and 13835 transitions. [2020-07-20 12:31:51,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2020-07-20 12:31:51,073 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 12:31:51,073 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 12:31:51,286 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 12:31:51,287 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 12:31:51,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 12:31:51,287 INFO L82 PathProgramCache]: Analyzing trace with hash -430894979, now seen corresponding path program 1 times [2020-07-20 12:31:51,288 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 12:31:51,288 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1035804266] [2020-07-20 12:31:51,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 12:31:51,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 12:31:51,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 2211 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-20 12:31:51,654 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 12:31:52,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 12:31:52,149 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 12:31:52,149 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1035804266] [2020-07-20 12:31:52,149 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 12:31:52,150 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 12:31:52,150 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147667688] [2020-07-20 12:31:52,151 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 12:31:52,151 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 12:31:52,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 12:31:52,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 12:31:52,152 INFO L87 Difference]: Start difference. First operand 9035 states and 13835 transitions. Second operand 3 states. [2020-07-20 12:31:52,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 12:31:52,598 INFO L93 Difference]: Finished difference Result 27010 states and 41351 transitions. [2020-07-20 12:31:52,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 12:31:52,599 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 327 [2020-07-20 12:31:52,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 12:31:52,647 INFO L225 Difference]: With dead ends: 27010 [2020-07-20 12:31:52,647 INFO L226 Difference]: Without dead ends: 18025 [2020-07-20 12:31:52,669 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 325 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 12:31:52,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18025 states. [2020-07-20 12:31:53,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18025 to 9051. [2020-07-20 12:31:53,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9051 states. [2020-07-20 12:31:53,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9051 states to 9051 states and 13854 transitions. [2020-07-20 12:31:53,061 INFO L78 Accepts]: Start accepts. Automaton has 9051 states and 13854 transitions. Word has length 327 [2020-07-20 12:31:53,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 12:31:53,061 INFO L479 AbstractCegarLoop]: Abstraction has 9051 states and 13854 transitions. [2020-07-20 12:31:53,062 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 12:31:53,062 INFO L276 IsEmpty]: Start isEmpty. Operand 9051 states and 13854 transitions. [2020-07-20 12:31:53,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2020-07-20 12:31:53,081 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 12:31:53,081 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 12:31:53,294 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 12:31:53,295 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 12:31:53,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 12:31:53,295 INFO L82 PathProgramCache]: Analyzing trace with hash 586921046, now seen corresponding path program 1 times [2020-07-20 12:31:53,296 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 12:31:53,296 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1550327043] [2020-07-20 12:31:53,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 12:31:53,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 12:31:53,681 INFO L263 TraceCheckSpWp]: Trace formula consists of 2211 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-20 12:31:53,688 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 12:31:53,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 12:31:53,852 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 12:31:53,852 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1550327043] [2020-07-20 12:31:53,853 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 12:31:53,853 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 12:31:53,853 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145548668] [2020-07-20 12:31:53,854 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 12:31:53,854 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 12:31:53,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 12:31:53,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 12:31:53,855 INFO L87 Difference]: Start difference. First operand 9051 states and 13854 transitions. Second operand 3 states. [2020-07-20 12:31:54,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 12:31:54,356 INFO L93 Difference]: Finished difference Result 25633 states and 39149 transitions. [2020-07-20 12:31:54,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 12:31:54,357 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 328 [2020-07-20 12:31:54,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 12:31:54,393 INFO L225 Difference]: With dead ends: 25633 [2020-07-20 12:31:54,393 INFO L226 Difference]: Without dead ends: 16779 [2020-07-20 12:31:54,414 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 327 GetRequests, 326 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 12:31:54,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16779 states. [2020-07-20 12:31:55,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16779 to 16677. [2020-07-20 12:31:55,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16677 states. [2020-07-20 12:31:55,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16677 states to 16677 states and 25376 transitions. [2020-07-20 12:31:55,107 INFO L78 Accepts]: Start accepts. Automaton has 16677 states and 25376 transitions. Word has length 328 [2020-07-20 12:31:55,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 12:31:55,108 INFO L479 AbstractCegarLoop]: Abstraction has 16677 states and 25376 transitions. [2020-07-20 12:31:55,108 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 12:31:55,108 INFO L276 IsEmpty]: Start isEmpty. Operand 16677 states and 25376 transitions. [2020-07-20 12:31:55,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2020-07-20 12:31:55,138 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 12:31:55,139 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 12:31:55,351 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 12:31:55,352 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 12:31:55,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 12:31:55,352 INFO L82 PathProgramCache]: Analyzing trace with hash 1527346803, now seen corresponding path program 1 times [2020-07-20 12:31:55,353 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 12:31:55,353 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1172462555] [2020-07-20 12:31:55,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 12:31:55,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 12:31:55,681 INFO L263 TraceCheckSpWp]: Trace formula consists of 2212 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-20 12:31:55,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 12:31:55,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 