/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic BIGGEST_EQUIVALENCE_CLASS --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label44.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 23:00:24,535 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 23:00:24,537 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 23:00:24,556 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 23:00:24,557 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 23:00:24,558 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 23:00:24,560 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 23:00:24,570 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 23:00:24,576 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 23:00:24,579 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 23:00:24,581 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 23:00:24,582 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 23:00:24,582 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 23:00:24,584 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 23:00:24,586 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 23:00:24,588 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 23:00:24,590 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 23:00:24,591 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 23:00:24,592 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 23:00:24,597 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 23:00:24,602 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 23:00:24,606 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 23:00:24,607 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 23:00:24,608 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 23:00:24,611 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-21 23:00:24,611 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-21 23:00:24,611 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-21 23:00:24,614 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-21 23:00:24,614 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-21 23:00:24,615 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-21 23:00:24,615 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-21 23:00:24,617 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-21 23:00:24,617 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-21 23:00:24,618 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-21 23:00:24,619 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-21 23:00:24,619 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-21 23:00:24,620 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-21 23:00:24,620 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-21 23:00:24,620 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 23:00:24,621 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 23:00:24,622 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 23:00:24,623 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 23:00:24,660 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 23:00:24,660 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 23:00:24,663 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 23:00:24,664 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 23:00:24,664 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 23:00:24,664 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 23:00:24,664 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 23:00:24,665 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 23:00:24,665 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 23:00:24,665 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 23:00:24,665 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 23:00:24,665 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 23:00:24,666 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 23:00:24,666 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 23:00:24,666 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 23:00:24,666 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 23:00:24,666 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 23:00:24,666 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 23:00:24,667 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 23:00:24,667 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 23:00:24,667 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 23:00:24,668 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 23:00:24,669 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 23:00:24,669 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 23:00:24,669 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 23:00:24,669 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 23:00:24,669 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:00:24,669 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 23:00:24,670 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 23:00:24,670 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> SMT_FEATURE_HEURISTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> BIGGEST_EQUIVALENCE_CLASS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4 [2020-07-21 23:00:24,952 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 23:00:24,965 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 23:00:24,970 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 23:00:24,971 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 23:00:24,972 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 23:00:24,972 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label44.c [2020-07-21 23:00:25,038 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4e2b904bb/fe7580a1ec3e4980b8e7922bd0f692bd/FLAG29c5d29dd [2020-07-21 23:00:25,649 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 23:00:25,649 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem10_label44.c [2020-07-21 23:00:25,668 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4e2b904bb/fe7580a1ec3e4980b8e7922bd0f692bd/FLAG29c5d29dd [2020-07-21 23:00:25,832 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4e2b904bb/fe7580a1ec3e4980b8e7922bd0f692bd [2020-07-21 23:00:25,842 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 23:00:25,845 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 23:00:25,846 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 23:00:25,846 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 23:00:25,850 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 23:00:25,852 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 11:00:25" (1/1) ... [2020-07-21 23:00:25,855 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@aca4160 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:00:25, skipping insertion in model container [2020-07-21 23:00:25,855 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 11:00:25" (1/1) ... [2020-07-21 23:00:25,863 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 23:00:25,930 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 23:00:26,519 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 23:00:26,524 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 23:00:26,663 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 23:00:26,686 INFO L208 MainTranslator]: Completed translation [2020-07-21 23:00:26,686 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:00:26 WrapperNode [2020-07-21 23:00:26,687 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 23:00:26,687 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 23:00:26,688 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 23:00:26,688 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 23:00:26,704 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:00:26" (1/1) ... [2020-07-21 23:00:26,704 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:00:26" (1/1) ... [2020-07-21 23:00:26,723 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:00:26" (1/1) ... [2020-07-21 23:00:26,724 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:00:26" (1/1) ... [2020-07-21 23:00:26,762 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:00:26" (1/1) ... [2020-07-21 23:00:26,782 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:00:26" (1/1) ... [2020-07-21 23:00:26,793 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:00:26" (1/1) ... [2020-07-21 23:00:26,803 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 23:00:26,804 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 23:00:26,804 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 23:00:26,804 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 23:00:26,806 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:00:26" (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 23:00:26,905 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 23:00:26,905 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 23:00:26,906 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-07-21 23:00:26,906 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 23:00:26,906 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-07-21 23:00:26,907 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 23:00:26,907 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 23:00:26,907 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-21 23:00:26,907 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 23:00:26,907 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 23:00:26,909 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 23:00:28,430 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 23:00:28,431 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-21 23:00:28,437 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 11:00:28 BoogieIcfgContainer [2020-07-21 23:00:28,437 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 23:00:28,438 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 23:00:28,439 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 23:00:28,442 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 23:00:28,443 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 11:00:25" (1/3) ... [2020-07-21 23:00:28,444 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e493bbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 11:00:28, skipping insertion in model container [2020-07-21 23:00:28,444 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:00:26" (2/3) ... [2020-07-21 23:00:28,445 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e493bbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 11:00:28, skipping insertion in model container [2020-07-21 23:00:28,445 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 11:00:28" (3/3) ... [2020-07-21 23:00:28,447 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label44.c [2020-07-21 23:00:28,458 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 23:00:28,467 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 23:00:28,481 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 23:00:28,508 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 23:00:28,508 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 23:00:28,508 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 23:00:28,509 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 23:00:28,509 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 23:00:28,509 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 23:00:28,509 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 23:00:28,509 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 23:00:28,534 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states. [2020-07-21 23:00:28,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-07-21 23:00:28,544 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:00:28,545 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] [2020-07-21 23:00:28,545 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:00:28,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:00:28,551 INFO L82 PathProgramCache]: Analyzing trace with hash 745509942, now seen corresponding path program 1 times [2020-07-21 23:00:28,558 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:00:28,558 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [549555498] [2020-07-21 23:00:28,558 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:00:28,729 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 23:00:28,729 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:00:28,733 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-21 23:00:28,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:00:28,872 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 23:00:28,873 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 23:00:28,874 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [549555498] [2020-07-21 23:00:28,875 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 23:00:28,876 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 23:00:28,877 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574534503] [2020-07-21 23:00:28,887 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 23:00:28,888 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:00:28,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 23:00:28,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 23:00:28,912 INFO L87 Difference]: Start difference. First operand 215 states. Second operand 3 states. [2020-07-21 23:00:30,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:00:30,034 INFO L93 Difference]: Finished difference Result 571 states and 989 transitions. [2020-07-21 23:00:30,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 23:00:30,036 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 63 [2020-07-21 