/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic NUM_VARIABLES --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label08.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 17:29:03,914 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 17:29:03,916 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 17:29:03,929 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-07-20 17:29:03,938 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 17:29:03,939 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 17:29:03,941 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 17:29:03,942 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 17:29:03,943 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 17:29:03,943 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 17:29:03,945 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 17:29:03,948 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 17:29:03,949 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 17:29:03,950 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 17:29:03,951 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 17:29:03,952 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 17:29:03,955 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 17:29:03,965 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 17:29:03,980 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 17:29:03,981 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 17:29:03,982 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 17:29:03,982 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 17:29:03,982 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 17:29:03,983 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 17:29:03,983 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 17:29:03,983 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 17:29:03,983 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 17:29:03,983 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 17:29:03,983 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 17:29:03,984 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 17:29:03,984 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 17:29:03,984 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 17:29:03,984 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 17:29:03,984 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 17:29:03,985 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 17:29:03,985 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 17:29:03,985 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 17:29:03,985 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 17:29:03,985 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 17:29:03,986 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 17:29:03,986 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 17:29:03,986 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 17:29:03,986 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 17:29:03,986 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 17:29:03,987 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 17:29:03,987 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 17:29:03,987 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 17:29:03,987 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> SMT_FEATURE_HEURISTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> NUM_VARIABLES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4 [2020-07-20 17:29:04,292 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 17:29:04,306 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 17:29:04,309 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 17:29:04,311 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 17:29:04,311 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 17:29:04,312 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label08.c [2020-07-20 17:29:04,376 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c2f2ca173/31f0995cc2274233ad112001268d94da/FLAG84deac2dc [2020-07-20 17:29:04,973 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 17:29:04,974 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem10_label08.c [2020-07-20 17:29:04,989 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c2f2ca173/31f0995cc2274233ad112001268d94da/FLAG84deac2dc [2020-07-20 17:29:05,226 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c2f2ca173/31f0995cc2274233ad112001268d94da [2020-07-20 17:29:05,234 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 17:29:05,238 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 17:29:05,239 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 17:29:05,239 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 17:29:05,243 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 17:29:05,244 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 05:29:05" (1/1) ... [2020-07-20 17:29:05,247 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f796372 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:29:05, skipping insertion in model container [2020-07-20 17:29:05,247 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 05:29:05" (1/1) ... [2020-07-20 17:29:05,256 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 17:29:05,310 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 17:29:05,881 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 17:29:05,889 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 17:29:06,009 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 17:29:06,026 INFO L208 MainTranslator]: Completed translation [2020-07-20 17:29:06,026 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:29:06 WrapperNode [2020-07-20 17:29:06,026 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 17:29:06,027 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 17:29:06,027 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 17:29:06,028 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 17:29:06,042 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:29:06" (1/1) ... [2020-07-20 17:29:06,043 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:29:06" (1/1) ... [2020-07-20 17:29:06,062 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:29:06" (1/1) ... [2020-07-20 17:29:06,063 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:29:06" (1/1) ... [2020-07-20 17:29:06,102 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:29:06" (1/1) ... [2020-07-20 17:29:06,118 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:29:06" (1/1) ... [2020-07-20 17:29:06,127 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:29:06" (1/1) ... [2020-07-20 17:29:06,136 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 17:29:06,136 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 17:29:06,137 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 17:29:06,137 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 17:29:06,138 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:29:06" (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 17:29:06,222 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 17:29:06,223 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 17:29:06,223 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-07-20 17:29:06,223 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 17:29:06,223 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-07-20 17:29:06,224 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 17:29:06,224 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 17:29:06,225 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-20 17:29:06,225 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 17:29:06,225 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 17:29:06,226 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 17:29:07,606 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 17:29:07,606 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-20 17:29:07,613 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 05:29:07 BoogieIcfgContainer [2020-07-20 17:29:07,613 