/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 DAGSIZE --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label08.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 21:59:24,187 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2020-07-20 21:59:24,203 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 21:59:24,204 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 21:59:24,206 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 21:59:24,208 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 21:59:24,211 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 21:59:24,212 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 21:59:24,213 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 21:59:24,214 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 21:59:24,215 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 21:59:24,216 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 21:59:24,217 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 21:59:24,219 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 21:59:24,220 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 21:59:24,221 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 21:59:24,224 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 21:59:24,227 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 21:59:24,229 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 21:59:24,230 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 21:59:24,232 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 21:59:24,233 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 21:59:24,236 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 21:59:24,246 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 21:59:24,248 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 21:59:24,249 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 21:59:24,253 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-20 21:59:24,285 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 21:59:24,286 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 21:59:24,289 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 21:59:24,290 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 21:59:24,290 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 21:59:24,290 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 21:59:24,290 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 21:59:24,291 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 21:59:24,291 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 21:59:24,294 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 21:59:24,295 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 21:59:24,295 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 21:59:24,295 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 21:59:24,296 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 21:59:24,296 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 21:59:24,296 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 21:59:24,297 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 21:59:24,298 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 21:59:24,298 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 21:59:24,298 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 21:59:24,299 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 21:59:24,299 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 21:59:24,299 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 21:59:24,299 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 21:59:24,299 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 21:59:24,300 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 21:59:24,300 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:59:24,300 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 21:59:24,300 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 21:59:24,300 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 -> DAGSIZE Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4 [2020-07-20 21:59:24,626 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 21:59:24,641 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 21:59:24,644 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 21:59:24,646 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 21:59:24,646 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 21:59:24,647 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label08.c [2020-07-20 21:59:24,733 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/225c97e58/789eb599f5434a1b8d9245df0128a1a7/FLAGebcdd5fe1 [2020-07-20 21:59:25,323 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 21:59:25,324 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem01_label08.c [2020-07-20 21:59:25,338 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/225c97e58/789eb599f5434a1b8d9245df0128a1a7/FLAGebcdd5fe1 [2020-07-20 21:59:25,609 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/225c97e58/789eb599f5434a1b8d9245df0128a1a7 [2020-07-20 21:59:25,619 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 21:59:25,622 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 21:59:25,624 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 21:59:25,624 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 21:59:25,628 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 21:59:25,629 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 09:59:25" (1/1) ... [2020-07-20 21:59:25,632 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@288eceee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:59:25, skipping insertion in model container [2020-07-20 21:59:25,632 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 09:59:25" (1/1) ... [2020-07-20 21:59:25,641 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 21:59:25,694 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 21:59:26,266 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 21:59:26,284 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 21:59:26,425 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 21:59:26,443 INFO L208 MainTranslator]: Completed translation [2020-07-20 21:59:26,443 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:59:26 WrapperNode [2020-07-20 21:59:26,444 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 21:59:26,444 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 21:59:26,445 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 21:59:26,445 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 21:59:26,457 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:59:26" (1/1) ... [2020-07-20 21:59:26,458 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:59:26" (1/1) ... [2020-07-20 21:59:26,488 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:59:26" (1/1) ... [2020-07-20 21:59:26,488 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:59:26" (1/1) ... [2020-07-20 21:59:26,547 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:59:26" (1/1) ... [2020-07-20 21:59:26,567 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:59:26" (1/1) ... [2020-07-20 21:59:26,572 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:59:26" (1/1) ... [2020-07-20 21:59:26,580 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 21:59:26,581 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 21:59:26,581 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 21:59:26,581 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 21:59:26,582 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:59:26" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 21:59:26,656 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 21:59:26,657 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 21:59:26,657 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-07-20 21:59:26,657 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 21:59:26,657 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-07-20 21:59:26,658 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 21:59:26,658 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 21:59:26,658 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-20 21:59:26,658 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 21:59:26,658 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 21:59:26,659 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 21:59:27,985 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 21:59:27,986 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-20 21:59:27,993 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 09:59:27 BoogieIcfgContainer [2020-07-20 21:59:27,993 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 21:59:27,995 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 21:59:27,995 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 21:59:27,999 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 21:59:28,000 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 09:59:25" (1/3) ... [2020-07-20 21:59:28,000 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@723034cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 09:59:28, skipping insertion in model container [2020-07-20 21:59:28,001 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:59:26" (2/3) ... [2020-07-20 21:59:28,001 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@723034cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 09:59:28, skipping insertion in model container [2020-07-20 21:59:28,002 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 09:59:27" (3/3) ... [2020-07-20 21:59:28,004 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label08.c [2020-07-20 21:59:28,017 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 21:59:28,026 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 21:59:28,042 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 21:59:28,073 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 21:59:28,074 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 21:59:28,074 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 21:59:28,074 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 21:59:28,074 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 21:59:28,074 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 21:59:28,074 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 21:59:28,075 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 