12:31:55,751 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 12:31:55,751 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1172462555] [2020-07-20 12:31:55,751 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 12:31:55,751 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 12:31:55,751 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78115507] [2020-07-20 12:31:55,752 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 12:31:55,752 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 12:31:55,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 12:31:55,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 12:31:55,753 INFO L87 Difference]: Start difference. First operand 16677 states and 25376 transitions. Second operand 4 states. [2020-07-20 12:31:56,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 12:31:56,670 INFO L93 Difference]: Finished difference Result 48080 states and 72951 transitions. [2020-07-20 12:31:56,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 12:31:56,670 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 328 [2020-07-20 12:31:56,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 12:31:56,757 INFO L225 Difference]: With dead ends: 48080 [2020-07-20 12:31:56,758 INFO L226 Difference]: Without dead ends: 31909 [2020-07-20 12:31:56,797 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 12:31:56,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31909 states. [2020-07-20 12:31:57,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31909 to 16926. [2020-07-20 12:31:57,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16926 states. [2020-07-20 12:31:57,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16926 states to 16926 states and 25795 transitions. [2020-07-20 12:31:57,976 INFO L78 Accepts]: Start accepts. Automaton has 16926 states and 25795 transitions. Word has length 328 [2020-07-20 12:31:57,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 12:31:57,976 INFO L479 AbstractCegarLoop]: Abstraction has 16926 states and 25795 transitions. [2020-07-20 12:31:57,976 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 12:31:57,976 INFO L276 IsEmpty]: Start isEmpty. Operand 16926 states and 25795 transitions. [2020-07-20 12:31:58,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2020-07-20 12:31:58,000 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 12:31:58,000 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 12:31:58,213 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 12:31:58,214 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 12:31:58,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 12:31:58,214 INFO L82 PathProgramCache]: Analyzing trace with hash -1453573440, now seen corresponding path program 1 times [2020-07-20 12:31:58,215 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 12:31:58,215 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1810133341] [2020-07-20 12:31:58,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 12:31:58,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 12:31:58,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 2223 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-20 12:31:58,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 12:31:58,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 12:31:58,764 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 12:31:58,765 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1810133341] [2020-07-20 12:31:58,765 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 12:31:58,765 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-07-20 12:31:58,765 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818847272] [2020-07-20 12:31:58,766 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-20 12:31:58,766 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 12:31:58,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-20 12:31:58,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-07-20 12:31:58,767 INFO L87 Difference]: Start difference. First operand 16926 states and 25795 transitions. Second operand 8 states. [2020-07-20 12:32:02,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 12:32:02,105 INFO L93 Difference]: Finished difference Result 52951 states and 81716 transitions. [2020-07-20 12:32:02,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-07-20 12:32:02,108 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 330 [2020-07-20 12:32:02,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 12:32:02,149 INFO L225 Difference]: With dead ends: 52951 [2020-07-20 12:32:02,149 INFO L226 Difference]: Without dead ends: 38060 [2020-07-20 12:32:02,178 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 337 GetRequests, 323 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=154, Unknown=0, NotChecked=0, Total=240 [2020-07-20 12:32:02,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38060 states. [2020-07-20 12:32:03,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38060 to 24634. [2020-07-20 12:32:03,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24634 states. [2020-07-20 12:32:03,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24634 states to 24634 states and 37325 transitions. [2020-07-20 12:32:03,135 INFO L78 Accepts]: Start accepts. Automaton has 24634 states and 37325 transitions. Word has length 330 [2020-07-20 12:32:03,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 12:32:03,135 INFO L479 AbstractCegarLoop]: Abstraction has 24634 states and 37325 transitions. [2020-07-20 12:32:03,136 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-20 12:32:03,136 INFO L276 IsEmpty]: Start isEmpty. Operand 24634 states and 37325 transitions. [2020-07-20 12:32:03,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2020-07-20 12:32:03,165 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 12:32:03,165 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 12:32:03,370 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 12:32:03,372 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 12:32:03,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 12:32:03,373 INFO L82 PathProgramCache]: Analyzing trace with hash 576924818, now seen corresponding path program 1 times [2020-07-20 12:32:03,373 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 12:32:03,374 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [874269302] [2020-07-20 12:32:03,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 12:32:03,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 12:32:03,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 2220 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-20 12:32:03,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 12:32:03,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 12:32:03,927 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 12:32:03,928 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [874269302] [2020-07-20 12:32:03,928 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 12:32:03,928 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 12:32:03,928 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879603860] [2020-07-20 12:32:03,929 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 12:32:03,929 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 12:32:03,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 12:32:03,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 12:32:03,930 INFO L87 Difference]: Start difference. First operand 24634 states and 37325 transitions. Second operand 3 states. [2020-07-20 12:32:04,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 12:32:04,990 INFO L93 Difference]: Finished difference Result 56433 states and 85666 transitions. [2020-07-20 12:32:04,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 12:32:04,991 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 330 [2020-07-20 12:32:04,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 12:32:05,051 INFO L225 Difference]: With dead ends: 56433 [2020-07-20 12:32:05,051 INFO L226 Difference]: Without dead ends: 33554 [2020-07-20 12:32:05,092 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 328 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 12:32:05,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33554 states. [2020-07-20 12:32:06,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33554 to 28462. [2020-07-20 12:32:06,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28462 states. [2020-07-20 12:32:06,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28462 states to 28462 states and 43474 transitions. [2020-07-20 12:32:06,890 INFO L78 Accepts]: Start accepts. Automaton has 28462 states and 43474 transitions. Word has length 330 [2020-07-20 12:32:06,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 12:32:06,891 INFO L479 AbstractCegarLoop]: Abstraction has 28462 states and 43474 transitions. [2020-07-20 12:32:06,891 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 12:32:06,891 INFO L276 IsEmpty]: Start isEmpty. Operand 28462 states and 43474 transitions. [2020-07-20 12:32:06,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2020-07-20 12:32:06,905 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 12:32:06,905 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 12:32:07,111 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 12:32:07,113 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 12:32:07,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 12:32:07,114 INFO L82 PathProgramCache]: Analyzing trace with hash 882431845, now seen corresponding path program 1 times [2020-07-20 12:32:07,114 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 12:32:07,115 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [268889840] [2020-07-20 12:32:07,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 12:32:07,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 12:32:07,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 2217 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-20 12:32:07,455 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 12:32:07,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 12:32:07,504 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 12:32:07,504 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [268889840] [2020-07-20 12:32:07,504 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 12:32:07,504 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 12:32:07,504 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684209611] [2020-07-20 12:32:07,505 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 12:32:07,505 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 12:32:07,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 12:32:07,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 12:32:07,506 INFO L87 Difference]: Start difference. First operand 28462 states and 43474 transitions. Second operand 3 states. [2020-07-20 12:32:09,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 12:32:09,587 INFO L93 Difference]: Finished difference Result 83874 states and 127773 transitions. [2020-07-20 12:32:09,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 12:32:09,588 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 330 [2020-07-20 12:32:09,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 12:32:09,671 INFO L225 Difference]: With dead ends: 83874 [2020-07-20 12:32:09,671 INFO L226 Difference]: Without dead ends: 56175 [2020-07-20 12:32:09,710 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 328 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 12:32:09,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56175 states. [2020-07-20 12:32:10,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56175 to 28566. [2020-07-20 12:32:10,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28566 states. [2020-07-20 12:32:10,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28566 states to 28566 states and 43610 transitions. [2020-07-20 12:32:10,916 INFO L78 Accepts]: Start accepts. Automaton has 28566 states and 43610 transitions. Word has length 330 [2020-07-20 12:32:10,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 12:32:10,916 INFO L479 AbstractCegarLoop]: Abstraction has 28566 states and 43610 transitions. [2020-07-20 12:32:10,916 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 12:32:10,916 INFO L276 IsEmpty]: Start isEmpty. Operand 28566 states and 43610 transitions. [2020-07-20 12:32:10,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2020-07-20 12:32:10,930 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 12:32:10,930 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 12:32:11,130 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 12:32:11,131 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 12:32:11,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 12:32:11,132 INFO L82 PathProgramCache]: Analyzing trace with hash -1784930080, now seen corresponding path program 1 times [2020-07-20 12:32:11,132 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 12:32:11,133 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1110462237] [2020-07-20 12:32:11,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 12:32:11,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 12:32:11,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 2218 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-20 12:32:11,480 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 12:32:12,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 12:32:12,396 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 12:32:12,396 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1110462237] [2020-07-20 12:32:12,397 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 12:32:12,397 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 12:32:12,397 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885757582] [2020-07-20 12:32:12,398 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 12:32:12,399 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 12:32:12,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 12:32:12,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 12:32:12,399 INFO L87 Difference]: Start difference. First operand 28566 states and 43610 transitions. Second operand 3 states. [2020-07-20 12:32:14,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 12:32:14,525 INFO L93 Difference]: Finished difference Result 84007 states and 127938 transitions. [2020-07-20 12:32:14,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 12:32:14,526 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 331 [2020-07-20 12:32:14,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 12:32:14,612 INFO L225 Difference]: With dead ends: 84007 [2020-07-20 12:32:14,612 INFO L226 Difference]: Without dead ends: 56295 [2020-07-20 12:32:14,821 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 329 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 12:32:14,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56295 states. [2020-07-20 12:32:16,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56295 to 28708. [2020-07-20 12:32:16,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28708 states. [2020-07-20 12:32:16,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28708 states to 28708 states and 43781 transitions. [2020-07-20 12:32:16,081 INFO L78 Accepts]: Start accepts. Automaton has 28708 states and 43781 transitions. Word has length 331 [2020-07-20 12:32:16,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 12:32:16,081 INFO L479 AbstractCegarLoop]: Abstraction has 28708 states and 43781 transitions. [2020-07-20 12:32:16,082 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 12:32:16,082 INFO L276 IsEmpty]: Start isEmpty. Operand 28708 states and 43781 transitions. [2020-07-20 12:32:16,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2020-07-20 12:32:16,102 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 12:32:16,103 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 12:32:16,317 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 12:32:16,318 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 12:32:16,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 12:32:16,319 INFO L82 PathProgramCache]: Analyzing trace with hash 311115085, now seen corresponding path program 1 times [2020-07-20 12:32:16,319 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 12:32:16,320 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [174597427] [2020-07-20 12:32:16,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 12:32:16,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 12:32:16,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 2223 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-20 12:32:16,668 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 12:32:16,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 12:32:16,744 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 12:32:16,745 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [174597427] [2020-07-20 12:32:16,745 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 12:32:16,745 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 12:32:16,745 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431641363] [2020-07-20 12:32:16,746 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 12:32:16,746 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 12:32:16,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 12:32:16,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 12:32:16,747 INFO L87 Difference]: Start difference. First operand 28708 states and 43781 transitions. Second operand 3 states. [2020-07-20 12:32:18,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 12:32:18,674 INFO L93 Difference]: Finished difference Result 73205 states and 112510 transitions. [2020-07-20 12:32:18,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 12:32:18,675 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 332 [2020-07-20 12:32:18,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 12:32:18,723 INFO L225 Difference]: With dead ends: 73205 [2020-07-20 12:32:18,724 INFO L226 Difference]: Without dead ends: 46646 [2020-07-20 12:32:18,753 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 12:32:18,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46646 states. [2020-07-20 12:32:20,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46646 to 38480. [2020-07-20 12:32:20,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38480 states. [2020-07-20 12:32:20,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38480 states to 38480 states and 59339 transitions. [2020-07-20 12:32:20,758 INFO L78 Accepts]: Start accepts. Automaton has 38480 states and 59339 transitions. Word has length 332 [2020-07-20 12:32:20,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 12:32:20,758 INFO L479 AbstractCegarLoop]: Abstraction has 38480 states and 59339 transitions. [2020-07-20 12:32:20,758 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 12:32:20,759 INFO L276 IsEmpty]: Start isEmpty. Operand 38480 states and 59339 transitions. [2020-07-20 12:32:20,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2020-07-20 12:32:20,778 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 12:32:20,779 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 12:32:20,991 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 12:32:20,992 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 12:32:20,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 12:32:20,993 INFO L82 PathProgramCache]: Analyzing trace with hash 1811686360, now seen corresponding path program 1 times [2020-07-20 12:32:20,993 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 12:32:20,994 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [335703059] [2020-07-20 12:32:20,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 12:32:21,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 12:32:21,336 INFO L263 TraceCheckSpWp]: Trace formula consists of 2219 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-20 12:32:21,342 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 12:32:21,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 12:32:21,410 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 12:32:21,411 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [335703059] [2020-07-20 12:32:21,411 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 12:32:21,411 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 12:32:21,411 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909841812] [2020-07-20 12:32:21,411 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 12:32:21,412 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 12:32:21,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 12:32:21,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 12:32:21,412 INFO L87 Difference]: Start difference. First operand 38480 states and 59339 transitions. Second operand 4 states. [2020-07-20 12:32:23,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 12:32:23,950 INFO L93 Difference]: Finished difference Result 74172 states and 114252 transitions. [2020-07-20 12:32:23,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 12:32:23,951 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 332 [2020-07-20 12:32:23,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 12:32:23,987 INFO L225 Difference]: With dead ends: 74172 [2020-07-20 12:32:23,987 INFO L226 Difference]: Without dead ends: 36668 [2020-07-20 12:32:24,011 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 329 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-20 12:32:24,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36668 states. [2020-07-20 12:32:25,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36668 to 36626. [2020-07-20 12:32:25,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36626 states. [2020-07-20 12:32:25,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36626 states to 36626 states and 56447 transitions. [2020-07-20 12:32:25,549 INFO L78 Accepts]: Start accepts. Automaton has 36626 states and 56447 transitions. Word has length 332 [2020-07-20 12:32:25,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 12:32:25,550 INFO L479 AbstractCegarLoop]: Abstraction has 36626 states and 56447 transitions. [2020-07-20 12:32:25,550 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 12:32:25,550 INFO L276 IsEmpty]: Start isEmpty. Operand 36626 states and 56447 transitions. [2020-07-20 12:32:25,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2020-07-20 12:32:25,565 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 12:32:25,565 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 12:32:25,766 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 12:32:25,766 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 12:32:25,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 12:32:25,767 INFO L82 PathProgramCache]: Analyzing trace with hash 1561155579, now seen corresponding path program 1 times [2020-07-20 12:32:25,768 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 12:32:25,768 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [695165765] [2020-07-20 12:32:25,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 12:32:26,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 12:32:26,129 INFO L263 TraceCheckSpWp]: Trace formula consists of 2229 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 12:32:26,133 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 12:32:26,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 12:32:26,250 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 12:32:26,250 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [695165765] [2020-07-20 12:32:26,252 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 12:32:26,252 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 12:32:26,254 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038222439] [2020-07-20 12:32:26,255 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 12:32:26,255 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 12:32:26,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 12:32:26,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 12:32:26,256 INFO L87 Difference]: Start difference. First operand 36626 states and 56447 transitions. Second operand 4 states. [2020-07-20 12:32:29,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 12:32:29,785 INFO L93 Difference]: Finished difference Result 108032 states and 166312 transitions. [2020-07-20 12:32:29,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 12:32:29,787 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 333 [2020-07-20 12:32:29,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 12:32:29,855 INFO L225 Difference]: With dead ends: 108032 [2020-07-20 12:32:29,856 INFO L226 Difference]: Without dead ends: 71741 [2020-07-20 12:32:29,884 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 12:32:29,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71741 states. [2020-07-20 12:32:34,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71741 to 71473. [2020-07-20 12:32:34,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71473 states. [2020-07-20 12:32:34,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71473 states to 71473 states and 109633 transitions. [2020-07-20 12:32:34,799 INFO L78 Accepts]: Start accepts. Automaton has 71473 states and 109633 transitions. Word has length 333 [2020-07-20 12:32:34,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 12:32:34,799 INFO L479 AbstractCegarLoop]: Abstraction has 71473 states and 109633 transitions. [2020-07-20 12:32:34,799 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 12:32:34,799 INFO L276 IsEmpty]: Start isEmpty. Operand 71473 states and 109633 transitions. [2020-07-20 12:32:34,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2020-07-20 12:32:34,825 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 12:32:34,826 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 12:32:35,026 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 12:32:35,027 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 12:32:35,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 12:32:35,028 INFO L82 PathProgramCache]: Analyzing trace with hash -739742041, now seen corresponding path program 1 times [2020-07-20 12:32:35,029 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 12:32:35,029 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [117275327] [2020-07-20 12:32:35,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 12:32:35,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 12:32:35,398 INFO L263 TraceCheckSpWp]: Trace formula consists of 2232 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-20 12:32:35,404 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 12:32:35,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 12:32:35,520 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 12:32:35,521 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [117275327] [2020-07-20 12:32:35,521 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 12:32:35,521 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 12:32:35,521 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699442572] [2020-07-20 12:32:35,522 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 12:32:35,522 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 12:32:35,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 12:32:35,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 12:32:35,522 INFO L87 Difference]: Start difference. First operand 71473 states and 109633 transitions. Second operand 3 states. [2020-07-20 12:32:41,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 12:32:41,882 INFO L93 Difference]: Finished difference Result 209407 states and 320957 transitions. [2020-07-20 12:32:41,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 12:32:41,882 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 335 [2020-07-20 12:32:41,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 12:32:42,041 INFO L225 Difference]: With dead ends: 209407 [2020-07-20 12:32:42,042 INFO L226 Difference]: Without dead ends: 139322 [2020-07-20 12:32:42,105 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 333 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 12:32:42,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139322 states. [2020-07-20 12:32:51,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139322 to 139054. [2020-07-20 12:32:51,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139054 states. [2020-07-20 12:32:51,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139054 states to 139054 states and 212270 transitions. [2020-07-20 12:32:51,289 INFO L78 Accepts]: Start accepts. Automaton has 139054 states and 212270 transitions. Word has length 335 [2020-07-20 12:32:51,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 12:32:51,290 INFO L479 AbstractCegarLoop]: Abstraction has 139054 states and 212270 transitions. [2020-07-20 12:32:51,290 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 12:32:51,290 INFO L276 IsEmpty]: Start isEmpty. Operand 139054 states and 212270 transitions. [2020-07-20 12:32:51,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2020-07-20 12:32:51,344 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 12:32:51,344 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 12:32:51,545 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 12:32:51,545 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 12:32:51,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 12:32:51,546 INFO L82 PathProgramCache]: Analyzing trace with hash -228518253, now seen corresponding path program 1 times [2020-07-20 12:32:51,547 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 12:32:51,547 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1291526015] [2020-07-20 12:32:51,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 12:32:51,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 12:32:51,894 INFO L263 TraceCheckSpWp]: Trace formula consists of 2234 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-20 12:32:51,898 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 12:32:51,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 12:32:51,969 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 12:32:51,970 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1291526015] [2020-07-20 12:32:51,970 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 12:32:51,970 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 12:32:51,970 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940144667] [2020-07-20 12:32:51,971 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 12:32:51,971 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 12:32:51,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 12:32:51,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 12:32:51,971 INFO L87 Difference]: Start difference. First operand 139054 states and 212270 transitions. Second operand 3 states. [2020-07-20 12:33:03,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 12:33:03,618 INFO L93 Difference]: Finished difference Result 309785 states and 471819 transitions. [2020-07-20 12:33:03,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 12:33:03,618 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 336 [2020-07-20 12:33:03,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 12:33:03,864 INFO L225 Difference]: With dead ends: 309785 [2020-07-20 12:33:03,865 INFO L226 Difference]: Without dead ends: 212326 [2020-07-20 12:33:03,944 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 335 GetRequests, 334 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 12:33:04,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212326 states. [2020-07-20 12:33:12,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212326 to 138797. [2020-07-20 12:33:12,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138797 states. [2020-07-20 12:33:12,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138797 states to 138797 states and 211834 transitions. [2020-07-20 12:33:12,340 INFO L78 Accepts]: Start accepts. Automaton has 138797 states and 211834 transitions. Word has length 336 [2020-07-20 12:33:12,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 12:33:12,340 INFO L479 AbstractCegarLoop]: Abstraction has 138797 states and 211834 transitions. [2020-07-20 12:33:12,340 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 12:33:12,340 INFO L276 IsEmpty]: Start isEmpty. Operand 138797 states and 211834 transitions. [2020-07-20 12:33:12,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2020-07-20 12:33:12,387 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 12:33:12,388 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 12:33:12,593 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 12:33:12,594 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 12:33:12,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 12:33:12,595 INFO L82 PathProgramCache]: Analyzing trace with hash -950688434, now seen corresponding path program 1 times [2020-07-20 12:33:12,595 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 12:33:12,596 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1146004819] [2020-07-20 12:33:12,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 12:33:12,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 12:33:12,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 2237 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-20 12:33:12,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 12:33:15,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 12:33:15,555 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 12:33:15,555 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1146004819] [2020-07-20 12:33:15,555 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 12:33:15,556 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-07-20 12:33:15,556 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146627286] [2020-07-20 12:33:15,556 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-20 12:33:15,557 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 12:33:15,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-20 12:33:15,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-07-20 12:33:15,557 INFO L87 Difference]: Start difference. First operand 138797 states and 211834 transitions. Second operand 8 states. [2020-07-20 12:33:34,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 12:33:34,186 INFO L93 Difference]: Finished difference Result 372535 states and 572977 transitions. [2020-07-20 12:33:34,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-07-20 12:33:34,186 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 336 [2020-07-20 12:33:34,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 12:33:34,602 INFO L225 Difference]: With dead ends: 372535 [2020-07-20 12:33:34,602 INFO L226 Difference]: Without dead ends: 313173 [2020-07-20 12:33:34,679 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 343 GetRequests, 329 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=86, Invalid=154, Unknown=0, NotChecked=0, Total=240 [2020-07-20 12:33:34,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313173 states. [2020-07-20 12:33:49,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313173 to 175297. [2020-07-20 12:33:49,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175297 states. [2020-07-20 12:33:50,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175297 states to 175297 states and 267636 transitions. [2020-07-20 12:33:50,121 INFO L78 Accepts]: Start accepts. Automaton has 175297 states and 267636 transitions. Word has length 336 [2020-07-20 12:33:50,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 12:33:50,121 INFO L479 AbstractCegarLoop]: Abstraction has 175297 states and 267636 transitions. [2020-07-20 12:33:50,121 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-20 12:33:50,121 INFO L276 IsEmpty]: Start isEmpty. Operand 175297 states and 267636 transitions. [2020-07-20 12:33:50,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2020-07-20 12:33:50,181 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 12:33:50,181 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 12:33:50,382 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 12:33:50,382 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 12:33:50,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 12:33:50,383 INFO L82 PathProgramCache]: Analyzing trace with hash 937198633, now seen corresponding path program 1 times [2020-07-20 12:33:50,383 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 12:33:50,384 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1797626397] [2020-07-20 12:33:50,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 12:33:50,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 12:33:50,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 2230 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-20 12:33:50,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 12:33:50,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 12:33:50,815 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 12:33:50,816 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1797626397] [2020-07-20 12:33:50,816 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 12:33:50,816 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 12:33:50,816 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555184499] [2020-07-20 12:33:50,817 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 12:33:50,817 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 12:33:50,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 12:33:50,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 12:33:50,817 INFO L87 Difference]: Start difference. First operand 175297 states and 267636 transitions. Second operand 3 states. [2020-07-20 12:34:12,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 12:34:12,589 INFO L93 Difference]: Finished difference Result 499153 states and 760575 transitions. [2020-07-20 12:34:12,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 12:34:12,589 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 336 [2020-07-20 12:34:12,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 12:34:13,021 INFO L225 Difference]: With dead ends: 499153 [2020-07-20 12:34:13,021 INFO L226 Difference]: Without dead ends: 324464 [2020-07-20 12:34:13,160 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 335 GetRequests, 334 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 12:34:13,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324464 states. [2020-07-20 12:34:38,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324464 to 324100. [2020-07-20 12:34:38,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 324100 states. [2020-07-20 12:34:38,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324100 states to 324100 states and 490893 transitions. [2020-07-20 12:34:38,940 INFO L78 Accepts]: Start accepts. Automaton has 324100 states and 490893 transitions. Word has length 336 [2020-07-20 12:34:38,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 12:34:38,941 INFO L479 AbstractCegarLoop]: Abstraction has 324100 states and 490893 transitions. [2020-07-20 12:34:38,941 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 12:34:38,941 INFO L276 IsEmpty]: Start isEmpty. Operand 324100 states and 490893 transitions. [2020-07-20 12:34:39,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2020-07-20 12:34:39,625 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 12:34:39,625 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 12:34:39,826 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 12:34:39,826 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 12:34:39,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 12:34:39,827 INFO L82 PathProgramCache]: Analyzing trace with hash -467583508, now seen corresponding path program 1 times [2020-07-20 12:34:39,827 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 12:34:39,828 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [213888176] [2020-07-20 12:34:39,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 12:34:40,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 12:34:40,169 INFO L263 TraceCheckSpWp]: Trace formula consists of 2231 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-20 12:34:40,173 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 12:34:40,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 12:34:40,229 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 12:34:40,230 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [213888176] [2020-07-20 12:34:40,230 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 12:34:40,230 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 12:34:40,230 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647547930] [2020-07-20 12:34:40,231 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 12:34:40,231 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 12:34:40,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 12:34:40,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 12:34:40,231 INFO L87 Difference]: Start difference. First operand 324100 states and 490893 transitions. Second operand 3 states. [2020-07-20 12:35:20,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 12:35:20,375 INFO L93 Difference]: Finished difference Result 787698 states and 1202974 transitions. [2020-07-20 12:35:20,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 12:35:20,376 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 336 [2020-07-20 12:35:20,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 12:35:21,058 INFO L225 Difference]: With dead ends: 787698 [2020-07-20 12:35:21,058 INFO L226 Difference]: Without dead ends: 477601 [2020-07-20 12:35:21,296 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 335 GetRequests, 334 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 12:35:21,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 477601 states. [2020-07-20 12:35:57,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 477601 to 449893. [2020-07-20 12:35:57,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 449893 states. [2020-07-20 12:35:58,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449893 states to 449893 states and 687312 transitions. [2020-07-20 12:35:58,481 INFO L78 Accepts]: Start accepts. Automaton has 449893 states and 687312 transitions. Word has length 336 [2020-07-20 12:35:58,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 12:35:58,481 INFO L479 AbstractCegarLoop]: Abstraction has 449893 states and 687312 transitions. [2020-07-20 12:35:58,481 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 12:35:58,481 INFO L276 IsEmpty]: Start isEmpty. Operand 449893 states and 687312 transitions. [2020-07-20 12:35:58,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2020-07-20 12:35:58,592 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 12:35:58,592 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 12:35:58,792 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 12:35:58,793 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 12:35:58,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 12:35:58,794 INFO L82 PathProgramCache]: Analyzing trace with hash 342551471, now seen corresponding path program 1 times [2020-07-20 12:35:58,794 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 12:35:58,795 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1851180240] [2020-07-20 12:35:58,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 12:35:59,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 12:35:59,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 2236 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-20 12:35:59,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 12:35:59,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 12:35:59,197 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 12:35:59,197 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1851180240] [2020-07-20 12:35:59,198 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 12:35:59,198 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 12:35:59,198 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538335667] [2020-07-20 12:35:59,198 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 12:35:59,198 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 12:35:59,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 12:35:59,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 12:35:59,199 INFO L87 Difference]: Start difference. First operand 449893 states and 687312 transitions. Second operand 4 states. [2020-07-20 12:37:07,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 12:37:07,844 INFO L93 Difference]: Finished difference Result 1282087 states and 1957131 transitions. [2020-07-20 12:37:07,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 12:37:07,844 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 337 [2020-07-20 12:37:07,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 12:37:09,102 INFO L225 Difference]: With dead ends: 1282087 [2020-07-20 12:37:09,102 INFO L226 Difference]: Without dead ends: 835677 [2020-07-20 12:37:09,520 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 337 GetRequests, 334 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-20 12:37:10,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 835677 states. [2020-07-20 12:37:56,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 835677 to 444533. [2020-07-20 12:37:56,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 444533 states. [2020-07-20 12:37:57,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444533 states to 444533 states and 678783 transitions. [2020-07-20 12:37:57,712 INFO L78 Accepts]: Start accepts. Automaton has 444533 states and 678783 transitions. Word has length 337 [2020-07-20 12:37:57,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 12:37:57,712 INFO L479 AbstractCegarLoop]: Abstraction has 444533 states and 678783 transitions. [2020-07-20 12:37:57,712 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 12:37:57,712 INFO L276 IsEmpty]: Start isEmpty. Operand 444533 states and 678783 transitions. [2020-07-20 12:37:57,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2020-07-20 12:37:57,852 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 12:37:57,852 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 12:37:58,053 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 12:37:58,053 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 12:37:58,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 12:37:58,055 INFO L82 PathProgramCache]: Analyzing trace with hash 1825163926, now seen corresponding path program 1 times [2020-07-20 12:37:58,055 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 12:37:58,056 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [831119302] [2020-07-20 12:37:58,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 12:37:58,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 12:37:58,391 INFO L263 TraceCheckSpWp]: Trace formula consists of 2242 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-20 12:37:58,396 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 12:37:58,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 12:37:58,466 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 12:37:58,467 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [831119302] [2020-07-20 12:37:58,467 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 12:37:58,467 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 12:37:58,467 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344238906] [2020-07-20 12:37:58,468 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 12:37:58,468 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 12:37:58,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 12:37:58,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 12:37:58,468 INFO L87 Difference]: Start difference. First operand 444533 states and 678783 transitions. Second operand 3 states. [2020-07-20 12:39:08,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 12:39:08,227 INFO L93 Difference]: Finished difference Result 1303216 states and 1989645 transitions. [2020-07-20 12:39:08,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 12:39:08,230 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 340 [2020-07-20 12:39:08,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 12:39:09,553 INFO L225 Difference]: With dead ends: 1303216 [2020-07-20 12:39:09,553 INFO L226 Difference]: Without dead ends: 873777 [2020-07-20 12:39:09,873 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 12:39:10,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 873777 states. [2020-07-20 12:40:05,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 873777 to 443938. [2020-07-20 12:40:05,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 443938 states. [2020-07-20 12:40:06,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443938 states to 443938 states and 678064 transitions. [2020-07-20 12:40:06,516 INFO L78 Accepts]: Start accepts. Automaton has 443938 states and 678064 transitions. Word has length 340 [2020-07-20 12:40:06,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 12:40:06,516 INFO L479 AbstractCegarLoop]: Abstraction has 443938 states and 678064 transitions. [2020-07-20 12:40:06,516 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 12:40:06,516 INFO L276 IsEmpty]: Start isEmpty. Operand 443938 states and 678064 transitions. [2020-07-20 12:40:06,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2020-07-20 12:40:06,633 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 12:40:06,633 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 12:40:06,834 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 12:40:06,834 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 12:40:06,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 12:40:06,835 INFO L82 PathProgramCache]: Analyzing trace with hash -2084501809, now seen corresponding path program 1 times [2020-07-20 12:40:06,836 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 12:40:06,836 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [818431650] [2020-07-20 12:40:06,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 12:40:07,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 12:40:07,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 2247 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-20 12:40:07,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 12:40:07,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 12:40:07,258 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 12:40:07,258 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [818431650] [2020-07-20 12:40:07,258 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 12:40:07,259 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 12:40:07,259 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476227964] [2020-07-20 12:40:07,259 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 12:40:07,260 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 12:40:07,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 12:40:07,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 12:40:07,260 INFO L87 Difference]: Start difference. First operand 443938 states and 678064 transitions. Second operand 3 states. [2020-07-20 12:41:18,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 12:41:18,160 INFO L93 Difference]: Finished difference Result 1224663 states and 1884866 transitions. [2020-07-20 12:41:18,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 12:41:18,160 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 341 [2020-07-20 12:41:18,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 12:41:19,404 INFO L225 Difference]: With dead ends: 1224663 [2020-07-20 12:41:19,404 INFO L226 Difference]: Without dead ends: 794372 [2020-07-20 12:41:19,710 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 340 GetRequests, 339 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 12:41:20,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 794372 states. [2020-07-20 12:42:39,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 794372 to 709090. [2020-07-20 12:42:39,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 709090 states. [2020-07-20 12:42:41,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 709090 states to 709090 states and 1103985 transitions. [2020-07-20 12:42:41,662 INFO L78 Accepts]: Start accepts. Automaton has 709090 states and 1103985 transitions. Word has length 341 [2020-07-20 12:42:41,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 12:42:41,662 INFO L479 AbstractCegarLoop]: Abstraction has 709090 states and 1103985 transitions. [2020-07-20 12:42:41,662 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 12:42:41,662 INFO L276 IsEmpty]: Start isEmpty. Operand 709090 states and 1103985 transitions. [2020-07-20 12:42:41,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2020-07-20 12:42:41,771 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 12:42:41,771 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 12:42:41,972 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 12:42:41,972 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 12:42:41,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 12:42:41,973 INFO L82 PathProgramCache]: Analyzing trace with hash -1551608569, now seen corresponding path program 1 times [2020-07-20 12:42:41,974 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 12:42:41,974 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2132259938] [2020-07-20 12:42:41,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 12:42:42,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 12:42:42,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 2243 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-20 12:42:42,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 12:42:42,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 12:42:42,393 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 12:42:42,393 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2132259938] [2020-07-20 12:42:42,393 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 12:42:42,393 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 12:42:42,394 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373391007] [2020-07-20 12:42:42,394 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 12:42:42,394 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 12:42:42,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 12:42:42,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 12:42:42,395 INFO L87 Difference]: Start difference. First operand 709090 states and 1103985 transitions. Second operand 4 states.