23:00:30,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:00:30,054 INFO L225 Difference]: With dead ends: 571 [2020-07-21 23:00:30,054 INFO L226 Difference]: Without dead ends: 294 [2020-07-21 23:00:30,062 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 61 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 23:00:30,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2020-07-21 23:00:30,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 294. [2020-07-21 23:00:30,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 294 states. [2020-07-21 23:00:30,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 391 transitions. [2020-07-21 23:00:30,147 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 391 transitions. Word has length 63 [2020-07-21 23:00:30,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:00:30,148 INFO L479 AbstractCegarLoop]: Abstraction has 294 states and 391 transitions. [2020-07-21 23:00:30,150 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 23:00:30,151 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 391 transitions. [2020-07-21 23:00:30,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-07-21 23:00:30,163 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:00:30,164 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 23:00:30,375 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:00:30,376 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:00:30,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:00:30,377 INFO L82 PathProgramCache]: Analyzing trace with hash -825362990, now seen corresponding path program 1 times [2020-07-21 23:00:30,377 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:00:30,378 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1303218336] [2020-07-21 23:00:30,378 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:00:30,470 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 23:00:30,470 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:00:30,472 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-21 23:00:30,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:00:30,577 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 53 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-07-21 23:00:30,577 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 23:00:30,670 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-07-21 23:00:30,671 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1303218336] [2020-07-21 23:00:30,671 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-07-21 23:00:30,671 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2020-07-21 23:00:30,672 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503753122] [2020-07-21 23:00:30,673 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 23:00:30,674 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:00:30,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 23:00:30,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-21 23:00:30,674 INFO L87 Difference]: Start difference. First operand 294 states and 391 transitions. Second operand 4 states. [2020-07-21 23:00:31,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:00:31,552 INFO L93 Difference]: Finished difference Result 586 states and 788 transitions. [2020-07-21 23:00:31,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-21 23:00:31,553 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 133 [2020-07-21 23:00:31,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:00:31,567 INFO L225 Difference]: With dead ends: 586 [2020-07-21 23:00:31,568 INFO L226 Difference]: Without dead ends: 584 [2020-07-21 23:00:31,571 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 258 SyntacticMatches, 4 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-21 23:00:31,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 584 states. [2020-07-21 23:00:31,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 584 to 584. [2020-07-21 23:00:31,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 584 states. [2020-07-21 23:00:31,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 584 states to 584 states and 786 transitions. [2020-07-21 23:00:31,630 INFO L78 Accepts]: Start accepts. Automaton has 584 states and 786 transitions. Word has length 133 [2020-07-21 23:00:31,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:00:31,632 INFO L479 AbstractCegarLoop]: Abstraction has 584 states and 786 transitions. [2020-07-21 23:00:31,632 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 23:00:31,632 INFO L276 IsEmpty]: Start isEmpty. Operand 584 states and 786 transitions. [2020-07-21 23:00:31,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-07-21 23:00:31,639 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:00:31,639 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 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 23:00:31,853 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:00:31,853 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:00:31,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:00:31,854 INFO L82 PathProgramCache]: Analyzing trace with hash -1989249747, now seen corresponding path program 1 times [2020-07-21 23:00:31,854 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:00:31,854 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [368235680] [2020-07-21 23:00:31,855 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:00:31,935 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 23:00:31,935 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:00:31,937 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-21 23:00:31,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:00:32,024 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 23:00:32,024 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 23:00:32,025 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [368235680] [2020-07-21 23:00:32,025 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 23:00:32,025 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 23:00:32,025 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152207247] [2020-07-21 23:00:32,026 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 23:00:32,026 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:00:32,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 23:00:32,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 23:00:32,027 INFO L87 Difference]: Start difference. First operand 584 states and 786 transitions. Second operand 5 states. [2020-07-21 23:00:33,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:00:33,070 INFO L93 Difference]: Finished difference Result 1321 states and 1762 transitions. [2020-07-21 23:00:33,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 23:00:33,073 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 136 [2020-07-21 23:00:33,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:00:33,081 INFO L225 Difference]: With dead ends: 1321 [2020-07-21 23:00:33,081 INFO L226 Difference]: Without dead ends: 743 [2020-07-21 23:00:33,083 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-07-21 23:00:33,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 743 states. [2020-07-21 23:00:33,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 743 to 596. [2020-07-21 23:00:33,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 596 states. [2020-07-21 23:00:33,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 596 states to 596 states and 794 transitions. [2020-07-21 23:00:33,125 INFO L78 Accepts]: Start accepts. Automaton has 596 states and 794 transitions. Word has length 136 [2020-07-21 23:00:33,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:00:33,128 INFO L479 AbstractCegarLoop]: Abstraction has 596 states and 794 transitions. [2020-07-21 23:00:33,128 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 23:00:33,128 INFO L276 IsEmpty]: Start isEmpty. Operand 596 states and 794 transitions. [2020-07-21 23:00:33,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-07-21 23:00:33,135 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:00:33,136 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:00:33,350 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:00:33,351 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:00:33,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:00:33,352 INFO L82 PathProgramCache]: Analyzing trace with hash -1901765607, now seen corresponding path program 1 times [2020-07-21 23:00:33,353 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:00:33,353 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [193111843] [2020-07-21 23:00:33,354 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:00:33,437 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 23:00:33,438 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:00:33,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 25 conjunts are in the unsatisfiable core [2020-07-21 23:00:33,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:00:33,505 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 23:00:33,508 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-21 23:00:54,960 WARN L193 SmtUtils]: Spent 21.40 s on a formula simplification that was a NOOP. DAG size: 39 [2020-07-21 23:00:54,995 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-07-21 23:00:55,303 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 39 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 23:00:55,303 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 23:00:55,333 INFO L501 QuantifierPusher]: Distributing 5 disjuncts over 2 conjuncts [2020-07-21 23:00:55,395 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:00:55,396 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 23:00:55,398 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 23:00:55,399 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 23:00:55,401 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:00:55,402 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 23:00:55,404 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:00:55,405 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 23:01:01,492 WARN L193 SmtUtils]: Spent 6.06 s on a formula simplification. DAG size of input: 37 DAG size of output: 20 [2020-07-21 23:01:01,495 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [193111843] [2020-07-21 23:01:01,495 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-21 23:01:01,496 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-07-21 23:01:01,496 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669955027] [2020-07-21 23:01:01,496 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 23:01:01,497 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:01:01,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 23:01:01,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-07-21 23:01:01,497 INFO L87 Difference]: Start difference. First operand 596 states and 794 transitions. Second operand 6 states. [2020-07-21 23:01:02,183 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 31 [2020-07-21 23:01:20,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:01:20,906 INFO L93 Difference]: Finished difference Result 1539 states and 2219 transitions. [2020-07-21 23:01:20,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 23:01:20,910 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 142 [2020-07-21 23:01:20,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:01:20,918 INFO L225 Difference]: With dead ends: 1539 [2020-07-21 23:01:20,918 INFO L226 Difference]: Without dead ends: 1065 [2020-07-21 23:01:20,920 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 193 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 27.9s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-07-21 23:01:20,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1065 states. [2020-07-21 23:01:20,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1065 to 1049. [2020-07-21 23:01:20,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1049 states. [2020-07-21 23:01:20,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1049 states to 1049 states and 1465 transitions. [2020-07-21 23:01:20,974 INFO L78 Accepts]: Start accepts. Automaton has 1049 states and 1465 transitions. Word has length 142 [2020-07-21 23:01:20,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:01:20,975 INFO L479 AbstractCegarLoop]: Abstraction has 1049 states and 1465 transitions. [2020-07-21 23:01:20,975 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 23:01:20,975 INFO L276 IsEmpty]: Start isEmpty. Operand 1049 states and 1465 transitions. [2020-07-21 23:01:20,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-07-21 23:01:20,977 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:01:20,978 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:01:21,191 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:01:21,192 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:01:21,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:01:21,193 INFO L82 PathProgramCache]: Analyzing trace with hash -1171294982, now seen corresponding path program 1 times [2020-07-21 23:01:21,193 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:01:21,194 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1311349461] [2020-07-21 23:01:21,195 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:01:21,279 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 23:01:21,280 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:01:21,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-21 23:01:21,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:01:21,346 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 23:01:21,346 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 23:01:21,347 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1311349461] [2020-07-21 23:01:21,348 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 23:01:21,348 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 23:01:21,349 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739751723] [2020-07-21 23:01:21,350 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 23:01:21,350 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:01:21,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 23:01:21,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 23:01:21,351 INFO L87 Difference]: Start difference. First operand 1049 states and 1465 transitions. Second operand 5 states. [2020-07-21 23:01:22,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:01:22,733 INFO L93 Difference]: Finished difference Result 2442 states and 3670 transitions. [2020-07-21 23:01:22,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 23:01:22,736 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 185 [2020-07-21 23:01:22,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:01:22,755 INFO L225 Difference]: With dead ends: 2442 [2020-07-21 23:01:22,755 INFO L226 Difference]: Without dead ends: 1542 [2020-07-21 23:01:22,761 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-07-21 23:01:22,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1542 states. [2020-07-21 23:01:22,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1542 to 1506. [2020-07-21 23:01:22,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1506 states. [2020-07-21 23:01:22,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1506 states to 1506 states and 2009 transitions. [2020-07-21 23:01:22,828 INFO L78 Accepts]: Start accepts. Automaton has 1506 states and 2009 transitions. Word has length 185 [2020-07-21 23:01:22,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:01:22,828 INFO L479 AbstractCegarLoop]: Abstraction has 1506 states and 2009 transitions. [2020-07-21 23:01:22,829 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 23:01:22,829 INFO L276 IsEmpty]: Start isEmpty. Operand 1506 states and 2009 transitions. [2020-07-21 23:01:22,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-07-21 23:01:22,835 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:01:22,835 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 23:01:23,049 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:01:23,050 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:01:23,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:01:23,050 INFO L82 PathProgramCache]: Analyzing trace with hash -1905070339, now seen corresponding path program 1 times [2020-07-21 23:01:23,050 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:01:23,051 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [440907209] [2020-07-21 23:01:23,051 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:01:23,143 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 23:01:23,143 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:01:23,145 INFO L263 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 23:01:23,148 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:01:23,225 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 180 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 23:01:23,225 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 23:01:23,340 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 180 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 23:01:23,340 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [440907209] [2020-07-21 23:01:23,340 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 23:01:23,341 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-07-21 23:01:23,341 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738100597] [2020-07-21 23:01:23,342 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-21 23:01:23,342 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:01:23,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-21 23:01:23,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-07-21 23:01:23,343 INFO L87 Difference]: Start difference. First operand 1506 states and 2009 transitions. Second operand 7 states. [2020-07-21 23:01:25,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:01:25,271 INFO L93 Difference]: Finished difference Result 3475 states and 4853 transitions. [2020-07-21 23:01:25,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-21 23:01:25,274 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 212 [2020-07-21 23:01:25,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:01:25,287 INFO L225 Difference]: With dead ends: 3475 [2020-07-21 23:01:25,288 INFO L226 Difference]: Without dead ends: 2118 [2020-07-21 23:01:25,294 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 433 GetRequests, 422 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2020-07-21 23:01:25,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2118 states. [2020-07-21 23:01:25,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2118 to 1951. [2020-07-21 23:01:25,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1951 states. [2020-07-21 23:01:25,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1951 states to 1951 states and 2540 transitions. [2020-07-21 23:01:25,356 INFO L78 Accepts]: Start accepts. Automaton has 1951 states and 2540 transitions. Word has length 212 [2020-07-21 23:01:25,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:01:25,357 INFO L479 AbstractCegarLoop]: Abstraction has 1951 states and 2540 transitions. [2020-07-21 23:01:25,357 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-21 23:01:25,357 INFO L276 IsEmpty]: Start isEmpty. Operand 1951 states and 2540 transitions. [2020-07-21 23:01:25,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2020-07-21 23:01:25,361 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:01:25,361 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 23:01:25,576 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:01:25,576 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:01:25,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:01:25,577 INFO L82 PathProgramCache]: Analyzing trace with hash -1173404218, now seen corresponding path program 1 times [2020-07-21 23:01:25,577 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:01:25,578 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1356077550] [2020-07-21 23:01:25,578 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:01:25,676 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 23:01:25,676 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:01:25,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 23:01:25,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:01:25,722 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 180 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 23:01:25,722 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 23:01:25,877 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 180 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 23:01:25,877 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1356077550] [2020-07-21 23:01:25,877 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 23:01:25,878 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-07-21 23:01:25,878 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926545090] [2020-07-21 23:01:25,879 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-21 23:01:25,879 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:01:25,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-21 23:01:25,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-07-21 23:01:25,880 INFO L87 Difference]: Start difference. First operand 1951 states and 2540 transitions. Second operand 7 states. [2020-07-21 23:01:27,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:01:27,481 INFO L93 Difference]: Finished difference Result 4496 states and 5943 transitions. [2020-07-21 23:01:27,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-21 23:01:27,482 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 215 [2020-07-21 23:01:27,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:01:27,494 INFO L225 Difference]: With dead ends: 4496 [2020-07-21 23:01:27,494 INFO L226 Difference]: Without dead ends: 2694 [2020-07-21 23:01:27,500 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 436 GetRequests, 425 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2020-07-21 23:01:27,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2694 states. [2020-07-21 23:01:27,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2694 to 2398. [2020-07-21 23:01:27,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2398 states. [2020-07-21 23:01:27,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2398 states to 2398 states and 2894 transitions. [2020-07-21 23:01:27,567 INFO L78 Accepts]: Start accepts. Automaton has 2398 states and 2894 transitions. Word has length 215 [2020-07-21 23:01:27,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:01:27,567 INFO L479 AbstractCegarLoop]: Abstraction has 2398 states and 2894 transitions. [2020-07-21 23:01:27,567 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-21 23:01:27,567 INFO L276 IsEmpty]: Start isEmpty. Operand 2398 states and 2894 transitions. [2020-07-21 23:01:27,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2020-07-21 23:01:27,574 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:01:27,574 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 23:01:27,787 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:01:27,788 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:01:27,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:01:27,789 INFO L82 PathProgramCache]: Analyzing trace with hash 1481429953, now seen corresponding path program 1 times [2020-07-21 23:01:27,789 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:01:27,790 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [161299067] [2020-07-21 23:01:27,790 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:01:27,911 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 23:01:27,911 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:01:27,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 388 conjuncts, 17 conjunts are in the unsatisfiable core [2020-07-21 23:01:27,917 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:01:28,038 INFO L320 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 3, 3, 1] term [2020-07-21 23:01:28,039 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-07-21 23:01:28,040 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-07-21 23:01:28,086 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 23:01:28,188 INFO L134 CoverageAnalysis]: Checked inductivity of 387 backedges. 261 proven. 69 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-07-21 23:01:28,188 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 23:01:28,336 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 23:01:28,336 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:01:28,337 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:01:28,338 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 23:01:28,391 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:01:28,392 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 23:01:28,594 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:01:28,596 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:01:28,697 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:01:28,698 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:01:29,069 INFO L134 CoverageAnalysis]: Checked inductivity of 387 backedges. 173 proven. 210 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-07-21 23:01:29,069 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [161299067] [2020-07-21 23:01:29,069 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 23:01:29,069 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2020-07-21 23:01:29,070 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010329326] [2020-07-21 23:01:29,070 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-07-21 23:01:29,071 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:01:29,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-07-21 23:01:29,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2020-07-21 23:01:29,071 INFO L87 Difference]: Start difference. First operand 2398 states and 2894 transitions. Second operand 13 states. [2020-07-21 23:01:35,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:01:35,061 INFO L93 Difference]: Finished difference Result 6598 states and 8269 transitions. [2020-07-21 23:01:35,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-07-21 23:01:35,063 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 298 [2020-07-21 23:01:35,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:01:35,083 INFO L225 Difference]: With dead ends: 6598 [2020-07-21 23:01:35,084 INFO L226 Difference]: Without dead ends: 4349 [2020-07-21 23:01:35,091 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 648 GetRequests, 609 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 323 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=398, Invalid=1162, Unknown=0, NotChecked=0, Total=1560 [2020-07-21 23:01:35,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4349 states. [2020-07-21 23:01:35,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4349 to 3880. [2020-07-21 23:01:35,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3880 states. [2020-07-21 23:01:35,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3880 states to 3880 states and 4687 transitions. [2020-07-21 23:01:35,228 INFO L78 Accepts]: Start accepts. Automaton has 3880 states and 4687 transitions. Word has length 298 [2020-07-21 23:01:35,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:01:35,228 INFO L479 AbstractCegarLoop]: Abstraction has 3880 states and 4687 transitions. [2020-07-21 23:01:35,229 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-07-21 23:01:35,229 INFO L276 IsEmpty]: Start isEmpty. Operand 3880 states and 4687 transitions. [2020-07-21 23:01:35,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2020-07-21 23:01:35,239 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:01:35,239 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:01:35,452 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:01:35,453 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:01:35,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:01:35,454 INFO L82 PathProgramCache]: Analyzing trace with hash -878123566, now seen corresponding path program 1 times [2020-07-21 23:01:35,454 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:01:35,454 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1947458228] [2020-07-21 23:01:35,455 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:01:35,603 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 23:01:35,603 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:01:35,605 INFO L263 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 23 conjunts are in the unsatisfiable core [2020-07-21 23:01:35,611 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:01:35,644 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 23:01:35,645 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-21 23:01:35,646 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-21 23:01:35,647 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-07-21 23:01:35,647 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-07-21 23:01:35,649 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-07-21 23:01:35,649 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-07-21 23:01:35,651 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-07-21 23:01:35,651 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-07-21 23:01:35,652 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-07-21 23:01:35,654 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 23:01:35,654 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-21 23:01:35,655 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-07-21 23:01:35,656 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-21 23:01:35,657 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-07-21 23:01:35,657 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-07-21 23:01:35,659 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-07-21 23:01:35,660 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-07-21 23:01:35,661 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-21 23:01:35,662 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-07-21 23:01:35,663 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-07-21 23:01:35,664 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-07-21 23:01:35,664 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-07-21 23:01:35,665 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-07-21 23:01:35,666 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-07-21 23:01:35,667 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-07-21 23:02:00,063 WARN L193 SmtUtils]: Spent 24.34 s on a formula simplification. DAG size of input: 69 DAG size of output: 38 [2020-07-21 23:02:00,091 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-07-21 23:02:02,206 INFO L501 QuantifierPusher]: Distributing 6 conjuncts over 2 disjuncts [2020-07-21 23:02:02,524 INFO L134 CoverageAnalysis]: Checked inductivity of 419 backedges. 358 proven. 4 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-07-21 23:02:02,525 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 23:02:02,642 INFO L501 QuantifierPusher]: Distributing 4 disjuncts over 2 conjuncts [2020-07-21 23:02:02,862 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:02:02,863 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 23:02:02,864 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 23:02:02,864 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-21 23:02:02,865 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-21 23:02:02,866 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-21 23:02:02,868 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 6 conjuncts [2020-07-21 23:02:02,869 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 23:02:02,869 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-21 23:02:02,870 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-21 23:02:02,871 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-21 23:02:02,872 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 23:02:02,873 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-21 23:02:02,874 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-21 23:02:02,875 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 23:02:02,876 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 6 conjuncts [2020-07-21 23:02:02,877 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-21 23:02:02,878 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 6 conjuncts [2020-07-21 23:02:02,879 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 23:02:02,880 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 23:02:02,881 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-21 23:02:02,882 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 23:02:02,882 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 6 conjuncts [2020-07-21 23:02:02,883 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-21 23:02:02,884 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-21 23:02:02,885 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-21 23:02:02,886 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 23:02:02,887 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:02:02,887 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 23:02:02,888 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 23:02:02,889 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-21 23:02:02,889 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-21 23:02:02,890 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-21 23:02:02,891 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 6 conjuncts [2020-07-21 23:02:02,893 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 23:02:02,893 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-21 23:02:02,894 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-21 23:02:02,894 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-21 23:02:02,896 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 23:02:02,897 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-21 23:02:02,897 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-21 23:02:02,898 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 23:02:02,899 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 6 conjuncts [2020-07-21 23:02:02,900 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-21 23:02:02,901 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 6 conjuncts [2020-07-21 23:02:02,902 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 23:02:02,903 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 23:02:02,904 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-21 23:02:02,905 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 23:02:02,905 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 6 conjuncts [2020-07-21 23:02:02,906 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-21 23:02:02,907 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-21 23:02:02,908 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-21 23:02:02,910 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:02:02,910 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 23:02:02,911 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 23:02:02,911 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-21 23:02:02,912 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-21 23:02:02,913 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-21 23:02:02,914 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 6 conjuncts [2020-07-21 23:02:02,915 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 23:02:02,915 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-21 23:02:02,916 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-21 23:02:02,916 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-21 23:02:02,917 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 23:02:02,918 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-21 23:02:02,919 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-21 23:02:02,920 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 23:02:02,921 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 6 conjuncts [2020-07-21 23:02:02,922 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-21 23:02:02,923 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 6 conjuncts [2020-07-21 23:02:02,925 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 23:02:02,925 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 23:02:02,926 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-21 23:02:02,927 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 23:02:02,928 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 6 conjuncts [2020-07-21 23:02:02,929 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-21 23:02:02,929 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-21 23:02:02,930 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-21 23:02:02,932 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:02:02,933 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 23:02:02,933 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 4 conjuncts [2020-07-21 23:02:02,934 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 4 conjuncts [2020-07-21 23:02:02,935 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 23:02:02,936 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-21 23:02:02,937 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 23:02:02,938 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 23:02:02,938 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 4 conjuncts [2020-07-21 23:02:02,939 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 23:02:02,940 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-21 23:02:02,941 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 23:02:02,942 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 4 conjuncts [2020-07-21 23:02:02,942 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-21 23:02:02,943 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-21 23:02:02,944 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 23:02:02,945 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 23:02:02,945 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 23:02:02,946 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 23:02:02,947 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 23:02:02,947 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 23:02:02,948 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 23:02:13,356 WARN L193 SmtUtils]: Spent 10.21 s on a formula simplification. DAG size of input: 109 DAG size of output: 25 [2020-07-21 23:02:13,358 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1947458228] [2020-07-21 23:02:13,358 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-21 23:02:13,359 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-07-21 23:02:13,359 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931001334] [2020-07-21 23:02:13,360 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-21 23:02:13,360 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:02:13,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-21 23:02:13,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=138, Unknown=1, NotChecked=0, Total=182 [2020-07-21 23:02:13,360 INFO L87 Difference]: Start difference. First operand 3880 states and 4687 transitions. Second operand 9 states. [2020-07-21 23:02:18,823 WARN L193 SmtUtils]: Spent 4.61 s on a formula simplification. DAG size of input: 57 DAG size of output: 43 [2020-07-21 23:03:28,444 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 40 [2020-07-21 23:04:02,368 WARN L193 SmtUtils]: Spent 32.27 s on a formula simplification. DAG size of input: 48 DAG size of output: 48 [2020-07-21 23:04:02,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:04:02,500 INFO L93 Difference]: Finished difference Result 7929 states and 9688 transitions. [2020-07-21 23:04:02,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-07-21 23:04:02,503 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 347 [2020-07-21 23:04:02,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:04:02,522 INFO L225 Difference]: With dead ends: 7929 [2020-07-21 23:04:02,522 INFO L226 Difference]: Without dead ends: 4200 [2020-07-21 23:04:02,533 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 588 GetRequests, 561 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 76.6s TimeCoverageRelationStatistics Valid=223, Invalid=531, Unknown=2, NotChecked=0, Total=756 [2020-07-21 23:04:02,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4200 states. [2020-07-21 23:04:02,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4200 to 4180. [2020-07-21 23:04:02,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4180 states. [2020-07-21 23:04:02,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4180 states to 4180 states and 5017 transitions. [2020-07-21 23:04:02,641 INFO L78 Accepts]: Start accepts. Automaton has 4180 states and 5017 transitions. Word has length 347 [2020-07-21 23:04:02,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:04:02,642 INFO L479 AbstractCegarLoop]: Abstraction has 4180 states and 5017 transitions. [2020-07-21 23:04:02,642 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-21 23:04:02,642 INFO L276 IsEmpty]: Start isEmpty. Operand 4180 states and 5017 transitions. [2020-07-21 23:04:02,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2020-07-21 23:04:02,721 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:04:02,722 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:04:02,922 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:04:02,922 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:04:02,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:04:02,923 INFO L82 PathProgramCache]: Analyzing trace with hash 878111809, now seen corresponding path program 1 times [2020-07-21 23:04:02,923 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:04:02,924 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1688259338] [2020-07-21 23:04:02,924 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:04:03,237 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 23:04:03,237 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:04:03,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 575 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 23:04:03,245 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:04:03,307 INFO L134 CoverageAnalysis]: Checked inductivity of 419 backedges. 174 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2020-07-21 23:04:03,308 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 23:04:03,308 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1688259338] [2020-07-21 23:04:03,308 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 23:04:03,308 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 23:04:03,308 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403936725] [2020-07-21 23:04:03,309 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 23:04:03,309 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:04:03,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 23:04:03,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 23:04:03,310 INFO L87 Difference]: Start difference. First operand 4180 states and 5017 transitions. Second operand 3 states. [2020-07-21 23:04:04,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:04:04,669 INFO L93 Difference]: Finished difference Result 8928 states and 10741 transitions. [2020-07-21 23:04:04,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 23:04:04,672 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 366 [2020-07-21 23:04:04,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:04:04,688 INFO L225 Difference]: With dead ends: 8928 [2020-07-21 23:04:04,688 INFO L226 Difference]: Without dead ends: 3884 [2020-07-21 23:04:04,700 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 365 GetRequests, 364 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 23:04:04,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3884 states. [2020-07-21 23:04:04,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3884 to 3884. [2020-07-21 23:04:04,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3884 states. [2020-07-21 23:04:04,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3884 states to 3884 states and 4630 transitions. [2020-07-21 23:04:04,815 INFO L78 Accepts]: Start accepts. Automaton has 3884 states and 4630 transitions. Word has length 366 [2020-07-21 23:04:04,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:04:04,816 INFO L479 AbstractCegarLoop]: Abstraction has 3884 states and 4630 transitions. [2020-07-21 23:04:04,816 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 23:04:04,816 INFO L276 IsEmpty]: Start isEmpty. Operand 3884 states and 4630 transitions. [2020-07-21 23:04:04,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 440 [2020-07-21 23:04:04,831 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:04:04,831 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:04:05,045 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:04:05,046 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:04:05,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:04:05,047 INFO L82 PathProgramCache]: Analyzing trace with hash -22718950, now seen corresponding path program 1 times [2020-07-21 23:04:05,047 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:04:05,048 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1598972753] [2020-07-21 23:04:05,048 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:04:05,286 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 23:04:05,287 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:04:05,289 INFO L263 TraceCheckSpWp]: Trace formula consists of 526 conjuncts, 23 conjunts are in the unsatisfiable core [2020-07-21 23:04:05,295 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:04:05,837 WARN L193 SmtUtils]: Spent 431.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 38 [2020-07-21 23:04:05,916 INFO L320 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 3, 3, 1] term [2020-07-21 23:04:05,916 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-07-21 23:04:05,917 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-07-21 23:04:06,007 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 23:04:06,169 INFO L134 CoverageAnalysis]: Checked inductivity of 699 backedges. 404 proven. 167 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2020-07-21 23:04:06,170 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 23:04:06,418 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 23:04:06,419 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:06,420 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:06,420 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 23:04:06,477 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:06,478 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 23:04:06,665 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 25 [2020-07-21 23:04:06,868 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:06,870 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:06,870 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:06,871 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:06,888 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:06,889 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:06,889 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:06,889 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:06,890 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:06,892 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:06,892 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:06,893 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:07,349 INFO L134 CoverageAnalysis]: Checked inductivity of 699 backedges. 396 proven. 79 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2020-07-21 23:04:07,350 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1598972753] [2020-07-21 23:04:07,350 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 23:04:07,350 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5] total 12 [2020-07-21 23:04:07,350 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764373548] [2020-07-21 23:04:07,351 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-07-21 23:04:07,351 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:04:07,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-07-21 23:04:07,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-07-21 23:04:07,352 INFO L87 Difference]: Start difference. First operand 3884 states and 4630 transitions. Second operand 12 states. [2020-07-21 23:04:10,682 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 35 [2020-07-21 23:04:10,994 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 46 [2020-07-21 23:04:16,935 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 26 [2020-07-21 23:04:18,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:04:18,547 INFO L93 Difference]: Finished difference Result 8380 states and 10186 transitions. [2020-07-21 23:04:18,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-07-21 23:04:18,551 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 439 [2020-07-21 23:04:18,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:04:18,575 INFO L225 Difference]: With dead ends: 8380 [2020-07-21 23:04:18,575 INFO L226 Difference]: Without dead ends: 4647 [2020-07-21 23:04:18,586 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 906 GetRequests, 877 SyntacticMatches, 3 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=155, Invalid=601, Unknown=0, NotChecked=0, Total=756 [2020-07-21 23:04:18,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4647 states. [2020-07-21 23:04:18,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4647 to 4331. [2020-07-21 23:04:18,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4331 states. [2020-07-21 23:04:18,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4331 states to 4331 states and 5089 transitions. [2020-07-21 23:04:18,723 INFO L78 Accepts]: Start accepts. Automaton has 4331 states and 5089 transitions. Word has length 439 [2020-07-21 23:04:18,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:04:18,723 INFO L479 AbstractCegarLoop]: Abstraction has 4331 states and 5089 transitions. [2020-07-21 23:04:18,723 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-07-21 23:04:18,724 INFO L276 IsEmpty]: Start isEmpty. Operand 4331 states and 5089 transitions. [2020-07-21 23:04:18,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 452 [2020-07-21 23:04:18,751 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:04:18,752 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:04:18,966 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:04:18,967 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:04:18,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:04:18,968 INFO L82 PathProgramCache]: Analyzing trace with hash -2058003474, now seen corresponding path program 1 times [2020-07-21 23:04:18,969 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:04:18,969 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1949142066] [2020-07-21 23:04:18,969 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:04:19,282 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 23:04:19,282 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:04:19,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 701 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 23:04:19,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:04:19,410 INFO L134 CoverageAnalysis]: Checked inductivity of 714 backedges. 465 proven. 2 refuted. 0 times theorem prover too weak. 247 trivial. 0 not checked. [2020-07-21 23:04:19,410 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 23:04:19,646 INFO L134 CoverageAnalysis]: Checked inductivity of 714 backedges. 465 proven. 2 refuted. 0 times theorem prover too weak. 247 trivial. 0 not checked. [2020-07-21 23:04:19,646 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1949142066] [2020-07-21 23:04:19,646 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 23:04:19,646 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-07-21 23:04:19,647 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766845616] [2020-07-21 23:04:19,647 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 23:04:19,648 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:04:19,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 23:04:19,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-07-21 23:04:19,648 INFO L87 Difference]: Start difference. First operand 4331 states and 5089 transitions. Second operand 6 states. [2020-07-21 23:04:21,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:04:21,758 INFO L93 Difference]: Finished difference Result 8444 states and 10160 transitions. [2020-07-21 23:04:21,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 23:04:21,760 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 451 [2020-07-21 23:04:21,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:04:21,779 INFO L225 Difference]: With dead ends: 8444 [2020-07-21 23:04:21,779 INFO L226 Difference]: Without dead ends: 4415 [2020-07-21 23:04:21,788 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 907 GetRequests, 898 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-07-21 23:04:21,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4415 states. [2020-07-21 23:04:21,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4415 to 3878. [2020-07-21 23:04:21,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3878 states. [2020-07-21 23:04:21,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3878 states to 3878 states and 4372 transitions. [2020-07-21 23:04:21,914 INFO L78 Accepts]: Start accepts. Automaton has 3878 states and 4372 transitions. Word has length 451 [2020-07-21 23:04:21,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:04:21,916 INFO L479 AbstractCegarLoop]: Abstraction has 3878 states and 4372 transitions. [2020-07-21 23:04:21,916 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 23:04:21,916 INFO L276 IsEmpty]: Start isEmpty. Operand 3878 states and 4372 transitions. [2020-07-21 23:04:21,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 462 [2020-07-21 23:04:21,931 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:04:21,932 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:04:22,144 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:04:22,145 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:04:22,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:04:22,146 INFO L82 PathProgramCache]: Analyzing trace with hash -1054742122, now seen corresponding path program 1 times [2020-07-21 23:04:22,146 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:04:22,146 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1828183333] [2020-07-21 23:04:22,147 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:04:22,423 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 23:04:22,423 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:04:22,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 546 conjuncts, 12 conjunts are in the unsatisfiable core [2020-07-21 23:04:22,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:04:22,457 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 23:04:22,458 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-21 23:04:22,636 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 31 [2020-07-21 23:04:22,672 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 23:04:24,804 INFO L320 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-07-21 23:04:24,805 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 23:04:24,808 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 23:04:24,855 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 23:04:25,001 INFO L134 CoverageAnalysis]: Checked inductivity of 729 backedges. 534 proven. 2 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2020-07-21 23:04:25,002 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 23:04:25,223 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 23:04:25,224 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:25,225 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:25,226 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 23:04:25,279 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:25,280 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 23:04:25,482 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:25,484 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:25,485 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:25,486 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 23:04:25,497 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:25,498 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:04:25,837 INFO L134 CoverageAnalysis]: Checked inductivity of 729 backedges. 326 proven. 163 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2020-07-21 23:04:25,838 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1828183333] [2020-07-21 23:04:25,838 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 23:04:25,838 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5] total 10 [2020-07-21 23:04:25,838 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590593415] [2020-07-21 23:04:25,839 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-21 23:04:25,839 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:04:25,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-21 23:04:25,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=63, Unknown=1, NotChecked=0, Total=90 [2020-07-21 23:04:25,840 INFO L87 Difference]: Start difference. First operand 3878 states and 4372 transitions. Second operand 10 states. [2020-07-21 23:05:09,660 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 31 [2020-07-21 23:05:16,811 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 25 [2020-07-21 23:05:29,243 WARN L193 SmtUtils]: Spent 2.28 s on a formula simplification. DAG size of input: 51 DAG size of output: 30 [2020-07-21 23:06:44,001 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 23 [2020-07-21 23:06:59,152 WARN L193 SmtUtils]: Spent 2.15 s on a formula simplification. DAG size of input: 43 DAG size of output: 21 [2020-07-21 23:10:06,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:10:06,787 INFO L93 Difference]: Finished difference Result 8066 states and 9252 transitions. [2020-07-21 23:10:06,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-07-21 23:10:06,794 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 461 [2020-07-21 23:10:06,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:10:06,795 INFO L225 Difference]: With dead ends: 8066 [2020-07-21 23:10:06,795 INFO L226 Difference]: Without dead ends: 0 [2020-07-21 23:10:06,812 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 952 GetRequests, 924 SyntacticMatches, 4 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 21.0s TimeCoverageRelationStatistics Valid=188, Invalid=455, Unknown=7, NotChecked=0, Total=650 [2020-07-21 23:10:06,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-21 23:10:06,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-21 23:10:06,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-21 23:10:06,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-21 23:10:06,814 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 461 [2020-07-21 23:10:06,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:10:06,814 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-21 23:10:06,814 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-21 23:10:06,814 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-21 23:10:06,814 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-21 23:10:07,015 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:10:07,019 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-21 23:10:08,372 WARN L193 SmtUtils]: Spent 481.00 ms on a formula simplification. DAG size of input: 382 DAG size of output: 350 [2020-07-21 23:10:08,780 WARN L193 SmtUtils]: Spent 403.00 ms on a formula simplification. DAG size of input: 382 DAG size of output: 350 [2020-07-21 23:10:08,891 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 16 [2020-07-21 23:10:09,185 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 31 [2020-07-21 23:10:14,309 WARN L193 SmtUtils]: Spent 5.10 s on a formula simplification. DAG size of input: 324 DAG size of output: 76 [2020-07-21 23:10:21,670 WARN L193 SmtUtils]: Spent 7.25 s on a formula simplification. DAG size of input: 349 DAG size of output: 61 [2020-07-21 23:10:27,237 WARN L193 SmtUtils]: Spent 5.56 s on a formula simplification. DAG size of input: 349 DAG size of output: 61 [2020-07-21 23:10:27,244 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-21 23:10:27,244 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (<= |old(~a19~0)| ~a19~0) (<= ~a10~0 |old(~a10~0)|) (<= |old(~a10~0)| ~a10~0) (<= ~a19~0 |old(~a19~0)|) (= ~a1~0 |old(~a1~0)|)) [2020-07-21 23:10:27,244 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-21 23:10:27,245 INFO L268 CegarLoopResult]: For program point L465(lines 465 572) no Hoare annotation was computed. [2020-07-21 23:10:27,245 INFO L268 CegarLoopResult]: For program point L201-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:10:27,245 INFO L268 CegarLoopResult]: For program point L168-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:10:27,245 INFO L268 CegarLoopResult]: For program point L135-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:10:27,245 INFO L268 CegarLoopResult]: For program point L102-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:10:27,245 INFO L268 CegarLoopResult]: For program point L69-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:10:27,245 INFO L268 CegarLoopResult]: For program point L36-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:10:27,245 INFO L268 CegarLoopResult]: For program point L499(lines 499 572) no Hoare annotation was computed. [2020-07-21 23:10:27,245 INFO L268 CegarLoopResult]: For program point L301(lines 301 572) no Hoare annotation was computed. [2020-07-21 23:10:27,245 INFO L268 CegarLoopResult]: For program point L202(line 202) no Hoare annotation was computed. [2020-07-21 23:10:27,245 INFO L268 CegarLoopResult]: For program point L169(line 169) no Hoare annotation was computed. [2020-07-21 23:10:27,245 INFO L268 CegarLoopResult]: For program point L136(line 136) no Hoare annotation was computed. [2020-07-21 23:10:27,245 INFO L268 CegarLoopResult]: For program point L103(line 103) no Hoare annotation was computed. [2020-07-21 23:10:27,246 INFO L268 CegarLoopResult]: For program point L70(line 70) no Hoare annotation was computed. [2020-07-21 23:10:27,246 INFO L268 CegarLoopResult]: For program point L37(line 37) no Hoare annotation was computed. [2020-07-21 23:10:27,246 INFO L268 CegarLoopResult]: For program point L335(lines 335 572) no Hoare annotation was computed. [2020-07-21 23:10:27,246 INFO L268 CegarLoopResult]: For program point L236(lines 236 572) no Hoare annotation was computed. [2020-07-21 23:10:27,246 INFO L268 CegarLoopResult]: For program point L534(lines 534 572) no Hoare annotation was computed. [2020-07-21 23:10:27,246 INFO L268 CegarLoopResult]: For program point L171-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:10:27,246 INFO L268 CegarLoopResult]: For program point L138-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:10:27,246 INFO L268 CegarLoopResult]: For program point L105-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:10:27,246 INFO L268 CegarLoopResult]: For program point L72-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:10:27,246 INFO L268 CegarLoopResult]: For program point L39-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:10:27,246 INFO L268 CegarLoopResult]: For program point L436(lines 436 572) no Hoare annotation was computed. [2020-07-21 23:10:27,246 INFO L268 CegarLoopResult]: For program point L403(lines 403 572) no Hoare annotation was computed. [2020-07-21 23:10:27,246 INFO L268 CegarLoopResult]: For program point L370(lines 370 572) no Hoare annotation was computed. [2020-07-21 23:10:27,247 INFO L268 CegarLoopResult]: For program point L271(lines 271 572) no Hoare annotation was computed. [2020-07-21 23:10:27,247 INFO L268 CegarLoopResult]: For program point L172(line 172) no Hoare annotation was computed. [2020-07-21 23:10:27,247 INFO L268 CegarLoopResult]: For program point L139(line 139) no Hoare annotation was computed. [2020-07-21 23:10:27,247 INFO L268 CegarLoopResult]: For program point L106(line 106) no Hoare annotation was computed. [2020-07-21 23:10:27,247 INFO L268 CegarLoopResult]: For program point L73(line 73) no Hoare annotation was computed. [2020-07-21 23:10:27,247 INFO L268 CegarLoopResult]: For program point L40(line 40) no Hoare annotation was computed. [2020-07-21 23:10:27,247 INFO L268 CegarLoopResult]: For program point L569(lines 569 572) no Hoare annotation was computed. [2020-07-21 23:10:27,247 INFO L268 CegarLoopResult]: For program point L239(lines 239 572) no Hoare annotation was computed. [2020-07-21 23:10:27,247 INFO L268 CegarLoopResult]: For program point L504(lines 504 572) no Hoare annotation was computed. [2020-07-21 23:10:27,247 INFO L268 CegarLoopResult]: For program point L471(lines 471 572) no Hoare annotation was computed. [2020-07-21 23:10:27,247 INFO L268 CegarLoopResult]: For program point calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION(line 175) no Hoare annotation was computed. [2020-07-21 23:10:27,247 INFO L268 CegarLoopResult]: For program point L306(lines 306 572) no Hoare annotation was computed. [2020-07-21 23:10:27,247 INFO L268 CegarLoopResult]: For program point L174-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:10:27,248 INFO L268 CegarLoopResult]: For program point L141-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:10:27,248 INFO L268 CegarLoopResult]: For program point L108-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:10:27,248 INFO L268 CegarLoopResult]: For program point L75-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:10:27,248 INFO L268 CegarLoopResult]: For program point L42-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:10:27,248 INFO L268 CegarLoopResult]: For program point L340(lines 340 572) no Hoare annotation was computed. [2020-07-21 23:10:27,248 INFO L268 CegarLoopResult]: For program point L175(line 175) no Hoare annotation was computed. [2020-07-21 23:10:27,248 INFO L268 CegarLoopResult]: For program point L142(line 142) no Hoare annotation was computed. [2020-07-21 23:10:27,248 INFO L268 CegarLoopResult]: For program point L109(line 109) no Hoare annotation was computed. [2020-07-21 23:10:27,248 INFO L268 CegarLoopResult]: For program point L76(line 76) no Hoare annotation was computed. [2020-07-21 23:10:27,248 INFO L268 CegarLoopResult]: For program point L43(line 43) no Hoare annotation was computed. [2020-07-21 23:10:27,248 INFO L268 CegarLoopResult]: For program point L540(lines 540 572) no Hoare annotation was computed. [2020-07-21 23:10:27,249 INFO L268 CegarLoopResult]: For program point L408(lines 408 572) no Hoare annotation was computed. [2020-07-21 23:10:27,249 INFO L268 CegarLoopResult]: For program point L375(lines 375 572) no Hoare annotation was computed. [2020-07-21 23:10:27,249 INFO L268 CegarLoopResult]: For program point L210(lines 210 572) no Hoare annotation was computed. [2020-07-21 23:10:27,249 INFO L268 CegarLoopResult]: For program point L177-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:10:27,249 INFO L268 CegarLoopResult]: For program point L144-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:10:27,249 INFO L268 CegarLoopResult]: For program point L111-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:10:27,249 INFO L268 CegarLoopResult]: For program point L78-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:10:27,249 INFO L268 CegarLoopResult]: For program point L45-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:10:27,249 INFO L268 CegarLoopResult]: For program point L442(lines 442 572) no Hoare annotation was computed. [2020-07-21 23:10:27,250 INFO L268 CegarLoopResult]: For program point L277(lines 277 572) no Hoare annotation was computed. [2020-07-21 23:10:27,250 INFO L268 CegarLoopResult]: For program point L244(lines 244 572) no Hoare annotation was computed. [2020-07-21 23:10:27,250 INFO L268 CegarLoopResult]: For program point L178(line 178) no Hoare annotation was computed. [2020-07-21 23:10:27,250 INFO L268 CegarLoopResult]: For program point L145(line 145) no Hoare annotation was computed. [2020-07-21 23:10:27,250 INFO L268 CegarLoopResult]: For program point L112(line 112) no Hoare annotation was computed. [2020-07-21 23:10:27,250 INFO L268 CegarLoopResult]: For program point L79(line 79) no Hoare annotation was computed. [2020-07-21 23:10:27,250 INFO L268 CegarLoopResult]: For program point L46(line 46) no Hoare annotation was computed. [2020-07-21 23:10:27,250 INFO L268 CegarLoopResult]: For program point L509(lines 509 572) no Hoare annotation was computed. [2020-07-21 23:10:27,250 INFO L268 CegarLoopResult]: For program point L476(lines 476 572) no Hoare annotation was computed. [2020-07-21 23:10:27,250 INFO L268 CegarLoopResult]: For program point L378(lines 378 572) no Hoare annotation was computed. [2020-07-21 23:10:27,251 INFO L268 CegarLoopResult]: For program point L345(lines 345 572) no Hoare annotation was computed. [2020-07-21 23:10:27,251 INFO L268 CegarLoopResult]: For program point L312(lines 312 572) no Hoare annotation was computed. [2020-07-21 23:10:27,251 INFO L268 CegarLoopResult]: For program point L180-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:10:27,251 INFO L268 CegarLoopResult]: For program point L147-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:10:27,251 INFO L268 CegarLoopResult]: For program point L114-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:10:27,251 INFO L268 CegarLoopResult]: For program point L81-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:10:27,251 INFO L268 CegarLoopResult]: For program point L48-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:10:27,251 INFO L268 CegarLoopResult]: For program point L181(line 181) no Hoare annotation was computed. [2020-07-21 23:10:27,252 INFO L268 CegarLoopResult]: For program point L148(line 148) no Hoare annotation was computed. [2020-07-21 23:10:27,252 INFO L268 CegarLoopResult]: For program point L115(line 115) no Hoare annotation was computed. [2020-07-21 23:10:27,252 INFO L268 CegarLoopResult]: For program point L82(line 82) no Hoare annotation was computed. [2020-07-21 23:10:27,252 INFO L268 CegarLoopResult]: For program point L49(line 49) no Hoare annotation was computed. [2020-07-21 23:10:27,252 INFO L268 CegarLoopResult]: For program point L545(lines 545 572) no Hoare annotation was computed. [2020-07-21 23:10:27,252 INFO L268 CegarLoopResult]: For program point L215(lines 215 572) no Hoare annotation was computed. [2020-07-21 23:10:27,252 INFO L268 CegarLoopResult]: For program point L414(lines 414 572) no Hoare annotation was computed. [2020-07-21 23:10:27,252 INFO L268 CegarLoopResult]: For program point L249(lines 249 572) no Hoare annotation was computed. [2020-07-21 23:10:27,252 INFO L268 CegarLoopResult]: For program point L183-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:10:27,253 INFO L268 CegarLoopResult]: For program point L150-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:10:27,253 INFO L268 CegarLoopResult]: For program point L117-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:10:27,253 INFO L268 CegarLoopResult]: For program point L84-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:10:27,253 INFO L268 CegarLoopResult]: For program point L51-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:10:27,253 INFO L268 CegarLoopResult]: For program point calculate_outputFINAL(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:10:27,253 INFO L268 CegarLoopResult]: For program point calculate_outputEXIT(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:10:27,253 INFO L268 CegarLoopResult]: For program point L514(lines 514 572) no Hoare annotation was computed. [2020-07-21 23:10:27,253 INFO L268 CegarLoopResult]: For program point L481(lines 481 572) no Hoare annotation was computed. [2020-07-21 23:10:27,254 INFO L268 CegarLoopResult]: For program point L448(lines 448 572) no Hoare annotation was computed. [2020-07-21 23:10:27,254 INFO L268 CegarLoopResult]: For program point L283(lines 283 572) no Hoare annotation was computed. [2020-07-21 23:10:27,254 INFO L268 CegarLoopResult]: For program point L184(line 184) no Hoare annotation was computed. [2020-07-21 23:10:27,254 INFO L268 CegarLoopResult]: For program point L151(line 151) no Hoare annotation was computed. [2020-07-21 23:10:27,254 INFO L268 CegarLoopResult]: For program point L118(line 118) no Hoare annotation was computed. [2020-07-21 23:10:27,254 INFO L268 CegarLoopResult]: For program point L85(line 85) no Hoare annotation was computed. [2020-07-21 23:10:27,254 INFO L268 CegarLoopResult]: For program point L52(line 52) no Hoare annotation was computed. [2020-07-21 23:10:27,254 INFO L268 CegarLoopResult]: For program point L548(lines 548 572) no Hoare annotation was computed. [2020-07-21 23:10:27,254 INFO L268 CegarLoopResult]: For program point L383(lines 383 572) no Hoare annotation was computed. [2020-07-21 23:10:27,255 INFO L268 CegarLoopResult]: For program point L317(lines 317 572) no Hoare annotation was computed. [2020-07-21 23:10:27,255 INFO L268 CegarLoopResult]: For program point L351(lines 351 572) no Hoare annotation was computed. [2020-07-21 23:10:27,255 INFO L268 CegarLoopResult]: For program point L186-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:10:27,255 INFO L268 CegarLoopResult]: For program point L153-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:10:27,255 INFO L268 CegarLoopResult]: For program point L120-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:10:27,255 INFO L268 CegarLoopResult]: For program point L87-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:10:27,255 INFO L268 CegarLoopResult]: For program point L21(lines 21 23) no Hoare annotation was computed. [2020-07-21 23:10:27,255 INFO L268 CegarLoopResult]: For program point L54-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:10:27,255 INFO L268 CegarLoopResult]: For program point L21-2(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:10:27,255 INFO L268 CegarLoopResult]: For program point L517(lines 517 572) no Hoare annotation was computed. [2020-07-21 23:10:27,256 INFO L268 CegarLoopResult]: For program point L286(lines 286 572) no Hoare annotation was computed. [2020-07-21 23:10:27,256 INFO L268 CegarLoopResult]: For program point L220(lines 220 572) no Hoare annotation was computed. [2020-07-21 23:10:27,256 INFO L268 CegarLoopResult]: For program point L187(line 187) no Hoare annotation was computed. [2020-07-21 23:10:27,256 INFO L268 CegarLoopResult]: For program point L154(line 154) no Hoare annotation was computed. [2020-07-21 23:10:27,256 INFO L268 CegarLoopResult]: For program point L121(line 121) no Hoare annotation was computed. [2020-07-21 23:10:27,256 INFO L268 CegarLoopResult]: For program point L88(line 88) no Hoare annotation was computed. [2020-07-21 23:10:27,256 INFO L268 CegarLoopResult]: For program point L55(line 55) no Hoare annotation was computed. [2020-07-21 23:10:27,256 INFO L268 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-07-21 23:10:27,256 INFO L268 CegarLoopResult]: For program point L419(lines 419 572) no Hoare annotation was computed. [2020-07-21 23:10:27,257 INFO L268 CegarLoopResult]: For program point L320(lines 320 572) no Hoare annotation was computed. [2020-07-21 23:10:27,257 INFO L268 CegarLoopResult]: For program point L254(lines 254 572) no Hoare annotation was computed. [2020-07-21 23:10:27,257 INFO L268 CegarLoopResult]: For program point L354(lines 354 572) no Hoare annotation was computed. [2020-07-21 23:10:27,257 INFO L268 CegarLoopResult]: For program point L189-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:10:27,257 INFO L268 CegarLoopResult]: For program point L156-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:10:27,257 INFO L268 CegarLoopResult]: For program point L123-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:10:27,257 INFO L268 CegarLoopResult]: For program point L90-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:10:27,257 INFO L268 CegarLoopResult]: For program point L57-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:10:27,257 INFO L268 CegarLoopResult]: For program point L24-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:10:27,258 INFO L268 CegarLoopResult]: For program point L487(lines 487 572) no Hoare annotation was computed. [2020-07-21 23:10:27,258 INFO L268 CegarLoopResult]: For program point L454(lines 454 572) no Hoare annotation was computed. [2020-07-21 23:10:27,258 INFO L268 CegarLoopResult]: For program point L388(lines 388 572) no Hoare annotation was computed. [2020-07-21 23:10:27,258 INFO L268 CegarLoopResult]: For program point L190(line 190) no Hoare annotation was computed. [2020-07-21 23:10:27,258 INFO L268 CegarLoopResult]: For program point L157(line 157) no Hoare annotation was computed. [2020-07-21 23:10:27,258 INFO L268 CegarLoopResult]: For program point L124(line 124) no Hoare annotation was computed. [2020-07-21 23:10:27,258 INFO L268 CegarLoopResult]: For program point L91(line 91) no Hoare annotation was computed. [2020-07-21 23:10:27,258 INFO L268 CegarLoopResult]: For program point L58(line 58) no Hoare annotation was computed. [2020-07-21 23:10:27,259 INFO L268 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-07-21 23:10:27,259 INFO L268 CegarLoopResult]: For program point L554(lines 554 572) no Hoare annotation was computed. [2020-07-21 23:10:27,259 INFO L268 CegarLoopResult]: For program point L323(lines 323 572) no Hoare annotation was computed. [2020-07-21 23:10:27,259 INFO L264 CegarLoopResult]: At program point calculate_outputENTRY(lines 20 574) the Hoare annotation is: (let ((.cse4 (<= ~a10~0 |old(~a10~0)|)) (.cse5 (<= |old(~a10~0)| ~a10~0)) (.cse6 (<= ~a19~0 |old(~a19~0)|)) (.cse7 (= ~a1~0 |old(~a1~0)|))) (let ((.cse0 (not (= 0 ~a12~0))) (.cse1 (not (= 14 ~a4~0))) (.cse3 (not (<= |old(~a19~0)| 9))) (.cse2 (and (<= |old(~a19~0)| ~a19~0) .cse4 .cse5 .cse6 .cse7))) (and (or (forall ((v_prenex_11 Int)) (or (not (<= 23 v_prenex_11)) (not (<= 0 (+ v_prenex_11 345534))) (not (<= (+ (mod (+ v_prenex_11 36) 89) 110) |old(~a1~0)|)))) .cse0 .cse1 .cse2 .cse3) (or (not (< 0 |old(~a10~0)|)) (and (not (< |old(~a10~0)| 2)) (not (< |old(~a1~0)| 39))) .cse0 (not (<= 9 |old(~a19~0)|)) .cse1 .cse2 (not (<= |old(~a10~0)| 2))) (or (not (<= |old(~a10~0)| 0)) .cse0 .cse1 .cse2 (not (< (div (+ |old(~a1~0)| (- 227431)) 5) 39))) (or (not (<= |old(~a19~0)| 7)) (and .cse4 .cse5 .cse6 .cse7) .cse0 .cse1) (or .cse0 .cse1 .cse3 .cse2 (not (<= 2 |old(~a10~0)|)))))) [2020-07-21 23:10:27,259 INFO L268 CegarLoopResult]: For program point L357(lines 357 572) no Hoare annotation was computed. [2020-07-21 23:10:27,259 INFO L268 CegarLoopResult]: For program point L291(lines 291 572) no Hoare annotation was computed. [2020-07-21 23:10:27,260 INFO L268 CegarLoopResult]: For program point L225(lines 225 572) no Hoare annotation was computed. [2020-07-21 23:10:27,260 INFO L268 CegarLoopResult]: For program point L192-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:10:27,260 INFO L268 CegarLoopResult]: For program point L159-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:10:27,260 INFO L268 CegarLoopResult]: For program point L126-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:10:27,260 INFO L268 CegarLoopResult]: For program point L93-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:10:27,260 INFO L268 CegarLoopResult]: For program point L60-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:10:27,260 INFO L268 CegarLoopResult]: For program point L27-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:10:27,260 INFO L268 CegarLoopResult]: For program point L523(lines 523 572) no Hoare annotation was computed. [2020-07-21 23:10:27,260 INFO L268 CegarLoopResult]: For program point L193(line 193) no Hoare annotation was computed. [2020-07-21 23:10:27,260 INFO L268 CegarLoopResult]: For program point L160(line 160) no Hoare annotation was computed. [2020-07-21 23:10:27,261 INFO L268 CegarLoopResult]: For program point L127(line 127) no Hoare annotation was computed. [2020-07-21 23:10:27,261 INFO L268 CegarLoopResult]: For program point L94(line 94) no Hoare annotation was computed. [2020-07-21 23:10:27,261 INFO L268 CegarLoopResult]: For program point L61(line 61) no Hoare annotation was computed. [2020-07-21 23:10:27,261 INFO L268 CegarLoopResult]: For program point L28(line 28) no Hoare annotation was computed. [2020-07-21 23:10:27,261 INFO L268 CegarLoopResult]: For program point L557(lines 557 572) no Hoare annotation was computed. [2020-07-21 23:10:27,261 INFO L268 CegarLoopResult]: For program point L425(lines 425 572) no Hoare annotation was computed. [2020-07-21 23:10:27,261 INFO L268 CegarLoopResult]: For program point L326(lines 326 572) no Hoare annotation was computed. [2020-07-21 23:10:27,261 INFO L268 CegarLoopResult]: For program point L260(lines 260 572) no Hoare annotation was computed. [2020-07-21 23:10:27,261 INFO L268 CegarLoopResult]: For program point L393(lines 393 572) no Hoare annotation was computed. [2020-07-21 23:10:27,261 INFO L268 CegarLoopResult]: For program point L360(lines 360 572) no Hoare annotation was computed. [2020-07-21 23:10:27,262 INFO L268 CegarLoopResult]: For program point L195-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:10:27,262 INFO L268 CegarLoopResult]: For program point L162-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:10:27,262 INFO L268 CegarLoopResult]: For program point L129-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:10:27,262 INFO L268 CegarLoopResult]: For program point L96-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:10:27,262 INFO L268 CegarLoopResult]: For program point L63-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:10:27,262 INFO L268 CegarLoopResult]: For program point L30-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:10:27,262 INFO L268 CegarLoopResult]: For program point L526(lines 526 572) no Hoare annotation was computed. [2020-07-21 23:10:27,262 INFO L268 CegarLoopResult]: For program point L493(lines 493 572) no Hoare annotation was computed. [2020-07-21 23:10:27,262 INFO L268 CegarLoopResult]: For program point L460(lines 460 572) no Hoare annotation was computed. [2020-07-21 23:10:27,263 INFO L268 CegarLoopResult]: For program point L196(line 196) no Hoare annotation was computed. [2020-07-21 23:10:27,263 INFO L268 CegarLoopResult]: For program point L163(line 163) no Hoare annotation was computed. [2020-07-21 23:10:27,263 INFO L268 CegarLoopResult]: For program point L130(line 130) no Hoare annotation was computed. [2020-07-21 23:10:27,263 INFO L268 CegarLoopResult]: For program point L97(line 97) no Hoare annotation was computed. [2020-07-21 23:10:27,263 INFO L268 CegarLoopResult]: For program point L64(line 64) no Hoare annotation was computed. [2020-07-21 23:10:27,263 INFO L268 CegarLoopResult]: For program point L31(line 31) no Hoare annotation was computed. [2020-07-21 23:10:27,263 INFO L268 CegarLoopResult]: For program point L329(lines 329 572) no Hoare annotation was computed. [2020-07-21 23:10:27,263 INFO L268 CegarLoopResult]: For program point L296(lines 296 572) no Hoare annotation was computed. [2020-07-21 23:10:27,263 INFO L268 CegarLoopResult]: For program point L231(lines 231 572) no Hoare annotation was computed. [2020-07-21 23:10:27,263 INFO L268 CegarLoopResult]: For program point L198-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:10:27,263 INFO L268 CegarLoopResult]: For program point L165-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:10:27,264 INFO L268 CegarLoopResult]: For program point L132-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:10:27,264 INFO L268 CegarLoopResult]: For program point L99-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:10:27,264 INFO L268 CegarLoopResult]: For program point L66-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:10:27,264 INFO L268 CegarLoopResult]: For program point L33-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:10:27,264 INFO L268 CegarLoopResult]: For program point L529(lines 529 572) no Hoare annotation was computed. [2020-07-21 23:10:27,264 INFO L268 CegarLoopResult]: For program point L430(lines 430 572) no Hoare annotation was computed. [2020-07-21 23:10:27,264 INFO L268 CegarLoopResult]: For program point L265(lines 265 572) no Hoare annotation was computed. [2020-07-21 23:10:27,264 INFO L268 CegarLoopResult]: For program point L199(line 199) no Hoare annotation was computed. [2020-07-21 23:10:27,264 INFO L268 CegarLoopResult]: For program point L166(line 166) no Hoare annotation was computed. [2020-07-21 23:10:27,264 INFO L268 CegarLoopResult]: For program point L133(line 133) no Hoare annotation was computed. [2020-07-21 23:10:27,265 INFO L268 CegarLoopResult]: For program point L100(line 100) no Hoare annotation was computed. [2020-07-21 23:10:27,265 INFO L268 CegarLoopResult]: For program point L67(line 67) no Hoare annotation was computed. [2020-07-21 23:10:27,265 INFO L268 CegarLoopResult]: For program point L34(line 34) no Hoare annotation was computed. [2020-07-21 23:10:27,265 INFO L268 CegarLoopResult]: For program point L563(lines 563 572) no Hoare annotation was computed. [2020-07-21 23:10:27,265 INFO L268 CegarLoopResult]: For program point L398(lines 398 572) no Hoare annotation was computed. [2020-07-21 23:10:27,265 INFO L268 CegarLoopResult]: For program point L365(lines 365 572) no Hoare annotation was computed. [2020-07-21 23:10:27,265 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-21 23:10:27,265 INFO L264 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: (and (<= ~a10~0 0) (= 14 ~a4~0) (<= ~a19~0 9) (<= 9 ~a19~0) (= 0 ~a12~0) (= 23 ~a1~0)) [2020-07-21 23:10:27,266 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-21 23:10:27,266 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-21 23:10:27,266 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 576 592) the Hoare annotation is: (or (not (= 23 |old(~a1~0)|)) (not (<= |old(~a10~0)| 0)) (not (= 0 ~a12~0)) (not (<= 9 |old(~a19~0)|)) (not (= 14 ~a4~0)) (and (<= |old(~a19~0)| ~a19~0) (<= ~a10~0 |old(~a10~0)|) (<= |old(~a10~0)| ~a10~0) (<= ~a19~0 |old(~a19~0)|) (= ~a1~0 |old(~a1~0)|)) (not (<= |old(~a19~0)| 9))) [2020-07-21 23:10:27,266 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 576 592) no Hoare annotation was computed. [2020-07-21 23:10:27,266 INFO L264 CegarLoopResult]: At program point L590(line 590) the Hoare annotation is: (let ((.cse1 (<= ~a19~0 9)) (.cse0 (or (< ~a10~0 2) (< ~a1~0 39)))) (or (and (exists ((v_prenex_11 Int)) (and (<= (+ (mod (+ v_prenex_11 36) 89) 110) ~a1~0) (<= 23 v_prenex_11) (<= 0 (+ v_prenex_11 345534)))) (< 0 ~a10~0) .cse0) (not (<= |old(~a10~0)| 0)) (not (= 23 |old(~a1~0)|)) (not (= 0 ~a12~0)) (not (<= 9 |old(~a19~0)|)) (and (<= ~a10~0 0) .cse1) (not (= 14 ~a4~0)) (not (<= |old(~a19~0)| 9)) (and .cse1 (<= 2 ~a10~0)) (<= ~a19~0 7) (and (<= 9 ~a19~0) .cse0 (<= ~a10~0 2) (< (div (+ ~a1~0 (- 227431)) 5) 39)))) [2020-07-21 23:10:27,266 INFO L268 CegarLoopResult]: For program point L590-1(line 590) no Hoare annotation was computed. [2020-07-21 23:10:27,266 INFO L268 CegarLoopResult]: For program point L587(line 587) no Hoare annotation was computed. [2020-07-21 23:10:27,267 INFO L264 CegarLoopResult]: At program point L582-2(lines 582 591) the Hoare annotation is: (let ((.cse1 (<= ~a19~0 9)) (.cse0 (or (< ~a10~0 2) (< ~a1~0 39)))) (or (and (exists ((v_prenex_11 Int)) (and (<= (+ (mod (+ v_prenex_11 36) 89) 110) ~a1~0) (<= 23 v_prenex_11) (<= 0 (+ v_prenex_11 345534)))) (< 0 ~a10~0) .cse0) (not (<= |old(~a10~0)| 0)) (not (= 23 |old(~a1~0)|)) (not (= 0 ~a12~0)) (not (<= 9 |old(~a19~0)|)) (and (<= ~a10~0 0) .cse1) (not (= 14 ~a4~0)) (not (<= |old(~a19~0)| 9)) (and .cse1 (<= 2 ~a10~0)) (<= ~a19~0 7) (and (<= 9 ~a19~0) .cse0 (<= ~a10~0 2) (< (div (+ ~a1~0 (- 227431)) 5) 39)))) [2020-07-21 23:10:27,267 INFO L268 CegarLoopResult]: For program point L582-3(lines 576 592) no Hoare annotation was computed. [2020-07-21 23:10:27,278 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_11,QUANTIFIED] [2020-07-21 23:10:27,279 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_11,QUANTIFIED] [2020-07-21 23:10:27,279 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_11,QUANTIFIED] [2020-07-21 23:10:27,288 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_11,QUANTIFIED] [2020-07-21 23:10:27,289 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_11,QUANTIFIED] [2020-07-21 23:10:27,289 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_11,QUANTIFIED] [2020-07-21 23:10:27,292 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 11:10:27 BoogieIcfgContainer [2020-07-21 23:10:27,292 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 23:10:27,294 INFO L168 Benchmark]: Toolchain (without parser) took 601450.58 ms. Allocated memory was 146.8 MB in the beginning and 612.4 MB in the end (delta: 465.6 MB). Free memory was 101.7 MB in the beginning and 554.8 MB in the end (delta: -453.1 MB). Peak memory consumption was 507.9 MB. Max. memory is 7.1 GB. [2020-07-21 23:10:27,294 INFO L168 Benchmark]: CDTParser took 0.59 ms. Allocated memory is still 146.8 MB. Free memory is still 121.3 MB. There was no memory consumed. Max. memory is 7.1 GB. [2020-07-21 23:10:27,295 INFO L168 Benchmark]: CACSL2BoogieTranslator took 840.91 ms. Allocated memory was 146.8 MB in the beginning and 206.6 MB in the end (delta: 59.8 MB). Free memory was 101.3 MB in the beginning and 172.2 MB in the end (delta: -70.9 MB). Peak memory consumption was 30.4 MB. Max. memory is 7.1 GB. [2020-07-21 23:10:27,296 INFO L168 Benchmark]: Boogie Preprocessor took 115.80 ms. Allocated memory is still 206.6 MB. Free memory was 172.2 MB in the beginning and 167.3 MB in the end (delta: 4.9 MB). Peak memory consumption was 4.9 MB. Max. memory is 7.1 GB. [2020-07-21 23:10:27,297 INFO L168 Benchmark]: RCFGBuilder took 1633.68 ms. Allocated memory was 206.6 MB in the beginning and 235.4 MB in the end (delta: 28.8 MB). Free memory was 167.3 MB in the beginning and 176.3 MB in the end (delta: -9.1 MB). Peak memory consumption was 79.0 MB. Max. memory is 7.1 GB. [2020-07-21 23:10:27,297 INFO L168 Benchmark]: TraceAbstraction took 598853.91 ms. Allocated memory was 235.4 MB in the beginning and 612.4 MB in the end (delta: 377.0 MB). Free memory was 176.3 MB in the beginning and 554.8 MB in the end (delta: -378.5 MB). Peak memory consumption was 493.9 MB. Max. memory is 7.1 GB. [2020-07-21 23:10:27,300 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.59 ms. Allocated memory is still 146.8 MB. Free memory is still 121.3 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 840.91 ms. Allocated memory was 146.8 MB in the beginning and 206.6 MB in the end (delta: 59.8 MB). Free memory was 101.3 MB in the beginning and 172.2 MB in the end (delta: -70.9 MB). Peak memory consumption was 30.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 115.80 ms. Allocated memory is still 206.6 MB. Free memory was 172.2 MB in the beginning and 167.3 MB in the end (delta: 4.9 MB). Peak memory consumption was 4.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1633.68 ms. Allocated memory was 206.6 MB in the beginning and 235.4 MB in the end (delta: 28.8 MB). Free memory was 167.3 MB in the beginning and 176.3 MB in the end (delta: -9.1 MB). Peak memory consumption was 79.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 598853.91 ms. Allocated memory was 235.4 MB in the beginning and 612.4 MB in the end (delta: 377.0 MB). Free memory was 176.3 MB in the beginning and 554.8 MB in the end (delta: -378.5 MB). Peak memory consumption was 493.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_11,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_11,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_11,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_11,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_11,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_11,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 175]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 582]: Loop Invariant [2020-07-21 23:10:27,307 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_11,QUANTIFIED] [2020-07-21 23:10:27,307 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_11,QUANTIFIED] [2020-07-21 23:10:27,307 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_11,QUANTIFIED] [2020-07-21 23:10:27,308 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_11,QUANTIFIED] [2020-07-21 23:10:27,308 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_11,QUANTIFIED] [2020-07-21 23:10:27,309 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_11,QUANTIFIED] Derived loop invariant: ((((((((((((\exists v_prenex_11 : int :: ((v_prenex_11 + 36) % 89 + 110 <= a1 && 23 <= v_prenex_11) && 0 <= v_prenex_11 + 345534) && 0 < a10) && (a10 < 2 || a1 < 39)) || !(\old(a10) <= 0)) || !(23 == \old(a1))) || !(0 == a12)) || !(9 <= \old(a19))) || (a10 <= 0 && a19 <= 9)) || !(14 == a4)) || !(\old(a19) <= 9)) || (a19 <= 9 && 2 <= a10)) || a19 <= 7) || (((9 <= a19 && (a10 < 2 || a1 < 39)) && a10 <= 2) && (a1 + -227431) / 5 < 39) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 215 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 578.5s, OverallIterations: 13, TraceHistogramMax: 5, AutomataDifference: 498.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 20.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 711 SDtfs, 7336 SDslu, 719 SDs, 0 SdLazy, 16097 SolverSat, 2771 SolverUnsat, 170 SolverUnknown, 0 SolverNotchecked, 416.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6089 GetRequests, 5905 SyntacticMatches, 18 SemanticMatches, 166 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 711 ImplicationChecksByTransitivity, 129.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4331occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.0s AutomataMinimizationTime, 13 MinimizatonAttempts, 2004 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 232 PreInvPairs, 328 NumberOfFragments, 457 HoareAnnotationTreeSize, 232 FomulaSimplifications, 26948 FormulaSimplificationTreeSizeReduction, 1.7s HoareSimplificationTime, 7 FomulaSimplificationsInter, 33192 FormulaSimplificationTreeSizeReductionInter, 18.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.6s SatisfiabilityAnalysisTime, 73.7s InterpolantComputationTime, 3448 NumberOfCodeBlocks, 2849 NumberOfCodeBlocksAsserted, 43 NumberOfCheckSat, 5637 ConstructedInterpolants, 35 QuantifiedInterpolants, 8357708 SizeOfPredicates, 29 NumberOfNonLiveVariables, 4987 ConjunctsInSsa, 147 ConjunctsInUnsatCore, 20 InterpolantComputations, 5 PerfectInterpolantSequences, 6128/6904 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...