21:59:28,103 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states. [2020-07-20 21:59:28,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-07-20 21:59:28,118 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 21:59:28,119 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 21:59:28,120 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 21:59:28,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 21:59:28,129 INFO L82 PathProgramCache]: Analyzing trace with hash -1920403729, now seen corresponding path program 1 times [2020-07-20 21:59:28,140 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 21:59:28,141 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [554956123] [2020-07-20 21:59:28,141 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:59:28,352 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 21:59:28,352 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 21:59:28,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-20 21:59:28,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 21:59:28,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 21:59:28,474 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 21:59:28,476 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [554956123] [2020-07-20 21:59:28,476 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 21:59:28,477 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 21:59:28,478 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95171884] [2020-07-20 21:59:28,484 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 21:59:28,484 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 21:59:28,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 21:59:28,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 21:59:28,503 INFO L87 Difference]: Start difference. First operand 207 states. Second operand 3 states. [2020-07-20 21:59:29,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 21:59:29,554 INFO L93 Difference]: Finished difference Result 572 states and 963 transitions. [2020-07-20 21:59:29,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 21:59:29,558 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 119 [2020-07-20 21:59:29,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 21:59:29,593 INFO L225 Difference]: With dead ends: 572 [2020-07-20 21:59:29,594 INFO L226 Difference]: Without dead ends: 278 [2020-07-20 21:59:29,606 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 21:59:29,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2020-07-20 21:59:29,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 278. [2020-07-20 21:59:29,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 278 states. [2020-07-20 21:59:29,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 394 transitions. [2020-07-20 21:59:29,727 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 394 transitions. Word has length 119 [2020-07-20 21:59:29,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 21:59:29,728 INFO L479 AbstractCegarLoop]: Abstraction has 278 states and 394 transitions. [2020-07-20 21:59:29,728 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 21:59:29,729 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 394 transitions. [2020-07-20 21:59:29,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-07-20 21:59:29,733 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 21:59:29,734 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 21:59:29,949 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:59:29,950 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 21:59:29,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 21:59:29,951 INFO L82 PathProgramCache]: Analyzing trace with hash 10659704, now seen corresponding path program 1 times [2020-07-20 21:59:29,951 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 21:59:29,952 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [706132255] [2020-07-20 21:59:29,953 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:59:30,066 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 21:59:30,067 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 21:59:30,069 INFO L263 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-20 21:59:30,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 21:59:30,144 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 21:59:30,145 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 21:59:30,145 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [706132255] [2020-07-20 21:59:30,146 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 21:59:30,146 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 21:59:30,146 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559544740] [2020-07-20 21:59:30,148 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 21:59:30,149 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 21:59:30,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 21:59:30,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 21:59:30,150 INFO L87 Difference]: Start difference. First operand 278 states and 394 transitions. Second operand 5 states. [2020-07-20 21:59:31,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 21:59:31,088 INFO L93 Difference]: Finished difference Result 842 states and 1218 transitions. [2020-07-20 21:59:31,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-20 21:59:31,093 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 129 [2020-07-20 21:59:31,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 21:59:31,099 INFO L225 Difference]: With dead ends: 842 [2020-07-20 21:59:31,100 INFO L226 Difference]: Without dead ends: 570 [2020-07-20 21:59:31,102 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-07-20 21:59:31,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2020-07-20 21:59:31,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 556. [2020-07-20 21:59:31,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 556 states. [2020-07-20 21:59:31,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 785 transitions. [2020-07-20 21:59:31,156 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 785 transitions. Word has length 129 [2020-07-20 21:59:31,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 21:59:31,157 INFO L479 AbstractCegarLoop]: Abstraction has 556 states and 785 transitions. [2020-07-20 21:59:31,157 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 21:59:31,157 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 785 transitions. [2020-07-20 21:59:31,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-07-20 21:59:31,162 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 21:59:31,163 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 21:59:31,377 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:59:31,378 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 21:59:31,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 21:59:31,379 INFO L82 PathProgramCache]: Analyzing trace with hash -1525536778, now seen corresponding path program 1 times [2020-07-20 21:59:31,380 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 21:59:31,381 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1768555701] [2020-07-20 21:59:31,382 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:59:31,520 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 21:59:31,521 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 21:59:31,522 INFO L263 TraceCheckSpWp]: Trace formula consists of 364 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-20 21:59:31,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 21:59:31,563 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 21:59:31,563 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 21:59:31,564 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1768555701] [2020-07-20 21:59:31,564 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 21:59:31,564 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 21:59:31,564 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108012237] [2020-07-20 21:59:31,565 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 21:59:31,566 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 21:59:31,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 21:59:31,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 21:59:31,566 INFO L87 Difference]: Start difference. First operand 556 states and 785 transitions. Second operand 3 states. [2020-07-20 21:59:32,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 21:59:32,192 INFO L93 Difference]: Finished difference Result 1652 states and 2385 transitions. [2020-07-20 21:59:32,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 21:59:32,197 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 130 [2020-07-20 21:59:32,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 21:59:32,206 INFO L225 Difference]: With dead ends: 1652 [2020-07-20 21:59:32,206 INFO L226 Difference]: Without dead ends: 1102 [2020-07-20 21:59:32,209 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 21:59:32,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1102 states. [2020-07-20 21:59:32,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1102 to 1102. [2020-07-20 21:59:32,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1102 states. [2020-07-20 21:59:32,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1102 states to 1102 states and 1504 transitions. [2020-07-20 21:59:32,259 INFO L78 Accepts]: Start accepts. Automaton has 1102 states and 1504 transitions. Word has length 130 [2020-07-20 21:59:32,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 21:59:32,260 INFO L479 AbstractCegarLoop]: Abstraction has 1102 states and 1504 transitions. [2020-07-20 21:59:32,260 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 21:59:32,260 INFO L276 IsEmpty]: Start isEmpty. Operand 1102 states and 1504 transitions. [2020-07-20 21:59:32,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-07-20 21:59:32,268 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 21:59:32,269 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 21:59:32,482 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:59:32,483 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 21:59:32,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 21:59:32,484 INFO L82 PathProgramCache]: Analyzing trace with hash -423867461, now seen corresponding path program 1 times [2020-07-20 21:59:32,485 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 21:59:32,485 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1179104766] [2020-07-20 21:59:32,486 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:59:32,612 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 21:59:32,612 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 21:59:32,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 21:59:32,640 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 21:59:32,717 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 19 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 21:59:32,717 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 21:59:32,831 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 19 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 21:59:32,832 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1179104766] [2020-07-20 21:59:32,833 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 21:59:32,833 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2020-07-20 21:59:32,833 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509710557] [2020-07-20 21:59:32,837 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-20 21:59:32,837 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 21:59:32,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-20 21:59:32,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-07-20 21:59:32,838 INFO L87 Difference]: Start difference. First operand 1102 states and 1504 transitions. Second operand 8 states. [2020-07-20 21:59:34,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 21:59:34,798 INFO L93 Difference]: Finished difference Result 4220 states and 6124 transitions. [2020-07-20 21:59:34,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-20 21:59:34,799 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 138 [2020-07-20 21:59:34,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 21:59:34,830 INFO L225 Difference]: With dead ends: 4220 [2020-07-20 21:59:34,831 INFO L226 Difference]: Without dead ends: 3124 [2020-07-20 21:59:34,840 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 273 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2020-07-20 21:59:34,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3124 states. [2020-07-20 21:59:35,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3124 to 2349. [2020-07-20 21:59:35,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2349 states. [2020-07-20 21:59:35,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2349 states to 2349 states and 3071 transitions. [2020-07-20 21:59:35,038 INFO L78 Accepts]: Start accepts. Automaton has 2349 states and 3071 transitions. Word has length 138 [2020-07-20 21:59:35,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 21:59:35,040 INFO L479 AbstractCegarLoop]: Abstraction has 2349 states and 3071 transitions. [2020-07-20 21:59:35,041 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-20 21:59:35,041 INFO L276 IsEmpty]: Start isEmpty. Operand 2349 states and 3071 transitions. [2020-07-20 21:59:35,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-07-20 21:59:35,059 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 21:59:35,060 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 21:59:35,273 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:59:35,274 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 21:59:35,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 21:59:35,276 INFO L82 PathProgramCache]: Analyzing trace with hash 127065043, now seen corresponding path program 1 times [2020-07-20 21:59:35,276 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 21:59:35,276 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1856547329] [2020-07-20 21:59:35,277 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:59:35,431 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 21:59:35,431 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 21:59:35,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 21:59:35,437 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 21:59:35,539 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 34 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 21:59:35,539 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 21:59:35,631 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 34 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 21:59:35,632 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1856547329] [2020-07-20 21:59:35,632 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 21:59:35,632 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-07-20 21:59:35,633 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128098392] [2020-07-20 21:59:35,634 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-20 21:59:35,635 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 21:59:35,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-20 21:59:35,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-07-20 21:59:35,637 INFO L87 Difference]: Start difference. First operand 2349 states and 3071 transitions. Second operand 7 states. [2020-07-20 21:59:37,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 21:59:37,259 INFO L93 Difference]: Finished difference Result 7590 states and 10616 transitions. [2020-07-20 21:59:37,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-20 21:59:37,260 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 150 [2020-07-20 21:59:37,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 21:59:37,303 INFO L225 Difference]: With dead ends: 7590 [2020-07-20 21:59:37,303 INFO L226 Difference]: Without dead ends: 5251 [2020-07-20 21:59:37,312 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 295 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2020-07-20 21:59:37,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5251 states. [2020-07-20 21:59:37,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5251 to 4567. [2020-07-20 21:59:37,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4567 states. [2020-07-20 21:59:37,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4567 states to 4567 states and 5929 transitions. [2020-07-20 21:59:37,562 INFO L78 Accepts]: Start accepts. Automaton has 4567 states and 5929 transitions. Word has length 150 [2020-07-20 21:59:37,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 21:59:37,562 INFO L479 AbstractCegarLoop]: Abstraction has 4567 states and 5929 transitions. [2020-07-20 21:59:37,563 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-20 21:59:37,567 INFO L276 IsEmpty]: Start isEmpty. Operand 4567 states and 5929 transitions. [2020-07-20 21:59:37,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-07-20 21:59:37,584 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 21:59:37,585 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 21:59:37,799 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:59:37,800 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 21:59:37,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 21:59:37,800 INFO L82 PathProgramCache]: Analyzing trace with hash -763083429, now seen corresponding path program 1 times [2020-07-20 21:59:37,801 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 21:59:37,801 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1234934935] [2020-07-20 21:59:37,802 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:59:37,935 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 21:59:37,936 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 21:59:37,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 442 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 21:59:37,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 21:59:37,984 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-07-20 21:59:37,985 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 21:59:37,985 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1234934935] [2020-07-20 21:59:37,986 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 21:59:37,986 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 21:59:37,986 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74015318] [2020-07-20 21:59:37,987 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 21:59:37,987 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 21:59:37,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 21:59:37,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 21:59:37,997 INFO L87 Difference]: Start difference. First operand 4567 states and 5929 transitions. Second operand 3 states. [2020-07-20 21:59:38,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 21:59:38,688 INFO L93 Difference]: Finished difference Result 7887 states and 10249 transitions. [2020-07-20 21:59:38,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 21:59:38,688 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 154 [2020-07-20 21:59:38,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 21:59:38,724 INFO L225 Difference]: With dead ends: 7887 [2020-07-20 21:59:38,724 INFO L226 Difference]: Without dead ends: 4704 [2020-07-20 21:59:38,741 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 21:59:38,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4704 states. [2020-07-20 21:59:38,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4704 to 4428. [2020-07-20 21:59:38,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4428 states. [2020-07-20 21:59:38,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4428 states to 4428 states and 5614 transitions. [2020-07-20 21:59:38,908 INFO L78 Accepts]: Start accepts. Automaton has 4428 states and 5614 transitions. Word has length 154 [2020-07-20 21:59:38,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 21:59:38,908 INFO L479 AbstractCegarLoop]: Abstraction has 4428 states and 5614 transitions. [2020-07-20 21:59:38,909 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 21:59:38,909 INFO L276 IsEmpty]: Start isEmpty. Operand 4428 states and 5614 transitions. [2020-07-20 21:59:38,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-07-20 21:59:38,923 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 21:59:38,924 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 21:59:39,137 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:59:39,138 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 21:59:39,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 21:59:39,138 INFO L82 PathProgramCache]: Analyzing trace with hash -1873222613, now seen corresponding path program 1 times [2020-07-20 21:59:39,139 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 21:59:39,139 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [21149682] [2020-07-20 21:59:39,139 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:59:39,264 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 21:59:39,264 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 21:59:39,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 445 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 21:59:39,270 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 21:59:39,309 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-07-20 21:59:39,309 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 21:59:39,309 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [21149682] [2020-07-20 21:59:39,310 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 21:59:39,310 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 21:59:39,310 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344634353] [2020-07-20 21:59:39,311 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 21:59:39,311 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 21:59:39,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 21:59:39,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 21:59:39,312 INFO L87 Difference]: Start difference. First operand 4428 states and 5614 transitions. Second operand 3 states. [2020-07-20 21:59:39,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 21:59:39,986 INFO L93 Difference]: Finished difference Result 7893 states and 10016 transitions. [2020-07-20 21:59:39,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 21:59:39,986 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 155 [2020-07-20 21:59:39,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 21:59:40,007 INFO L225 Difference]: With dead ends: 7893 [2020-07-20 21:59:40,008 INFO L226 Difference]: Without dead ends: 4428 [2020-07-20 21:59:40,016 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 21:59:40,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4428 states. [2020-07-20 21:59:40,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4428 to 4428. [2020-07-20 21:59:40,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4428 states. [2020-07-20 21:59:40,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4428 states to 4428 states and 5434 transitions. [2020-07-20 21:59:40,138 INFO L78 Accepts]: Start accepts. Automaton has 4428 states and 5434 transitions. Word has length 155 [2020-07-20 21:59:40,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 21:59:40,139 INFO L479 AbstractCegarLoop]: Abstraction has 4428 states and 5434 transitions. [2020-07-20 21:59:40,139 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 21:59:40,139 INFO L276 IsEmpty]: Start isEmpty. Operand 4428 states and 5434 transitions. [2020-07-20 21:59:40,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-07-20 21:59:40,152 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 21:59:40,153 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 21:59:40,367 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:59:40,368 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 21:59:40,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 21:59:40,369 INFO L82 PathProgramCache]: Analyzing trace with hash 1256524215, now seen corresponding path program 1 times [2020-07-20 21:59:40,370 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 21:59:40,370 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [807640875] [2020-07-20 21:59:40,371 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:59:40,500 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 21:59:40,500 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 21:59:40,502 INFO L263 TraceCheckSpWp]: Trace formula consists of 445 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-20 21:59:40,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 21:59:40,548 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 45 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 21:59:40,548 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 21:59:40,626 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 45 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 21:59:40,627 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [807640875] [2020-07-20 21:59:40,627 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 21:59:40,627 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-07-20 21:59:40,628 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644921916] [2020-07-20 21:59:40,628 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-20 21:59:40,628 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 21:59:40,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-20 21:59:40,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-07-20 21:59:40,629 INFO L87 Difference]: Start difference. First operand 4428 states and 5434 transitions. Second operand 7 states. [2020-07-20 21:59:41,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 21:59:41,551 INFO L93 Difference]: Finished difference Result 8479 states and 10446 transitions. [2020-07-20 21:59:41,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-20 21:59:41,552 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 161 [2020-07-20 21:59:41,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 21:59:41,574 INFO L225 Difference]: With dead ends: 8479 [2020-07-20 21:59:41,574 INFO L226 Difference]: Without dead ends: 5014 [2020-07-20 21:59:41,589 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 317 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-07-20 21:59:41,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5014 states. [2020-07-20 21:59:41,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5014 to 4307. [2020-07-20 21:59:41,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4307 states. [2020-07-20 21:59:41,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4307 states to 4307 states and 5252 transitions. [2020-07-20 21:59:41,719 INFO L78 Accepts]: Start accepts. Automaton has 4307 states and 5252 transitions. Word has length 161 [2020-07-20 21:59:41,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 21:59:41,719 INFO L479 AbstractCegarLoop]: Abstraction has 4307 states and 5252 transitions. [2020-07-20 21:59:41,719 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-20 21:59:41,719 INFO L276 IsEmpty]: Start isEmpty. Operand 4307 states and 5252 transitions. [2020-07-20 21:59:41,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-07-20 21:59:41,732 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 21:59:41,733 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 21:59:41,945 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:59:41,946 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 21:59:41,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 21:59:41,947 INFO L82 PathProgramCache]: Analyzing trace with hash -494413009, now seen corresponding path program 1 times [2020-07-20 21:59:41,948 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 21:59:41,948 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1959758541] [2020-07-20 21:59:41,948 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:59:42,092 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 21:59:42,093 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 21:59:42,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 446 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-20 21:59:42,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 21:59:42,145 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 24 proven. 27 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-07-20 21:59:42,145 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 21:59:42,229 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 49 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-07-20 21:59:42,229 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1959758541] [2020-07-20 21:59:42,229 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 21:59:42,230 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2020-07-20 21:59:42,230 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129929743] [2020-07-20 21:59:42,231 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 21:59:42,231 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 21:59:42,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 21:59:42,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-20 21:59:42,231 INFO L87 Difference]: Start difference. First operand 4307 states and 5252 transitions. Second operand 5 states. [2020-07-20 21:59:42,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 21:59:42,931 INFO L93 Difference]: Finished difference Result 4315 states and 5263 transitions. [2020-07-20 21:59:42,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 21:59:42,932 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 165 [2020-07-20 21:59:42,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 21:59:42,953 INFO L225 Difference]: With dead ends: 4315 [2020-07-20 21:59:42,953 INFO L226 Difference]: Without dead ends: 4313 [2020-07-20 21:59:42,955 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 324 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-07-20 21:59:42,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4313 states. [2020-07-20 21:59:43,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4313 to 4023. [2020-07-20 21:59:43,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4023 states. [2020-07-20 21:59:43,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4023 states to 4023 states and 4905 transitions. [2020-07-20 21:59:43,127 INFO L78 Accepts]: Start accepts. Automaton has 4023 states and 4905 transitions. Word has length 165 [2020-07-20 21:59:43,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 21:59:43,128 INFO L479 AbstractCegarLoop]: Abstraction has 4023 states and 4905 transitions. [2020-07-20 21:59:43,128 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 21:59:43,128 INFO L276 IsEmpty]: Start isEmpty. Operand 4023 states and 4905 transitions. [2020-07-20 21:59:43,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2020-07-20 21:59:43,143 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 21:59:43,143 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 21:59:43,358 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:59:43,359 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 21:59:43,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 21:59:43,360 INFO L82 PathProgramCache]: Analyzing trace with hash 2102366411, now seen corresponding path program 1 times [2020-07-20 21:59:43,360 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 21:59:43,360 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2003471194] [2020-07-20 21:59:43,361 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:59:43,489 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 21:59:43,490 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 21:59:43,492 INFO L263 TraceCheckSpWp]: Trace formula consists of 464 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 21:59:43,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 21:59:43,533 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-07-20 21:59:43,533 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 21:59:43,533 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2003471194] [2020-07-20 21:59:43,534 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 21:59:43,534 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 21:59:43,534 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310586910] [2020-07-20 21:59:43,535 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 21:59:43,535 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 21:59:43,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 21:59:43,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 21:59:43,535 INFO L87 Difference]: Start difference. First operand 4023 states and 4905 transitions. Second operand 3 states. [2020-07-20 21:59:44,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 21:59:44,063 INFO L93 Difference]: Finished difference Result 4309 states and 5234 transitions. [2020-07-20 21:59:44,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 21:59:44,071 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 179 [2020-07-20 21:59:44,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 21:59:44,086 INFO L225 Difference]: With dead ends: 4309 [2020-07-20 21:59:44,086 INFO L226 Difference]: Without dead ends: 4307 [2020-07-20 21:59:44,088 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 21:59:44,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4307 states. [2020-07-20 21:59:44,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4307 to 4019. [2020-07-20 21:59:44,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4019 states. [2020-07-20 21:59:44,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4019 states to 4019 states and 4900 transitions. [2020-07-20 21:59:44,173 INFO L78 Accepts]: Start accepts. Automaton has 4019 states and 4900 transitions. Word has length 179 [2020-07-20 21:59:44,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 21:59:44,174 INFO L479 AbstractCegarLoop]: Abstraction has 4019 states and 4900 transitions. [2020-07-20 21:59:44,174 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 21:59:44,174 INFO L276 IsEmpty]: Start isEmpty. Operand 4019 states and 4900 transitions. [2020-07-20 21:59:44,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-07-20 21:59:44,189 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 21:59:44,190 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 21:59:44,404 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:59:44,405 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 21:59:44,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 21:59:44,405 INFO L82 PathProgramCache]: Analyzing trace with hash -853384892, now seen corresponding path program 1 times [2020-07-20 21:59:44,406 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 21:59:44,406 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1086581733] [2020-07-20 21:59:44,406 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:59:44,567 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 21:59:44,567 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 21:59:44,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 551 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-20 21:59:44,573 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 21:59:44,687 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 120 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-07-20 21:59:44,687 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 21:59:44,809 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 120 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-07-20 21:59:44,809 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1086581733] [2020-07-20 21:59:44,809 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 21:59:44,809 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-07-20 21:59:44,810 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459343369] [2020-07-20 21:59:44,811 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-20 21:59:44,811 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 21:59:44,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-20 21:59:44,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-07-20 21:59:44,812 INFO L87 Difference]: Start difference. First operand 4019 states and 4900 transitions. Second operand 7 states. [2020-07-20 21:59:46,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 21:59:46,328 INFO L93 Difference]: Finished difference Result 6857 states and 8402 transitions. [2020-07-20 21:59:46,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-20 21:59:46,329 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 212 [2020-07-20 21:59:46,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 21:59:46,330 INFO L225 Difference]: With dead ends: 6857 [2020-07-20 21:59:46,330 INFO L226 Difference]: Without dead ends: 0 [2020-07-20 21:59:46,345 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 427 GetRequests, 420 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-07-20 21:59:46,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-20 21:59:46,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-20 21:59:46,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-20 21:59:46,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-20 21:59:46,346 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 212 [2020-07-20 21:59:46,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 21:59:46,347 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-20 21:59:46,347 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-20 21:59:46,347 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-20 21:59:46,347 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-20 21:59:46,561 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:59:46,565 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-20 21:59:47,513 WARN L193 SmtUtils]: Spent 402.00 ms on a formula simplification. DAG size of input: 225 DAG size of output: 133 [2020-07-20 21:59:47,870 WARN L193 SmtUtils]: Spent 355.00 ms on a formula simplification. DAG size of input: 225 DAG size of output: 133 [2020-07-20 21:59:49,615 WARN L193 SmtUtils]: Spent 1.65 s on a formula simplification. DAG size of input: 170 DAG size of output: 97 [2020-07-20 21:59:50,497 WARN L193 SmtUtils]: Spent 862.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 61 [2020-07-20 21:59:51,348 WARN L193 SmtUtils]: Spent 849.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 61 [2020-07-20 21:59:51,353 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-20 21:59:51,353 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)|) (= ~a7~0 |old(~a7~0)|) (= ~a21~0 |old(~a21~0)|)) [2020-07-20 21:59:51,353 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-20 21:59:51,354 INFO L268 CegarLoopResult]: For program point L333(lines 333 390) no Hoare annotation was computed. [2020-07-20 21:59:51,354 INFO L268 CegarLoopResult]: For program point L102(lines 102 390) no Hoare annotation was computed. [2020-07-20 21:59:51,354 INFO L268 CegarLoopResult]: For program point L565-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 21:59:51,354 INFO L268 CegarLoopResult]: For program point L532-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 21:59:51,354 INFO L268 CegarLoopResult]: For program point L499-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 21:59:51,354 INFO L268 CegarLoopResult]: For program point L466-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 21:59:51,354 INFO L268 CegarLoopResult]: For program point L433-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 21:59:51,354 INFO L268 CegarLoopResult]: For program point L400-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 21:59:51,354 INFO L268 CegarLoopResult]: For program point L268(lines 268 390) no Hoare annotation was computed. [2020-07-20 21:59:51,354 INFO L268 CegarLoopResult]: For program point L136(lines 136 390) no Hoare annotation was computed. [2020-07-20 21:59:51,354 INFO L268 CegarLoopResult]: For program point L566(line 566) no Hoare annotation was computed. [2020-07-20 21:59:51,355 INFO L268 CegarLoopResult]: For program point L533(line 533) no Hoare annotation was computed. [2020-07-20 21:59:51,355 INFO L268 CegarLoopResult]: For program point L500(line 500) no Hoare annotation was computed. [2020-07-20 21:59:51,355 INFO L268 CegarLoopResult]: For program point L467(line 467) no Hoare annotation was computed. [2020-07-20 21:59:51,355 INFO L268 CegarLoopResult]: For program point L434(line 434) no Hoare annotation was computed. [2020-07-20 21:59:51,355 INFO L268 CegarLoopResult]: For program point L401(line 401) no Hoare annotation was computed. [2020-07-20 21:59:51,355 INFO L268 CegarLoopResult]: For program point L203(lines 203 390) no Hoare annotation was computed. [2020-07-20 21:59:51,356 INFO L268 CegarLoopResult]: For program point L72(lines 72 390) no Hoare annotation was computed. [2020-07-20 21:59:51,356 INFO L268 CegarLoopResult]: For program point L568-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 21:59:51,356 INFO L268 CegarLoopResult]: For program point L535-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 21:59:51,356 INFO L268 CegarLoopResult]: For program point L502-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 21:59:51,356 INFO L268 CegarLoopResult]: For program point L469-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 21:59:51,356 INFO L268 CegarLoopResult]: For program point L436-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 21:59:51,356 INFO L268 CegarLoopResult]: For program point L403-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 21:59:51,356 INFO L268 CegarLoopResult]: For program point L337(lines 337 390) no Hoare annotation was computed. [2020-07-20 21:59:51,357 INFO L268 CegarLoopResult]: For program point L238(lines 238 390) no Hoare annotation was computed. [2020-07-20 21:59:51,357 INFO L268 CegarLoopResult]: For program point L569(line 569) no Hoare annotation was computed. [2020-07-20 21:59:51,357 INFO L268 CegarLoopResult]: For program point L536(line 536) no Hoare annotation was computed. [2020-07-20 21:59:51,357 INFO L268 CegarLoopResult]: For program point L503(line 503) no Hoare annotation was computed. [2020-07-20 21:59:51,357 INFO L268 CegarLoopResult]: For program point L470(line 470) no Hoare annotation was computed. [2020-07-20 21:59:51,357 INFO L268 CegarLoopResult]: For program point L437(line 437) no Hoare annotation was computed. [2020-07-20 21:59:51,357 INFO L268 CegarLoopResult]: For program point L404(line 404) no Hoare annotation was computed. [2020-07-20 21:59:51,357 INFO L268 CegarLoopResult]: For program point L173(lines 173 390) no Hoare annotation was computed. [2020-07-20 21:59:51,357 INFO L268 CegarLoopResult]: For program point L140(lines 140 390) no Hoare annotation was computed. [2020-07-20 21:59:51,357 INFO L268 CegarLoopResult]: For program point L372(lines 372 390) no Hoare annotation was computed. [2020-07-20 21:59:51,357 INFO L268 CegarLoopResult]: For program point calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION(line 515) no Hoare annotation was computed. [2020-07-20 21:59:51,358 INFO L268 CegarLoopResult]: For program point L306(lines 306 390) no Hoare annotation was computed. [2020-07-20 21:59:51,358 INFO L268 CegarLoopResult]: For program point L273(lines 273 390) no Hoare annotation was computed. [2020-07-20 21:59:51,358 INFO L268 CegarLoopResult]: For program point L108(lines 108 390) no Hoare annotation was computed. [2020-07-20 21:59:51,358 INFO L268 CegarLoopResult]: For program point L571-1(lines 571 573) no Hoare annotation was computed. [2020-07-20 21:59:51,358 INFO L268 CegarLoopResult]: For program point L538-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 21:59:51,358 INFO L268 CegarLoopResult]: For program point L505-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 21:59:51,358 INFO L268 CegarLoopResult]: For program point L472-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 21:59:51,358 INFO L268 CegarLoopResult]: For program point L439-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 21:59:51,359 INFO L268 CegarLoopResult]: For program point L406-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 21:59:51,359 INFO L268 CegarLoopResult]: For program point L208(lines 208 390) no Hoare annotation was computed. [2020-07-20 21:59:51,359 INFO L268 CegarLoopResult]: For program point L43(lines 43 390) no Hoare annotation was computed. [2020-07-20 21:59:51,359 INFO L268 CegarLoopResult]: For program point L572(line 572) no Hoare annotation was computed. [2020-07-20 21:59:51,359 INFO L268 CegarLoopResult]: For program point L539(line 539) no Hoare annotation was computed. [2020-07-20 21:59:51,359 INFO L268 CegarLoopResult]: For program point L506(line 506) no Hoare annotation was computed. [2020-07-20 21:59:51,359 INFO L268 CegarLoopResult]: For program point L473(line 473) no Hoare annotation was computed. [2020-07-20 21:59:51,359 INFO L268 CegarLoopResult]: For program point L440(line 440) no Hoare annotation was computed. [2020-07-20 21:59:51,360 INFO L268 CegarLoopResult]: For program point L407(line 407) no Hoare annotation was computed. [2020-07-20 21:59:51,360 INFO L268 CegarLoopResult]: For program point L144(lines 144 390) no Hoare annotation was computed. [2020-07-20 21:59:51,360 INFO L268 CegarLoopResult]: For program point L541-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 21:59:51,360 INFO L268 CegarLoopResult]: For program point L508-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 21:59:51,360 INFO L268 CegarLoopResult]: For program point L475-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 21:59:51,360 INFO L268 CegarLoopResult]: For program point L442-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 21:59:51,361 INFO L268 CegarLoopResult]: For program point L409-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 21:59:51,362 INFO L268 CegarLoopResult]: For program point L178(lines 178 390) no Hoare annotation was computed. [2020-07-20 21:59:51,362 INFO L268 CegarLoopResult]: For program point L542(line 542) no Hoare annotation was computed. [2020-07-20 21:59:51,362 INFO L268 CegarLoopResult]: For program point L509(line 509) no Hoare annotation was computed. [2020-07-20 21:59:51,362 INFO L268 CegarLoopResult]: For program point L476(line 476) no Hoare annotation was computed. [2020-07-20 21:59:51,362 INFO L268 CegarLoopResult]: For program point L443(line 443) no Hoare annotation was computed. [2020-07-20 21:59:51,362 INFO L268 CegarLoopResult]: For program point L410(line 410) no Hoare annotation was computed. [2020-07-20 21:59:51,362 INFO L268 CegarLoopResult]: For program point L377(lines 377 390) no Hoare annotation was computed. [2020-07-20 21:59:51,362 INFO L268 CegarLoopResult]: For program point L278(lines 278 390) no Hoare annotation was computed. [2020-07-20 21:59:51,363 INFO L268 CegarLoopResult]: For program point L245(lines 245 390) no Hoare annotation was computed. [2020-07-20 21:59:51,363 INFO L268 CegarLoopResult]: For program point L80(lines 80 390) no Hoare annotation was computed. [2020-07-20 21:59:51,363 INFO L268 CegarLoopResult]: For program point L345(lines 345 390) no Hoare annotation was computed. [2020-07-20 21:59:51,363 INFO L268 CegarLoopResult]: For program point L312(lines 312 390) no Hoare annotation was computed. [2020-07-20 21:59:51,363 INFO L268 CegarLoopResult]: For program point L114(lines 114 390) no Hoare annotation was computed. [2020-07-20 21:59:51,363 INFO L268 CegarLoopResult]: For program point L544-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 21:59:51,363 INFO L268 CegarLoopResult]: For program point L511-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 21:59:51,363 INFO L268 CegarLoopResult]: For program point L478-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 21:59:51,363 INFO L268 CegarLoopResult]: For program point L445-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 21:59:51,363 INFO L268 CegarLoopResult]: For program point L412-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 21:59:51,363 INFO L268 CegarLoopResult]: For program point L214(lines 214 390) no Hoare annotation was computed. [2020-07-20 21:59:51,363 INFO L268 CegarLoopResult]: For program point L148(lines 148 390) no Hoare annotation was computed. [2020-07-20 21:59:51,363 INFO L268 CegarLoopResult]: For program point L49(lines 49 390) no Hoare annotation was computed. [2020-07-20 21:59:51,364 INFO L268 CegarLoopResult]: For program point L545(line 545) no Hoare annotation was computed. [2020-07-20 21:59:51,364 INFO L268 CegarLoopResult]: For program point L512(line 512) no Hoare annotation was computed. [2020-07-20 21:59:51,364 INFO L268 CegarLoopResult]: For program point L479(line 479) no Hoare annotation was computed. [2020-07-20 21:59:51,364 INFO L268 CegarLoopResult]: For program point L446(line 446) no Hoare annotation was computed. [2020-07-20 21:59:51,364 INFO L268 CegarLoopResult]: For program point L413(line 413) no Hoare annotation was computed. [2020-07-20 21:59:51,364 INFO L268 CegarLoopResult]: For program point L84(lines 84 390) no Hoare annotation was computed. [2020-07-20 21:59:51,364 INFO L268 CegarLoopResult]: For program point calculate_outputFINAL(lines 30 575) no Hoare annotation was computed. [2020-07-20 21:59:51,364 INFO L268 CegarLoopResult]: For program point calculate_outputEXIT(lines 30 575) no Hoare annotation was computed. [2020-07-20 21:59:51,364 INFO L268 CegarLoopResult]: For program point L547-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 21:59:51,364 INFO L268 CegarLoopResult]: For program point L514-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 21:59:51,364 INFO L268 CegarLoopResult]: For program point L481-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 21:59:51,364 INFO L268 CegarLoopResult]: For program point L448-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 21:59:51,364 INFO L268 CegarLoopResult]: For program point L382(lines 382 390) no Hoare annotation was computed. [2020-07-20 21:59:51,365 INFO L268 CegarLoopResult]: For program point L415-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 21:59:51,365 INFO L268 CegarLoopResult]: For program point L316(lines 316 390) no Hoare annotation was computed. [2020-07-20 21:59:51,365 INFO L268 CegarLoopResult]: For program point L250(lines 250 390) no Hoare annotation was computed. [2020-07-20 21:59:51,365 INFO L268 CegarLoopResult]: For program point L548(line 548) no Hoare annotation was computed. [2020-07-20 21:59:51,365 INFO L268 CegarLoopResult]: For program point L515(line 515) no Hoare annotation was computed. [2020-07-20 21:59:51,365 INFO L268 CegarLoopResult]: For program point L482(line 482) no Hoare annotation was computed. [2020-07-20 21:59:51,365 INFO L268 CegarLoopResult]: For program point L449(line 449) no Hoare annotation was computed. [2020-07-20 21:59:51,365 INFO L268 CegarLoopResult]: For program point L416(line 416) no Hoare annotation was computed. [2020-07-20 21:59:51,365 INFO L268 CegarLoopResult]: For program point L218(lines 218 390) no Hoare annotation was computed. [2020-07-20 21:59:51,365 INFO L268 CegarLoopResult]: For program point L152(lines 152 390) no Hoare annotation was computed. [2020-07-20 21:59:51,365 INFO L268 CegarLoopResult]: For program point L119(lines 119 390) no Hoare annotation was computed. [2020-07-20 21:59:51,366 INFO L268 CegarLoopResult]: For program point L318(lines 318 390) no Hoare annotation was computed. [2020-07-20 21:59:51,366 INFO L268 CegarLoopResult]: For program point L186(lines 186 390) no Hoare annotation was computed. [2020-07-20 21:59:51,366 INFO L268 CegarLoopResult]: For program point L54(lines 54 390) no Hoare annotation was computed. [2020-07-20 21:59:51,366 INFO L268 CegarLoopResult]: For program point L550-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 21:59:51,366 INFO L268 CegarLoopResult]: For program point L517-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 21:59:51,366 INFO L268 CegarLoopResult]: For program point L484-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 21:59:51,366 INFO L268 CegarLoopResult]: For program point L451-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 21:59:51,366 INFO L268 CegarLoopResult]: For program point L418-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 21:59:51,366 INFO L268 CegarLoopResult]: For program point L286(lines 286 390) no Hoare annotation was computed. [2020-07-20 21:59:51,367 INFO L268 CegarLoopResult]: For program point L551(line 551) no Hoare annotation was computed. [2020-07-20 21:59:51,367 INFO L268 CegarLoopResult]: For program point L518(line 518) no Hoare annotation was computed. [2020-07-20 21:59:51,367 INFO L268 CegarLoopResult]: For program point L485(line 485) no Hoare annotation was computed. [2020-07-20 21:59:51,367 INFO L268 CegarLoopResult]: For program point L452(line 452) no Hoare annotation was computed. [2020-07-20 21:59:51,367 INFO L268 CegarLoopResult]: For program point L419(line 419) no Hoare annotation was computed. [2020-07-20 21:59:51,367 INFO L268 CegarLoopResult]: For program point L353(lines 353 390) no Hoare annotation was computed. [2020-07-20 21:59:51,367 INFO L268 CegarLoopResult]: For program point L189(lines 189 390) no Hoare annotation was computed. [2020-07-20 21:59:51,368 INFO L268 CegarLoopResult]: For program point L553-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 21:59:51,368 INFO L268 CegarLoopResult]: For program point L520-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 21:59:51,369 INFO L268 CegarLoopResult]: For program point L487-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 21:59:51,369 INFO L268 CegarLoopResult]: For program point L454-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 21:59:51,369 INFO L268 CegarLoopResult]: For program point L421-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 21:59:51,369 INFO L268 CegarLoopResult]: For program point L355(lines 355 390) no Hoare annotation was computed. [2020-07-20 21:59:51,369 INFO L268 CegarLoopResult]: For program point L256(lines 256 390) no Hoare annotation was computed. [2020-07-20 21:59:51,369 INFO L268 CegarLoopResult]: For program point L223(lines 223 390) no Hoare annotation was computed. [2020-07-20 21:59:51,369 INFO L268 CegarLoopResult]: For program point L124(lines 124 390) no Hoare annotation was computed. [2020-07-20 21:59:51,369 INFO L268 CegarLoopResult]: For program point L554(line 554) no Hoare annotation was computed. [2020-07-20 21:59:51,370 INFO L268 CegarLoopResult]: For program point L521(line 521) no Hoare annotation was computed. [2020-07-20 21:59:51,370 INFO L268 CegarLoopResult]: For program point L488(line 488) no Hoare annotation was computed. [2020-07-20 21:59:51,370 INFO L268 CegarLoopResult]: For program point L455(line 455) no Hoare annotation was computed. [2020-07-20 21:59:51,370 INFO L268 CegarLoopResult]: For program point L422(line 422) no Hoare annotation was computed. [2020-07-20 21:59:51,370 INFO L268 CegarLoopResult]: For program point L92(lines 92 390) no Hoare annotation was computed. [2020-07-20 21:59:51,370 INFO L264 CegarLoopResult]: At program point calculate_outputENTRY(lines 30 575) the Hoare annotation is: (let ((.cse0 (not (= 1 |old(~a20~0)|))) (.cse21 (not (<= |old(~a8~0)| 13))) (.cse6 (not (<= |old(~a16~0)| 5))) (.cse24 (not (< |old(~a8~0)| 15))) (.cse13 (not (<= 5 |old(~a16~0)|))) (.cse3 (= 1 ~a20~0)) (.cse7 (<= ~a8~0 |old(~a8~0)|)) (.cse19 (<= ~a16~0 |old(~a16~0)|)) (.cse9 (<= ~a16~0 5)) (.cse11 (<= 5 ~a16~0))) (let ((.cse8 (= 1 ~a7~0)) (.cse20 (not (<= |old(~a21~0)| 0))) (.cse5 (not (= 1 |old(~a7~0)|))) (.cse23 (= ~a7~0 |old(~a7~0)|)) (.cse16 (= 1 ~a21~0)) (.cse17 (or (and .cse7 .cse19 (<= ~a8~0 13) .cse11 .cse3) (and .cse7 .cse19 .cse9 .cse11 (< ~a8~0 15)))) (.cse15 (<= 14 ~a8~0)) (.cse12 (= ~a21~0 |old(~a21~0)|)) (.cse18 (not (<= 14 |old(~a8~0)|))) (.cse22 (not (<= |old(~a16~0)| 4))) (.cse14 (and (or .cse0 .cse21) (or .cse6 .cse24 .cse13))) (.cse1 (not (<= 15 |old(~a8~0)|))) (.cse2 (not (<= |old(~a7~0)| 0))) (.cse10 (<= 15 ~a8~0)) (.cse4 (not (= 1 |old(~a21~0)|)))) (and (or .cse0 .cse1 .cse2 .cse3 .cse4) (or .cse1 .cse5 .cse6 (and .cse7 .cse8 .cse9 .cse10 .cse11 .cse12) .cse13 .cse4) (or .cse14 (and .cse15 .cse16 .cse12 .cse17) .cse18 .cse4) (or (and .cse7 .cse19 .cse8 .cse12) .cse5 .cse20 .cse21 .cse22) (or (and .cse7 .cse19 .cse23 .cse11 .cse12) .cse1 .cse2 .cse13 .cse4) (or .cse1 .cse5 (and .cse7 .cse19 .cse8 .cse10 .cse12) .cse22 .cse4) (or (and .cse8 .cse12 .cse17) .cse14 .cse20 .cse5 .cse13) (or (and .cse23 (or (and .cse7 .cse19 .cse3 .cse12) (and .cse19 .cse7 (<= ~a7~0 0) .cse9 .cse12) (and .cse16 .cse12 .cse17) (and .cse7 .cse19 .cse15 .cse12))) (and (or .cse18 .cse22 .cse24 .cse4) (or .cse2 .cse6 .cse4) (or .cse14 .cse4))) (or .cse1 .cse2 .cse10 .cse4)))) [2020-07-20 21:59:51,371 INFO L268 CegarLoopResult]: For program point L324(lines 324 390) no Hoare annotation was computed. [2020-07-20 21:59:51,371 INFO L268 CegarLoopResult]: For program point L556-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 21:59:51,371 INFO L268 CegarLoopResult]: For program point L523-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 21:59:51,371 INFO L268 CegarLoopResult]: For program point L490-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 21:59:51,371 INFO L268 CegarLoopResult]: For program point L457-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 21:59:51,371 INFO L268 CegarLoopResult]: For program point L391(lines 391 393) no Hoare annotation was computed. [2020-07-20 21:59:51,371 INFO L268 CegarLoopResult]: For program point L424-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 21:59:51,371 INFO L268 CegarLoopResult]: For program point L391-2(lines 30 575) no Hoare annotation was computed. [2020-07-20 21:59:51,372 INFO L268 CegarLoopResult]: For program point L292(lines 292 390) no Hoare annotation was computed. [2020-07-20 21:59:51,372 INFO L268 CegarLoopResult]: For program point L160(lines 160 390) no Hoare annotation was computed. [2020-07-20 21:59:51,372 INFO L268 CegarLoopResult]: For program point L557(line 557) no Hoare annotation was computed. [2020-07-20 21:59:51,372 INFO L268 CegarLoopResult]: For program point L524(line 524) no Hoare annotation was computed. [2020-07-20 21:59:51,372 INFO L268 CegarLoopResult]: For program point L491(line 491) no Hoare annotation was computed. [2020-07-20 21:59:51,372 INFO L268 CegarLoopResult]: For program point L458(line 458) no Hoare annotation was computed. [2020-07-20 21:59:51,372 INFO L268 CegarLoopResult]: For program point L425(line 425) no Hoare annotation was computed. [2020-07-20 21:59:51,372 INFO L268 CegarLoopResult]: For program point L392(line 392) no Hoare annotation was computed. [2020-07-20 21:59:51,372 INFO L268 CegarLoopResult]: For program point L194(lines 194 390) no Hoare annotation was computed. [2020-07-20 21:59:51,372 INFO L268 CegarLoopResult]: For program point L62(lines 62 390) no Hoare annotation was computed. [2020-07-20 21:59:51,373 INFO L268 CegarLoopResult]: For program point L261(lines 261 390) no Hoare annotation was computed. [2020-07-20 21:59:51,373 INFO L268 CegarLoopResult]: For program point L129(lines 129 390) no Hoare annotation was computed. [2020-07-20 21:59:51,373 INFO L268 CegarLoopResult]: For program point L559-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 21:59:51,373 INFO L268 CegarLoopResult]: For program point L526-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 21:59:51,373 INFO L268 CegarLoopResult]: For program point L493-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 21:59:51,373 INFO L268 CegarLoopResult]: For program point L460-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 21:59:51,373 INFO L268 CegarLoopResult]: For program point L427-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 21:59:51,373 INFO L268 CegarLoopResult]: For program point L361(lines 361 390) no Hoare annotation was computed. [2020-07-20 21:59:51,374 INFO L268 CegarLoopResult]: For program point L394-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 21:59:51,374 INFO L268 CegarLoopResult]: For program point L97(lines 97 390) no Hoare annotation was computed. [2020-07-20 21:59:51,374 INFO L268 CegarLoopResult]: For program point L31(lines 31 390) no Hoare annotation was computed. [2020-07-20 21:59:51,374 INFO L268 CegarLoopResult]: For program point L560(line 560) no Hoare annotation was computed. [2020-07-20 21:59:51,374 INFO L268 CegarLoopResult]: For program point L527(line 527) no Hoare annotation was computed. [2020-07-20 21:59:51,374 INFO L268 CegarLoopResult]: For program point L494(line 494) no Hoare annotation was computed. [2020-07-20 21:59:51,374 INFO L268 CegarLoopResult]: For program point L461(line 461) no Hoare annotation was computed. [2020-07-20 21:59:51,374 INFO L268 CegarLoopResult]: For program point L428(line 428) no Hoare annotation was computed. [2020-07-20 21:59:51,374 INFO L268 CegarLoopResult]: For program point L395(line 395) no Hoare annotation was computed. [2020-07-20 21:59:51,375 INFO L268 CegarLoopResult]: For program point L329(lines 329 390) no Hoare annotation was computed. [2020-07-20 21:59:51,375 INFO L268 CegarLoopResult]: For program point L197(lines 197 390) no Hoare annotation was computed. [2020-07-20 21:59:51,375 INFO L268 CegarLoopResult]: For program point L65(lines 65 390) no Hoare annotation was computed. [2020-07-20 21:59:51,375 INFO L268 CegarLoopResult]: For program point L363(lines 363 390) no Hoare annotation was computed. [2020-07-20 21:59:51,375 INFO L268 CegarLoopResult]: For program point L231(lines 231 390) no Hoare annotation was computed. [2020-07-20 21:59:51,375 INFO L268 CegarLoopResult]: For program point L165(lines 165 390) no Hoare annotation was computed. [2020-07-20 21:59:51,375 INFO L268 CegarLoopResult]: For program point L562-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 21:59:51,375 INFO L268 CegarLoopResult]: For program point L529-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 21:59:51,375 INFO L268 CegarLoopResult]: For program point L496-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 21:59:51,376 INFO L268 CegarLoopResult]: For program point L463-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 21:59:51,376 INFO L268 CegarLoopResult]: For program point L430-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 21:59:51,376 INFO L268 CegarLoopResult]: For program point L397-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 21:59:51,376 INFO L268 CegarLoopResult]: For program point L265(lines 265 390) no Hoare annotation was computed. [2020-07-20 21:59:51,376 INFO L268 CegarLoopResult]: For program point L563(line 563) no Hoare annotation was computed. [2020-07-20 21:59:51,376 INFO L268 CegarLoopResult]: For program point L530(line 530) no Hoare annotation was computed. [2020-07-20 21:59:51,376 INFO L268 CegarLoopResult]: For program point L497(line 497) no Hoare annotation was computed. [2020-07-20 21:59:51,376 INFO L268 CegarLoopResult]: For program point L464(line 464) no Hoare annotation was computed. [2020-07-20 21:59:51,376 INFO L268 CegarLoopResult]: For program point L431(line 431) no Hoare annotation was computed. [2020-07-20 21:59:51,377 INFO L268 CegarLoopResult]: For program point L398(line 398) no Hoare annotation was computed. [2020-07-20 21:59:51,377 INFO L268 CegarLoopResult]: For program point L365(lines 365 390) no Hoare annotation was computed. [2020-07-20 21:59:51,377 INFO L268 CegarLoopResult]: For program point L299(lines 299 390) no Hoare annotation was computed. [2020-07-20 21:59:51,377 INFO L268 CegarLoopResult]: For program point L35(lines 35 390) no Hoare annotation was computed. [2020-07-20 21:59:51,377 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-20 21:59:51,377 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) (= 1 ~a21~0) (= 1 ~a20~0)) [2020-07-20 21:59:51,377 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-20 21:59:51,377 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-20 21:59:51,378 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 577 594) the Hoare annotation is: (or (not (= 1 |old(~a20~0)|)) (not (<= 15 |old(~a8~0)|)) (and (<= ~a8~0 |old(~a8~0)|) (= ~a7~0 |old(~a7~0)|) (<= ~a16~0 5) (<= 15 ~a8~0) (<= 5 ~a16~0) (= 1 ~a20~0) (= ~a21~0 |old(~a21~0)|)) (not (<= |old(~a7~0)| 0)) (not (<= |old(~a16~0)| 5)) (not (<= 5 |old(~a16~0)|)) (not (= 1 |old(~a21~0)|))) [2020-07-20 21:59:51,378 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 577 594) no Hoare annotation was computed. [2020-07-20 21:59:51,378 INFO L264 CegarLoopResult]: At program point L591(line 591) the Hoare annotation is: (let ((.cse11 (<= ~a16~0 5)) (.cse4 (< ~a8~0 15)) (.cse7 (<= ~a8~0 13)) (.cse12 (<= 5 ~a16~0)) (.cse9 (= 1 ~a20~0))) (let ((.cse3 (<= ~a16~0 4)) (.cse1 (<= 15 ~a8~0)) (.cse2 (= 1 ~a21~0)) (.cse10 (<= ~a7~0 0)) (.cse6 (= ~a21~0 |old(~a21~0)|)) (.cse0 (= 1 ~a7~0)) (.cse8 (<= ~a21~0 0)) (.cse5 (or (and .cse11 .cse12 .cse4) (and .cse7 .cse12 .cse9)))) (or (and .cse0 .cse1 .cse2 .cse3) (and (<= 14 ~a8~0) .cse2 .cse4 .cse3) (and .cse5 .cse6) (not (<= |old(~a7~0)| 0)) (not (<= 5 |old(~a16~0)|)) (and .cse7 .cse0 .cse8 .cse3) (not (= 1 |old(~a20~0)|)) (not (<= 15 |old(~a8~0)|)) (and .cse7 .cse2 .cse9) (and .cse10 .cse1 .cse2) (not (<= |old(~a16~0)| 5)) (and .cse0 .cse11 .cse12 .cse2) (and .cse10 .cse11 .cse6) (not (= 1 |old(~a21~0)|)) (and .cse0 .cse8 .cse5)))) [2020-07-20 21:59:51,378 INFO L268 CegarLoopResult]: For program point L591-1(line 591) no Hoare annotation was computed. [2020-07-20 21:59:51,378 INFO L268 CegarLoopResult]: For program point L588(line 588) no Hoare annotation was computed. [2020-07-20 21:59:51,379 INFO L264 CegarLoopResult]: At program point L583-2(lines 583 593) the Hoare annotation is: (let ((.cse11 (<= ~a16~0 5)) (.cse4 (< ~a8~0 15)) (.cse7 (<= ~a8~0 13)) (.cse12 (<= 5 ~a16~0)) (.cse9 (= 1 ~a20~0))) (let ((.cse3 (<= ~a16~0 4)) (.cse1 (<= 15 ~a8~0)) (.cse2 (= 1 ~a21~0)) (.cse10 (<= ~a7~0 0)) (.cse6 (= ~a21~0 |old(~a21~0)|)) (.cse0 (= 1 ~a7~0)) (.cse8 (<= ~a21~0 0)) (.cse5 (or (and .cse11 .cse12 .cse4) (and .cse7 .cse12 .cse9)))) (or (and .cse0 .cse1 .cse2 .cse3) (and (<= 14 ~a8~0) .cse2 .cse4 .cse3) (and .cse5 .cse6) (not (<= |old(~a7~0)| 0)) (not (<= 5 |old(~a16~0)|)) (and .cse7 .cse0 .cse8 .cse3) (not (= 1 |old(~a20~0)|)) (not (<= 15 |old(~a8~0)|)) (and .cse7 .cse2 .cse9) (and .cse10 .cse1 .cse2) (not (<= |old(~a16~0)| 5)) (and .cse0 .cse11 .cse12 .cse2) (and .cse10 .cse11 .cse6) (not (= 1 |old(~a21~0)|)) (and .cse0 .cse8 .cse5)))) [2020-07-20 21:59:51,379 INFO L268 CegarLoopResult]: For program point L583-3(lines 577 594) no Hoare annotation was computed. [2020-07-20 21:59:51,423 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 09:59:51 BoogieIcfgContainer [2020-07-20 21:59:51,423 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 21:59:51,425 INFO L168 Benchmark]: Toolchain (without parser) took 25804.69 ms. Allocated memory was 142.1 MB in the beginning and 534.8 MB in the end (delta: 392.7 MB). Free memory was 98.2 MB in the beginning and 169.4 MB in the end (delta: -71.2 MB). Peak memory consumption was 411.4 MB. Max. memory is 7.1 GB. [2020-07-20 21:59:51,426 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 142.1 MB. Free memory was 118.5 MB in the beginning and 118.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-20 21:59:51,427 INFO L168 Benchmark]: CACSL2BoogieTranslator took 820.39 ms. Allocated memory was 142.1 MB in the beginning and 203.9 MB in the end (delta: 61.9 MB). Free memory was 97.8 MB in the beginning and 169.7 MB in the end (delta: -71.9 MB). Peak memory consumption was 30.7 MB. Max. memory is 7.1 GB. [2020-07-20 21:59:51,427 INFO L168 Benchmark]: Boogie Preprocessor took 136.05 ms. Allocated memory is still 203.9 MB. Free memory was 169.7 MB in the beginning and 164.6 MB in the end (delta: 5.1 MB). Peak memory consumption was 5.1 MB. Max. memory is 7.1 GB. [2020-07-20 21:59:51,428 INFO L168 Benchmark]: RCFGBuilder took 1412.24 ms. Allocated memory was 203.9 MB in the beginning and 233.8 MB in the end (delta: 29.9 MB). Free memory was 164.6 MB in the beginning and 179.3 MB in the end (delta: -14.7 MB). Peak memory consumption was 85.5 MB. Max. memory is 7.1 GB. [2020-07-20 21:59:51,429 INFO L168 Benchmark]: TraceAbstraction took 23428.08 ms. Allocated memory was 233.8 MB in the beginning and 534.8 MB in the end (delta: 300.9 MB). Free memory was 179.3 MB in the beginning and 169.4 MB in the end (delta: 9.9 MB). Peak memory consumption was 400.8 MB. Max. memory is 7.1 GB. [2020-07-20 21:59:51,432 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 142.1 MB. Free memory was 118.5 MB in the beginning and 118.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 820.39 ms. Allocated memory was 142.1 MB in the beginning and 203.9 MB in the end (delta: 61.9 MB). Free memory was 97.8 MB in the beginning and 169.7 MB in the end (delta: -71.9 MB). Peak memory consumption was 30.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 136.05 ms. Allocated memory is still 203.9 MB. Free memory was 169.7 MB in the beginning and 164.6 MB in the end (delta: 5.1 MB). Peak memory consumption was 5.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1412.24 ms. Allocated memory was 203.9 MB in the beginning and 233.8 MB in the end (delta: 29.9 MB). Free memory was 164.6 MB in the beginning and 179.3 MB in the end (delta: -14.7 MB). Peak memory consumption was 85.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 23428.08 ms. Allocated memory was 233.8 MB in the beginning and 534.8 MB in the end (delta: 300.9 MB). Free memory was 179.3 MB in the beginning and 169.4 MB in the end (delta: 9.9 MB). Peak memory consumption was 400.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 515]: 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: ((((((((((((((((1 == a7 && 15 <= a8) && 1 == a21) && a16 <= 4) || (((14 <= a8 && 1 == a21) && a8 < 15) && a16 <= 4)) || ((((a16 <= 5 && 5 <= a16) && a8 < 15) || ((a8 <= 13 && 5 <= a16) && 1 == a20)) && a21 == \old(a21))) || !(\old(a7) <= 0)) || !(5 <= \old(a16))) || (((a8 <= 13 && 1 == a7) && a21 <= 0) && a16 <= 4)) || !(1 == \old(a20))) || !(15 <= \old(a8))) || ((a8 <= 13 && 1 == a21) && 1 == a20)) || ((a7 <= 0 && 15 <= a8) && 1 == a21)) || !(\old(a16) <= 5)) || (((1 == a7 && a16 <= 5) && 5 <= a16) && 1 == a21)) || ((a7 <= 0 && a16 <= 5) && a21 == \old(a21))) || !(1 == \old(a21))) || ((1 == a7 && a21 <= 0) && (((a16 <= 5 && 5 <= a16) && a8 < 15) || ((a8 <= 13 && 5 <= a16) && 1 == a20))) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 207 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 18.4s, OverallIterations: 11, TraceHistogramMax: 4, AutomataDifference: 11.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 4.7s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 388 SDtfs, 3444 SDslu, 355 SDs, 0 SdLazy, 7754 SolverSat, 1183 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 7.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2531 GetRequests, 2481 SyntacticMatches, 4 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4567occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.3s AutomataMinimizationTime, 11 MinimizatonAttempts, 3034 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 173 PreInvPairs, 253 NumberOfFragments, 871 HoareAnnotationTreeSize, 173 FomulaSimplifications, 169930 FormulaSimplificationTreeSizeReduction, 1.2s HoareSimplificationTime, 7 FomulaSimplificationsInter, 57084 FormulaSimplificationTreeSizeReductionInter, 3.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 1692 NumberOfCodeBlocks, 1692 NumberOfCodeBlocksAsserted, 44 NumberOfCheckSat, 2502 ConstructedInterpolants, 0 QuantifiedInterpolants, 868536 SizeOfPredicates, 15 NumberOfNonLiveVariables, 4686 ConjunctsInSsa, 59 ConjunctsInUnsatCore, 16 InterpolantComputations, 6 PerfectInterpolantSequences, 710/755 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...