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 17:29:07,615 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 17:29:07,615 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 17:29:07,618 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 17:29:07,619 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 05:29:05" (1/3) ... [2020-07-20 17:29:07,620 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fae194c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 05:29:07, skipping insertion in model container [2020-07-20 17:29:07,620 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:29:06" (2/3) ... [2020-07-20 17:29:07,620 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fae194c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 05:29:07, skipping insertion in model container [2020-07-20 17:29:07,621 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 05:29:07" (3/3) ... [2020-07-20 17:29:07,623 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label08.c [2020-07-20 17:29:07,635 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 17:29:07,644 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 17:29:07,659 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 17:29:07,689 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 17:29:07,689 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 17:29:07,689 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 17:29:07,689 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 17:29:07,690 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 17:29:07,690 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 17:29:07,690 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 17:29:07,690 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 17:29:07,716 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states. [2020-07-20 17:29:07,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-07-20 17:29:07,725 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 17:29:07,727 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] [2020-07-20 17:29:07,727 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 17:29:07,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 17:29:07,734 INFO L82 PathProgramCache]: Analyzing trace with hash -464539961, now seen corresponding path program 1 times [2020-07-20 17:29:07,743 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 17:29:07,744 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [286332459] [2020-07-20 17:29:07,744 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 17:29:07,858 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 17:29:07,858 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 17:29:07,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-20 17:29:07,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 17:29:07,933 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 17:29:07,933 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 17:29:07,935 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [286332459] [2020-07-20 17:29:07,936 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 17:29:07,936 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 17:29:07,937 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319325537] [2020-07-20 17:29:07,943 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 17:29:07,943 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 17:29:07,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 17:29:07,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 17:29:07,961 INFO L87 Difference]: Start difference. First operand 215 states. Second operand 3 states. [2020-07-20 17:29:09,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 17:29:09,012 INFO L93 Difference]: Finished difference Result 571 states and 989 transitions. [2020-07-20 17:29:09,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 17:29:09,015 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-07-20 17:29:09,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 17:29:09,034 INFO L225 Difference]: With dead ends: 571 [2020-07-20 17:29:09,034 INFO L226 Difference]: Without dead ends: 294 [2020-07-20 17:29:09,041 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 44 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 17:29:09,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2020-07-20 17:29:09,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 294. [2020-07-20 17:29:09,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 294 states. [2020-07-20 17:29:09,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 391 transitions. [2020-07-20 17:29:09,106 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 391 transitions. Word has length 46 [2020-07-20 17:29:09,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 17:29:09,107 INFO L479 AbstractCegarLoop]: Abstraction has 294 states and 391 transitions. [2020-07-20 17:29:09,107 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 17:29:09,107 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 391 transitions. [2020-07-20 17:29:09,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-07-20 17:29:09,113 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 17:29:09,114 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:29:09,314 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 17:29:09,315 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 17:29:09,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 17:29:09,316 INFO L82 PathProgramCache]: Analyzing trace with hash 2020042122, now seen corresponding path program 1 times [2020-07-20 17:29:09,316 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 17:29:09,317 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [992018952] [2020-07-20 17:29:09,318 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 17:29:09,404 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 17:29:09,405 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 17:29:09,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 17:29:09,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 17:29:09,449 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 17:29:09,450 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 17:29:09,450 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [992018952] [2020-07-20 17:29:09,451 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 17:29:09,451 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 17:29:09,451 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105120567] [2020-07-20 17:29:09,453 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 17:29:09,453 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 17:29:09,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 17:29:09,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 17:29:09,454 INFO L87 Difference]: Start difference. First operand 294 states and 391 transitions. Second operand 3 states. [2020-07-20 17:29:10,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 17:29:10,148 INFO L93 Difference]: Finished difference Result 582 states and 784 transitions. [2020-07-20 17:29:10,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 17:29:10,148 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 116 [2020-07-20 17:29:10,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 17:29:10,156 INFO L225 Difference]: With dead ends: 582 [2020-07-20 17:29:10,156 INFO L226 Difference]: Without dead ends: 580 [2020-07-20 17:29:10,157 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 114 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 17:29:10,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2020-07-20 17:29:10,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 437. [2020-07-20 17:29:10,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 437 states. [2020-07-20 17:29:10,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 613 transitions. [2020-07-20 17:29:10,191 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 613 transitions. Word has length 116 [2020-07-20 17:29:10,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 17:29:10,192 INFO L479 AbstractCegarLoop]: Abstraction has 437 states and 613 transitions. [2020-07-20 17:29:10,193 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 17:29:10,193 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 613 transitions. [2020-07-20 17:29:10,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-07-20 17:29:10,196 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 17:29:10,196 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:29:10,411 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 17:29:10,412 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 17:29:10,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 17:29:10,413 INFO L82 PathProgramCache]: Analyzing trace with hash 1611452593, now seen corresponding path program 1 times [2020-07-20 17:29:10,414 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 17:29:10,415 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1277274251] [2020-07-20 17:29:10,415 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 17:29:10,518 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 17:29:10,519 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 17:29:10,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 17:29:10,524 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 17:29:10,553 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 17:29:10,553 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 17:29:10,554 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1277274251] [2020-07-20 17:29:10,554 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 17:29:10,554 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 17:29:10,554 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910820005] [2020-07-20 17:29:10,555 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 17:29:10,555 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 17:29:10,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 17:29:10,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 17:29:10,556 INFO L87 Difference]: Start difference. First operand 437 states and 613 transitions. Second operand 3 states. [2020-07-20 17:29:11,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 17:29:11,288 INFO L93 Difference]: Finished difference Result 725 states and 1009 transitions. [2020-07-20 17:29:11,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 17:29:11,289 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 119 [2020-07-20 17:29:11,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 17:29:11,294 INFO L225 Difference]: With dead ends: 725 [2020-07-20 17:29:11,294 INFO L226 Difference]: Without dead ends: 723 [2020-07-20 17:29:11,295 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 17:29:11,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 723 states. [2020-07-20 17:29:11,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 723 to 437. [2020-07-20 17:29:11,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 437 states. [2020-07-20 17:29:11,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 613 transitions. [2020-07-20 17:29:11,350 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 613 transitions. Word has length 119 [2020-07-20 17:29:11,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 17:29:11,351 INFO L479 AbstractCegarLoop]: Abstraction has 437 states and 613 transitions. [2020-07-20 17:29:11,351 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 17:29:11,351 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 613 transitions. [2020-07-20 17:29:11,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-07-20 17:29:11,355 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 17:29:11,355 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:29:11,565 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 17:29:11,566 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 17:29:11,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 17:29:11,567 INFO L82 PathProgramCache]: Analyzing trace with hash -2147143710, now seen corresponding path program 1 times [2020-07-20 17:29:11,568 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 17:29:11,568 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1665490099] [2020-07-20 17:29:11,569 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 17:29:11,663 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 17:29:11,663 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 17:29:11,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 17:29:11,669 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 17:29:11,727 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 17:29:11,727 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 17:29:11,728 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1665490099] [2020-07-20 17:29:11,728 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 17:29:11,729 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 17:29:11,729 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34460002] [2020-07-20 17:29:11,730 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 17:29:11,730 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 17:29:11,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 17:29:11,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 17:29:11,731 INFO L87 Difference]: Start difference. First operand 437 states and 613 transitions. Second operand 3 states. [2020-07-20 17:29:12,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 17:29:12,495 INFO L93 Difference]: Finished difference Result 1154 states and 1676 transitions. [2020-07-20 17:29:12,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 17:29:12,502 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 168 [2020-07-20 17:29:12,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 17:29:12,507 INFO L225 Difference]: With dead ends: 1154 [2020-07-20 17:29:12,508 INFO L226 Difference]: Without dead ends: 723 [2020-07-20 17:29:12,509 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 166 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 17:29:12,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 723 states. [2020-07-20 17:29:12,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 723 to 580. [2020-07-20 17:29:12,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 580 states. [2020-07-20 17:29:12,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 806 transitions. [2020-07-20 17:29:12,533 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 806 transitions. Word has length 168 [2020-07-20 17:29:12,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 17:29:12,534 INFO L479 AbstractCegarLoop]: Abstraction has 580 states and 806 transitions. [2020-07-20 17:29:12,534 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 17:29:12,534 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 806 transitions. [2020-07-20 17:29:12,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2020-07-20 17:29:12,538 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 17:29:12,538 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-07-20 17:29:12,751 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 17:29:12,752 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 17:29:12,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 17:29:12,753 INFO L82 PathProgramCache]: Analyzing trace with hash -2143888491, now seen corresponding path program 1 times [2020-07-20 17:29:12,754 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 17:29:12,754 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1297021495] [2020-07-20 17:29:12,755 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 17:29:12,868 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 17:29:12,868 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 17:29:12,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 17:29:12,875 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 17:29:12,978 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 146 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 17:29:12,979 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 17:29:13,118 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 146 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 17:29:13,119 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1297021495] [2020-07-20 17:29:13,119 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 17:29:13,119 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-07-20 17:29:13,120 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091970440] [2020-07-20 17:29:13,120 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 17:29:13,121 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 17:29:13,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 17:29:13,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-07-20 17:29:13,121 INFO L87 Difference]: Start difference. First operand 580 states and 806 transitions. Second operand 6 states. [2020-07-20 17:29:14,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 17:29:14,212 INFO L93 Difference]: Finished difference Result 1468 states and 2114 transitions. [2020-07-20 17:29:14,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-20 17:29:14,215 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 214 [2020-07-20 17:29:14,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 17:29:14,220 INFO L225 Difference]: With dead ends: 1468 [2020-07-20 17:29:14,220 INFO L226 Difference]: Without dead ends: 894 [2020-07-20 17:29:14,222 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 431 GetRequests, 422 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-07-20 17:29:14,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 894 states. [2020-07-20 17:29:14,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 894 to 888. [2020-07-20 17:29:14,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 888 states. [2020-07-20 17:29:14,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 888 states to 888 states and 1255 transitions. [2020-07-20 17:29:14,257 INFO L78 Accepts]: Start accepts. Automaton has 888 states and 1255 transitions. Word has length 214 [2020-07-20 17:29:14,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 17:29:14,257 INFO L479 AbstractCegarLoop]: Abstraction has 888 states and 1255 transitions. [2020-07-20 17:29:14,257 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 17:29:14,258 INFO L276 IsEmpty]: Start isEmpty. Operand 888 states and 1255 transitions. [2020-07-20 17:29:14,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2020-07-20 17:29:14,262 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 17:29:14,262 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-07-20 17:29:14,472 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 17:29:14,472 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 17:29:14,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 17:29:14,473 INFO L82 PathProgramCache]: Analyzing trace with hash -931508684, now seen corresponding path program 1 times [2020-07-20 17:29:14,474 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 17:29:14,474 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [928795802] [2020-07-20 17:29:14,475 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 17:29:14,592 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 17:29:14,592 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 17:29:14,594 INFO L263 TraceCheckSpWp]: Trace formula consists of 395 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 17:29:14,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 17:29:14,639 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2020-07-20 17:29:14,640 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 17:29:14,640 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [928795802] [2020-07-20 17:29:14,640 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 17:29:14,641 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 17:29:14,641 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885832343] [2020-07-20 17:29:14,641 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 17:29:14,642 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 17:29:14,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 17:29:14,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 17:29:14,642 INFO L87 Difference]: Start difference. First operand 888 states and 1255 transitions. Second operand 3 states. [2020-07-20 17:29:15,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 17:29:15,490 INFO L93 Difference]: Finished difference Result 1033 states and 1428 transitions. [2020-07-20 17:29:15,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 17:29:15,491 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 221 [2020-07-20 17:29:15,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 17:29:15,500 INFO L225 Difference]: With dead ends: 1033 [2020-07-20 17:29:15,500 INFO L226 Difference]: Without dead ends: 1031 [2020-07-20 17:29:15,506 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 219 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 17:29:15,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1031 states. [2020-07-20 17:29:15,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1031 to 888. [2020-07-20 17:29:15,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 888 states. [2020-07-20 17:29:15,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 888 states to 888 states and 1254 transitions. [2020-07-20 17:29:15,546 INFO L78 Accepts]: Start accepts. Automaton has 888 states and 1254 transitions. Word has length 221 [2020-07-20 17:29:15,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 17:29:15,546 INFO L479 AbstractCegarLoop]: Abstraction has 888 states and 1254 transitions. [2020-07-20 17:29:15,547 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 17:29:15,547 INFO L276 IsEmpty]: Start isEmpty. Operand 888 states and 1254 transitions. [2020-07-20 17:29:15,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2020-07-20 17:29:15,553 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 17:29:15,553 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-07-20 17:29:15,767 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 17:29:15,768 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 17:29:15,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 17:29:15,769 INFO L82 PathProgramCache]: Analyzing trace with hash 1468343974, now seen corresponding path program 1 times [2020-07-20 17:29:15,769 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 17:29:15,769 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [251765769] [2020-07-20 17:29:15,770 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 17:29:15,888 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 17:29:15,889 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 17:29:15,891 INFO L263 TraceCheckSpWp]: Trace formula consists of 418 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 17:29:15,894 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 17:29:15,948 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 146 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 17:29:15,949 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 17:29:16,147 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 146 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 17:29:16,148 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [251765769] [2020-07-20 17:29:16,148 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 17:29:16,148 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-07-20 17:29:16,148 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037423665] [2020-07-20 17:29:16,150 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 17:29:16,150 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 17:29:16,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 17:29:16,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-07-20 17:29:16,151 INFO L87 Difference]: Start difference. First operand 888 states and 1254 transitions. Second operand 6 states. [2020-07-20 17:29:17,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 17:29:17,283 INFO L93 Difference]: Finished difference Result 1794 states and 2555 transitions. [2020-07-20 17:29:17,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-20 17:29:17,284 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 241 [2020-07-20 17:29:17,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 17:29:17,291 INFO L225 Difference]: With dead ends: 1794 [2020-07-20 17:29:17,292 INFO L226 Difference]: Without dead ends: 912 [2020-07-20 17:29:17,295 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 487 GetRequests, 478 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-07-20 17:29:17,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 912 states. [2020-07-20 17:29:17,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 912 to 892. [2020-07-20 17:29:17,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 892 states. [2020-07-20 17:29:17,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 892 states to 892 states and 1053 transitions. [2020-07-20 17:29:17,331 INFO L78 Accepts]: Start accepts. Automaton has 892 states and 1053 transitions. Word has length 241 [2020-07-20 17:29:17,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 17:29:17,331 INFO L479 AbstractCegarLoop]: Abstraction has 892 states and 1053 transitions. [2020-07-20 17:29:17,331 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 17:29:17,332 INFO L276 IsEmpty]: Start isEmpty. Operand 892 states and 1053 transitions. [2020-07-20 17:29:17,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2020-07-20 17:29:17,335 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 17:29:17,336 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-07-20 17:29:17,550 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 17:29:17,551 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 17:29:17,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 17:29:17,552 INFO L82 PathProgramCache]: Analyzing trace with hash -1948168109, now seen corresponding path program 1 times [2020-07-20 17:29:17,552 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 17:29:17,553 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [528843840] [2020-07-20 17:29:17,553 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 17:29:17,707 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 17:29:17,707 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 17:29:17,709 INFO L263 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 17:29:17,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 17:29:17,783 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2020-07-20 17:29:17,783 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 17:29:17,783 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [528843840] [2020-07-20 17:29:17,784 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 17:29:17,784 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 17:29:17,784 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963224343] [2020-07-20 17:29:17,785 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 17:29:17,785 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 17:29:17,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 17:29:17,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 17:29:17,786 INFO L87 Difference]: Start difference. First operand 892 states and 1053 transitions. Second operand 3 states. [2020-07-20 17:29:18,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 17:29:18,356 INFO L93 Difference]: Finished difference Result 1776 states and 2103 transitions. [2020-07-20 17:29:18,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 17:29:18,357 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 242 [2020-07-20 17:29:18,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 17:29:18,358 INFO L225 Difference]: With dead ends: 1776 [2020-07-20 17:29:18,358 INFO L226 Difference]: Without dead ends: 0 [2020-07-20 17:29:18,361 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 240 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 17:29:18,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-20 17:29:18,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-20 17:29:18,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-20 17:29:18,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-20 17:29:18,362 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 242 [2020-07-20 17:29:18,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 17:29:18,362 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-20 17:29:18,363 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 17:29:18,363 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-20 17:29:18,363 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-20 17:29:18,566 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 17:29:18,570 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-20 17:29:19,113 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 32 [2020-07-20 17:29:19,231 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-20 17:29:19,232 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (<= ~a10~0 |old(~a10~0)|) (<= |old(~a10~0)| ~a10~0)) [2020-07-20 17:29:19,232 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-20 17:29:19,232 INFO L268 CegarLoopResult]: For program point L465(lines 465 572) no Hoare annotation was computed. [2020-07-20 17:29:19,232 INFO L268 CegarLoopResult]: For program point L201-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 17:29:19,232 INFO L268 CegarLoopResult]: For program point L168-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 17:29:19,233 INFO L268 CegarLoopResult]: For program point L135-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 17:29:19,233 INFO L268 CegarLoopResult]: For program point L102-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 17:29:19,233 INFO L268 CegarLoopResult]: For program point L69-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 17:29:19,233 INFO L268 CegarLoopResult]: For program point L36-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 17:29:19,233 INFO L268 CegarLoopResult]: For program point L499(lines 499 572) no Hoare annotation was computed. [2020-07-20 17:29:19,233 INFO L268 CegarLoopResult]: For program point L301(lines 301 572) no Hoare annotation was computed. [2020-07-20 17:29:19,234 INFO L268 CegarLoopResult]: For program point L202(line 202) no Hoare annotation was computed. [2020-07-20 17:29:19,234 INFO L268 CegarLoopResult]: For program point L169(line 169) no Hoare annotation was computed. [2020-07-20 17:29:19,234 INFO L268 CegarLoopResult]: For program point L136(line 136) no Hoare annotation was computed. [2020-07-20 17:29:19,234 INFO L268 CegarLoopResult]: For program point L103(line 103) no Hoare annotation was computed. [2020-07-20 17:29:19,234 INFO L268 CegarLoopResult]: For program point L70(line 70) no Hoare annotation was computed. [2020-07-20 17:29:19,234 INFO L268 CegarLoopResult]: For program point L37(line 37) no Hoare annotation was computed. [2020-07-20 17:29:19,234 INFO L268 CegarLoopResult]: For program point L335(lines 335 572) no Hoare annotation was computed. [2020-07-20 17:29:19,234 INFO L268 CegarLoopResult]: For program point L236(lines 236 572) no Hoare annotation was computed. [2020-07-20 17:29:19,235 INFO L268 CegarLoopResult]: For program point L534(lines 534 572) no Hoare annotation was computed. [2020-07-20 17:29:19,235 INFO L268 CegarLoopResult]: For program point L171-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 17:29:19,235 INFO L268 CegarLoopResult]: For program point L138-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 17:29:19,235 INFO L268 CegarLoopResult]: For program point L105-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 17:29:19,235 INFO L268 CegarLoopResult]: For program point L72-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 17:29:19,235 INFO L268 CegarLoopResult]: For program point L39-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 17:29:19,236 INFO L268 CegarLoopResult]: For program point L436(lines 436 572) no Hoare annotation was computed. [2020-07-20 17:29:19,236 INFO L268 CegarLoopResult]: For program point L403(lines 403 572) no Hoare annotation was computed. [2020-07-20 17:29:19,236 INFO L268 CegarLoopResult]: For program point L370(lines 370 572) no Hoare annotation was computed. [2020-07-20 17:29:19,236 INFO L268 CegarLoopResult]: For program point L271(lines 271 572) no Hoare annotation was computed. [2020-07-20 17:29:19,236 INFO L268 CegarLoopResult]: For program point L172(line 172) no Hoare annotation was computed. [2020-07-20 17:29:19,236 INFO L268 CegarLoopResult]: For program point L139(line 139) no Hoare annotation was computed. [2020-07-20 17:29:19,236 INFO L268 CegarLoopResult]: For program point L106(line 106) no Hoare annotation was computed. [2020-07-20 17:29:19,237 INFO L268 CegarLoopResult]: For program point L73(line 73) no Hoare annotation was computed. [2020-07-20 17:29:19,237 INFO L268 CegarLoopResult]: For program point L40(line 40) no Hoare annotation was computed. [2020-07-20 17:29:19,237 INFO L268 CegarLoopResult]: For program point L569(lines 569 572) no Hoare annotation was computed. [2020-07-20 17:29:19,237 INFO L268 CegarLoopResult]: For program point L239(lines 239 572) no Hoare annotation was computed. [2020-07-20 17:29:19,237 INFO L268 CegarLoopResult]: For program point L504(lines 504 572) no Hoare annotation was computed. [2020-07-20 17:29:19,237 INFO L268 CegarLoopResult]: For program point L471(lines 471 572) no Hoare annotation was computed. [2020-07-20 17:29:19,237 INFO L268 CegarLoopResult]: For program point calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION(line 124) no Hoare annotation was computed. [2020-07-20 17:29:19,238 INFO L268 CegarLoopResult]: For program point L306(lines 306 572) no Hoare annotation was computed. [2020-07-20 17:29:19,238 INFO L268 CegarLoopResult]: For program point L174-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 17:29:19,238 INFO L268 CegarLoopResult]: For program point L141-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 17:29:19,238 INFO L268 CegarLoopResult]: For program point L108-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 17:29:19,238 INFO L268 CegarLoopResult]: For program point L75-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 17:29:19,238 INFO L268 CegarLoopResult]: For program point L42-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 17:29:19,238 INFO L268 CegarLoopResult]: For program point L340(lines 340 572) no Hoare annotation was computed. [2020-07-20 17:29:19,239 INFO L268 CegarLoopResult]: For program point L175(line 175) no Hoare annotation was computed. [2020-07-20 17:29:19,239 INFO L268 CegarLoopResult]: For program point L142(line 142) no Hoare annotation was computed. [2020-07-20 17:29:19,239 INFO L268 CegarLoopResult]: For program point L109(line 109) no Hoare annotation was computed. [2020-07-20 17:29:19,239 INFO L268 CegarLoopResult]: For program point L76(line 76) no Hoare annotation was computed. [2020-07-20 17:29:19,239 INFO L268 CegarLoopResult]: For program point L43(line 43) no Hoare annotation was computed. [2020-07-20 17:29:19,239 INFO L268 CegarLoopResult]: For program point L540(lines 540 572) no Hoare annotation was computed. [2020-07-20 17:29:19,239 INFO L268 CegarLoopResult]: For program point L408(lines 408 572) no Hoare annotation was computed. [2020-07-20 17:29:19,239 INFO L268 CegarLoopResult]: For program point L375(lines 375 572) no Hoare annotation was computed. [2020-07-20 17:29:19,240 INFO L268 CegarLoopResult]: For program point L210(lines 210 572) no Hoare annotation was computed. [2020-07-20 17:29:19,240 INFO L268 CegarLoopResult]: For program point L177-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 17:29:19,240 INFO L268 CegarLoopResult]: For program point L144-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 17:29:19,240 INFO L268 CegarLoopResult]: For program point L111-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 17:29:19,240 INFO L268 CegarLoopResult]: For program point L78-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 17:29:19,240 INFO L268 CegarLoopResult]: For program point L45-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 17:29:19,240 INFO L268 CegarLoopResult]: For program point L442(lines 442 572) no Hoare annotation was computed. [2020-07-20 17:29:19,240 INFO L268 CegarLoopResult]: For program point L277(lines 277 572) no Hoare annotation was computed. [2020-07-20 17:29:19,241 INFO L268 CegarLoopResult]: For program point L244(lines 244 572) no Hoare annotation was computed. [2020-07-20 17:29:19,241 INFO L268 CegarLoopResult]: For program point L178(line 178) no Hoare annotation was computed. [2020-07-20 17:29:19,241 INFO L268 CegarLoopResult]: For program point L145(line 145) no Hoare annotation was computed. [2020-07-20 17:29:19,241 INFO L268 CegarLoopResult]: For program point L112(line 112) no Hoare annotation was computed. [2020-07-20 17:29:19,241 INFO L268 CegarLoopResult]: For program point L79(line 79) no Hoare annotation was computed. [2020-07-20 17:29:19,241 INFO L268 CegarLoopResult]: For program point L46(line 46) no Hoare annotation was computed. [2020-07-20 17:29:19,241 INFO L268 CegarLoopResult]: For program point L509(lines 509 572) no Hoare annotation was computed. [2020-07-20 17:29:19,242 INFO L268 CegarLoopResult]: For program point L476(lines 476 572) no Hoare annotation was computed. [2020-07-20 17:29:19,242 INFO L268 CegarLoopResult]: For program point L378(lines 378 572) no Hoare annotation was computed. [2020-07-20 17:29:19,242 INFO L268 CegarLoopResult]: For program point L345(lines 345 572) no Hoare annotation was computed. [2020-07-20 17:29:19,242 INFO L268 CegarLoopResult]: For program point L312(lines 312 572) no Hoare annotation was computed. [2020-07-20 17:29:19,242 INFO L268 CegarLoopResult]: For program point L180-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 17:29:19,242 INFO L268 CegarLoopResult]: For program point L147-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 17:29:19,242 INFO L268 CegarLoopResult]: For program point L114-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 17:29:19,242 INFO L268 CegarLoopResult]: For program point L81-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 17:29:19,243 INFO L268 CegarLoopResult]: For program point L48-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 17:29:19,243 INFO L268 CegarLoopResult]: For program point L181(line 181) no Hoare annotation was computed. [2020-07-20 17:29:19,243 INFO L268 CegarLoopResult]: For program point L148(line 148) no Hoare annotation was computed. [2020-07-20 17:29:19,243 INFO L268 CegarLoopResult]: For program point L115(line 115) no Hoare annotation was computed. [2020-07-20 17:29:19,243 INFO L268 CegarLoopResult]: For program point L82(line 82) no Hoare annotation was computed. [2020-07-20 17:29:19,243 INFO L268 CegarLoopResult]: For program point L49(line 49) no Hoare annotation was computed. [2020-07-20 17:29:19,243 INFO L268 CegarLoopResult]: For program point L545(lines 545 572) no Hoare annotation was computed. [2020-07-20 17:29:19,243 INFO L268 CegarLoopResult]: For program point L215(lines 215 572) no Hoare annotation was computed. [2020-07-20 17:29:19,244 INFO L268 CegarLoopResult]: For program point L414(lines 414 572) no Hoare annotation was computed. [2020-07-20 17:29:19,244 INFO L268 CegarLoopResult]: For program point L249(lines 249 572) no Hoare annotation was computed. [2020-07-20 17:29:19,244 INFO L268 CegarLoopResult]: For program point L183-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 17:29:19,244 INFO L268 CegarLoopResult]: For program point L150-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 17:29:19,244 INFO L268 CegarLoopResult]: For program point L117-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 17:29:19,244 INFO L268 CegarLoopResult]: For program point L84-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 17:29:19,244 INFO L268 CegarLoopResult]: For program point L51-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 17:29:19,244 INFO L268 CegarLoopResult]: For program point calculate_outputFINAL(lines 20 574) no Hoare annotation was computed. [2020-07-20 17:29:19,245 INFO L268 CegarLoopResult]: For program point calculate_outputEXIT(lines 20 574) no Hoare annotation was computed. [2020-07-20 17:29:19,245 INFO L268 CegarLoopResult]: For program point L514(lines 514 572) no Hoare annotation was computed. [2020-07-20 17:29:19,245 INFO L268 CegarLoopResult]: For program point L481(lines 481 572) no Hoare annotation was computed. [2020-07-20 17:29:19,245 INFO L268 CegarLoopResult]: For program point L448(lines 448 572) no Hoare annotation was computed. [2020-07-20 17:29:19,245 INFO L268 CegarLoopResult]: For program point L283(lines 283 572) no Hoare annotation was computed. [2020-07-20 17:29:19,245 INFO L268 CegarLoopResult]: For program point L184(line 184) no Hoare annotation was computed. [2020-07-20 17:29:19,245 INFO L268 CegarLoopResult]: For program point L151(line 151) no Hoare annotation was computed. [2020-07-20 17:29:19,246 INFO L268 CegarLoopResult]: For program point L118(line 118) no Hoare annotation was computed. [2020-07-20 17:29:19,246 INFO L268 CegarLoopResult]: For program point L85(line 85) no Hoare annotation was computed. [2020-07-20 17:29:19,246 INFO L268 CegarLoopResult]: For program point L52(line 52) no Hoare annotation was computed. [2020-07-20 17:29:19,246 INFO L268 CegarLoopResult]: For program point L548(lines 548 572) no Hoare annotation was computed. [2020-07-20 17:29:19,246 INFO L268 CegarLoopResult]: For program point L383(lines 383 572) no Hoare annotation was computed. [2020-07-20 17:29:19,246 INFO L268 CegarLoopResult]: For program point L317(lines 317 572) no Hoare annotation was computed. [2020-07-20 17:29:19,246 INFO L268 CegarLoopResult]: For program point L351(lines 351 572) no Hoare annotation was computed. [2020-07-20 17:29:19,246 INFO L268 CegarLoopResult]: For program point L186-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 17:29:19,247 INFO L268 CegarLoopResult]: For program point L153-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 17:29:19,247 INFO L268 CegarLoopResult]: For program point L120-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 17:29:19,247 INFO L268 CegarLoopResult]: For program point L87-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 17:29:19,247 INFO L268 CegarLoopResult]: For program point L21(lines 21 23) no Hoare annotation was computed. [2020-07-20 17:29:19,247 INFO L268 CegarLoopResult]: For program point L54-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 17:29:19,247 INFO L268 CegarLoopResult]: For program point L21-2(lines 20 574) no Hoare annotation was computed. [2020-07-20 17:29:19,247 INFO L268 CegarLoopResult]: For program point L517(lines 517 572) no Hoare annotation was computed. [2020-07-20 17:29:19,247 INFO L268 CegarLoopResult]: For program point L286(lines 286 572) no Hoare annotation was computed. [2020-07-20 17:29:19,248 INFO L268 CegarLoopResult]: For program point L220(lines 220 572) no Hoare annotation was computed. [2020-07-20 17:29:19,248 INFO L268 CegarLoopResult]: For program point L187(line 187) no Hoare annotation was computed. [2020-07-20 17:29:19,248 INFO L268 CegarLoopResult]: For program point L154(line 154) no Hoare annotation was computed. [2020-07-20 17:29:19,248 INFO L268 CegarLoopResult]: For program point L121(line 121) no Hoare annotation was computed. [2020-07-20 17:29:19,248 INFO L268 CegarLoopResult]: For program point L88(line 88) no Hoare annotation was computed. [2020-07-20 17:29:19,248 INFO L268 CegarLoopResult]: For program point L55(line 55) no Hoare annotation was computed. [2020-07-20 17:29:19,248 INFO L268 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-07-20 17:29:19,248 INFO L268 CegarLoopResult]: For program point L419(lines 419 572) no Hoare annotation was computed. [2020-07-20 17:29:19,249 INFO L268 CegarLoopResult]: For program point L320(lines 320 572) no Hoare annotation was computed. [2020-07-20 17:29:19,249 INFO L268 CegarLoopResult]: For program point L254(lines 254 572) no Hoare annotation was computed. [2020-07-20 17:29:19,249 INFO L268 CegarLoopResult]: For program point L354(lines 354 572) no Hoare annotation was computed. [2020-07-20 17:29:19,249 INFO L268 CegarLoopResult]: For program point L189-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 17:29:19,249 INFO L268 CegarLoopResult]: For program point L156-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 17:29:19,249 INFO L268 CegarLoopResult]: For program point L123-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 17:29:19,249 INFO L268 CegarLoopResult]: For program point L90-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 17:29:19,249 INFO L268 CegarLoopResult]: For program point L57-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 17:29:19,250 INFO L268 CegarLoopResult]: For program point L24-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 17:29:19,250 INFO L268 CegarLoopResult]: For program point L487(lines 487 572) no Hoare annotation was computed. [2020-07-20 17:29:19,250 INFO L268 CegarLoopResult]: For program point L454(lines 454 572) no Hoare annotation was computed. [2020-07-20 17:29:19,250 INFO L268 CegarLoopResult]: For program point L388(lines 388 572) no Hoare annotation was computed. [2020-07-20 17:29:19,250 INFO L268 CegarLoopResult]: For program point L190(line 190) no Hoare annotation was computed. [2020-07-20 17:29:19,250 INFO L268 CegarLoopResult]: For program point L157(line 157) no Hoare annotation was computed. [2020-07-20 17:29:19,250 INFO L268 CegarLoopResult]: For program point L124(line 124) no Hoare annotation was computed. [2020-07-20 17:29:19,251 INFO L268 CegarLoopResult]: For program point L91(line 91) no Hoare annotation was computed. [2020-07-20 17:29:19,251 INFO L268 CegarLoopResult]: For program point L58(line 58) no Hoare annotation was computed. [2020-07-20 17:29:19,251 INFO L268 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-07-20 17:29:19,251 INFO L268 CegarLoopResult]: For program point L554(lines 554 572) no Hoare annotation was computed. [2020-07-20 17:29:19,251 INFO L268 CegarLoopResult]: For program point L323(lines 323 572) no Hoare annotation was computed. [2020-07-20 17:29:19,251 INFO L264 CegarLoopResult]: At program point calculate_outputENTRY(lines 20 574) the Hoare annotation is: (let ((.cse1 (<= ~a10~0 |old(~a10~0)|)) (.cse2 (<= |old(~a10~0)| ~a10~0))) (let ((.cse0 (and .cse1 .cse2))) (and (or .cse0 (not (<= 3 |old(~a10~0)|))) (or (and .cse1 (<= 7 ~a19~0) .cse2) (not (<= 7 |old(~a19~0)|)) (not (<= |old(~a10~0)| 2))) (or .cse0 (not (<= |old(~a10~0)| 0))) (or (<= 8 ~a19~0) (not (<= 8 |old(~a19~0)|)) (not (<= 2 |old(~a10~0)|)))))) [2020-07-20 17:29:19,251 INFO L268 CegarLoopResult]: For program point L357(lines 357 572) no Hoare annotation was computed. [2020-07-20 17:29:19,252 INFO L268 CegarLoopResult]: For program point L291(lines 291 572) no Hoare annotation was computed. [2020-07-20 17:29:19,252 INFO L268 CegarLoopResult]: For program point L225(lines 225 572) no Hoare annotation was computed. [2020-07-20 17:29:19,252 INFO L268 CegarLoopResult]: For program point L192-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 17:29:19,252 INFO L268 CegarLoopResult]: For program point L159-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 17:29:19,252 INFO L268 CegarLoopResult]: For program point L126-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 17:29:19,252 INFO L268 CegarLoopResult]: For program point L93-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 17:29:19,252 INFO L268 CegarLoopResult]: For program point L60-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 17:29:19,252 INFO L268 CegarLoopResult]: For program point L27-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 17:29:19,252 INFO L268 CegarLoopResult]: For program point L523(lines 523 572) no Hoare annotation was computed. [2020-07-20 17:29:19,253 INFO L268 CegarLoopResult]: For program point L193(line 193) no Hoare annotation was computed. [2020-07-20 17:29:19,253 INFO L268 CegarLoopResult]: For program point L160(line 160) no Hoare annotation was computed. [2020-07-20 17:29:19,253 INFO L268 CegarLoopResult]: For program point L127(line 127) no Hoare annotation was computed. [2020-07-20 17:29:19,253 INFO L268 CegarLoopResult]: For program point L94(line 94) no Hoare annotation was computed. [2020-07-20 17:29:19,253 INFO L268 CegarLoopResult]: For program point L61(line 61) no Hoare annotation was computed. [2020-07-20 17:29:19,253 INFO L268 CegarLoopResult]: For program point L28(line 28) no Hoare annotation was computed. [2020-07-20 17:29:19,253 INFO L268 CegarLoopResult]: For program point L557(lines 557 572) no Hoare annotation was computed. [2020-07-20 17:29:19,253 INFO L268 CegarLoopResult]: For program point L425(lines 425 572) no Hoare annotation was computed. [2020-07-20 17:29:19,254 INFO L268 CegarLoopResult]: For program point L326(lines 326 572) no Hoare annotation was computed. [2020-07-20 17:29:19,254 INFO L268 CegarLoopResult]: For program point L260(lines 260 572) no Hoare annotation was computed. [2020-07-20 17:29:19,254 INFO L268 CegarLoopResult]: For program point L393(lines 393 572) no Hoare annotation was computed. [2020-07-20 17:29:19,254 INFO L268 CegarLoopResult]: For program point L360(lines 360 572) no Hoare annotation was computed. [2020-07-20 17:29:19,254 INFO L268 CegarLoopResult]: For program point L195-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 17:29:19,254 INFO L268 CegarLoopResult]: For program point L162-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 17:29:19,254 INFO L268 CegarLoopResult]: For program point L129-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 17:29:19,255 INFO L268 CegarLoopResult]: For program point L96-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 17:29:19,255 INFO L268 CegarLoopResult]: For program point L63-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 17:29:19,255 INFO L268 CegarLoopResult]: For program point L30-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 17:29:19,255 INFO L268 CegarLoopResult]: For program point L526(lines 526 572) no Hoare annotation was computed. [2020-07-20 17:29:19,255 INFO L268 CegarLoopResult]: For program point L493(lines 493 572) no Hoare annotation was computed. [2020-07-20 17:29:19,255 INFO L268 CegarLoopResult]: For program point L460(lines 460 572) no Hoare annotation was computed. [2020-07-20 17:29:19,255 INFO L268 CegarLoopResult]: For program point L196(line 196) no Hoare annotation was computed. [2020-07-20 17:29:19,255 INFO L268 CegarLoopResult]: For program point L163(line 163) no Hoare annotation was computed. [2020-07-20 17:29:19,256 INFO L268 CegarLoopResult]: For program point L130(line 130) no Hoare annotation was computed. [2020-07-20 17:29:19,256 INFO L268 CegarLoopResult]: For program point L97(line 97) no Hoare annotation was computed. [2020-07-20 17:29:19,256 INFO L268 CegarLoopResult]: For program point L64(line 64) no Hoare annotation was computed. [2020-07-20 17:29:19,256 INFO L268 CegarLoopResult]: For program point L31(line 31) no Hoare annotation was computed. [2020-07-20 17:29:19,256 INFO L268 CegarLoopResult]: For program point L329(lines 329 572) no Hoare annotation was computed. [2020-07-20 17:29:19,256 INFO L268 CegarLoopResult]: For program point L296(lines 296 572) no Hoare annotation was computed. [2020-07-20 17:29:19,256 INFO L268 CegarLoopResult]: For program point L231(lines 231 572) no Hoare annotation was computed. [2020-07-20 17:29:19,256 INFO L268 CegarLoopResult]: For program point L198-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 17:29:19,257 INFO L268 CegarLoopResult]: For program point L165-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 17:29:19,257 INFO L268 CegarLoopResult]: For program point L132-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 17:29:19,257 INFO L268 CegarLoopResult]: For program point L99-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 17:29:19,257 INFO L268 CegarLoopResult]: For program point L66-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 17:29:19,257 INFO L268 CegarLoopResult]: For program point L33-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 17:29:19,257 INFO L268 CegarLoopResult]: For program point L529(lines 529 572) no Hoare annotation was computed. [2020-07-20 17:29:19,257 INFO L268 CegarLoopResult]: For program point L430(lines 430 572) no Hoare annotation was computed. [2020-07-20 17:29:19,258 INFO L268 CegarLoopResult]: For program point L265(lines 265 572) no Hoare annotation was computed. [2020-07-20 17:29:19,258 INFO L268 CegarLoopResult]: For program point L199(line 199) no Hoare annotation was computed. [2020-07-20 17:29:19,258 INFO L268 CegarLoopResult]: For program point L166(line 166) no Hoare annotation was computed. [2020-07-20 17:29:19,258 INFO L268 CegarLoopResult]: For program point L133(line 133) no Hoare annotation was computed. [2020-07-20 17:29:19,258 INFO L268 CegarLoopResult]: For program point L100(line 100) no Hoare annotation was computed. [2020-07-20 17:29:19,258 INFO L268 CegarLoopResult]: For program point L67(line 67) no Hoare annotation was computed. [2020-07-20 17:29:19,258 INFO L268 CegarLoopResult]: For program point L34(line 34) no Hoare annotation was computed. [2020-07-20 17:29:19,258 INFO L268 CegarLoopResult]: For program point L563(lines 563 572) no Hoare annotation was computed. [2020-07-20 17:29:19,258 INFO L268 CegarLoopResult]: For program point L398(lines 398 572) no Hoare annotation was computed. [2020-07-20 17:29:19,259 INFO L268 CegarLoopResult]: For program point L365(lines 365 572) no Hoare annotation was computed. [2020-07-20 17:29:19,259 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-20 17:29:19,259 INFO L264 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: (and (<= ~a10~0 0) (<= 9 ~a19~0)) [2020-07-20 17:29:19,259 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-20 17:29:19,259 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-20 17:29:19,259 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 576 592) the Hoare annotation is: (or (not (<= |old(~a10~0)| 0)) (not (<= 9 |old(~a19~0)|)) (and (<= 9 ~a19~0) (<= ~a10~0 |old(~a10~0)|) (<= |old(~a10~0)| ~a10~0))) [2020-07-20 17:29:19,260 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 576 592) no Hoare annotation was computed. [2020-07-20 17:29:19,260 INFO L264 CegarLoopResult]: At program point L590(line 590) the Hoare annotation is: (or (<= ~a10~0 0) (<= 7 ~a19~0) (not (<= |old(~a10~0)| 0)) (not (<= 9 |old(~a19~0)|)) (<= 3 ~a10~0)) [2020-07-20 17:29:19,260 INFO L268 CegarLoopResult]: For program point L590-1(line 590) no Hoare annotation was computed. [2020-07-20 17:29:19,260 INFO L268 CegarLoopResult]: For program point L587(line 587) no Hoare annotation was computed. [2020-07-20 17:29:19,260 INFO L264 CegarLoopResult]: At program point L582-2(lines 582 591) the Hoare annotation is: (or (<= ~a10~0 0) (<= 7 ~a19~0) (not (<= |old(~a10~0)| 0)) (not (<= 9 |old(~a19~0)|)) (<= 3 ~a10~0)) [2020-07-20 17:29:19,260 INFO L268 CegarLoopResult]: For program point L582-3(lines 576 592) no Hoare annotation was computed. [2020-07-20 17:29:19,279 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 05:29:19 BoogieIcfgContainer [2020-07-20 17:29:19,279 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 17:29:19,282 INFO L168 Benchmark]: Toolchain (without parser) took 14045.30 ms. Allocated memory was 144.7 MB in the beginning and 417.3 MB in the end (delta: 272.6 MB). Free memory was 100.5 MB in the beginning and 193.0 MB in the end (delta: -92.5 MB). Peak memory consumption was 180.1 MB. Max. memory is 7.1 GB. [2020-07-20 17:29:19,283 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 144.7 MB. Free memory was 120.9 MB in the beginning and 120.7 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2020-07-20 17:29:19,283 INFO L168 Benchmark]: CACSL2BoogieTranslator took 788.03 ms. Allocated memory was 144.7 MB in the beginning and 204.5 MB in the end (delta: 59.8 MB). Free memory was 100.3 MB in the beginning and 168.5 MB in the end (delta: -68.2 MB). Peak memory consumption was 30.6 MB. