/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 [2020-07-21 12:21:24,112 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 12:21:24,116 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 12:21:24,135 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 12:21:24,135 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 12:21:24,137 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 12:21:24,139 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 12:21:24,153 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 12:21:24,155 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 12:21:24,157 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 12:21:24,158 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 12:21:24,159 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 12:21:24,160 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 12:21:24,163 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 12:21:24,165 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 12:21:24,167 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 12:21:24,169 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 12:21:24,172 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 12:21:24,174 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 12:21:24,180 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 12:21:24,184 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 12:21:24,188 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 12:21:24,189 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 12:21:24,190 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 12:21:24,193 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 12:21:24,206 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 12:21:24,207 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 12:21:24,208 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 12:21:24,209 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 [2020-07-21 12:21:24,235 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 12:21:24,235 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 12:21:24,237 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 12:21:24,237 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 12:21:24,238 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 12:21:24,238 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 12:21:24,238 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 12:21:24,238 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 12:21:24,238 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 12:21:24,239 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 12:21:24,240 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 12:21:24,240 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 12:21:24,240 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 12:21:24,241 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 12:21:24,241 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 12:21:24,241 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 12:21:24,241 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 12:21:24,241 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 12:21:24,242 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 12:21:24,242 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 12:21:24,242 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 12:21:24,242 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 12:21:24,242 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 12:21:24,243 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 12:21:24,243 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 12:21:24,243 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 12:21:24,243 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:21:24,243 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 12:21:24,243 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 12:21:24,244 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 [2020-07-21 12:21:24,511 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 12:21:24,523 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 12:21:24,527 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 12:21:24,528 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 12:21:24,529 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 12:21:24,530 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-07-21 12:21:24,591 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/57136ac7a/5858832e16734c868e9e825025b82646/FLAG6f7215b25 [2020-07-21 12:21:25,246 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 12:21:25,246 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-07-21 12:21:25,275 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/57136ac7a/5858832e16734c868e9e825025b82646/FLAG6f7215b25 [2020-07-21 12:21:25,435 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/57136ac7a/5858832e16734c868e9e825025b82646 [2020-07-21 12:21:25,446 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 12:21:25,450 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 12:21:25,453 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 12:21:25,453 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 12:21:25,457 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 12:21:25,458 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 12:21:25" (1/1) ... [2020-07-21 12:21:25,462 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e9f2e95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:21:25, skipping insertion in model container [2020-07-21 12:21:25,462 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 12:21:25" (1/1) ... [2020-07-21 12:21:25,471 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 12:21:25,650 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 12:21:27,151 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 12:21:27,170 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 12:21:28,069 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 12:21:28,099 INFO L208 MainTranslator]: Completed translation [2020-07-21 12:21:28,100 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:21:28 WrapperNode [2020-07-21 12:21:28,101 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 12:21:28,101 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 12:21:28,102 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 12:21:28,102 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 12:21:28,119 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:21:28" (1/1) ... [2020-07-21 12:21:28,121 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:21:28" (1/1) ... [2020-07-21 12:21:28,170 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:21:28" (1/1) ... [2020-07-21 12:21:28,171 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:21:28" (1/1) ... [2020-07-21 12:21:28,235 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:21:28" (1/1) ... [2020-07-21 12:21:28,281 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:21:28" (1/1) ... [2020-07-21 12:21:28,296 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:21:28" (1/1) ... [2020-07-21 12:21:28,309 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 12:21:28,309 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 12:21:28,309 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 12:21:28,310 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 12:21:28,311 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:21:28" (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 [2020-07-21 12:21:28,384 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 12:21:28,384 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 12:21:28,384 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-21 12:21:28,384 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 12:21:28,384 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 12:21:28,385 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-07-21 12:21:28,385 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-07-21 12:21:28,385 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-07-21 12:21:28,385 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-07-21 12:21:28,386 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-21 12:21:28,386 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-21 12:21:28,386 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-07-21 12:21:28,386 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-07-21 12:21:28,386 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-07-21 12:21:28,387 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-07-21 12:21:28,387 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-07-21 12:21:28,387 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-07-21 12:21:28,387 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-07-21 12:21:28,387 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-07-21 12:21:28,388 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 12:21:28,388 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 12:21:28,388 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 12:21:31,624 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 12:21:31,624 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-21 12:21:31,636 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 12:21:31 BoogieIcfgContainer [2020-07-21 12:21:31,636 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 12:21:31,638 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 12:21:31,638 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 12:21:31,642 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 12:21:31,642 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 12:21:25" (1/3) ... [2020-07-21 12:21:31,643 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f36f8ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 12:21:31, skipping insertion in model container [2020-07-21 12:21:31,643 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:21:28" (2/3) ... [2020-07-21 12:21:31,644 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f36f8ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 12:21:31, skipping insertion in model container [2020-07-21 12:21:31,644 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 12:21:31" (3/3) ... [2020-07-21 12:21:31,646 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-07-21 12:21:31,657 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 12:21:31,667 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 12 error locations. [2020-07-21 12:21:31,682 INFO L251 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2020-07-21 12:21:31,713 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 12:21:31,713 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 12:21:31,714 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 12:21:31,714 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 12:21:31,714 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 12:21:31,714 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 12:21:31,714 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 12:21:31,714 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 12:21:31,756 INFO L276 IsEmpty]: Start isEmpty. Operand 1016 states. [2020-07-21 12:21:31,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2020-07-21 12:21:31,786 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:21:31,788 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] [2020-07-21 12:21:31,789 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]=== [2020-07-21 12:21:31,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:21:31,796 INFO L82 PathProgramCache]: Analyzing trace with hash -179235525, now seen corresponding path program 1 times [2020-07-21 12:21:31,806 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:21:31,806 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2041192910] [2020-07-21 12:21:31,807 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 [2020-07-21 12:21:32,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 12:21:32,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 2204 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-21 12:21:32,331 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 12:21:32,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 12:21:32,538 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 12:21:32,540 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2041192910] [2020-07-21 12:21:32,540 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 12:21:32,541 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 12:21:32,542 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676991573] [2020-07-21 12:21:32,551 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 12:21:32,551 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 12:21:32,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 12:21:32,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 12:21:32,563 INFO L87 Difference]: Start difference. First operand 1016 states. Second operand 3 states. [2020-07-21 12:21:32,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 12:21:32,858 INFO L93 Difference]: Finished difference Result 1776 states and 3147 transitions. [2020-07-21 12:21:32,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 12:21:32,861 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 324 [2020-07-21 12:21:32,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 12:21:32,888 INFO L225 Difference]: With dead ends: 1776 [2020-07-21 12:21:32,888 INFO L226 Difference]: Without dead ends: 1481 [2020-07-21 12:21:32,895 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 [2020-07-21 12:21:32,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1481 states. [2020-07-21 12:21:33,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1481 to 1479. [2020-07-21 12:21:33,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1479 states. [2020-07-21 12:21:33,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1479 states to 1479 states and 2266 transitions. [2020-07-21 12:21:33,033 INFO L78 Accepts]: Start accepts. Automaton has 1479 states and 2266 transitions. Word has length 324 [2020-07-21 12:21:33,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 12:21:33,039 INFO L479 AbstractCegarLoop]: Abstraction has 1479 states and 2266 transitions. [2020-07-21 12:21:33,039 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 12:21:33,039 INFO L276 IsEmpty]: Start isEmpty. Operand 1479 states and 2266 transitions. [2020-07-21 12:21:33,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2020-07-21 12:21:33,053 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:21:33,054 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] [2020-07-21 12:21:33,269 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:21:33,271 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]=== [2020-07-21 12:21:33,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:21:33,274 INFO L82 PathProgramCache]: Analyzing trace with hash -220420006, now seen corresponding path program 1 times [2020-07-21 12:21:33,274 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:21:33,274 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1881392128] [2020-07-21 12:21:33,275 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 [2020-07-21 12:21:33,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 12:21:33,656 INFO L263 TraceCheckSpWp]: Trace formula consists of 2204 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-21 12:21:33,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 12:21:33,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 12:21:33,827 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 12:21:33,828 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1881392128] [2020-07-21 12:21:33,828 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 12:21:33,828 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 12:21:33,829 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518613522] [2020-07-21 12:21:33,831 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 12:21:33,831 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 12:21:33,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 12:21:33,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 12:21:33,832 INFO L87 Difference]: Start difference. First operand 1479 states and 2266 transitions. Second operand 3 states. [2020-07-21 12:21:34,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 12:21:34,090 INFO L93 Difference]: Finished difference Result 2852 states and 4423 transitions. [2020-07-21 12:21:34,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 12:21:34,091 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 324 [2020-07-21 12:21:34,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 12:21:34,106 INFO L225 Difference]: With dead ends: 2852 [2020-07-21 12:21:34,106 INFO L226 Difference]: Without dead ends: 2439 [2020-07-21 12:21:34,110 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 [2020-07-21 12:21:34,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2439 states. [2020-07-21 12:21:34,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2439 to 2437. [2020-07-21 12:21:34,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2437 states. [2020-07-21 12:21:34,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2437 states to 2437 states and 3757 transitions. [2020-07-21 12:21:34,186 INFO L78 Accepts]: Start accepts. Automaton has 2437 states and 3757 transitions. Word has length 324 [2020-07-21 12:21:34,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 12:21:34,187 INFO L479 AbstractCegarLoop]: Abstraction has 2437 states and 3757 transitions. [2020-07-21 12:21:34,187 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 12:21:34,187 INFO L276 IsEmpty]: Start isEmpty. Operand 2437 states and 3757 transitions. [2020-07-21 12:21:34,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2020-07-21 12:21:34,196 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:21:34,196 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] [2020-07-21 12:21:34,409 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:21:34,411 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]=== [2020-07-21 12:21:34,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:21:34,412 INFO L82 PathProgramCache]: Analyzing trace with hash -578874774, now seen corresponding path program 1 times [2020-07-21 12:21:34,413 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:21:34,413 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1682794892] [2020-07-21 12:21:34,413 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 [2020-07-21 12:21:34,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 12:21:34,779 INFO L263 TraceCheckSpWp]: Trace formula consists of 2205 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 12:21:34,786 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 12:21:35,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 12:21:35,062 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 12:21:35,072 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1682794892] [2020-07-21 12:21:35,074 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 12:21:35,074 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 12:21:35,074 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942777919] [2020-07-21 12:21:35,076 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 12:21:35,076 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 12:21:35,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 12:21:35,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 12:21:35,077 INFO L87 Difference]: Start difference. First operand 2437 states and 3757 transitions. Second operand 4 states. [2020-07-21 12:21:35,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 12:21:35,419 INFO L93 Difference]: Finished difference Result 7197 states and 11082 transitions. [2020-07-21 12:21:35,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-21 12:21:35,419 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 324 [2020-07-21 12:21:35,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 12:21:35,444 INFO L225 Difference]: With dead ends: 7197 [2020-07-21 12:21:35,444 INFO L226 Difference]: Without dead ends: 4773 [2020-07-21 12:21:35,451 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 [2020-07-21 12:21:35,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4773 states. [2020-07-21 12:21:35,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4773 to 4663. [2020-07-21 12:21:35,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4663 states. [2020-07-21 12:21:35,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4663 states to 4663 states and 7172 transitions. [2020-07-21 12:21:35,702 INFO L78 Accepts]: Start accepts. Automaton has 4663 states and 7172 transitions. Word has length 324 [2020-07-21 12:21:35,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 12:21:35,703 INFO L479 AbstractCegarLoop]: Abstraction has 4663 states and 7172 transitions. [2020-07-21 12:21:35,703 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 12:21:35,703 INFO L276 IsEmpty]: Start isEmpty. Operand 4663 states and 7172 transitions. [2020-07-21 12:21:35,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2020-07-21 12:21:35,723 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:21:35,724 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] [2020-07-21 12:21:35,938 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:21:35,939 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]=== [2020-07-21 12:21:35,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:21:35,939 INFO L82 PathProgramCache]: Analyzing trace with hash 1662773952, now seen corresponding path program 1 times [2020-07-21 12:21:35,940 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:21:35,940 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [320030808] [2020-07-21 12:21:35,943 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 [2020-07-21 12:21:36,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 12:21:36,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 2210 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 12:21:36,345 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 12:21:36,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 12:21:36,482 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 12:21:36,482 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [320030808] [2020-07-21 12:21:36,482 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 12:21:36,482 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 12:21:36,483 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69434115] [2020-07-21 12:21:36,484 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 12:21:36,484 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 12:21:36,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 12:21:36,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 12:21:36,485 INFO L87 Difference]: Start difference. First operand 4663 states and 7172 transitions. Second operand 3 states. [2020-07-21 12:21:36,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 12:21:36,806 INFO L93 Difference]: Finished difference Result 13948 states and 21452 transitions. [2020-07-21 12:21:36,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 12:21:36,806 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 326 [2020-07-21 12:21:36,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 12:21:36,853 INFO L225 Difference]: With dead ends: 13948 [2020-07-21 12:21:36,854 INFO L226 Difference]: Without dead ends: 9308 [2020-07-21 12:21:36,869 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 [2020-07-21 12:21:36,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9308 states. [2020-07-21 12:21:37,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9308 to 4674. [2020-07-21 12:21:37,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4674 states. [2020-07-21 12:21:37,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4674 states to 4674 states and 7188 transitions. [2020-07-21 12:21:37,125 INFO L78 Accepts]: Start accepts. Automaton has 4674 states and 7188 transitions. Word has length 326 [2020-07-21 12:21:37,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 12:21:37,125 INFO L479 AbstractCegarLoop]: Abstraction has 4674 states and 7188 transitions. [2020-07-21 12:21:37,125 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 12:21:37,126 INFO L276 IsEmpty]: Start isEmpty. Operand 4674 states and 7188 transitions. [2020-07-21 12:21:37,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2020-07-21 12:21:37,137 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:21:37,138 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] [2020-07-21 12:21:37,352 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:21:37,353 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]=== [2020-07-21 12:21:37,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:21:37,354 INFO L82 PathProgramCache]: Analyzing trace with hash 1615757819, now seen corresponding path program 1 times [2020-07-21 12:21:37,354 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:21:37,354 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1598933508] [2020-07-21 12:21:37,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-07-21 12:21:37,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 12:21:37,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 2208 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 12:21:37,753 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 12:21:37,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 12:21:37,878 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 12:21:37,879 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1598933508] [2020-07-21 12:21:37,879 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 12:21:37,879 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 12:21:37,880 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209257309] [2020-07-21 12:21:37,880 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 12:21:37,881 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 12:21:37,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 12:21:37,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 12:21:37,881 INFO L87 Difference]: Start difference. First operand 4674 states and 7188 transitions. Second operand 3 states. [2020-07-21 12:21:38,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 12:21:38,204 INFO L93 Difference]: Finished difference Result 13664 states and 20954 transitions. [2020-07-21 12:21:38,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 12:21:38,204 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 326 [2020-07-21 12:21:38,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 12:21:38,246 INFO L225 Difference]: With dead ends: 13664 [2020-07-21 12:21:38,246 INFO L226 Difference]: Without dead ends: 9141 [2020-07-21 12:21:38,257 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 [2020-07-21 12:21:38,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9141 states. [2020-07-21 12:21:38,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9141 to 9035. [2020-07-21 12:21:38,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9035 states. [2020-07-21 12:21:38,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9035 states to 9035 states and 13835 transitions. [2020-07-21 12:21:38,597 INFO L78 Accepts]: Start accepts. Automaton has 9035 states and 13835 transitions. Word has length 326 [2020-07-21 12:21:38,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 12:21:38,597 INFO L479 AbstractCegarLoop]: Abstraction has 9035 states and 13835 transitions. [2020-07-21 12:21:38,597 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 12:21:38,598 INFO L276 IsEmpty]: Start isEmpty. Operand 9035 states and 13835 transitions. [2020-07-21 12:21:38,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2020-07-21 12:21:38,616 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:21:38,617 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 12:21:38,830 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:21:38,831 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]=== [2020-07-21 12:21:38,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:21:38,832 INFO L82 PathProgramCache]: Analyzing trace with hash -430894979, now seen corresponding path program 1 times [2020-07-21 12:21:38,832 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:21:38,833 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [296465499] [2020-07-21 12:21:38,833 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 [2020-07-21 12:21:39,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 12:21:39,287 INFO L263 TraceCheckSpWp]: Trace formula consists of 2211 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 12:21:39,295 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 12:21:39,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 12:21:39,462 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 12:21:39,462 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [296465499] [2020-07-21 12:21:39,462 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 12:21:39,463 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 12:21:39,463 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703625628] [2020-07-21 12:21:39,464 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 12:21:39,464 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 12:21:39,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 12:21:39,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 12:21:39,464 INFO L87 Difference]: Start difference. First operand 9035 states and 13835 transitions. Second operand 3 states. [2020-07-21 12:21:39,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 12:21:39,884 INFO L93 Difference]: Finished difference Result 27010 states and 41351 transitions. [2020-07-21 12:21:39,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 12:21:39,885 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 327 [2020-07-21 12:21:39,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 12:21:39,928 INFO L225 Difference]: With dead ends: 27010 [2020-07-21 12:21:39,928 INFO L226 Difference]: Without dead ends: 18025 [2020-07-21 12:21:39,951 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 [2020-07-21 12:21:39,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18025 states. [2020-07-21 12:21:40,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18025 to 9051. [2020-07-21 12:21:40,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9051 states. [2020-07-21 12:21:40,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9051 states to 9051 states and 13854 transitions. [2020-07-21 12:21:40,374 INFO L78 Accepts]: Start accepts. Automaton has 9051 states and 13854 transitions. Word has length 327 [2020-07-21 12:21:40,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 12:21:40,374 INFO L479 AbstractCegarLoop]: Abstraction has 9051 states and 13854 transitions. [2020-07-21 12:21:40,374 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 12:21:40,374 INFO L276 IsEmpty]: Start isEmpty. Operand 9051 states and 13854 transitions. [2020-07-21 12:21:40,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2020-07-21 12:21:40,394 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:21:40,394 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] [2020-07-21 12:21:40,609 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:21:40,610 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]=== [2020-07-21 12:21:40,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:21:40,610 INFO L82 PathProgramCache]: Analyzing trace with hash 586921046, now seen corresponding path program 1 times [2020-07-21 12:21:40,611 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:21:40,611 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [225569366] [2020-07-21 12:21:40,612 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 [2020-07-21 12:21:41,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 12:21:41,012 INFO L263 TraceCheckSpWp]: Trace formula consists of 2211 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 12:21:41,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 12:21:41,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 12:21:41,149 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 12:21:41,150 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [225569366] [2020-07-21 12:21:41,150 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 12:21:41,150 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 12:21:41,151 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695082132] [2020-07-21 12:21:41,151 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 12:21:41,152 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 12:21:41,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 12:21:41,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 12:21:41,153 INFO L87 Difference]: Start difference. First operand 9051 states and 13854 transitions. Second operand 3 states. [2020-07-21 12:21:41,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 12:21:41,664 INFO L93 Difference]: Finished difference Result 25633 states and 39149 transitions. [2020-07-21 12:21:41,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 12:21:41,665 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 328 [2020-07-21 12:21:41,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 12:21:41,699 INFO L225 Difference]: With dead ends: 25633 [2020-07-21 12:21:41,699 INFO L226 Difference]: Without dead ends: 16779 [2020-07-21 12:21:41,720 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 [2020-07-21 12:21:41,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16779 states. [2020-07-21 12:21:42,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16779 to 16677. [2020-07-21 12:21:42,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16677 states. [2020-07-21 12:21:43,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16677 states to 16677 states and 25376 transitions. [2020-07-21 12:21:43,018 INFO L78 Accepts]: Start accepts. Automaton has 16677 states and 25376 transitions. Word has length 328 [2020-07-21 12:21:43,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 12:21:43,019 INFO L479 AbstractCegarLoop]: Abstraction has 16677 states and 25376 transitions. [2020-07-21 12:21:43,019 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 12:21:43,019 INFO L276 IsEmpty]: Start isEmpty. Operand 16677 states and 25376 transitions. [2020-07-21 12:21:43,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2020-07-21 12:21:43,044 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:21:43,044 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] [2020-07-21 12:21:43,259 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:21:43,260 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]=== [2020-07-21 12:21:43,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:21:43,261 INFO L82 PathProgramCache]: Analyzing trace with hash 1527346803, now seen corresponding path program 1 times [2020-07-21 12:21:43,262 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:21:43,262 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1352473589] [2020-07-21 12:21:43,263 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 [2020-07-21 12:21:43,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 12:21:43,623 INFO L263 TraceCheckSpWp]: Trace formula consists of 2212 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-21 12:21:43,630 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 12:21:43,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 12:21:43,693 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 12:21:43,693 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1352473589] [2020-07-21 12:21:43,693 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 12:21:43,694 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 12:21:43,694 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533113400] [2020-07-21 12:21:43,695 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 12:21:43,695 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 12:21:43,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 12:21:43,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 12:21:43,695 INFO L87 Difference]: Start difference. First operand 16677 states and 25376 transitions. Second operand 4 states. [2020-07-21 12:21:44,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 12:21:44,796 INFO L93 Difference]: Finished difference Result 48080 states and 72951 transitions. [2020-07-21 12:21:44,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-21 12:21:44,797 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 328 [2020-07-21 12:21:44,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 12:21:44,855 INFO L225 Difference]: With dead ends: 48080 [2020-07-21 12:21:44,855 INFO L226 Difference]: Without dead ends: 31909 [2020-07-21 12:21:44,888 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 [2020-07-21 12:21:44,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31909 states. [2020-07-21 12:21:45,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31909 to 16926. [2020-07-21 12:21:45,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16926 states. [2020-07-21 12:21:45,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16926 states to 16926 states and 25795 transitions. [2020-07-21 12:21:45,683 INFO L78 Accepts]: Start accepts. Automaton has 16926 states and 25795 transitions. Word has length 328 [2020-07-21 12:21:45,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 12:21:45,684 INFO L479 AbstractCegarLoop]: Abstraction has 16926 states and 25795 transitions. [2020-07-21 12:21:45,684 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 12:21:45,684 INFO L276 IsEmpty]: Start isEmpty. Operand 16926 states and 25795 transitions. [2020-07-21 12:21:45,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2020-07-21 12:21:45,714 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:21:45,715 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] [2020-07-21 12:21:45,928 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:21:45,929 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]=== [2020-07-21 12:21:45,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:21:45,929 INFO L82 PathProgramCache]: Analyzing trace with hash -1453573440, now seen corresponding path program 1 times [2020-07-21 12:21:45,930 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:21:45,930 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1314966065] [2020-07-21 12:21:45,930 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 [2020-07-21 12:21:46,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 12:21:46,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 2223 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-21 12:21:46,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 12:21:46,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 12:21:46,668 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 12:21:46,668 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1314966065] [2020-07-21 12:21:46,668 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 12:21:46,668 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-07-21 12:21:46,669 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424904591] [2020-07-21 12:21:46,669 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-21 12:21:46,670 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 12:21:46,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-21 12:21:46,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-07-21 12:21:46,670 INFO L87 Difference]: Start difference. First operand 16926 states and 25795 transitions. Second operand 8 states. [2020-07-21 12:21:50,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 12:21:50,771 INFO L93 Difference]: Finished difference Result 52951 states and 81716 transitions. [2020-07-21 12:21:50,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-07-21 12:21:50,772 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 330 [2020-07-21 12:21:50,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 12:21:50,821 INFO L225 Difference]: With dead ends: 52951 [2020-07-21 12:21:50,821 INFO L226 Difference]: Without dead ends: 38060 [2020-07-21 12:21:50,857 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 [2020-07-21 12:21:50,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38060 states. [2020-07-21 12:21:51,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38060 to 24634. [2020-07-21 12:21:51,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24634 states. [2020-07-21 12:21:51,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24634 states to 24634 states and 37325 transitions. [2020-07-21 12:21:51,979 INFO L78 Accepts]: Start accepts. Automaton has 24634 states and 37325 transitions. Word has length 330 [2020-07-21 12:21:51,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 12:21:51,980 INFO L479 AbstractCegarLoop]: Abstraction has 24634 states and 37325 transitions. [2020-07-21 12:21:51,980 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-21 12:21:51,980 INFO L276 IsEmpty]: Start isEmpty. Operand 24634 states and 37325 transitions. [2020-07-21 12:21:52,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2020-07-21 12:21:52,018 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:21:52,018 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] [2020-07-21 12:21:52,232 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:21:52,233 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]=== [2020-07-21 12:21:52,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:21:52,234 INFO L82 PathProgramCache]: Analyzing trace with hash 576924818, now seen corresponding path program 1 times [2020-07-21 12:21:52,234 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:21:52,235 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [643187085] [2020-07-21 12:21:52,235 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 [2020-07-21 12:21:52,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 12:21:52,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 2220 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 12:21:52,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 12:21:52,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 12:21:52,656 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 12:21:52,656 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [643187085] [2020-07-21 12:21:52,658 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 12:21:52,658 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 12:21:52,658 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886922082] [2020-07-21 12:21:52,659 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 12:21:52,659 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 12:21:52,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 12:21:52,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 12:21:52,660 INFO L87 Difference]: Start difference. First operand 24634 states and 37325 transitions. Second operand 3 states. [2020-07-21 12:21:53,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 12:21:53,915 INFO L93 Difference]: Finished difference Result 56433 states and 85666 transitions. [2020-07-21 12:21:53,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 12:21:53,915 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 330 [2020-07-21 12:21:53,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 12:21:53,957 INFO L225 Difference]: With dead ends: 56433 [2020-07-21 12:21:53,957 INFO L226 Difference]: Without dead ends: 33554 [2020-07-21 12:21:53,990 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 [2020-07-21 12:21:54,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33554 states. [2020-07-21 12:21:55,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33554 to 28462. [2020-07-21 12:21:55,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28462 states. [2020-07-21 12:21:55,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28462 states to 28462 states and 43474 transitions. [2020-07-21 12:21:55,342 INFO L78 Accepts]: Start accepts. Automaton has 28462 states and 43474 transitions. Word has length 330 [2020-07-21 12:21:55,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 12:21:55,342 INFO L479 AbstractCegarLoop]: Abstraction has 28462 states and 43474 transitions. [2020-07-21 12:21:55,342 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 12:21:55,342 INFO L276 IsEmpty]: Start isEmpty. Operand 28462 states and 43474 transitions. [2020-07-21 12:21:55,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2020-07-21 12:21:55,360 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:21:55,360 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] [2020-07-21 12:21:55,561 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:21:55,562 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]=== [2020-07-21 12:21:55,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:21:55,563 INFO L82 PathProgramCache]: Analyzing trace with hash 882431845, now seen corresponding path program 1 times [2020-07-21 12:21:55,563 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:21:55,564 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1648286305] [2020-07-21 12:21:55,564 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 [2020-07-21 12:21:55,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 12:21:55,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 2217 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 12:21:55,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 12:21:56,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 12:21:56,006 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 12:21:56,007 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1648286305] [2020-07-21 12:21:56,007 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 12:21:56,007 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 12:21:56,008 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333230344] [2020-07-21 12:21:56,009 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 12:21:56,009 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 12:21:56,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 12:21:56,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 12:21:56,013 INFO L87 Difference]: Start difference. First operand 28462 states and 43474 transitions. Second operand 3 states. [2020-07-21 12:21:58,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 12:21:58,493 INFO L93 Difference]: Finished difference Result 83874 states and 127773 transitions. [2020-07-21 12:21:58,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 12:21:58,493 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 330 [2020-07-21 12:21:58,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 12:21:58,565 INFO L225 Difference]: With dead ends: 83874 [2020-07-21 12:21:58,565 INFO L226 Difference]: Without dead ends: 56175 [2020-07-21 12:21:58,608 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 [2020-07-21 12:21:58,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56175 states. [2020-07-21 12:22:00,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56175 to 28566. [2020-07-21 12:22:00,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28566 states. [2020-07-21 12:22:00,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28566 states to 28566 states and 43610 transitions. [2020-07-21 12:22:00,073 INFO L78 Accepts]: Start accepts. Automaton has 28566 states and 43610 transitions. Word has length 330 [2020-07-21 12:22:00,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 12:22:00,073 INFO L479 AbstractCegarLoop]: Abstraction has 28566 states and 43610 transitions. [2020-07-21 12:22:00,073 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 12:22:00,074 INFO L276 IsEmpty]: Start isEmpty. Operand 28566 states and 43610 transitions. [2020-07-21 12:22:00,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2020-07-21 12:22:00,089 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:22:00,089 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] [2020-07-21 12:22:00,290 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:22:00,290 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]=== [2020-07-21 12:22:00,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:22:00,291 INFO L82 PathProgramCache]: Analyzing trace with hash -1784930080, now seen corresponding path program 1 times [2020-07-21 12:22:00,292 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:22:00,292 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1859932088] [2020-07-21 12:22:00,293 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 [2020-07-21 12:22:00,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 12:22:00,656 INFO L263 TraceCheckSpWp]: Trace formula consists of 2218 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 12:22:00,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 12:22:00,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 12:22:00,731 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 12:22:00,731 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1859932088] [2020-07-21 12:22:00,731 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 12:22:00,732 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 12:22:00,732 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410031183] [2020-07-21 12:22:00,732 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 12:22:00,733 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 12:22:00,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 12:22:00,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 12:22:00,733 INFO L87 Difference]: Start difference. First operand 28566 states and 43610 transitions. Second operand 3 states. [2020-07-21 12:22:03,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 12:22:03,496 INFO L93 Difference]: Finished difference Result 84007 states and 127938 transitions. [2020-07-21 12:22:03,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 12:22:03,497 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 331 [2020-07-21 12:22:03,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 12:22:03,564 INFO L225 Difference]: With dead ends: 84007 [2020-07-21 12:22:03,564 INFO L226 Difference]: Without dead ends: 56295 [2020-07-21 12:22:03,597 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 [2020-07-21 12:22:03,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56295 states. [2020-07-21 12:22:05,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56295 to 28708. [2020-07-21 12:22:05,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28708 states. [2020-07-21 12:22:06,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28708 states to 28708 states and 43781 transitions. [2020-07-21 12:22:06,004 INFO L78 Accepts]: Start accepts. Automaton has 28708 states and 43781 transitions. Word has length 331 [2020-07-21 12:22:06,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 12:22:06,005 INFO L479 AbstractCegarLoop]: Abstraction has 28708 states and 43781 transitions. [2020-07-21 12:22:06,005 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 12:22:06,005 INFO L276 IsEmpty]: Start isEmpty. Operand 28708 states and 43781 transitions. [2020-07-21 12:22:06,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2020-07-21 12:22:06,025 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:22:06,025 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] [2020-07-21 12:22:06,239 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:22:06,240 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]=== [2020-07-21 12:22:06,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:22:06,241 INFO L82 PathProgramCache]: Analyzing trace with hash 311115085, now seen corresponding path program 1 times [2020-07-21 12:22:06,241 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:22:06,242 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1140030103] [2020-07-21 12:22:06,242 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 [2020-07-21 12:22:06,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 12:22:06,606 INFO L263 TraceCheckSpWp]: Trace formula consists of 2223 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 12:22:06,611 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 12:22:06,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 12:22:06,684 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 12:22:06,684 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1140030103] [2020-07-21 12:22:06,684 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 12:22:06,684 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 12:22:06,685 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046693666] [2020-07-21 12:22:06,685 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 12:22:06,685 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 12:22:06,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 12:22:06,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 12:22:06,686 INFO L87 Difference]: Start difference. First operand 28708 states and 43781 transitions. Second operand 3 states. [2020-07-21 12:22:08,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 12:22:08,789 INFO L93 Difference]: Finished difference Result 73205 states and 112510 transitions. [2020-07-21 12:22:08,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 12:22:08,790 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 332 [2020-07-21 12:22:08,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 12:22:08,839 INFO L225 Difference]: With dead ends: 73205 [2020-07-21 12:22:08,839 INFO L226 Difference]: Without dead ends: 46646 [2020-07-21 12:22:08,866 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 [2020-07-21 12:22:08,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46646 states. [2020-07-21 12:22:10,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46646 to 38480. [2020-07-21 12:22:10,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38480 states. [2020-07-21 12:22:10,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38480 states to 38480 states and 59339 transitions. [2020-07-21 12:22:10,961 INFO L78 Accepts]: Start accepts. Automaton has 38480 states and 59339 transitions. Word has length 332 [2020-07-21 12:22:10,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 12:22:10,962 INFO L479 AbstractCegarLoop]: Abstraction has 38480 states and 59339 transitions. [2020-07-21 12:22:10,962 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 12:22:10,962 INFO L276 IsEmpty]: Start isEmpty. Operand 38480 states and 59339 transitions. [2020-07-21 12:22:10,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2020-07-21 12:22:10,984 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:22:10,984 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] [2020-07-21 12:22:11,197 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:22:11,198 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]=== [2020-07-21 12:22:11,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:22:11,199 INFO L82 PathProgramCache]: Analyzing trace with hash 1811686360, now seen corresponding path program 1 times [2020-07-21 12:22:11,199 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:22:11,200 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1677299260] [2020-07-21 12:22:11,200 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 [2020-07-21 12:22:11,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 12:22:11,565 INFO L263 TraceCheckSpWp]: Trace formula consists of 2219 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-21 12:22:11,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 12:22:11,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 12:22:11,620 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 12:22:11,621 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1677299260] [2020-07-21 12:22:11,621 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 12:22:11,621 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 12:22:11,621 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401929283] [2020-07-21 12:22:11,622 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 12:22:11,622 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 12:22:11,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 12:22:11,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 12:22:11,622 INFO L87 Difference]: Start difference. First operand 38480 states and 59339 transitions. Second operand 4 states. [2020-07-21 12:22:14,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 12:22:14,294 INFO L93 Difference]: Finished difference Result 74172 states and 114252 transitions. [2020-07-21 12:22:14,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-21 12:22:14,294 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 332 [2020-07-21 12:22:14,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 12:22:14,332 INFO L225 Difference]: With dead ends: 74172 [2020-07-21 12:22:14,332 INFO L226 Difference]: Without dead ends: 36668 [2020-07-21 12:22:14,359 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 [2020-07-21 12:22:14,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36668 states. [2020-07-21 12:22:15,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36668 to 36626. [2020-07-21 12:22:15,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36626 states. [2020-07-21 12:22:15,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36626 states to 36626 states and 56447 transitions. [2020-07-21 12:22:15,997 INFO L78 Accepts]: Start accepts. Automaton has 36626 states and 56447 transitions. Word has length 332 [2020-07-21 12:22:15,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 12:22:15,997 INFO L479 AbstractCegarLoop]: Abstraction has 36626 states and 56447 transitions. [2020-07-21 12:22:15,997 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 12:22:15,998 INFO L276 IsEmpty]: Start isEmpty. Operand 36626 states and 56447 transitions. [2020-07-21 12:22:16,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2020-07-21 12:22:16,013 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:22:16,013 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] [2020-07-21 12:22:16,214 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:22:16,214 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]=== [2020-07-21 12:22:16,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:22:16,215 INFO L82 PathProgramCache]: Analyzing trace with hash 1561155579, now seen corresponding path program 1 times [2020-07-21 12:22:16,216 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:22:16,216 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [95615736] [2020-07-21 12:22:16,217 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 [2020-07-21 12:22:16,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 12:22:16,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 2229 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 12:22:16,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 12:22:16,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 12:22:16,766 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 12:22:16,766 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [95615736] [2020-07-21 12:22:16,767 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 12:22:16,767 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 12:22:16,767 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138059599] [2020-07-21 12:22:16,768 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 12:22:16,768 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 12:22:16,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 12:22:16,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 12:22:16,769 INFO L87 Difference]: Start difference. First operand 36626 states and 56447 transitions. Second operand 4 states. [2020-07-21 12:22:20,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 12:22:20,522 INFO L93 Difference]: Finished difference Result 108032 states and 166312 transitions. [2020-07-21 12:22:20,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-21 12:22:20,523 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 333 [2020-07-21 12:22:20,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 12:22:20,595 INFO L225 Difference]: With dead ends: 108032 [2020-07-21 12:22:20,595 INFO L226 Difference]: Without dead ends: 71741 [2020-07-21 12:22:20,627 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 [2020-07-21 12:22:20,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71741 states. [2020-07-21 12:22:25,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71741 to 71473. [2020-07-21 12:22:25,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71473 states. [2020-07-21 12:22:25,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71473 states to 71473 states and 109633 transitions. [2020-07-21 12:22:25,699 INFO L78 Accepts]: Start accepts. Automaton has 71473 states and 109633 transitions. Word has length 333 [2020-07-21 12:22:25,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 12:22:25,700 INFO L479 AbstractCegarLoop]: Abstraction has 71473 states and 109633 transitions. [2020-07-21 12:22:25,700 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 12:22:25,700 INFO L276 IsEmpty]: Start isEmpty. Operand 71473 states and 109633 transitions. [2020-07-21 12:22:25,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2020-07-21 12:22:25,728 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:22:25,728 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] [2020-07-21 12:22:25,929 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:22:25,929 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]=== [2020-07-21 12:22:25,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:22:25,930 INFO L82 PathProgramCache]: Analyzing trace with hash -739742041, now seen corresponding path program 1 times [2020-07-21 12:22:25,931 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:22:25,931 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2114315641] [2020-07-21 12:22:25,932 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 [2020-07-21 12:22:26,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 12:22:26,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 2232 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 12:22:26,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 12:22:26,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 12:22:26,386 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 12:22:26,386 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2114315641] [2020-07-21 12:22:26,386 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 12:22:26,387 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 12:22:26,387 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405684514] [2020-07-21 12:22:26,387 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 12:22:26,388 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 12:22:26,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 12:22:26,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 12:22:26,388 INFO L87 Difference]: Start difference. First operand 71473 states and 109633 transitions. Second operand 3 states. [2020-07-21 12:22:33,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 12:22:33,169 INFO L93 Difference]: Finished difference Result 209407 states and 320957 transitions. [2020-07-21 12:22:35,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 12:22:35,103 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 335 [2020-07-21 12:22:35,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 12:22:35,261 INFO L225 Difference]: With dead ends: 209407 [2020-07-21 12:22:35,261 INFO L226 Difference]: Without dead ends: 139322 [2020-07-21 12:22:35,313 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 [2020-07-21 12:22:35,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139322 states. [2020-07-21 12:22:42,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139322 to 139054. [2020-07-21 12:22:42,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139054 states. [2020-07-21 12:22:42,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139054 states to 139054 states and 212270 transitions. [2020-07-21 12:22:42,607 INFO L78 Accepts]: Start accepts. Automaton has 139054 states and 212270 transitions. Word has length 335 [2020-07-21 12:22:42,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 12:22:42,608 INFO L479 AbstractCegarLoop]: Abstraction has 139054 states and 212270 transitions. [2020-07-21 12:22:42,608 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 12:22:42,608 INFO L276 IsEmpty]: Start isEmpty. Operand 139054 states and 212270 transitions. [2020-07-21 12:22:42,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2020-07-21 12:22:42,661 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:22:42,661 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] [2020-07-21 12:22:42,868 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:22:42,869 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]=== [2020-07-21 12:22:42,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:22:42,870 INFO L82 PathProgramCache]: Analyzing trace with hash -228518253, now seen corresponding path program 1 times [2020-07-21 12:22:42,870 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:22:42,871 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1253750348] [2020-07-21 12:22:42,871 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 [2020-07-21 12:22:43,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 12:22:43,245 INFO L263 TraceCheckSpWp]: Trace formula consists of 2234 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 12:22:43,249 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 12:22:43,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 12:22:43,316 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 12:22:43,316 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1253750348] [2020-07-21 12:22:43,316 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 12:22:43,316 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 12:22:43,316 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895868497] [2020-07-21 12:22:43,317 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 12:22:43,317 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 12:22:43,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 12:22:43,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 12:22:43,318 INFO L87 Difference]: Start difference. First operand 139054 states and 212270 transitions. Second operand 3 states. [2020-07-21 12:22:56,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 12:22:56,076 INFO L93 Difference]: Finished difference Result 309785 states and 471819 transitions. [2020-07-21 12:22:56,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 12:22:56,076 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 336 [2020-07-21 12:22:56,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 12:22:56,341 INFO L225 Difference]: With dead ends: 309785 [2020-07-21 12:22:56,341 INFO L226 Difference]: Without dead ends: 212326 [2020-07-21 12:22:56,429 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 [2020-07-21 12:22:56,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212326 states. [2020-07-21 12:23:04,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212326 to 138797. [2020-07-21 12:23:04,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138797 states. [2020-07-21 12:23:05,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138797 states to 138797 states and 211834 transitions. [2020-07-21 12:23:05,018 INFO L78 Accepts]: Start accepts. Automaton has 138797 states and 211834 transitions. Word has length 336 [2020-07-21 12:23:05,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 12:23:05,018 INFO L479 AbstractCegarLoop]: Abstraction has 138797 states and 211834 transitions. [2020-07-21 12:23:05,018 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 12:23:05,019 INFO L276 IsEmpty]: Start isEmpty. Operand 138797 states and 211834 transitions. [2020-07-21 12:23:05,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2020-07-21 12:23:05,071 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:23:05,071 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 12:23:05,272 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:23:05,272 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]=== [2020-07-21 12:23:05,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:23:05,273 INFO L82 PathProgramCache]: Analyzing trace with hash -950688434, now seen corresponding path program 1 times [2020-07-21 12:23:05,274 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:23:05,274 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1933724293] [2020-07-21 12:23:05,274 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 [2020-07-21 12:23:05,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 12:23:05,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 2237 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-21 12:23:05,649 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 12:23:05,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 12:23:05,849 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 12:23:05,849 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1933724293] [2020-07-21 12:23:05,849 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 12:23:05,850 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-07-21 12:23:05,850 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448943547] [2020-07-21 12:23:05,850 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-21 12:23:05,851 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 12:23:05,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-21 12:23:05,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-07-21 12:23:05,851 INFO L87 Difference]: Start difference. First operand 138797 states and 211834 transitions. Second operand 8 states. [2020-07-21 12:23:27,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 12:23:27,333 INFO L93 Difference]: Finished difference Result 372535 states and 572977 transitions. [2020-07-21 12:23:27,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-07-21 12:23:27,334 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 336 [2020-07-21 12:23:27,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 12:23:27,754 INFO L225 Difference]: With dead ends: 372535 [2020-07-21 12:23:27,754 INFO L226 Difference]: Without dead ends: 313173 [2020-07-21 12:23:28,257 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 343 GetRequests, 329 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=154, Unknown=0, NotChecked=0, Total=240 [2020-07-21 12:23:28,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313173 states. [2020-07-21 12:23:43,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313173 to 175297. [2020-07-21 12:23:43,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175297 states. [2020-07-21 12:23:44,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175297 states to 175297 states and 267636 transitions. [2020-07-21 12:23:44,245 INFO L78 Accepts]: Start accepts. Automaton has 175297 states and 267636 transitions. Word has length 336 [2020-07-21 12:23:44,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 12:23:44,245 INFO L479 AbstractCegarLoop]: Abstraction has 175297 states and 267636 transitions. [2020-07-21 12:23:44,245 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-21 12:23:44,245 INFO L276 IsEmpty]: Start isEmpty. Operand 175297 states and 267636 transitions. [2020-07-21 12:23:44,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2020-07-21 12:23:44,307 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:23:44,308 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] [2020-07-21 12:23:44,508 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:23:44,509 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]=== [2020-07-21 12:23:44,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:23:44,509 INFO L82 PathProgramCache]: Analyzing trace with hash 937198633, now seen corresponding path program 1 times [2020-07-21 12:23:44,510 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:23:44,510 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1666542059] [2020-07-21 12:23:44,511 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 [2020-07-21 12:23:44,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 12:23:44,885 INFO L263 TraceCheckSpWp]: Trace formula consists of 2230 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 12:23:44,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 12:23:44,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 12:23:44,973 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 12:23:44,973 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1666542059] [2020-07-21 12:23:44,973 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 12:23:44,974 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 12:23:44,974 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720797158] [2020-07-21 12:23:44,974 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 12:23:44,974 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 12:23:44,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 12:23:44,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 12:23:44,975 INFO L87 Difference]: Start difference. First operand 175297 states and 267636 transitions. Second operand 3 states. [2020-07-21 12:24:07,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 12:24:07,672 INFO L93 Difference]: Finished difference Result 499153 states and 760575 transitions. [2020-07-21 12:24:07,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 12:24:07,672 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 336 [2020-07-21 12:24:07,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 12:24:08,103 INFO L225 Difference]: With dead ends: 499153 [2020-07-21 12:24:08,103 INFO L226 Difference]: Without dead ends: 324464 [2020-07-21 12:24:08,246 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 [2020-07-21 12:24:08,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324464 states. [2020-07-21 12:24:34,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324464 to 324100. [2020-07-21 12:24:34,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 324100 states. [2020-07-21 12:24:35,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324100 states to 324100 states and 490893 transitions. [2020-07-21 12:24:35,354 INFO L78 Accepts]: Start accepts. Automaton has 324100 states and 490893 transitions. Word has length 336 [2020-07-21 12:24:35,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 12:24:35,354 INFO L479 AbstractCegarLoop]: Abstraction has 324100 states and 490893 transitions. [2020-07-21 12:24:35,354 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 12:24:35,354 INFO L276 IsEmpty]: Start isEmpty. Operand 324100 states and 490893 transitions. [2020-07-21 12:24:35,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2020-07-21 12:24:35,475 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:24:35,475 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] [2020-07-21 12:24:35,675 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:24:35,676 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]=== [2020-07-21 12:24:35,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:24:35,677 INFO L82 PathProgramCache]: Analyzing trace with hash -467583508, now seen corresponding path program 1 times [2020-07-21 12:24:35,677 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:24:35,677 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1627602938] [2020-07-21 12:24:35,678 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 [2020-07-21 12:24:36,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 12:24:36,047 INFO L263 TraceCheckSpWp]: Trace formula consists of 2231 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 12:24:36,052 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 12:24:36,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 12:24:36,121 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 12:24:36,121 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1627602938] [2020-07-21 12:24:36,122 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 12:24:36,122 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 12:24:36,122 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182079495] [2020-07-21 12:24:36,122 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 12:24:36,122 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 12:24:36,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 12:24:36,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 12:24:36,123 INFO L87 Difference]: Start difference. First operand 324100 states and 490893 transitions. Second operand 3 states. [2020-07-21 12:25:17,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 12:25:17,661 INFO L93 Difference]: Finished difference Result 787698 states and 1202974 transitions. [2020-07-21 12:25:17,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 12:25:17,662 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 336 [2020-07-21 12:25:17,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 12:25:18,333 INFO L225 Difference]: With dead ends: 787698 [2020-07-21 12:25:18,333 INFO L226 Difference]: Without dead ends: 477601 [2020-07-21 12:25:18,557 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 [2020-07-21 12:25:18,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 477601 states. [2020-07-21 12:25:55,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 477601 to 449893. [2020-07-21 12:25:55,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 449893 states. [2020-07-21 12:25:56,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449893 states to 449893 states and 687312 transitions. [2020-07-21 12:25:56,387 INFO L78 Accepts]: Start accepts. Automaton has 449893 states and 687312 transitions. Word has length 336 [2020-07-21 12:25:56,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 12:25:56,387 INFO L479 AbstractCegarLoop]: Abstraction has 449893 states and 687312 transitions. [2020-07-21 12:25:56,387 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 12:25:56,387 INFO L276 IsEmpty]: Start isEmpty. Operand 449893 states and 687312 transitions. [2020-07-21 12:25:56,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2020-07-21 12:25:56,513 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:25:56,514 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] [2020-07-21 12:25:56,714 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:25:56,715 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]=== [2020-07-21 12:25:56,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:25:56,715 INFO L82 PathProgramCache]: Analyzing trace with hash 342551471, now seen corresponding path program 1 times [2020-07-21 12:25:56,716 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:25:56,716 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [250953472] [2020-07-21 12:25:56,716 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 [2020-07-21 12:25:58,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 12:25:58,049 INFO L263 TraceCheckSpWp]: Trace formula consists of 2236 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-21 12:25:58,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 12:25:58,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 12:25:58,124 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 12:25:58,124 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [250953472] [2020-07-21 12:25:58,124 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 12:25:58,124 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 12:25:58,125 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166931737] [2020-07-21 12:25:58,125 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 12:25:58,125 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 12:25:58,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 12:25:58,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 12:25:58,126 INFO L87 Difference]: Start difference. First operand 449893 states and 687312 transitions. Second operand 4 states. [2020-07-21 12:27:09,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 12:27:09,233 INFO L93 Difference]: Finished difference Result 1282087 states and 1957131 transitions. [2020-07-21 12:27:09,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-21 12:27:09,233 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 337 [2020-07-21 12:27:09,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 12:27:10,518 INFO L225 Difference]: With dead ends: 1282087 [2020-07-21 12:27:10,518 INFO L226 Difference]: Without dead ends: 835677 [2020-07-21 12:27:10,864 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 [2020-07-21 12:27:11,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 835677 states. [2020-07-21 12:27:57,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 835677 to 444533. [2020-07-21 12:27:57,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 444533 states. [2020-07-21 12:27:58,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444533 states to 444533 states and 678783 transitions. [2020-07-21 12:27:58,904 INFO L78 Accepts]: Start accepts. Automaton has 444533 states and 678783 transitions. Word has length 337 [2020-07-21 12:27:58,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 12:27:58,904 INFO L479 AbstractCegarLoop]: Abstraction has 444533 states and 678783 transitions. [2020-07-21 12:27:58,904 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 12:27:58,904 INFO L276 IsEmpty]: Start isEmpty. Operand 444533 states and 678783 transitions. [2020-07-21 12:27:59,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2020-07-21 12:27:59,056 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:27:59,056 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 12:27:59,256 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:27:59,260 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]=== [2020-07-21 12:27:59,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:27:59,261 INFO L82 PathProgramCache]: Analyzing trace with hash 1825163926, now seen corresponding path program 1 times [2020-07-21 12:27:59,261 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:27:59,261 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [829560570] [2020-07-21 12:27:59,262 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 [2020-07-21 12:27:59,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 12:27:59,631 INFO L263 TraceCheckSpWp]: Trace formula consists of 2242 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 12:27:59,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 12:27:59,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 12:27:59,701 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 12:27:59,701 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [829560570] [2020-07-21 12:27:59,701 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 12:27:59,701 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 12:27:59,702 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717067823] [2020-07-21 12:27:59,702 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 12:27:59,702 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 12:27:59,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 12:27:59,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 12:27:59,702 INFO L87 Difference]: Start difference. First operand 444533 states and 678783 transitions. Second operand 3 states. [2020-07-21 12:29:11,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 12:29:11,160 INFO L93 Difference]: Finished difference Result 1303216 states and 1989645 transitions. [2020-07-21 12:29:11,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 12:29:11,161 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 340 [2020-07-21 12:29:11,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 12:29:12,459 INFO L225 Difference]: With dead ends: 1303216 [2020-07-21 12:29:12,460 INFO L226 Difference]: Without dead ends: 873777 [2020-07-21 12:29:12,793 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 [2020-07-21 12:29:13,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 873777 states. [2020-07-21 12:30:09,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 873777 to 443938. [2020-07-21 12:30:09,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 443938 states. [2020-07-21 12:30:10,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443938 states to 443938 states and 678064 transitions. [2020-07-21 12:30:10,179 INFO L78 Accepts]: Start accepts. Automaton has 443938 states and 678064 transitions. Word has length 340 [2020-07-21 12:30:10,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 12:30:10,179 INFO L479 AbstractCegarLoop]: Abstraction has 443938 states and 678064 transitions. [2020-07-21 12:30:10,179 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 12:30:10,179 INFO L276 IsEmpty]: Start isEmpty. Operand 443938 states and 678064 transitions. [2020-07-21 12:30:10,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2020-07-21 12:30:10,323 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:30:10,323 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] [2020-07-21 12:30:10,523 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:30:10,524 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]=== [2020-07-21 12:30:10,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:30:10,525 INFO L82 PathProgramCache]: Analyzing trace with hash -2084501809, now seen corresponding path program 1 times [2020-07-21 12:30:10,525 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:30:10,525 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [209898991] [2020-07-21 12:30:10,526 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 [2020-07-21 12:30:10,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 12:30:10,885 INFO L263 TraceCheckSpWp]: Trace formula consists of 2247 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 12:30:10,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 12:30:10,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 12:30:10,959 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 12:30:10,960 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [209898991] [2020-07-21 12:30:10,960 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 12:30:10,960 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 12:30:10,960 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082059738] [2020-07-21 12:30:10,960 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 12:30:10,961 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 12:30:10,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 12:30:10,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 12:30:10,961 INFO L87 Difference]: Start difference. First operand 443938 states and 678064 transitions. Second operand 3 states. [2020-07-21 12:31:25,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 12:31:25,877 INFO L93 Difference]: Finished difference Result 1224663 states and 1884866 transitions. [2020-07-21 12:31:25,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 12:31:25,878 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 341 [2020-07-21 12:31:25,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 12:31:27,032 INFO L225 Difference]: With dead ends: 1224663 [2020-07-21 12:31:27,032 INFO L226 Difference]: Without dead ends: 794372 [2020-07-21 12:31:27,384 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 [2020-07-21 12:31:27,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 794372 states. [2020-07-21 12:32:42,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 794372 to 709090. [2020-07-21 12:32:42,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 709090 states. [2020-07-21 12:32:44,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 709090 states to 709090 states and 1103985 transitions. [2020-07-21 12:32:44,259 INFO L78 Accepts]: Start accepts. Automaton has 709090 states and 1103985 transitions. Word has length 341 [2020-07-21 12:32:44,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 12:32:44,259 INFO L479 AbstractCegarLoop]: Abstraction has 709090 states and 1103985 transitions. [2020-07-21 12:32:44,259 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 12:32:44,260 INFO L276 IsEmpty]: Start isEmpty. Operand 709090 states and 1103985 transitions. [2020-07-21 12:32:44,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2020-07-21 12:32:44,374 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:32:44,374 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] [2020-07-21 12:32:44,575 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:32:44,575 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]=== [2020-07-21 12:32:44,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:32:44,576 INFO L82 PathProgramCache]: Analyzing trace with hash -1551608569, now seen corresponding path program 1 times [2020-07-21 12:32:44,576 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:32:44,577 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [683990649] [2020-07-21 12:32:44,577 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 [2020-07-21 12:32:44,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 12:32:44,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 2243 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-21 12:32:44,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 12:32:45,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 12:32:45,010 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 12:32:45,011 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [683990649] [2020-07-21 12:32:45,011 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 12:32:45,011 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 12:32:45,011 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894273315] [2020-07-21 12:32:45,011 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 12:32:45,012 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 12:32:45,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 12:32:45,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 12:32:45,012 INFO L87 Difference]: Start difference. First operand 709090 states and 1103985 transitions. Second operand 4 states.