/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic NUM_VARIABLES --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 2 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label00.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 16:31:13,520 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 16:31:13,523 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 16:31:13,542 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 16:31:13,542 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 16:31:13,544 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 16:31:13,546 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 16:31:13,559 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 16:31:13,561 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 16:31:13,563 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 16:31:13,564 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 16:31:13,566 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 16:31:13,566 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 16:31:13,569 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 16:31:13,572 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 16:31:13,574 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 16:31:13,575 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 16:31:13,576 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 16:31:13,578 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 16:31:13,584 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 16:31:13,585 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 16:31:13,589 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 16:31:13,591 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 16:31:13,592 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 16:31:13,596 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 16:31:13,610 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 16:31:13,610 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 16:31:13,612 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 16:31:13,613 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 16:31:13,635 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 16:31:13,635 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 16:31:13,637 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 16:31:13,637 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 16:31:13,637 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 16:31:13,637 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 16:31:13,637 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 16:31:13,638 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 16:31:13,638 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 16:31:13,638 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 16:31:13,638 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 16:31:13,638 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 16:31:13,639 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 16:31:13,639 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 16:31:13,639 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 16:31:13,639 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 16:31:13,639 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 16:31:13,640 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 16:31:13,640 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 16:31:13,640 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 16:31:13,640 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 16:31:13,640 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 16:31:13,641 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 16:31:13,641 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 16:31:13,641 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 16:31:13,641 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 16:31:13,641 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:31:13,642 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 16:31:13,642 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 16:31:13,642 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> SMT_FEATURE_HEURISTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> NUM_VARIABLES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 2 [2020-07-21 16:31:13,919 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 16:31:13,939 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 16:31:13,943 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 16:31:13,946 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 16:31:13,947 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 16:31:13,947 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label00.c [2020-07-21 16:31:14,029 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c42117312/60c53d6bcf7b4feebb0068e51056c14f/FLAG053b0ece9 [2020-07-21 16:31:14,618 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 16:31:14,618 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem01_label00.c [2020-07-21 16:31:14,630 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c42117312/60c53d6bcf7b4feebb0068e51056c14f/FLAG053b0ece9 [2020-07-21 16:31:14,855 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c42117312/60c53d6bcf7b4feebb0068e51056c14f [2020-07-21 16:31:14,864 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 16:31:14,867 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 16:31:14,868 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 16:31:14,868 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 16:31:14,872 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 16:31:14,873 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 04:31:14" (1/1) ... [2020-07-21 16:31:14,876 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19b4746a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:31:14, skipping insertion in model container [2020-07-21 16:31:14,876 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 04:31:14" (1/1) ... [2020-07-21 16:31:14,884 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 16:31:14,936 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 16:31:15,376 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 16:31:15,391 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 16:31:15,613 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 16:31:15,635 INFO L208 MainTranslator]: Completed translation [2020-07-21 16:31:15,635 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:31:15 WrapperNode [2020-07-21 16:31:15,635 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 16:31:15,636 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 16:31:15,636 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 16:31:15,636 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 16:31:15,646 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:31:15" (1/1) ... [2020-07-21 16:31:15,646 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:31:15" (1/1) ... [2020-07-21 16:31:15,665 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:31:15" (1/1) ... [2020-07-21 16:31:15,665 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:31:15" (1/1) ... [2020-07-21 16:31:15,708 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:31:15" (1/1) ... [2020-07-21 16:31:15,723 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:31:15" (1/1) ... [2020-07-21 16:31:15,730 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:31:15" (1/1) ... [2020-07-21 16:31:15,739 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 16:31:15,740 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 16:31:15,740 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 16:31:15,740 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 16:31:15,741 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:31:15" (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 16:31:15,819 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 16:31:15,820 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 16:31:15,820 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-07-21 16:31:15,820 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 16:31:15,821 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-07-21 16:31:15,821 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 16:31:15,821 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 16:31:15,821 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-21 16:31:15,822 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 16:31:15,822 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 16:31:15,823 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 16:31:17,008 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 16:31:17,008 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-21 16:31:17,014 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 04:31:17 BoogieIcfgContainer [2020-07-21 16:31:17,014 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 16:31:17,015 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 16:31:17,016 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 16:31:17,019 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 16:31:17,019 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 04:31:14" (1/3) ... [2020-07-21 16:31:17,020 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f73f6df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 04:31:17, skipping insertion in model container [2020-07-21 16:31:17,020 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:31:15" (2/3) ... [2020-07-21 16:31:17,021 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f73f6df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 04:31:17, skipping insertion in model container [2020-07-21 16:31:17,021 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 04:31:17" (3/3) ... [2020-07-21 16:31:17,023 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label00.c [2020-07-21 16:31:17,034 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 16:31:17,043 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 16:31:17,059 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 16:31:17,086 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 16:31:17,086 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 16:31:17,086 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 16:31:17,086 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 16:31:17,087 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 16:31:17,087 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 16:31:17,087 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 16:31:17,087 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 16:31:17,112 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states. [2020-07-21 16:31:17,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-07-21 16:31:17,125 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 16:31:17,127 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 16:31:17,127 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 16:31:17,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 16:31:17,134 INFO L82 PathProgramCache]: Analyzing trace with hash -1845535338, now seen corresponding path program 1 times [2020-07-21 16:31:17,144 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 16:31:17,145 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [529219792] [2020-07-21 16:31:17,146 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 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 16:31:17,375 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 16:31:17,376 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 16:31:17,379 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-21 16:31:17,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 16:31:17,491 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 16:31:17,492 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 16:31:17,493 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [529219792] [2020-07-21 16:31:17,494 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 16:31:17,494 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 16:31:17,495 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124456194] [2020-07-21 16:31:17,501 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 16:31:17,501 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 16:31:17,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 16:31:17,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 16:31:17,519 INFO L87 Difference]: Start difference. First operand 207 states. Second operand 3 states. [2020-07-21 16:31:18,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 16:31:18,425 INFO L93 Difference]: Finished difference Result 572 states and 963 transitions. [2020-07-21 16:31:18,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 16:31:18,427 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 114 [2020-07-21 16:31:18,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 16:31:18,455 INFO L225 Difference]: With dead ends: 572 [2020-07-21 16:31:18,456 INFO L226 Difference]: Without dead ends: 278 [2020-07-21 16:31:18,462 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 112 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 16:31:18,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2020-07-21 16:31:18,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 278. [2020-07-21 16:31:18,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 278 states. [2020-07-21 16:31:18,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 394 transitions. [2020-07-21 16:31:18,539 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 394 transitions. Word has length 114 [2020-07-21 16:31:18,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 16:31:18,540 INFO L479 AbstractCegarLoop]: Abstraction has 278 states and 394 transitions. [2020-07-21 16:31:18,540 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 16:31:18,540 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 394 transitions. [2020-07-21 16:31:18,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-07-21 16:31:18,544 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 16:31:18,544 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:31:18,758 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:31:18,758 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 16:31:18,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 16:31:18,759 INFO L82 PathProgramCache]: Analyzing trace with hash -457589907, now seen corresponding path program 1 times [2020-07-21 16:31:18,760 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 16:31:18,760 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1253250411] [2020-07-21 16:31:18,761 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 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 16:31:18,926 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 16:31:18,927 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 16:31:18,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 16:31:18,941 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 16:31:19,011 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 16:31:19,011 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 16:31:19,011 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1253250411] [2020-07-21 16:31:19,012 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 16:31:19,012 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 16:31:19,012 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526481255] [2020-07-21 16:31:19,014 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 16:31:19,015 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 16:31:19,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 16:31:19,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 16:31:19,016 INFO L87 Difference]: Start difference. First operand 278 states and 394 transitions. Second operand 3 states. [2020-07-21 16:31:19,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 16:31:19,591 INFO L93 Difference]: Finished difference Result 820 states and 1181 transitions. [2020-07-21 16:31:19,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 16:31:19,592 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 124 [2020-07-21 16:31:19,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 16:31:19,604 INFO L225 Difference]: With dead ends: 820 [2020-07-21 16:31:19,605 INFO L226 Difference]: Without dead ends: 548 [2020-07-21 16:31:19,607 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 122 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 16:31:19,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2020-07-21 16:31:19,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 548. [2020-07-21 16:31:19,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 548 states. [2020-07-21 16:31:19,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 548 states to 548 states and 734 transitions. [2020-07-21 16:31:19,674 INFO L78 Accepts]: Start accepts. Automaton has 548 states and 734 transitions. Word has length 124 [2020-07-21 16:31:19,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 16:31:19,675 INFO L479 AbstractCegarLoop]: Abstraction has 548 states and 734 transitions. [2020-07-21 16:31:19,675 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 16:31:19,675 INFO L276 IsEmpty]: Start isEmpty. Operand 548 states and 734 transitions. [2020-07-21 16:31:19,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-07-21 16:31:19,683 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 16:31:19,686 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:31:19,887 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:31:19,888 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 16:31:19,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 16:31:19,889 INFO L82 PathProgramCache]: Analyzing trace with hash 1583976871, now seen corresponding path program 1 times [2020-07-21 16:31:19,889 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 16:31:19,890 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1629007305] [2020-07-21 16:31:19,891 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 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 16:31:20,011 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 16:31:20,012 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 16:31:20,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 16:31:20,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 16:31:20,082 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 16:31:20,082 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 16:31:20,083 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1629007305] [2020-07-21 16:31:20,083 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 16:31:20,083 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 16:31:20,084 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258968523] [2020-07-21 16:31:20,084 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 16:31:20,084 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 16:31:20,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 16:31:20,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 16:31:20,085 INFO L87 Difference]: Start difference. First operand 548 states and 734 transitions. Second operand 3 states. [2020-07-21 16:31:20,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 16:31:20,683 INFO L93 Difference]: Finished difference Result 1360 states and 1853 transitions. [2020-07-21 16:31:20,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 16:31:20,685 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 129 [2020-07-21 16:31:20,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 16:31:20,693 INFO L225 Difference]: With dead ends: 1360 [2020-07-21 16:31:20,693 INFO L226 Difference]: Without dead ends: 818 [2020-07-21 16:31:20,695 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 127 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 16:31:20,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 818 states. [2020-07-21 16:31:20,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 818 to 818. [2020-07-21 16:31:20,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 818 states. [2020-07-21 16:31:20,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 818 states to 818 states and 1060 transitions. [2020-07-21 16:31:20,727 INFO L78 Accepts]: Start accepts. Automaton has 818 states and 1060 transitions. Word has length 129 [2020-07-21 16:31:20,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 16:31:20,728 INFO L479 AbstractCegarLoop]: Abstraction has 818 states and 1060 transitions. [2020-07-21 16:31:20,728 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 16:31:20,728 INFO L276 IsEmpty]: Start isEmpty. Operand 818 states and 1060 transitions. [2020-07-21 16:31:20,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-07-21 16:31:20,731 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 16:31:20,731 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:31:20,944 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:31:20,945 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 16:31:20,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 16:31:20,946 INFO L82 PathProgramCache]: Analyzing trace with hash -924358024, now seen corresponding path program 1 times [2020-07-21 16:31:20,947 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 16:31:20,947 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [739253663] [2020-07-21 16:31:20,948 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 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 16:31:21,063 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 16:31:21,063 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 16:31:21,065 INFO L263 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 16:31:21,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 16:31:21,144 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 28 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 16:31:21,144 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 16:31:21,250 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 28 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 16:31:21,250 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [739253663] [2020-07-21 16:31:21,251 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 16:31:21,251 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2020-07-21 16:31:21,251 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581138752] [2020-07-21 16:31:21,253 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-21 16:31:21,254 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 16:31:21,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-21 16:31:21,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-07-21 16:31:21,255 INFO L87 Difference]: Start difference. First operand 818 states and 1060 transitions. Second operand 8 states. [2020-07-21 16:31:23,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 16:31:23,126 INFO L93 Difference]: Finished difference Result 3084 states and 4287 transitions. [2020-07-21 16:31:23,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-21 16:31:23,126 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 140 [2020-07-21 16:31:23,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 16:31:23,143 INFO L225 Difference]: With dead ends: 3084 [2020-07-21 16:31:23,144 INFO L226 Difference]: Without dead ends: 2272 [2020-07-21 16:31:23,147 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 277 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2020-07-21 16:31:23,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2272 states. [2020-07-21 16:31:23,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2272 to 2065. [2020-07-21 16:31:23,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2065 states. [2020-07-21 16:31:23,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2065 states to 2065 states and 2574 transitions. [2020-07-21 16:31:23,232 INFO L78 Accepts]: Start accepts. Automaton has 2065 states and 2574 transitions. Word has length 140 [2020-07-21 16:31:23,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 16:31:23,232 INFO L479 AbstractCegarLoop]: Abstraction has 2065 states and 2574 transitions. [2020-07-21 16:31:23,232 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-21 16:31:23,232 INFO L276 IsEmpty]: Start isEmpty. Operand 2065 states and 2574 transitions. [2020-07-21 16:31:23,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-07-21 16:31:23,239 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 16:31:23,240 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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, 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 16:31:23,454 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:31:23,455 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 16:31:23,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 16:31:23,456 INFO L82 PathProgramCache]: Analyzing trace with hash -1522570016, now seen corresponding path program 1 times [2020-07-21 16:31:23,456 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 16:31:23,456 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [334193820] [2020-07-21 16:31:23,456 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 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 16:31:23,588 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 16:31:23,589 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 16:31:23,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 16:31:23,594 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 16:31:23,665 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-07-21 16:31:23,666 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 16:31:23,666 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [334193820] [2020-07-21 16:31:23,666 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 16:31:23,666 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 16:31:23,668 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969382139] [2020-07-21 16:31:23,668 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 16:31:23,669 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 16:31:23,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 16:31:23,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 16:31:23,670 INFO L87 Difference]: Start difference. First operand 2065 states and 2574 transitions. Second operand 3 states. [2020-07-21 16:31:24,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 16:31:24,302 INFO L93 Difference]: Finished difference Result 5617 states and 7130 transitions. [2020-07-21 16:31:24,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 16:31:24,303 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 147 [2020-07-21 16:31:24,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 16:31:24,330 INFO L225 Difference]: With dead ends: 5617 [2020-07-21 16:31:24,330 INFO L226 Difference]: Without dead ends: 3562 [2020-07-21 16:31:24,338 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 145 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 16:31:24,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3562 states. [2020-07-21 16:31:24,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3562 to 2752. [2020-07-21 16:31:24,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2752 states. [2020-07-21 16:31:24,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2752 states to 2752 states and 3489 transitions. [2020-07-21 16:31:24,448 INFO L78 Accepts]: Start accepts. Automaton has 2752 states and 3489 transitions. Word has length 147 [2020-07-21 16:31:24,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 16:31:24,449 INFO L479 AbstractCegarLoop]: Abstraction has 2752 states and 3489 transitions. [2020-07-21 16:31:24,450 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 16:31:24,450 INFO L276 IsEmpty]: Start isEmpty. Operand 2752 states and 3489 transitions. [2020-07-21 16:31:24,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-07-21 16:31:24,464 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 16:31:24,464 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:31:24,677 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:31:24,678 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 16:31:24,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 16:31:24,679 INFO L82 PathProgramCache]: Analyzing trace with hash -2145339801, now seen corresponding path program 1 times [2020-07-21 16:31:24,679 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 16:31:24,680 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1272683060] [2020-07-21 16:31:24,680 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 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 16:31:24,806 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 16:31:24,806 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 16:31:24,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 510 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-21 16:31:24,812 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 16:31:24,891 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 55 proven. 12 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-07-21 16:31:24,892 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 16:31:24,969 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 65 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-07-21 16:31:24,970 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1272683060] [2020-07-21 16:31:24,970 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 16:31:24,970 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2020-07-21 16:31:24,970 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204541901] [2020-07-21 16:31:24,971 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 16:31:24,971 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 16:31:24,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 16:31:24,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-21 16:31:24,972 INFO L87 Difference]: Start difference. First operand 2752 states and 3489 transitions. Second operand 5 states. [2020-07-21 16:31:25,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 16:31:25,781 INFO L93 Difference]: Finished difference Result 8060 states and 10713 transitions. [2020-07-21 16:31:25,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-21 16:31:25,783 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 165 [2020-07-21 16:31:25,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 16:31:25,815 INFO L225 Difference]: With dead ends: 8060 [2020-07-21 16:31:25,815 INFO L226 Difference]: Without dead ends: 5318 [2020-07-21 16:31:25,825 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 324 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-07-21 16:31:25,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5318 states. [2020-07-21 16:31:25,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5318 to 4555. [2020-07-21 16:31:25,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4555 states. [2020-07-21 16:31:25,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4555 states to 4555 states and 5822 transitions. [2020-07-21 16:31:25,960 INFO L78 Accepts]: Start accepts. Automaton has 4555 states and 5822 transitions. Word has length 165 [2020-07-21 16:31:25,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 16:31:25,961 INFO L479 AbstractCegarLoop]: Abstraction has 4555 states and 5822 transitions. [2020-07-21 16:31:25,961 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 16:31:25,961 INFO L276 IsEmpty]: Start isEmpty. Operand 4555 states and 5822 transitions. [2020-07-21 16:31:25,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-07-21 16:31:25,976 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 16:31:25,977 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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, 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 16:31:26,190 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:31:26,191 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 16:31:26,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 16:31:26,192 INFO L82 PathProgramCache]: Analyzing trace with hash 1999183012, now seen corresponding path program 1 times [2020-07-21 16:31:26,192 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 16:31:26,193 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [748544938] [2020-07-21 16:31:26,193 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 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 16:31:26,371 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 16:31:26,372 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 16:31:26,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 579 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 16:31:26,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 16:31:26,414 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 104 proven. 2 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-07-21 16:31:26,415 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 16:31:26,506 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 104 proven. 2 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-07-21 16:31:26,507 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [748544938] [2020-07-21 16:31:26,507 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 16:31:26,507 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-07-21 16:31:26,508 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284091742] [2020-07-21 16:31:26,508 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-21 16:31:26,509 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 16:31:26,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-21 16:31:26,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-07-21 16:31:26,509 INFO L87 Difference]: Start difference. First operand 4555 states and 5822 transitions. Second operand 7 states. [2020-07-21 16:31:27,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 16:31:27,912 INFO L93 Difference]: Finished difference Result 11459 states and 14935 transitions. [2020-07-21 16:31:27,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-21 16:31:27,913 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 184 [2020-07-21 16:31:27,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 16:31:27,945 INFO L225 Difference]: With dead ends: 11459 [2020-07-21 16:31:27,946 INFO L226 Difference]: Without dead ends: 6914 [2020-07-21 16:31:27,959 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 377 GetRequests, 366 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2020-07-21 16:31:27,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6914 states. [2020-07-21 16:31:28,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6914 to 5816. [2020-07-21 16:31:28,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5816 states. [2020-07-21 16:31:28,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5816 states to 5816 states and 7299 transitions. [2020-07-21 16:31:28,100 INFO L78 Accepts]: Start accepts. Automaton has 5816 states and 7299 transitions. Word has length 184 [2020-07-21 16:31:28,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 16:31:28,100 INFO L479 AbstractCegarLoop]: Abstraction has 5816 states and 7299 transitions. [2020-07-21 16:31:28,100 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-21 16:31:28,100 INFO L276 IsEmpty]: Start isEmpty. Operand 5816 states and 7299 transitions. [2020-07-21 16:31:28,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2020-07-21 16:31:28,118 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 16:31:28,118 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 16:31:28,332 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:31:28,333 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 16:31:28,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 16:31:28,333 INFO L82 PathProgramCache]: Analyzing trace with hash -1538144970, now seen corresponding path program 1 times [2020-07-21 16:31:28,334 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 16:31:28,334 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1310342434] [2020-07-21 16:31:28,334 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 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 16:31:28,475 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 16:31:28,476 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 16:31:28,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 613 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 16:31:28,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 16:31:28,532 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 103 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2020-07-21 16:31:28,533 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 16:31:28,533 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1310342434] [2020-07-21 16:31:28,533 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 16:31:28,533 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 16:31:28,534 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439806894] [2020-07-21 16:31:28,534 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 16:31:28,534 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 16:31:28,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 16:31:28,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 16:31:28,535 INFO L87 Difference]: Start difference. First operand 5816 states and 7299 transitions. Second operand 3 states. [2020-07-21 16:31:29,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 16:31:29,130 INFO L93 Difference]: Finished difference Result 10000 states and 12551 transitions. [2020-07-21 16:31:29,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 16:31:29,131 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 220 [2020-07-21 16:31:29,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 16:31:29,131 INFO L225 Difference]: With dead ends: 10000 [2020-07-21 16:31:29,132 INFO L226 Difference]: Without dead ends: 0 [2020-07-21 16:31:29,148 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 218 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 16:31:29,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-21 16:31:29,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-21 16:31:29,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-21 16:31:29,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-21 16:31:29,150 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 220 [2020-07-21 16:31:29,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 16:31:29,150 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-21 16:31:29,150 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 16:31:29,150 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-21 16:31:29,150 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-21 16:31:29,364 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:31:29,368 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-21 16:31:29,774 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 48 [2020-07-21 16:31:29,882 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 48 [2020-07-21 16:31:30,644 WARN L193 SmtUtils]: Spent 716.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 55 [2020-07-21 16:31:30,818 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 27 [2020-07-21 16:31:30,954 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 27 [2020-07-21 16:31:30,959 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-21 16:31:30,959 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (<= ~a8~0 |old(~a8~0)|) (<= ~a20~0 |old(~a20~0)|) (<= |old(~a16~0)| ~a16~0)) [2020-07-21 16:31:30,960 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-21 16:31:30,960 INFO L268 CegarLoopResult]: For program point L333(lines 333 390) no Hoare annotation was computed. [2020-07-21 16:31:30,960 INFO L268 CegarLoopResult]: For program point L102(lines 102 390) no Hoare annotation was computed. [2020-07-21 16:31:30,960 INFO L268 CegarLoopResult]: For program point L565-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 16:31:30,960 INFO L268 CegarLoopResult]: For program point L532-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 16:31:30,960 INFO L268 CegarLoopResult]: For program point L499-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 16:31:30,961 INFO L268 CegarLoopResult]: For program point L466-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 16:31:30,961 INFO L268 CegarLoopResult]: For program point L433-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 16:31:30,961 INFO L268 CegarLoopResult]: For program point L400-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 16:31:30,961 INFO L268 CegarLoopResult]: For program point L268(lines 268 390) no Hoare annotation was computed. [2020-07-21 16:31:30,961 INFO L268 CegarLoopResult]: For program point L136(lines 136 390) no Hoare annotation was computed. [2020-07-21 16:31:30,962 INFO L268 CegarLoopResult]: For program point L566(line 566) no Hoare annotation was computed. [2020-07-21 16:31:30,962 INFO L268 CegarLoopResult]: For program point L533(line 533) no Hoare annotation was computed. [2020-07-21 16:31:30,962 INFO L268 CegarLoopResult]: For program point L500(line 500) no Hoare annotation was computed. [2020-07-21 16:31:30,962 INFO L268 CegarLoopResult]: For program point L467(line 467) no Hoare annotation was computed. [2020-07-21 16:31:30,962 INFO L268 CegarLoopResult]: For program point L434(line 434) no Hoare annotation was computed. [2020-07-21 16:31:30,963 INFO L268 CegarLoopResult]: For program point L401(line 401) no Hoare annotation was computed. [2020-07-21 16:31:30,963 INFO L268 CegarLoopResult]: For program point L203(lines 203 390) no Hoare annotation was computed. [2020-07-21 16:31:30,963 INFO L268 CegarLoopResult]: For program point L72(lines 72 390) no Hoare annotation was computed. [2020-07-21 16:31:30,963 INFO L268 CegarLoopResult]: For program point L568-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 16:31:30,963 INFO L268 CegarLoopResult]: For program point L535-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 16:31:30,963 INFO L268 CegarLoopResult]: For program point L502-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 16:31:30,963 INFO L268 CegarLoopResult]: For program point L469-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 16:31:30,963 INFO L268 CegarLoopResult]: For program point L436-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 16:31:30,964 INFO L268 CegarLoopResult]: For program point L403-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 16:31:30,964 INFO L268 CegarLoopResult]: For program point L337(lines 337 390) no Hoare annotation was computed. [2020-07-21 16:31:30,964 INFO L268 CegarLoopResult]: For program point L238(lines 238 390) no Hoare annotation was computed. [2020-07-21 16:31:30,964 INFO L268 CegarLoopResult]: For program point L569(line 569) no Hoare annotation was computed. [2020-07-21 16:31:30,964 INFO L268 CegarLoopResult]: For program point L536(line 536) no Hoare annotation was computed. [2020-07-21 16:31:30,964 INFO L268 CegarLoopResult]: For program point L503(line 503) no Hoare annotation was computed. [2020-07-21 16:31:30,964 INFO L268 CegarLoopResult]: For program point L470(line 470) no Hoare annotation was computed. [2020-07-21 16:31:30,965 INFO L268 CegarLoopResult]: For program point L437(line 437) no Hoare annotation was computed. [2020-07-21 16:31:30,965 INFO L268 CegarLoopResult]: For program point L404(line 404) no Hoare annotation was computed. [2020-07-21 16:31:30,965 INFO L268 CegarLoopResult]: For program point L173(lines 173 390) no Hoare annotation was computed. [2020-07-21 16:31:30,965 INFO L268 CegarLoopResult]: For program point L140(lines 140 390) no Hoare annotation was computed. [2020-07-21 16:31:30,965 INFO L268 CegarLoopResult]: For program point L372(lines 372 390) no Hoare annotation was computed. [2020-07-21 16:31:30,965 INFO L268 CegarLoopResult]: For program point calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION(line 500) no Hoare annotation was computed. [2020-07-21 16:31:30,965 INFO L268 CegarLoopResult]: For program point L306(lines 306 390) no Hoare annotation was computed. [2020-07-21 16:31:30,965 INFO L268 CegarLoopResult]: For program point L273(lines 273 390) no Hoare annotation was computed. [2020-07-21 16:31:30,965 INFO L268 CegarLoopResult]: For program point L108(lines 108 390) no Hoare annotation was computed. [2020-07-21 16:31:30,966 INFO L268 CegarLoopResult]: For program point L571-1(lines 571 573) no Hoare annotation was computed. [2020-07-21 16:31:30,966 INFO L268 CegarLoopResult]: For program point L538-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 16:31:30,966 INFO L268 CegarLoopResult]: For program point L505-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 16:31:30,966 INFO L268 CegarLoopResult]: For program point L472-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 16:31:30,966 INFO L268 CegarLoopResult]: For program point L439-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 16:31:30,966 INFO L268 CegarLoopResult]: For program point L406-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 16:31:30,966 INFO L268 CegarLoopResult]: For program point L208(lines 208 390) no Hoare annotation was computed. [2020-07-21 16:31:30,966 INFO L268 CegarLoopResult]: For program point L43(lines 43 390) no Hoare annotation was computed. [2020-07-21 16:31:30,966 INFO L268 CegarLoopResult]: For program point L572(line 572) no Hoare annotation was computed. [2020-07-21 16:31:30,966 INFO L268 CegarLoopResult]: For program point L539(line 539) no Hoare annotation was computed. [2020-07-21 16:31:30,967 INFO L268 CegarLoopResult]: For program point L506(line 506) no Hoare annotation was computed. [2020-07-21 16:31:30,967 INFO L268 CegarLoopResult]: For program point L473(line 473) no Hoare annotation was computed. [2020-07-21 16:31:30,967 INFO L268 CegarLoopResult]: For program point L440(line 440) no Hoare annotation was computed. [2020-07-21 16:31:30,967 INFO L268 CegarLoopResult]: For program point L407(line 407) no Hoare annotation was computed. [2020-07-21 16:31:30,967 INFO L268 CegarLoopResult]: For program point L144(lines 144 390) no Hoare annotation was computed. [2020-07-21 16:31:30,967 INFO L268 CegarLoopResult]: For program point L541-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 16:31:30,967 INFO L268 CegarLoopResult]: For program point L508-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 16:31:30,967 INFO L268 CegarLoopResult]: For program point L475-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 16:31:30,967 INFO L268 CegarLoopResult]: For program point L442-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 16:31:30,968 INFO L268 CegarLoopResult]: For program point L409-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 16:31:30,968 INFO L268 CegarLoopResult]: For program point L178(lines 178 390) no Hoare annotation was computed. [2020-07-21 16:31:30,968 INFO L268 CegarLoopResult]: For program point L542(line 542) no Hoare annotation was computed. [2020-07-21 16:31:30,968 INFO L268 CegarLoopResult]: For program point L509(line 509) no Hoare annotation was computed. [2020-07-21 16:31:30,968 INFO L268 CegarLoopResult]: For program point L476(line 476) no Hoare annotation was computed. [2020-07-21 16:31:30,968 INFO L268 CegarLoopResult]: For program point L443(line 443) no Hoare annotation was computed. [2020-07-21 16:31:30,968 INFO L268 CegarLoopResult]: For program point L410(line 410) no Hoare annotation was computed. [2020-07-21 16:31:30,968 INFO L268 CegarLoopResult]: For program point L377(lines 377 390) no Hoare annotation was computed. [2020-07-21 16:31:30,968 INFO L268 CegarLoopResult]: For program point L278(lines 278 390) no Hoare annotation was computed. [2020-07-21 16:31:30,969 INFO L268 CegarLoopResult]: For program point L245(lines 245 390) no Hoare annotation was computed. [2020-07-21 16:31:30,969 INFO L268 CegarLoopResult]: For program point L80(lines 80 390) no Hoare annotation was computed. [2020-07-21 16:31:30,969 INFO L268 CegarLoopResult]: For program point L345(lines 345 390) no Hoare annotation was computed. [2020-07-21 16:31:30,969 INFO L268 CegarLoopResult]: For program point L312(lines 312 390) no Hoare annotation was computed. [2020-07-21 16:31:30,969 INFO L268 CegarLoopResult]: For program point L114(lines 114 390) no Hoare annotation was computed. [2020-07-21 16:31:30,969 INFO L268 CegarLoopResult]: For program point L544-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 16:31:30,969 INFO L268 CegarLoopResult]: For program point L511-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 16:31:30,970 INFO L268 CegarLoopResult]: For program point L478-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 16:31:30,970 INFO L268 CegarLoopResult]: For program point L445-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 16:31:30,970 INFO L268 CegarLoopResult]: For program point L412-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 16:31:30,970 INFO L268 CegarLoopResult]: For program point L214(lines 214 390) no Hoare annotation was computed. [2020-07-21 16:31:30,970 INFO L268 CegarLoopResult]: For program point L148(lines 148 390) no Hoare annotation was computed. [2020-07-21 16:31:30,970 INFO L268 CegarLoopResult]: For program point L49(lines 49 390) no Hoare annotation was computed. [2020-07-21 16:31:30,970 INFO L268 CegarLoopResult]: For program point L545(line 545) no Hoare annotation was computed. [2020-07-21 16:31:30,970 INFO L268 CegarLoopResult]: For program point L512(line 512) no Hoare annotation was computed. [2020-07-21 16:31:30,971 INFO L268 CegarLoopResult]: For program point L479(line 479) no Hoare annotation was computed. [2020-07-21 16:31:30,971 INFO L268 CegarLoopResult]: For program point L446(line 446) no Hoare annotation was computed. [2020-07-21 16:31:30,971 INFO L268 CegarLoopResult]: For program point L413(line 413) no Hoare annotation was computed. [2020-07-21 16:31:30,971 INFO L268 CegarLoopResult]: For program point L84(lines 84 390) no Hoare annotation was computed. [2020-07-21 16:31:30,971 INFO L268 CegarLoopResult]: For program point calculate_outputFINAL(lines 30 575) no Hoare annotation was computed. [2020-07-21 16:31:30,971 INFO L268 CegarLoopResult]: For program point calculate_outputEXIT(lines 30 575) no Hoare annotation was computed. [2020-07-21 16:31:30,971 INFO L268 CegarLoopResult]: For program point L547-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 16:31:30,971 INFO L268 CegarLoopResult]: For program point L514-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 16:31:30,971 INFO L268 CegarLoopResult]: For program point L481-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 16:31:30,971 INFO L268 CegarLoopResult]: For program point L448-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 16:31:30,972 INFO L268 CegarLoopResult]: For program point L382(lines 382 390) no Hoare annotation was computed. [2020-07-21 16:31:30,972 INFO L268 CegarLoopResult]: For program point L415-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 16:31:30,972 INFO L268 CegarLoopResult]: For program point L316(lines 316 390) no Hoare annotation was computed. [2020-07-21 16:31:30,972 INFO L268 CegarLoopResult]: For program point L250(lines 250 390) no Hoare annotation was computed. [2020-07-21 16:31:30,972 INFO L268 CegarLoopResult]: For program point L548(line 548) no Hoare annotation was computed. [2020-07-21 16:31:30,972 INFO L268 CegarLoopResult]: For program point L515(line 515) no Hoare annotation was computed. [2020-07-21 16:31:30,972 INFO L268 CegarLoopResult]: For program point L482(line 482) no Hoare annotation was computed. [2020-07-21 16:31:30,972 INFO L268 CegarLoopResult]: For program point L449(line 449) no Hoare annotation was computed. [2020-07-21 16:31:30,972 INFO L268 CegarLoopResult]: For program point L416(line 416) no Hoare annotation was computed. [2020-07-21 16:31:30,972 INFO L268 CegarLoopResult]: For program point L218(lines 218 390) no Hoare annotation was computed. [2020-07-21 16:31:30,972 INFO L268 CegarLoopResult]: For program point L152(lines 152 390) no Hoare annotation was computed. [2020-07-21 16:31:30,972 INFO L268 CegarLoopResult]: For program point L119(lines 119 390) no Hoare annotation was computed. [2020-07-21 16:31:30,973 INFO L268 CegarLoopResult]: For program point L318(lines 318 390) no Hoare annotation was computed. [2020-07-21 16:31:30,973 INFO L268 CegarLoopResult]: For program point L186(lines 186 390) no Hoare annotation was computed. [2020-07-21 16:31:30,973 INFO L268 CegarLoopResult]: For program point L54(lines 54 390) no Hoare annotation was computed. [2020-07-21 16:31:30,973 INFO L268 CegarLoopResult]: For program point L550-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 16:31:30,973 INFO L268 CegarLoopResult]: For program point L517-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 16:31:30,973 INFO L268 CegarLoopResult]: For program point L484-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 16:31:30,973 INFO L268 CegarLoopResult]: For program point L451-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 16:31:30,973 INFO L268 CegarLoopResult]: For program point L418-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 16:31:30,973 INFO L268 CegarLoopResult]: For program point L286(lines 286 390) no Hoare annotation was computed. [2020-07-21 16:31:30,973 INFO L268 CegarLoopResult]: For program point L551(line 551) no Hoare annotation was computed. [2020-07-21 16:31:30,973 INFO L268 CegarLoopResult]: For program point L518(line 518) no Hoare annotation was computed. [2020-07-21 16:31:30,973 INFO L268 CegarLoopResult]: For program point L485(line 485) no Hoare annotation was computed. [2020-07-21 16:31:30,973 INFO L268 CegarLoopResult]: For program point L452(line 452) no Hoare annotation was computed. [2020-07-21 16:31:30,974 INFO L268 CegarLoopResult]: For program point L419(line 419) no Hoare annotation was computed. [2020-07-21 16:31:30,974 INFO L268 CegarLoopResult]: For program point L353(lines 353 390) no Hoare annotation was computed. [2020-07-21 16:31:30,974 INFO L268 CegarLoopResult]: For program point L189(lines 189 390) no Hoare annotation was computed. [2020-07-21 16:31:30,974 INFO L268 CegarLoopResult]: For program point L553-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 16:31:30,974 INFO L268 CegarLoopResult]: For program point L520-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 16:31:30,974 INFO L268 CegarLoopResult]: For program point L487-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 16:31:30,974 INFO L268 CegarLoopResult]: For program point L454-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 16:31:30,974 INFO L268 CegarLoopResult]: For program point L421-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 16:31:30,974 INFO L268 CegarLoopResult]: For program point L355(lines 355 390) no Hoare annotation was computed. [2020-07-21 16:31:30,974 INFO L268 CegarLoopResult]: For program point L256(lines 256 390) no Hoare annotation was computed. [2020-07-21 16:31:30,974 INFO L268 CegarLoopResult]: For program point L223(lines 223 390) no Hoare annotation was computed. [2020-07-21 16:31:30,975 INFO L268 CegarLoopResult]: For program point L124(lines 124 390) no Hoare annotation was computed. [2020-07-21 16:31:30,975 INFO L268 CegarLoopResult]: For program point L554(line 554) no Hoare annotation was computed. [2020-07-21 16:31:30,975 INFO L268 CegarLoopResult]: For program point L521(line 521) no Hoare annotation was computed. [2020-07-21 16:31:30,975 INFO L268 CegarLoopResult]: For program point L488(line 488) no Hoare annotation was computed. [2020-07-21 16:31:30,975 INFO L268 CegarLoopResult]: For program point L455(line 455) no Hoare annotation was computed. [2020-07-21 16:31:30,975 INFO L268 CegarLoopResult]: For program point L422(line 422) no Hoare annotation was computed. [2020-07-21 16:31:30,975 INFO L268 CegarLoopResult]: For program point L92(lines 92 390) no Hoare annotation was computed. [2020-07-21 16:31:30,975 INFO L264 CegarLoopResult]: At program point calculate_outputENTRY(lines 30 575) the Hoare annotation is: (let ((.cse4 (not (<= |old(~a7~0)| 0))) (.cse0 (not (<= 15 |old(~a8~0)|))) (.cse6 (not (<= |old(~a16~0)| 4))) (.cse7 (<= ~a16~0 4)) (.cse1 (<= ~a8~0 |old(~a8~0)|)) (.cse2 (<= ~a20~0 |old(~a20~0)|)) (.cse3 (<= |old(~a16~0)| ~a16~0)) (.cse5 (not (<= |old(~a8~0)| 13)))) (and (or .cse0 (and .cse1 .cse2 .cse3 (<= 15 ~a8~0))) (or .cse4 (<= ~a7~0 0)) (or (and (or .cse5 .cse6) (not (<= |old(~a17~0)| 0))) (and .cse3 (or (and .cse1 (<= ~a8~0 13) .cse2 .cse7) (and .cse1 .cse2 (<= ~a17~0 0))))) (or (and .cse1 .cse2 .cse3) .cse4) (or .cse0 .cse6 .cse7) (or (and .cse1 .cse2 (<= ~a21~0 0) .cse3) (not (<= |old(~a21~0)| 0)) .cse5))) [2020-07-21 16:31:30,975 INFO L268 CegarLoopResult]: For program point L324(lines 324 390) no Hoare annotation was computed. [2020-07-21 16:31:30,975 INFO L268 CegarLoopResult]: For program point L556-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 16:31:30,975 INFO L268 CegarLoopResult]: For program point L523-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 16:31:30,976 INFO L268 CegarLoopResult]: For program point L490-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 16:31:30,976 INFO L268 CegarLoopResult]: For program point L457-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 16:31:30,976 INFO L268 CegarLoopResult]: For program point L391(lines 391 393) no Hoare annotation was computed. [2020-07-21 16:31:30,976 INFO L268 CegarLoopResult]: For program point L424-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 16:31:30,976 INFO L268 CegarLoopResult]: For program point L391-2(lines 30 575) no Hoare annotation was computed. [2020-07-21 16:31:30,976 INFO L268 CegarLoopResult]: For program point L292(lines 292 390) no Hoare annotation was computed. [2020-07-21 16:31:30,976 INFO L268 CegarLoopResult]: For program point L160(lines 160 390) no Hoare annotation was computed. [2020-07-21 16:31:30,976 INFO L268 CegarLoopResult]: For program point L557(line 557) no Hoare annotation was computed. [2020-07-21 16:31:30,976 INFO L268 CegarLoopResult]: For program point L524(line 524) no Hoare annotation was computed. [2020-07-21 16:31:30,977 INFO L268 CegarLoopResult]: For program point L491(line 491) no Hoare annotation was computed. [2020-07-21 16:31:30,977 INFO L268 CegarLoopResult]: For program point L458(line 458) no Hoare annotation was computed. [2020-07-21 16:31:30,977 INFO L268 CegarLoopResult]: For program point L425(line 425) no Hoare annotation was computed. [2020-07-21 16:31:30,977 INFO L268 CegarLoopResult]: For program point L392(line 392) no Hoare annotation was computed. [2020-07-21 16:31:30,977 INFO L268 CegarLoopResult]: For program point L194(lines 194 390) no Hoare annotation was computed. [2020-07-21 16:31:30,977 INFO L268 CegarLoopResult]: For program point L62(lines 62 390) no Hoare annotation was computed. [2020-07-21 16:31:30,977 INFO L268 CegarLoopResult]: For program point L261(lines 261 390) no Hoare annotation was computed. [2020-07-21 16:31:30,977 INFO L268 CegarLoopResult]: For program point L129(lines 129 390) no Hoare annotation was computed. [2020-07-21 16:31:30,978 INFO L268 CegarLoopResult]: For program point L559-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 16:31:30,978 INFO L268 CegarLoopResult]: For program point L526-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 16:31:30,978 INFO L268 CegarLoopResult]: For program point L493-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 16:31:30,978 INFO L268 CegarLoopResult]: For program point L460-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 16:31:30,978 INFO L268 CegarLoopResult]: For program point L427-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 16:31:30,978 INFO L268 CegarLoopResult]: For program point L361(lines 361 390) no Hoare annotation was computed. [2020-07-21 16:31:30,978 INFO L268 CegarLoopResult]: For program point L394-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 16:31:30,978 INFO L268 CegarLoopResult]: For program point L97(lines 97 390) no Hoare annotation was computed. [2020-07-21 16:31:30,978 INFO L268 CegarLoopResult]: For program point L31(lines 31 390) no Hoare annotation was computed. [2020-07-21 16:31:30,978 INFO L268 CegarLoopResult]: For program point L560(line 560) no Hoare annotation was computed. [2020-07-21 16:31:30,979 INFO L268 CegarLoopResult]: For program point L527(line 527) no Hoare annotation was computed. [2020-07-21 16:31:30,979 INFO L268 CegarLoopResult]: For program point L494(line 494) no Hoare annotation was computed. [2020-07-21 16:31:30,979 INFO L268 CegarLoopResult]: For program point L461(line 461) no Hoare annotation was computed. [2020-07-21 16:31:30,979 INFO L268 CegarLoopResult]: For program point L428(line 428) no Hoare annotation was computed. [2020-07-21 16:31:30,979 INFO L268 CegarLoopResult]: For program point L395(line 395) no Hoare annotation was computed. [2020-07-21 16:31:30,979 INFO L268 CegarLoopResult]: For program point L329(lines 329 390) no Hoare annotation was computed. [2020-07-21 16:31:30,979 INFO L268 CegarLoopResult]: For program point L197(lines 197 390) no Hoare annotation was computed. [2020-07-21 16:31:30,979 INFO L268 CegarLoopResult]: For program point L65(lines 65 390) no Hoare annotation was computed. [2020-07-21 16:31:30,979 INFO L268 CegarLoopResult]: For program point L363(lines 363 390) no Hoare annotation was computed. [2020-07-21 16:31:30,979 INFO L268 CegarLoopResult]: For program point L231(lines 231 390) no Hoare annotation was computed. [2020-07-21 16:31:30,979 INFO L268 CegarLoopResult]: For program point L165(lines 165 390) no Hoare annotation was computed. [2020-07-21 16:31:30,980 INFO L268 CegarLoopResult]: For program point L562-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 16:31:30,980 INFO L268 CegarLoopResult]: For program point L529-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 16:31:30,980 INFO L268 CegarLoopResult]: For program point L496-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 16:31:30,980 INFO L268 CegarLoopResult]: For program point L463-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 16:31:30,980 INFO L268 CegarLoopResult]: For program point L430-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 16:31:30,980 INFO L268 CegarLoopResult]: For program point L397-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 16:31:30,980 INFO L268 CegarLoopResult]: For program point L265(lines 265 390) no Hoare annotation was computed. [2020-07-21 16:31:30,980 INFO L268 CegarLoopResult]: For program point L563(line 563) no Hoare annotation was computed. [2020-07-21 16:31:30,980 INFO L268 CegarLoopResult]: For program point L530(line 530) no Hoare annotation was computed. [2020-07-21 16:31:30,980 INFO L268 CegarLoopResult]: For program point L497(line 497) no Hoare annotation was computed. [2020-07-21 16:31:30,980 INFO L268 CegarLoopResult]: For program point L464(line 464) no Hoare annotation was computed. [2020-07-21 16:31:30,980 INFO L268 CegarLoopResult]: For program point L431(line 431) no Hoare annotation was computed. [2020-07-21 16:31:30,980 INFO L268 CegarLoopResult]: For program point L398(line 398) no Hoare annotation was computed. [2020-07-21 16:31:30,980 INFO L268 CegarLoopResult]: For program point L365(lines 365 390) no Hoare annotation was computed. [2020-07-21 16:31:30,981 INFO L268 CegarLoopResult]: For program point L299(lines 299 390) no Hoare annotation was computed. [2020-07-21 16:31:30,981 INFO L268 CegarLoopResult]: For program point L35(lines 35 390) no Hoare annotation was computed. [2020-07-21 16:31:30,981 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-21 16:31:30,981 INFO L264 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: (and (<= ~a7~0 0) (<= 15 ~a8~0) (< 4 ~a16~0)) [2020-07-21 16:31:30,981 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-21 16:31:30,981 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-21 16:31:30,981 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 577 594) the Hoare annotation is: (or (and (<= ~a8~0 |old(~a8~0)|) (<= ~a20~0 |old(~a20~0)|) (<= |old(~a16~0)| ~a16~0) (<= ~a7~0 0) (<= 15 ~a8~0)) (not (<= 15 |old(~a8~0)|)) (not (<= |old(~a7~0)| 0)) (not (< 4 |old(~a16~0)|))) [2020-07-21 16:31:30,981 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 577 594) no Hoare annotation was computed. [2020-07-21 16:31:30,981 INFO L264 CegarLoopResult]: At program point L591(line 591) the Hoare annotation is: (let ((.cse0 (<= ~a8~0 13))) (or (and .cse0 (<= ~a16~0 4)) (not (<= 15 |old(~a8~0)|)) (<= ~a17~0 0) (not (<= |old(~a7~0)| 0)) (<= ~a7~0 0) (<= 15 ~a8~0) (not (< 4 |old(~a16~0)|)) (and .cse0 (<= ~a21~0 0)))) [2020-07-21 16:31:30,981 INFO L268 CegarLoopResult]: For program point L591-1(line 591) no Hoare annotation was computed. [2020-07-21 16:31:30,981 INFO L268 CegarLoopResult]: For program point L588(line 588) no Hoare annotation was computed. [2020-07-21 16:31:30,981 INFO L264 CegarLoopResult]: At program point L583-2(lines 583 593) the Hoare annotation is: (let ((.cse0 (<= ~a8~0 13))) (or (and .cse0 (<= ~a16~0 4)) (not (<= 15 |old(~a8~0)|)) (<= ~a17~0 0) (not (<= |old(~a7~0)| 0)) (<= ~a7~0 0) (<= 15 ~a8~0) (not (< 4 |old(~a16~0)|)) (and .cse0 (<= ~a21~0 0)))) [2020-07-21 16:31:30,982 INFO L268 CegarLoopResult]: For program point L583-3(lines 577 594) no Hoare annotation was computed. [2020-07-21 16:31:30,997 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 04:31:30 BoogieIcfgContainer [2020-07-21 16:31:30,998 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 16:31:31,000 INFO L168 Benchmark]: Toolchain (without parser) took 16134.02 ms. Allocated memory was 138.4 MB in the beginning and 499.6 MB in the end (delta: 361.2 MB). Free memory was 101.5 MB in the beginning and 406.1 MB in the end (delta: -304.6 MB). Peak memory consumption was 321.6 MB. Max. memory is 7.1 GB. [2020-07-21 16:31:31,000 INFO L168 Benchmark]: CDTParser took 0.50 ms. Allocated memory is still 138.4 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-21 16:31:31,001 INFO L168 Benchmark]: CACSL2BoogieTranslator took 767.37 ms. Allocated memory was 138.4 MB in the beginning and 205.0 MB in the end (delta: 66.6 MB). Free memory was 101.0 MB in the beginning and 171.8 MB in the end (delta: -70.8 MB). Peak memory consumption was 36.9 MB. Max. memory is 7.1 GB. [2020-07-21 16:31:31,002 INFO L168 Benchmark]: Boogie Preprocessor took 103.32 ms. Allocated memory is still 205.0 MB. Free memory was 171.8 MB in the beginning and 166.1 MB in the end (delta: 5.7 MB). Peak memory consumption was 5.7 MB. Max. memory is 7.1 GB. [2020-07-21 16:31:31,003 INFO L168 Benchmark]: RCFGBuilder took 1274.71 ms. Allocated memory was 205.0 MB in the beginning and 238.0 MB in the end (delta: 33.0 MB). Free memory was 166.1 MB in the beginning and 180.7 MB in the end (delta: -14.6 MB). Peak memory consumption was 82.7 MB. Max. memory is 7.1 GB. [2020-07-21 16:31:31,004 INFO L168 Benchmark]: TraceAbstraction took 13982.30 ms. Allocated memory was 238.0 MB in the beginning and 499.6 MB in the end (delta: 261.6 MB). Free memory was 180.7 MB in the beginning and 406.1 MB in the end (delta: -225.4 MB). Peak memory consumption was 301.3 MB. Max. memory is 7.1 GB. [2020-07-21 16:31:31,008 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.50 ms. Allocated memory is still 138.4 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 767.37 ms. Allocated memory was 138.4 MB in the beginning and 205.0 MB in the end (delta: 66.6 MB). Free memory was 101.0 MB in the beginning and 171.8 MB in the end (delta: -70.8 MB). Peak memory consumption was 36.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 103.32 ms. Allocated memory is still 205.0 MB. Free memory was 171.8 MB in the beginning and 166.1 MB in the end (delta: 5.7 MB). Peak memory consumption was 5.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1274.71 ms. Allocated memory was 205.0 MB in the beginning and 238.0 MB in the end (delta: 33.0 MB). Free memory was 166.1 MB in the beginning and 180.7 MB in the end (delta: -14.6 MB). Peak memory consumption was 82.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 13982.30 ms. Allocated memory was 238.0 MB in the beginning and 499.6 MB in the end (delta: 261.6 MB). Free memory was 180.7 MB in the beginning and 406.1 MB in the end (delta: -225.4 MB). Peak memory consumption was 301.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 500]: 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: 583]: Loop Invariant Derived loop invariant: (((((((a8 <= 13 && a16 <= 4) || !(15 <= \old(a8))) || a17 <= 0) || !(\old(a7) <= 0)) || a7 <= 0) || 15 <= a8) || !(4 < \old(a16))) || (a8 <= 13 && a21 <= 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 207 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 12.2s, OverallIterations: 8, TraceHistogramMax: 5, AutomataDifference: 7.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 830 SDtfs, 1936 SDslu, 240 SDs, 0 SdLazy, 5114 SolverSat, 742 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1724 GetRequests, 1691 SyntacticMatches, 4 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5816occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 8 MinimizatonAttempts, 2878 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 160 PreInvPairs, 246 NumberOfFragments, 241 HoareAnnotationTreeSize, 160 FomulaSimplifications, 6722 FormulaSimplificationTreeSizeReduction, 0.5s HoareSimplificationTime, 7 FomulaSimplificationsInter, 2531 FormulaSimplificationTreeSizeReductionInter, 1.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 1223 NumberOfCodeBlocks, 1223 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 1701 ConstructedInterpolants, 0 QuantifiedInterpolants, 561281 SizeOfPredicates, 14 NumberOfNonLiveVariables, 3586 ConjunctsInSsa, 36 ConjunctsInUnsatCore, 11 InterpolantComputations, 5 PerfectInterpolantSequences, 737/759 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...