/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic NUM_FUNCTIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 2 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label19.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 13:46:47,663 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 13:46:47,666 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 13:46:47,679 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 13:46:47,679 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 13:46:47,680 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 13:46:47,681 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 13:46:47,683 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 13:46:47,685 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 13:46:47,686 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 13:46:47,687 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 13:46:47,688 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 13:46:47,688 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 13:46:47,689 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 13:46:47,690 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 13:46:47,691 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 13:46:47,692 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 13:46:47,693 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 13:46:47,695 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 13:46:47,697 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 13:46:47,698 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 13:46:47,699 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 13:46:47,701 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 13:46:47,702 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 13:46:47,704 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 13:46:47,716 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 13:46:47,717 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 13:46:47,720 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 13:46:47,721 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 13:46:47,746 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 13:46:47,746 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 13:46:47,748 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 13:46:47,748 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 13:46:47,749 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 13:46:47,749 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 13:46:47,749 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 13:46:47,749 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 13:46:47,749 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 13:46:47,749 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 13:46:47,750 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 13:46:47,751 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 13:46:47,751 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 13:46:47,751 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 13:46:47,751 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 13:46:47,752 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 13:46:47,752 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 13:46:47,752 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 13:46:47,752 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 13:46:47,753 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 13:46:47,753 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 13:46:47,753 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 13:46:47,754 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 13:46:47,754 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 13:46:47,754 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 13:46:47,754 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 13:46:47,755 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:46:47,755 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 13:46:47,755 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 13:46:47,755 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> SMT_FEATURE_HEURISTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> NUM_FUNCTIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 2 [2020-07-21 13:46:48,100 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 13:46:48,113 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 13:46:48,116 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 13:46:48,118 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 13:46:48,118 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 13:46:48,119 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label19.c [2020-07-21 13:46:48,185 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc7db96b2/37cf839820ed423f88588c4ab902ec4f/FLAGcf31b803b [2020-07-21 13:46:48,762 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 13:46:48,763 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem01_label19.c [2020-07-21 13:46:48,780 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc7db96b2/37cf839820ed423f88588c4ab902ec4f/FLAGcf31b803b [2020-07-21 13:46:48,999 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc7db96b2/37cf839820ed423f88588c4ab902ec4f [2020-07-21 13:46:49,009 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 13:46:49,011 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 13:46:49,013 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 13:46:49,013 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 13:46:49,017 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 13:46:49,018 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 01:46:49" (1/1) ... [2020-07-21 13:46:49,021 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15a3d206 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:46:49, skipping insertion in model container [2020-07-21 13:46:49,022 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 01:46:49" (1/1) ... [2020-07-21 13:46:49,030 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 13:46:49,088 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 13:46:49,642 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 13:46:49,647 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 13:46:49,750 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 13:46:49,767 INFO L208 MainTranslator]: Completed translation [2020-07-21 13:46:49,768 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:46:49 WrapperNode [2020-07-21 13:46:49,768 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 13:46:49,772 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 13:46:49,772 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 13:46:49,772 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 13:46:49,791 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:46:49" (1/1) ... [2020-07-21 13:46:49,793 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:46:49" (1/1) ... [2020-07-21 13:46:49,815 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:46:49" (1/1) ... [2020-07-21 13:46:49,815 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:46:49" (1/1) ... [2020-07-21 13:46:49,855 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:46:49" (1/1) ... [2020-07-21 13:46:49,868 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:46:49" (1/1) ... [2020-07-21 13:46:49,875 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:46:49" (1/1) ... [2020-07-21 13:46:49,889 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 13:46:49,890 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 13:46:49,890 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 13:46:49,890 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 13:46:49,891 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:46:49" (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 13:46:49,956 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 13:46:49,956 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 13:46:49,957 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-07-21 13:46:49,957 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 13:46:49,957 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-07-21 13:46:49,958 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 13:46:49,958 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 13:46:49,958 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-21 13:46:49,959 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 13:46:49,959 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 13:46:49,959 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 13:46:51,077 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 13:46:51,077 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-21 13:46:51,083 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:46:51 BoogieIcfgContainer [2020-07-21 13:46:51,083 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 13:46:51,085 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 13:46:51,085 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 13:46:51,088 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 13:46:51,089 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 01:46:49" (1/3) ... [2020-07-21 13:46:51,089 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35cc1cb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 01:46:51, skipping insertion in model container [2020-07-21 13:46:51,090 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:46:49" (2/3) ... [2020-07-21 13:46:51,090 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35cc1cb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 01:46:51, skipping insertion in model container [2020-07-21 13:46:51,090 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:46:51" (3/3) ... [2020-07-21 13:46:51,092 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label19.c [2020-07-21 13:46:51,103 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 13:46:51,112 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 13:46:51,127 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 13:46:51,154 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 13:46:51,154 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 13:46:51,154 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 13:46:51,155 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 13:46:51,155 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 13:46:51,155 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 13:46:51,155 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 13:46:51,156 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 13:46:51,178 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states. [2020-07-21 13:46:51,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-07-21 13:46:51,189 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 13:46:51,191 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 13:46:51,191 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 13:46:51,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 13:46:51,198 INFO L82 PathProgramCache]: Analyzing trace with hash -940773154, now seen corresponding path program 1 times [2020-07-21 13:46:51,208 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 13:46:51,208 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1039697365] [2020-07-21 13:46:51,209 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 13:46:51,389 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 13:46:51,389 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 13:46:51,392 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-21 13:46:51,402 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 13:46:51,491 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 13:46:51,492 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 13:46:51,493 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1039697365] [2020-07-21 13:46:51,494 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 13:46:51,494 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 13:46:51,495 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113635738] [2020-07-21 13:46:51,501 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 13:46:51,501 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 13:46:51,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 13:46:51,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 13:46:51,519 INFO L87 Difference]: Start difference. First operand 207 states. Second operand 3 states. [2020-07-21 13:46:52,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 13:46:52,381 INFO L93 Difference]: Finished difference Result 572 states and 963 transitions. [2020-07-21 13:46:52,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 13:46:52,383 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 92 [2020-07-21 13:46:52,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 13:46:52,399 INFO L225 Difference]: With dead ends: 572 [2020-07-21 13:46:52,400 INFO L226 Difference]: Without dead ends: 278 [2020-07-21 13:46:52,406 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 90 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 13:46:52,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2020-07-21 13:46:52,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 278. [2020-07-21 13:46:52,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 278 states. [2020-07-21 13:46:52,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 394 transitions. [2020-07-21 13:46:52,477 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 394 transitions. Word has length 92 [2020-07-21 13:46:52,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 13:46:52,478 INFO L479 AbstractCegarLoop]: Abstraction has 278 states and 394 transitions. [2020-07-21 13:46:52,478 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 13:46:52,478 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 394 transitions. [2020-07-21 13:46:52,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-07-21 13:46:52,483 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 13:46:52,484 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] [2020-07-21 13:46:52,694 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:46:52,694 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 13:46:52,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 13:46:52,696 INFO L82 PathProgramCache]: Analyzing trace with hash -999601675, now seen corresponding path program 1 times [2020-07-21 13:46:52,696 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 13:46:52,697 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2110916748] [2020-07-21 13:46:52,697 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 13:46:52,801 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 13:46:52,802 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 13:46:52,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-21 13:46:52,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 13:46:52,869 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 13:46:52,870 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 13:46:52,870 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2110916748] [2020-07-21 13:46:52,870 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 13:46:52,870 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 13:46:52,871 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185625413] [2020-07-21 13:46:52,873 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 13:46:52,873 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 13:46:52,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 13:46:52,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 13:46:52,874 INFO L87 Difference]: Start difference. First operand 278 states and 394 transitions. Second operand 5 states. [2020-07-21 13:46:53,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 13:46:53,796 INFO L93 Difference]: Finished difference Result 842 states and 1218 transitions. [2020-07-21 13:46:53,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 13:46:53,797 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 102 [2020-07-21 13:46:53,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 13:46:53,805 INFO L225 Difference]: With dead ends: 842 [2020-07-21 13:46:53,805 INFO L226 Difference]: Without dead ends: 570 [2020-07-21 13:46:53,827 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-07-21 13:46:53,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2020-07-21 13:46:53,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 556. [2020-07-21 13:46:53,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 556 states. [2020-07-21 13:46:53,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 784 transitions. [2020-07-21 13:46:53,874 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 784 transitions. Word has length 102 [2020-07-21 13:46:53,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 13:46:53,875 INFO L479 AbstractCegarLoop]: Abstraction has 556 states and 784 transitions. [2020-07-21 13:46:53,875 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 13:46:53,875 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 784 transitions. [2020-07-21 13:46:53,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-07-21 13:46:53,880 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 13:46:53,880 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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] [2020-07-21 13:46:54,095 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:46:54,096 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 13:46:54,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 13:46:54,097 INFO L82 PathProgramCache]: Analyzing trace with hash 2115094318, now seen corresponding path program 1 times [2020-07-21 13:46:54,098 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 13:46:54,098 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [391335013] [2020-07-21 13:46:54,099 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 13:46:54,207 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 13:46:54,207 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 13:46:54,209 INFO L263 TraceCheckSpWp]: Trace formula consists of 407 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 13:46:54,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 13:46:54,254 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 33 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 13:46:54,254 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 13:46:54,336 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 33 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 13:46:54,337 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [391335013] [2020-07-21 13:46:54,337 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 13:46:54,337 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2020-07-21 13:46:54,338 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323277804] [2020-07-21 13:46:54,339 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-21 13:46:54,339 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 13:46:54,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-21 13:46:54,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-07-21 13:46:54,340 INFO L87 Difference]: Start difference. First operand 556 states and 784 transitions. Second operand 8 states. [2020-07-21 13:46:56,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 13:46:56,344 INFO L93 Difference]: Finished difference Result 2270 states and 3383 transitions. [2020-07-21 13:46:56,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-21 13:46:56,346 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 122 [2020-07-21 13:46:56,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 13:46:56,362 INFO L225 Difference]: With dead ends: 2270 [2020-07-21 13:46:56,362 INFO L226 Difference]: Without dead ends: 1720 [2020-07-21 13:46:56,366 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 241 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 13:46:56,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1720 states. [2020-07-21 13:46:56,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1720 to 1390. [2020-07-21 13:46:56,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1390 states. [2020-07-21 13:46:56,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1390 states to 1390 states and 1826 transitions. [2020-07-21 13:46:56,450 INFO L78 Accepts]: Start accepts. Automaton has 1390 states and 1826 transitions. Word has length 122 [2020-07-21 13:46:56,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 13:46:56,451 INFO L479 AbstractCegarLoop]: Abstraction has 1390 states and 1826 transitions. [2020-07-21 13:46:56,451 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-21 13:46:56,451 INFO L276 IsEmpty]: Start isEmpty. Operand 1390 states and 1826 transitions. [2020-07-21 13:46:56,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-07-21 13:46:56,458 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 13:46:56,458 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 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] [2020-07-21 13:46:56,672 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:46:56,673 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 13:46:56,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 13:46:56,674 INFO L82 PathProgramCache]: Analyzing trace with hash 207529995, now seen corresponding path program 1 times [2020-07-21 13:46:56,675 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 13:46:56,675 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [114152775] [2020-07-21 13:46:56,675 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 13:46:56,814 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 13:46:56,814 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 13:46:56,816 INFO L263 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 13:46:56,820 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 13:46:56,858 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 63 proven. 2 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-07-21 13:46:56,858 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 13:46:56,963 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 54 proven. 19 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-07-21 13:46:56,963 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [114152775] [2020-07-21 13:46:56,963 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 13:46:56,964 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-07-21 13:46:56,964 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591923374] [2020-07-21 13:46:56,965 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-21 13:46:56,965 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 13:46:56,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-21 13:46:56,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-07-21 13:46:56,966 INFO L87 Difference]: Start difference. First operand 1390 states and 1826 transitions. Second operand 7 states. [2020-07-21 13:46:58,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 13:46:58,729 INFO L93 Difference]: Finished difference Result 4669 states and 6466 transitions. [2020-07-21 13:46:58,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-21 13:46:58,730 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 142 [2020-07-21 13:46:58,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 13:46:58,754 INFO L225 Difference]: With dead ends: 4669 [2020-07-21 13:46:58,754 INFO L226 Difference]: Without dead ends: 3289 [2020-07-21 13:46:58,760 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 279 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2020-07-21 13:46:58,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3289 states. [2020-07-21 13:46:58,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3289 to 2925. [2020-07-21 13:46:58,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2925 states. [2020-07-21 13:46:58,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2925 states to 2925 states and 3785 transitions. [2020-07-21 13:46:58,883 INFO L78 Accepts]: Start accepts. Automaton has 2925 states and 3785 transitions. Word has length 142 [2020-07-21 13:46:58,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 13:46:58,884 INFO L479 AbstractCegarLoop]: Abstraction has 2925 states and 3785 transitions. [2020-07-21 13:46:58,884 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-21 13:46:58,884 INFO L276 IsEmpty]: Start isEmpty. Operand 2925 states and 3785 transitions. [2020-07-21 13:46:58,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-07-21 13:46:58,893 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 13:46:58,894 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2020-07-21 13:46:59,106 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:46:59,107 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 13:46:59,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 13:46:59,107 INFO L82 PathProgramCache]: Analyzing trace with hash 1693850003, now seen corresponding path program 1 times [2020-07-21 13:46:59,108 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 13:46:59,108 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [417969662] [2020-07-21 13:46:59,108 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 13:46:59,260 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 13:46:59,261 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 13:46:59,263 INFO L263 TraceCheckSpWp]: Trace formula consists of 485 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 13:46:59,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 13:46:59,299 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2020-07-21 13:46:59,299 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 13:46:59,299 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [417969662] [2020-07-21 13:46:59,300 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 13:46:59,300 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 13:46:59,301 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222560176] [2020-07-21 13:46:59,301 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 13:46:59,302 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 13:46:59,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 13:46:59,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 13:46:59,303 INFO L87 Difference]: Start difference. First operand 2925 states and 3785 transitions. Second operand 3 states. [2020-07-21 13:46:59,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 13:46:59,955 INFO L93 Difference]: Finished difference Result 8038 states and 10693 transitions. [2020-07-21 13:46:59,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 13:46:59,956 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 146 [2020-07-21 13:46:59,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 13:46:59,993 INFO L225 Difference]: With dead ends: 8038 [2020-07-21 13:46:59,993 INFO L226 Difference]: Without dead ends: 5123 [2020-07-21 13:47:00,004 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 144 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 13:47:00,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5123 states. [2020-07-21 13:47:00,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5123 to 4170. [2020-07-21 13:47:00,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4170 states. [2020-07-21 13:47:00,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4170 states to 4170 states and 5480 transitions. [2020-07-21 13:47:00,188 INFO L78 Accepts]: Start accepts. Automaton has 4170 states and 5480 transitions. Word has length 146 [2020-07-21 13:47:00,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 13:47:00,190 INFO L479 AbstractCegarLoop]: Abstraction has 4170 states and 5480 transitions. [2020-07-21 13:47:00,191 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 13:47:00,194 INFO L276 IsEmpty]: Start isEmpty. Operand 4170 states and 5480 transitions. [2020-07-21 13:47:00,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-07-21 13:47:00,209 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 13:47:00,209 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2020-07-21 13:47:00,422 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:47:00,423 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 13:47:00,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 13:47:00,424 INFO L82 PathProgramCache]: Analyzing trace with hash -1459911568, now seen corresponding path program 1 times [2020-07-21 13:47:00,425 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 13:47:00,425 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1886466511] [2020-07-21 13:47:00,426 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 13:47:00,580 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 13:47:00,580 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 13:47:00,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 562 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 13:47:00,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 13:47:00,638 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 124 proven. 2 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2020-07-21 13:47:00,638 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 13:47:00,712 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 107 proven. 16 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2020-07-21 13:47:00,713 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1886466511] [2020-07-21 13:47:00,713 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 13:47:00,713 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-07-21 13:47:00,714 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934256105] [2020-07-21 13:47:00,714 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 13:47:00,715 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 13:47:00,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 13:47:00,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-07-21 13:47:00,715 INFO L87 Difference]: Start difference. First operand 4170 states and 5480 transitions. Second operand 6 states. [2020-07-21 13:47:01,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 13:47:01,627 INFO L93 Difference]: Finished difference Result 7409 states and 9840 transitions. [2020-07-21 13:47:01,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 13:47:01,628 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 171 [2020-07-21 13:47:01,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 13:47:01,653 INFO L225 Difference]: With dead ends: 7409 [2020-07-21 13:47:01,654 INFO L226 Difference]: Without dead ends: 4484 [2020-07-21 13:47:01,667 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 338 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-07-21 13:47:01,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4484 states. [2020-07-21 13:47:01,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4484 to 3918. [2020-07-21 13:47:01,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3918 states. [2020-07-21 13:47:01,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3918 states to 3918 states and 5041 transitions. [2020-07-21 13:47:01,783 INFO L78 Accepts]: Start accepts. Automaton has 3918 states and 5041 transitions. Word has length 171 [2020-07-21 13:47:01,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 13:47:01,783 INFO L479 AbstractCegarLoop]: Abstraction has 3918 states and 5041 transitions. [2020-07-21 13:47:01,783 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 13:47:01,783 INFO L276 IsEmpty]: Start isEmpty. Operand 3918 states and 5041 transitions. [2020-07-21 13:47:01,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2020-07-21 13:47:01,798 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 13:47:01,798 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-07-21 13:47:02,011 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:47:02,012 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 13:47:02,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 13:47:02,013 INFO L82 PathProgramCache]: Analyzing trace with hash 1887261731, now seen corresponding path program 1 times [2020-07-21 13:47:02,013 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 13:47:02,014 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [954898023] [2020-07-21 13:47:02,014 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 13:47:02,144 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 13:47:02,145 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 13:47:02,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 524 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 13:47:02,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 13:47:02,197 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 115 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-07-21 13:47:02,198 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 13:47:02,297 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 115 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-07-21 13:47:02,297 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [954898023] [2020-07-21 13:47:02,298 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 13:47:02,298 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-07-21 13:47:02,298 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307673864] [2020-07-21 13:47:02,299 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 13:47:02,299 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 13:47:02,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 13:47:02,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-07-21 13:47:02,300 INFO L87 Difference]: Start difference. First operand 3918 states and 5041 transitions. Second operand 6 states. [2020-07-21 13:47:03,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 13:47:03,502 INFO L93 Difference]: Finished difference Result 11529 states and 16127 transitions. [2020-07-21 13:47:03,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-21 13:47:03,503 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 179 [2020-07-21 13:47:03,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 13:47:03,553 INFO L225 Difference]: With dead ends: 11529 [2020-07-21 13:47:03,553 INFO L226 Difference]: Without dead ends: 7621 [2020-07-21 13:47:03,569 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 363 GetRequests, 354 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-07-21 13:47:03,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7621 states. [2020-07-21 13:47:03,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7621 to 7214. [2020-07-21 13:47:03,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7214 states. [2020-07-21 13:47:03,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7214 states to 7214 states and 9244 transitions. [2020-07-21 13:47:03,818 INFO L78 Accepts]: Start accepts. Automaton has 7214 states and 9244 transitions. Word has length 179 [2020-07-21 13:47:03,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 13:47:03,819 INFO L479 AbstractCegarLoop]: Abstraction has 7214 states and 9244 transitions. [2020-07-21 13:47:03,819 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 13:47:03,819 INFO L276 IsEmpty]: Start isEmpty. Operand 7214 states and 9244 transitions. [2020-07-21 13:47:03,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-07-21 13:47:03,845 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 13:47:03,846 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2020-07-21 13:47:04,060 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:47:04,061 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 13:47:04,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 13:47:04,062 INFO L82 PathProgramCache]: Analyzing trace with hash 310159644, now seen corresponding path program 1 times [2020-07-21 13:47:04,062 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 13:47:04,062 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1568088448] [2020-07-21 13:47:04,063 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 13:47:04,284 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 13:47:04,284 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 13:47:04,286 INFO L263 TraceCheckSpWp]: Trace formula consists of 572 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 13:47:04,290 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 13:47:04,336 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2020-07-21 13:47:04,336 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 13:47:04,337 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1568088448] [2020-07-21 13:47:04,337 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 13:47:04,337 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 13:47:04,338 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383346099] [2020-07-21 13:47:04,338 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 13:47:04,338 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 13:47:04,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 13:47:04,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 13:47:04,339 INFO L87 Difference]: Start difference. First operand 7214 states and 9244 transitions. Second operand 3 states. [2020-07-21 13:47:04,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 13:47:04,919 INFO L93 Difference]: Finished difference Result 12518 states and 16045 transitions. [2020-07-21 13:47:04,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 13:47:04,920 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 181 [2020-07-21 13:47:04,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 13:47:04,922 INFO L225 Difference]: With dead ends: 12518 [2020-07-21 13:47:04,924 INFO L226 Difference]: Without dead ends: 0 [2020-07-21 13:47:04,956 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 179 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 13:47:04,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-21 13:47:04,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-21 13:47:04,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-21 13:47:04,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-21 13:47:04,958 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 181 [2020-07-21 13:47:04,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 13:47:04,959 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-21 13:47:04,959 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 13:47:04,959 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-21 13:47:04,959 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-21 13:47:05,173 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:47:05,177 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-21 13:47:05,878 WARN L193 SmtUtils]: Spent 381.00 ms on a formula simplification. DAG size of input: 334 DAG size of output: 126 [2020-07-21 13:47:06,444 WARN L193 SmtUtils]: Spent 560.00 ms on a formula simplification. DAG size of input: 334 DAG size of output: 126 [2020-07-21 13:47:07,322 WARN L193 SmtUtils]: Spent 800.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 69 [2020-07-21 13:47:07,820 WARN L193 SmtUtils]: Spent 488.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 32 [2020-07-21 13:47:08,344 WARN L193 SmtUtils]: Spent 522.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 32 [2020-07-21 13:47:08,348 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-21 13:47:08,349 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (<= ~a8~0 |old(~a8~0)|) (<= ~a16~0 |old(~a16~0)|) (<= ~a20~0 |old(~a20~0)|) (<= |old(~a16~0)| ~a16~0)) [2020-07-21 13:47:08,352 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-21 13:47:08,352 INFO L268 CegarLoopResult]: For program point L333(lines 333 390) no Hoare annotation was computed. [2020-07-21 13:47:08,353 INFO L268 CegarLoopResult]: For program point L102(lines 102 390) no Hoare annotation was computed. [2020-07-21 13:47:08,353 INFO L268 CegarLoopResult]: For program point L565-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:47:08,353 INFO L268 CegarLoopResult]: For program point L532-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:47:08,354 INFO L268 CegarLoopResult]: For program point L499-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:47:08,354 INFO L268 CegarLoopResult]: For program point L466-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:47:08,354 INFO L268 CegarLoopResult]: For program point L433-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:47:08,354 INFO L268 CegarLoopResult]: For program point L400-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:47:08,354 INFO L268 CegarLoopResult]: For program point L268(lines 268 390) no Hoare annotation was computed. [2020-07-21 13:47:08,355 INFO L268 CegarLoopResult]: For program point L136(lines 136 390) no Hoare annotation was computed. [2020-07-21 13:47:08,355 INFO L268 CegarLoopResult]: For program point L566(line 566) no Hoare annotation was computed. [2020-07-21 13:47:08,355 INFO L268 CegarLoopResult]: For program point L533(line 533) no Hoare annotation was computed. [2020-07-21 13:47:08,355 INFO L268 CegarLoopResult]: For program point L500(line 500) no Hoare annotation was computed. [2020-07-21 13:47:08,356 INFO L268 CegarLoopResult]: For program point L467(line 467) no Hoare annotation was computed. [2020-07-21 13:47:08,356 INFO L268 CegarLoopResult]: For program point L434(line 434) no Hoare annotation was computed. [2020-07-21 13:47:08,356 INFO L268 CegarLoopResult]: For program point L401(line 401) no Hoare annotation was computed. [2020-07-21 13:47:08,356 INFO L268 CegarLoopResult]: For program point L203(lines 203 390) no Hoare annotation was computed. [2020-07-21 13:47:08,356 INFO L268 CegarLoopResult]: For program point L72(lines 72 390) no Hoare annotation was computed. [2020-07-21 13:47:08,357 INFO L268 CegarLoopResult]: For program point L568-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:47:08,357 INFO L268 CegarLoopResult]: For program point L535-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:47:08,357 INFO L268 CegarLoopResult]: For program point L502-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:47:08,357 INFO L268 CegarLoopResult]: For program point L469-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:47:08,357 INFO L268 CegarLoopResult]: For program point L436-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:47:08,357 INFO L268 CegarLoopResult]: For program point L403-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:47:08,357 INFO L268 CegarLoopResult]: For program point L337(lines 337 390) no Hoare annotation was computed. [2020-07-21 13:47:08,358 INFO L268 CegarLoopResult]: For program point L238(lines 238 390) no Hoare annotation was computed. [2020-07-21 13:47:08,358 INFO L268 CegarLoopResult]: For program point L569(line 569) no Hoare annotation was computed. [2020-07-21 13:47:08,358 INFO L268 CegarLoopResult]: For program point L536(line 536) no Hoare annotation was computed. [2020-07-21 13:47:08,358 INFO L268 CegarLoopResult]: For program point L503(line 503) no Hoare annotation was computed. [2020-07-21 13:47:08,358 INFO L268 CegarLoopResult]: For program point L470(line 470) no Hoare annotation was computed. [2020-07-21 13:47:08,358 INFO L268 CegarLoopResult]: For program point L437(line 437) no Hoare annotation was computed. [2020-07-21 13:47:08,358 INFO L268 CegarLoopResult]: For program point L404(line 404) no Hoare annotation was computed. [2020-07-21 13:47:08,359 INFO L268 CegarLoopResult]: For program point L173(lines 173 390) no Hoare annotation was computed. [2020-07-21 13:47:08,359 INFO L268 CegarLoopResult]: For program point L140(lines 140 390) no Hoare annotation was computed. [2020-07-21 13:47:08,359 INFO L268 CegarLoopResult]: For program point L372(lines 372 390) no Hoare annotation was computed. [2020-07-21 13:47:08,359 INFO L268 CegarLoopResult]: For program point calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION(line 434) no Hoare annotation was computed. [2020-07-21 13:47:08,359 INFO L268 CegarLoopResult]: For program point L306(lines 306 390) no Hoare annotation was computed. [2020-07-21 13:47:08,359 INFO L268 CegarLoopResult]: For program point L273(lines 273 390) no Hoare annotation was computed. [2020-07-21 13:47:08,360 INFO L268 CegarLoopResult]: For program point L108(lines 108 390) no Hoare annotation was computed. [2020-07-21 13:47:08,360 INFO L268 CegarLoopResult]: For program point L571-1(lines 571 573) no Hoare annotation was computed. [2020-07-21 13:47:08,360 INFO L268 CegarLoopResult]: For program point L538-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:47:08,360 INFO L268 CegarLoopResult]: For program point L505-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:47:08,360 INFO L268 CegarLoopResult]: For program point L472-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:47:08,360 INFO L268 CegarLoopResult]: For program point L439-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:47:08,360 INFO L268 CegarLoopResult]: For program point L406-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:47:08,360 INFO L268 CegarLoopResult]: For program point L208(lines 208 390) no Hoare annotation was computed. [2020-07-21 13:47:08,361 INFO L268 CegarLoopResult]: For program point L43(lines 43 390) no Hoare annotation was computed. [2020-07-21 13:47:08,361 INFO L268 CegarLoopResult]: For program point L572(line 572) no Hoare annotation was computed. [2020-07-21 13:47:08,361 INFO L268 CegarLoopResult]: For program point L539(line 539) no Hoare annotation was computed. [2020-07-21 13:47:08,361 INFO L268 CegarLoopResult]: For program point L506(line 506) no Hoare annotation was computed. [2020-07-21 13:47:08,361 INFO L268 CegarLoopResult]: For program point L473(line 473) no Hoare annotation was computed. [2020-07-21 13:47:08,361 INFO L268 CegarLoopResult]: For program point L440(line 440) no Hoare annotation was computed. [2020-07-21 13:47:08,361 INFO L268 CegarLoopResult]: For program point L407(line 407) no Hoare annotation was computed. [2020-07-21 13:47:08,361 INFO L268 CegarLoopResult]: For program point L144(lines 144 390) no Hoare annotation was computed. [2020-07-21 13:47:08,362 INFO L268 CegarLoopResult]: For program point L541-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:47:08,362 INFO L268 CegarLoopResult]: For program point L508-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:47:08,362 INFO L268 CegarLoopResult]: For program point L475-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:47:08,362 INFO L268 CegarLoopResult]: For program point L442-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:47:08,362 INFO L268 CegarLoopResult]: For program point L409-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:47:08,362 INFO L268 CegarLoopResult]: For program point L178(lines 178 390) no Hoare annotation was computed. [2020-07-21 13:47:08,362 INFO L268 CegarLoopResult]: For program point L542(line 542) no Hoare annotation was computed. [2020-07-21 13:47:08,363 INFO L268 CegarLoopResult]: For program point L509(line 509) no Hoare annotation was computed. [2020-07-21 13:47:08,363 INFO L268 CegarLoopResult]: For program point L476(line 476) no Hoare annotation was computed. [2020-07-21 13:47:08,363 INFO L268 CegarLoopResult]: For program point L443(line 443) no Hoare annotation was computed. [2020-07-21 13:47:08,363 INFO L268 CegarLoopResult]: For program point L410(line 410) no Hoare annotation was computed. [2020-07-21 13:47:08,363 INFO L268 CegarLoopResult]: For program point L377(lines 377 390) no Hoare annotation was computed. [2020-07-21 13:47:08,363 INFO L268 CegarLoopResult]: For program point L278(lines 278 390) no Hoare annotation was computed. [2020-07-21 13:47:08,363 INFO L268 CegarLoopResult]: For program point L245(lines 245 390) no Hoare annotation was computed. [2020-07-21 13:47:08,364 INFO L268 CegarLoopResult]: For program point L80(lines 80 390) no Hoare annotation was computed. [2020-07-21 13:47:08,364 INFO L268 CegarLoopResult]: For program point L345(lines 345 390) no Hoare annotation was computed. [2020-07-21 13:47:08,364 INFO L268 CegarLoopResult]: For program point L312(lines 312 390) no Hoare annotation was computed. [2020-07-21 13:47:08,364 INFO L268 CegarLoopResult]: For program point L114(lines 114 390) no Hoare annotation was computed. [2020-07-21 13:47:08,364 INFO L268 CegarLoopResult]: For program point L544-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:47:08,364 INFO L268 CegarLoopResult]: For program point L511-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:47:08,364 INFO L268 CegarLoopResult]: For program point L478-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:47:08,365 INFO L268 CegarLoopResult]: For program point L445-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:47:08,365 INFO L268 CegarLoopResult]: For program point L412-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:47:08,365 INFO L268 CegarLoopResult]: For program point L214(lines 214 390) no Hoare annotation was computed. [2020-07-21 13:47:08,365 INFO L268 CegarLoopResult]: For program point L148(lines 148 390) no Hoare annotation was computed. [2020-07-21 13:47:08,365 INFO L268 CegarLoopResult]: For program point L49(lines 49 390) no Hoare annotation was computed. [2020-07-21 13:47:08,365 INFO L268 CegarLoopResult]: For program point L545(line 545) no Hoare annotation was computed. [2020-07-21 13:47:08,365 INFO L268 CegarLoopResult]: For program point L512(line 512) no Hoare annotation was computed. [2020-07-21 13:47:08,365 INFO L268 CegarLoopResult]: For program point L479(line 479) no Hoare annotation was computed. [2020-07-21 13:47:08,366 INFO L268 CegarLoopResult]: For program point L446(line 446) no Hoare annotation was computed. [2020-07-21 13:47:08,366 INFO L268 CegarLoopResult]: For program point L413(line 413) no Hoare annotation was computed. [2020-07-21 13:47:08,366 INFO L268 CegarLoopResult]: For program point L84(lines 84 390) no Hoare annotation was computed. [2020-07-21 13:47:08,366 INFO L268 CegarLoopResult]: For program point calculate_outputFINAL(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:47:08,366 INFO L268 CegarLoopResult]: For program point calculate_outputEXIT(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:47:08,366 INFO L268 CegarLoopResult]: For program point L547-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:47:08,366 INFO L268 CegarLoopResult]: For program point L514-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:47:08,366 INFO L268 CegarLoopResult]: For program point L481-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:47:08,367 INFO L268 CegarLoopResult]: For program point L448-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:47:08,367 INFO L268 CegarLoopResult]: For program point L382(lines 382 390) no Hoare annotation was computed. [2020-07-21 13:47:08,367 INFO L268 CegarLoopResult]: For program point L415-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:47:08,367 INFO L268 CegarLoopResult]: For program point L316(lines 316 390) no Hoare annotation was computed. [2020-07-21 13:47:08,367 INFO L268 CegarLoopResult]: For program point L250(lines 250 390) no Hoare annotation was computed. [2020-07-21 13:47:08,367 INFO L268 CegarLoopResult]: For program point L548(line 548) no Hoare annotation was computed. [2020-07-21 13:47:08,367 INFO L268 CegarLoopResult]: For program point L515(line 515) no Hoare annotation was computed. [2020-07-21 13:47:08,367 INFO L268 CegarLoopResult]: For program point L482(line 482) no Hoare annotation was computed. [2020-07-21 13:47:08,368 INFO L268 CegarLoopResult]: For program point L449(line 449) no Hoare annotation was computed. [2020-07-21 13:47:08,368 INFO L268 CegarLoopResult]: For program point L416(line 416) no Hoare annotation was computed. [2020-07-21 13:47:08,368 INFO L268 CegarLoopResult]: For program point L218(lines 218 390) no Hoare annotation was computed. [2020-07-21 13:47:08,368 INFO L268 CegarLoopResult]: For program point L152(lines 152 390) no Hoare annotation was computed. [2020-07-21 13:47:08,368 INFO L268 CegarLoopResult]: For program point L119(lines 119 390) no Hoare annotation was computed. [2020-07-21 13:47:08,368 INFO L268 CegarLoopResult]: For program point L318(lines 318 390) no Hoare annotation was computed. [2020-07-21 13:47:08,368 INFO L268 CegarLoopResult]: For program point L186(lines 186 390) no Hoare annotation was computed. [2020-07-21 13:47:08,368 INFO L268 CegarLoopResult]: For program point L54(lines 54 390) no Hoare annotation was computed. [2020-07-21 13:47:08,369 INFO L268 CegarLoopResult]: For program point L550-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:47:08,369 INFO L268 CegarLoopResult]: For program point L517-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:47:08,369 INFO L268 CegarLoopResult]: For program point L484-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:47:08,369 INFO L268 CegarLoopResult]: For program point L451-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:47:08,369 INFO L268 CegarLoopResult]: For program point L418-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:47:08,369 INFO L268 CegarLoopResult]: For program point L286(lines 286 390) no Hoare annotation was computed. [2020-07-21 13:47:08,369 INFO L268 CegarLoopResult]: For program point L551(line 551) no Hoare annotation was computed. [2020-07-21 13:47:08,369 INFO L268 CegarLoopResult]: For program point L518(line 518) no Hoare annotation was computed. [2020-07-21 13:47:08,369 INFO L268 CegarLoopResult]: For program point L485(line 485) no Hoare annotation was computed. [2020-07-21 13:47:08,370 INFO L268 CegarLoopResult]: For program point L452(line 452) no Hoare annotation was computed. [2020-07-21 13:47:08,370 INFO L268 CegarLoopResult]: For program point L419(line 419) no Hoare annotation was computed. [2020-07-21 13:47:08,370 INFO L268 CegarLoopResult]: For program point L353(lines 353 390) no Hoare annotation was computed. [2020-07-21 13:47:08,370 INFO L268 CegarLoopResult]: For program point L189(lines 189 390) no Hoare annotation was computed. [2020-07-21 13:47:08,370 INFO L268 CegarLoopResult]: For program point L553-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:47:08,370 INFO L268 CegarLoopResult]: For program point L520-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:47:08,370 INFO L268 CegarLoopResult]: For program point L487-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:47:08,370 INFO L268 CegarLoopResult]: For program point L454-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:47:08,371 INFO L268 CegarLoopResult]: For program point L421-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:47:08,371 INFO L268 CegarLoopResult]: For program point L355(lines 355 390) no Hoare annotation was computed. [2020-07-21 13:47:08,371 INFO L268 CegarLoopResult]: For program point L256(lines 256 390) no Hoare annotation was computed. [2020-07-21 13:47:08,371 INFO L268 CegarLoopResult]: For program point L223(lines 223 390) no Hoare annotation was computed. [2020-07-21 13:47:08,371 INFO L268 CegarLoopResult]: For program point L124(lines 124 390) no Hoare annotation was computed. [2020-07-21 13:47:08,371 INFO L268 CegarLoopResult]: For program point L554(line 554) no Hoare annotation was computed. [2020-07-21 13:47:08,371 INFO L268 CegarLoopResult]: For program point L521(line 521) no Hoare annotation was computed. [2020-07-21 13:47:08,371 INFO L268 CegarLoopResult]: For program point L488(line 488) no Hoare annotation was computed. [2020-07-21 13:47:08,372 INFO L268 CegarLoopResult]: For program point L455(line 455) no Hoare annotation was computed. [2020-07-21 13:47:08,372 INFO L268 CegarLoopResult]: For program point L422(line 422) no Hoare annotation was computed. [2020-07-21 13:47:08,372 INFO L268 CegarLoopResult]: For program point L92(lines 92 390) no Hoare annotation was computed. [2020-07-21 13:47:08,372 INFO L264 CegarLoopResult]: At program point calculate_outputENTRY(lines 30 575) the Hoare annotation is: (let ((.cse6 (< ~a8~0 15)) (.cse14 (<= ~a8~0 |old(~a8~0)|)) (.cse3 (<= ~a16~0 |old(~a16~0)|)) (.cse15 (<= ~a8~0 13)) (.cse9 (not (<= |old(~a8~0)| 13))) (.cse7 (not (<= |old(~a16~0)| 5))) (.cse8 (not (< |old(~a8~0)| 15)))) (let ((.cse2 (<= ~a7~0 0)) (.cse1 (not (<= |old(~a7~0)| 0))) (.cse11 (and .cse9 (or .cse7 .cse8))) (.cse13 (not (<= |old(~a17~0)| 0))) (.cse10 (or (and .cse14 .cse3 (<= ~a16~0 5) .cse6) (and .cse14 .cse3 .cse15))) (.cse12 (<= ~a17~0 0)) (.cse0 (not (<= 15 |old(~a8~0)|))) (.cse4 (<= ~a20~0 |old(~a20~0)|)) (.cse5 (<= |old(~a16~0)| ~a16~0))) (and (or .cse0 .cse1 .cse2) (or (and .cse3 .cse4 .cse5 .cse2 .cse6) (and (or .cse1 .cse7 .cse8) (or .cse1 .cse9))) (or (and .cse10 .cse4 .cse5) .cse11 (not (<= 5 |old(~a16~0)|))) (or .cse0 .cse12 .cse13) (or (and (or .cse11 .cse13) (or .cse9 (not (<= |old(~a16~0)| 4)))) (and .cse4 (or (and .cse10 .cse5 .cse12) (and .cse14 .cse3 .cse15 .cse5 (<= ~a16~0 4))))) (or .cse0 (and .cse14 .cse3 .cse4 .cse5 (<= 15 ~a8~0)))))) [2020-07-21 13:47:08,372 INFO L268 CegarLoopResult]: For program point L324(lines 324 390) no Hoare annotation was computed. [2020-07-21 13:47:08,372 INFO L268 CegarLoopResult]: For program point L556-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:47:08,373 INFO L268 CegarLoopResult]: For program point L523-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:47:08,373 INFO L268 CegarLoopResult]: For program point L490-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:47:08,373 INFO L268 CegarLoopResult]: For program point L457-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:47:08,373 INFO L268 CegarLoopResult]: For program point L391(lines 391 393) no Hoare annotation was computed. [2020-07-21 13:47:08,373 INFO L268 CegarLoopResult]: For program point L424-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:47:08,373 INFO L268 CegarLoopResult]: For program point L391-2(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:47:08,373 INFO L268 CegarLoopResult]: For program point L292(lines 292 390) no Hoare annotation was computed. [2020-07-21 13:47:08,374 INFO L268 CegarLoopResult]: For program point L160(lines 160 390) no Hoare annotation was computed. [2020-07-21 13:47:08,374 INFO L268 CegarLoopResult]: For program point L557(line 557) no Hoare annotation was computed. [2020-07-21 13:47:08,374 INFO L268 CegarLoopResult]: For program point L524(line 524) no Hoare annotation was computed. [2020-07-21 13:47:08,374 INFO L268 CegarLoopResult]: For program point L491(line 491) no Hoare annotation was computed. [2020-07-21 13:47:08,374 INFO L268 CegarLoopResult]: For program point L458(line 458) no Hoare annotation was computed. [2020-07-21 13:47:08,374 INFO L268 CegarLoopResult]: For program point L425(line 425) no Hoare annotation was computed. [2020-07-21 13:47:08,374 INFO L268 CegarLoopResult]: For program point L392(line 392) no Hoare annotation was computed. [2020-07-21 13:47:08,374 INFO L268 CegarLoopResult]: For program point L194(lines 194 390) no Hoare annotation was computed. [2020-07-21 13:47:08,375 INFO L268 CegarLoopResult]: For program point L62(lines 62 390) no Hoare annotation was computed. [2020-07-21 13:47:08,375 INFO L268 CegarLoopResult]: For program point L261(lines 261 390) no Hoare annotation was computed. [2020-07-21 13:47:08,375 INFO L268 CegarLoopResult]: For program point L129(lines 129 390) no Hoare annotation was computed. [2020-07-21 13:47:08,375 INFO L268 CegarLoopResult]: For program point L559-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:47:08,375 INFO L268 CegarLoopResult]: For program point L526-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:47:08,375 INFO L268 CegarLoopResult]: For program point L493-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:47:08,375 INFO L268 CegarLoopResult]: For program point L460-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:47:08,376 INFO L268 CegarLoopResult]: For program point L427-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:47:08,376 INFO L268 CegarLoopResult]: For program point L361(lines 361 390) no Hoare annotation was computed. [2020-07-21 13:47:08,376 INFO L268 CegarLoopResult]: For program point L394-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:47:08,376 INFO L268 CegarLoopResult]: For program point L97(lines 97 390) no Hoare annotation was computed. [2020-07-21 13:47:08,376 INFO L268 CegarLoopResult]: For program point L31(lines 31 390) no Hoare annotation was computed. [2020-07-21 13:47:08,376 INFO L268 CegarLoopResult]: For program point L560(line 560) no Hoare annotation was computed. [2020-07-21 13:47:08,376 INFO L268 CegarLoopResult]: For program point L527(line 527) no Hoare annotation was computed. [2020-07-21 13:47:08,376 INFO L268 CegarLoopResult]: For program point L494(line 494) no Hoare annotation was computed. [2020-07-21 13:47:08,376 INFO L268 CegarLoopResult]: For program point L461(line 461) no Hoare annotation was computed. [2020-07-21 13:47:08,377 INFO L268 CegarLoopResult]: For program point L428(line 428) no Hoare annotation was computed. [2020-07-21 13:47:08,377 INFO L268 CegarLoopResult]: For program point L395(line 395) no Hoare annotation was computed. [2020-07-21 13:47:08,377 INFO L268 CegarLoopResult]: For program point L329(lines 329 390) no Hoare annotation was computed. [2020-07-21 13:47:08,377 INFO L268 CegarLoopResult]: For program point L197(lines 197 390) no Hoare annotation was computed. [2020-07-21 13:47:08,377 INFO L268 CegarLoopResult]: For program point L65(lines 65 390) no Hoare annotation was computed. [2020-07-21 13:47:08,377 INFO L268 CegarLoopResult]: For program point L363(lines 363 390) no Hoare annotation was computed. [2020-07-21 13:47:08,377 INFO L268 CegarLoopResult]: For program point L231(lines 231 390) no Hoare annotation was computed. [2020-07-21 13:47:08,377 INFO L268 CegarLoopResult]: For program point L165(lines 165 390) no Hoare annotation was computed. [2020-07-21 13:47:08,378 INFO L268 CegarLoopResult]: For program point L562-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:47:08,378 INFO L268 CegarLoopResult]: For program point L529-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:47:08,378 INFO L268 CegarLoopResult]: For program point L496-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:47:08,378 INFO L268 CegarLoopResult]: For program point L463-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:47:08,378 INFO L268 CegarLoopResult]: For program point L430-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:47:08,378 INFO L268 CegarLoopResult]: For program point L397-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 13:47:08,378 INFO L268 CegarLoopResult]: For program point L265(lines 265 390) no Hoare annotation was computed. [2020-07-21 13:47:08,379 INFO L268 CegarLoopResult]: For program point L563(line 563) no Hoare annotation was computed. [2020-07-21 13:47:08,379 INFO L268 CegarLoopResult]: For program point L530(line 530) no Hoare annotation was computed. [2020-07-21 13:47:08,379 INFO L268 CegarLoopResult]: For program point L497(line 497) no Hoare annotation was computed. [2020-07-21 13:47:08,379 INFO L268 CegarLoopResult]: For program point L464(line 464) no Hoare annotation was computed. [2020-07-21 13:47:08,379 INFO L268 CegarLoopResult]: For program point L431(line 431) no Hoare annotation was computed. [2020-07-21 13:47:08,379 INFO L268 CegarLoopResult]: For program point L398(line 398) no Hoare annotation was computed. [2020-07-21 13:47:08,379 INFO L268 CegarLoopResult]: For program point L365(lines 365 390) no Hoare annotation was computed. [2020-07-21 13:47:08,379 INFO L268 CegarLoopResult]: For program point L299(lines 299 390) no Hoare annotation was computed. [2020-07-21 13:47:08,380 INFO L268 CegarLoopResult]: For program point L35(lines 35 390) no Hoare annotation was computed. [2020-07-21 13:47:08,380 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-21 13:47:08,380 INFO L264 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: (and (<= ~a7~0 0) (<= ~a16~0 5) (<= 15 ~a8~0) (<= 5 ~a16~0)) [2020-07-21 13:47:08,380 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-21 13:47:08,380 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-21 13:47:08,380 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)|) (<= ~a7~0 0) (<= ~a16~0 5) (<= 15 ~a8~0) (<= 5 ~a16~0)) (not (<= 15 |old(~a8~0)|)) (not (<= |old(~a7~0)| 0)) (not (<= |old(~a16~0)| 5)) (not (<= 5 |old(~a16~0)|))) [2020-07-21 13:47:08,381 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 577 594) no Hoare annotation was computed. [2020-07-21 13:47:08,381 INFO L264 CegarLoopResult]: At program point L591(line 591) the Hoare annotation is: (let ((.cse0 (<= ~a8~0 13)) (.cse2 (<= ~a16~0 5))) (let ((.cse1 (or .cse0 (and .cse2 (< ~a8~0 15))))) (or .cse0 (not (<= 15 |old(~a8~0)|)) (and (<= 5 ~a16~0) .cse1) (not (<= |old(~a7~0)| 0)) (<= 15 ~a8~0) (not (<= |old(~a16~0)| 5)) (and (<= ~a7~0 0) .cse2) (not (<= 5 |old(~a16~0)|)) (and (<= ~a17~0 0) .cse1)))) [2020-07-21 13:47:08,381 INFO L268 CegarLoopResult]: For program point L591-1(line 591) no Hoare annotation was computed. [2020-07-21 13:47:08,381 INFO L268 CegarLoopResult]: For program point L588(line 588) no Hoare annotation was computed. [2020-07-21 13:47:08,381 INFO L264 CegarLoopResult]: At program point L583-2(lines 583 593) the Hoare annotation is: (let ((.cse0 (<= ~a8~0 13)) (.cse2 (<= ~a16~0 5))) (let ((.cse1 (or .cse0 (and .cse2 (< ~a8~0 15))))) (or .cse0 (not (<= 15 |old(~a8~0)|)) (and (<= 5 ~a16~0) .cse1) (not (<= |old(~a7~0)| 0)) (<= 15 ~a8~0) (not (<= |old(~a16~0)| 5)) (and (<= ~a7~0 0) .cse2) (not (<= 5 |old(~a16~0)|)) (and (<= ~a17~0 0) .cse1)))) [2020-07-21 13:47:08,381 INFO L268 CegarLoopResult]: For program point L583-3(lines 577 594) no Hoare annotation was computed. [2020-07-21 13:47:08,402 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 01:47:08 BoogieIcfgContainer [2020-07-21 13:47:08,402 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 13:47:08,404 INFO L168 Benchmark]: Toolchain (without parser) took 19393.31 ms. Allocated memory was 140.5 MB in the beginning and 518.5 MB in the end (delta: 378.0 MB). Free memory was 104.4 MB in the beginning and 365.6 MB in the end (delta: -261.1 MB). Peak memory consumption was 364.7 MB. Max. memory is 7.1 GB. [2020-07-21 13:47:08,405 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 140.5 MB. Free memory was 123.6 MB in the beginning and 123.4 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-07-21 13:47:08,406 INFO L168 Benchmark]: CACSL2BoogieTranslator took 759.00 ms. Allocated memory was 140.5 MB in the beginning and 205.0 MB in the end (delta: 64.5 MB). Free memory was 104.0 MB in the beginning and 170.8 MB in the end (delta: -66.7 MB). Peak memory consumption was 34.7 MB. Max. memory is 7.1 GB. [2020-07-21 13:47:08,407 INFO L168 Benchmark]: Boogie Preprocessor took 117.69 ms. Allocated memory is still 205.0 MB. Free memory was 170.8 MB in the beginning and 165.9 MB in the end (delta: 4.8 MB). Peak memory consumption was 4.8 MB. Max. memory is 7.1 GB. [2020-07-21 13:47:08,408 INFO L168 Benchmark]: RCFGBuilder took 1193.56 ms. Allocated memory was 205.0 MB in the beginning and 237.5 MB in the end (delta: 32.5 MB). Free memory was 165.9 MB in the beginning and 175.2 MB in the end (delta: -9.3 MB). Peak memory consumption was 78.1 MB. Max. memory is 7.1 GB. [2020-07-21 13:47:08,409 INFO L168 Benchmark]: TraceAbstraction took 17317.31 ms. Allocated memory was 237.5 MB in the beginning and 518.5 MB in the end (delta: 281.0 MB). Free memory was 175.2 MB in the beginning and 365.6 MB in the end (delta: -190.4 MB). Peak memory consumption was 338.5 MB. Max. memory is 7.1 GB. [2020-07-21 13:47:08,412 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 140.5 MB. Free memory was 123.6 MB in the beginning and 123.4 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 759.00 ms. Allocated memory was 140.5 MB in the beginning and 205.0 MB in the end (delta: 64.5 MB). Free memory was 104.0 MB in the beginning and 170.8 MB in the end (delta: -66.7 MB). Peak memory consumption was 34.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 117.69 ms. Allocated memory is still 205.0 MB. Free memory was 170.8 MB in the beginning and 165.9 MB in the end (delta: 4.8 MB). Peak memory consumption was 4.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1193.56 ms. Allocated memory was 205.0 MB in the beginning and 237.5 MB in the end (delta: 32.5 MB). Free memory was 165.9 MB in the beginning and 175.2 MB in the end (delta: -9.3 MB). Peak memory consumption was 78.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 17317.31 ms. Allocated memory was 237.5 MB in the beginning and 518.5 MB in the end (delta: 281.0 MB). Free memory was 175.2 MB in the beginning and 365.6 MB in the end (delta: -190.4 MB). Peak memory consumption was 338.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 434]: 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 || !(15 <= \old(a8))) || (5 <= a16 && (a8 <= 13 || (a16 <= 5 && a8 < 15)))) || !(\old(a7) <= 0)) || 15 <= a8) || !(\old(a16) <= 5)) || (a7 <= 0 && a16 <= 5)) || !(5 <= \old(a16))) || (a17 <= 0 && (a8 <= 13 || (a16 <= 5 && a8 < 15))) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 207 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 14.0s, OverallIterations: 8, TraceHistogramMax: 5, AutomataDifference: 9.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 3.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 455 SDtfs, 2472 SDslu, 322 SDs, 0 SdLazy, 6584 SolverSat, 962 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1768 GetRequests, 1723 SyntacticMatches, 5 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7214occurred 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: 0.8s AutomataMinimizationTime, 8 MinimizatonAttempts, 2634 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 184 PreInvPairs, 290 NumberOfFragments, 401 HoareAnnotationTreeSize, 184 FomulaSimplifications, 46361 FormulaSimplificationTreeSizeReduction, 1.2s HoareSimplificationTime, 7 FomulaSimplificationsInter, 13547 FormulaSimplificationTreeSizeReductionInter, 1.8s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 1135 NumberOfCodeBlocks, 1135 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 1737 ConstructedInterpolants, 0 QuantifiedInterpolants, 465815 SizeOfPredicates, 10 NumberOfNonLiveVariables, 3646 ConjunctsInSsa, 36 ConjunctsInUnsatCore, 12 InterpolantComputations, 4 PerfectInterpolantSequences, 1054/1101 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...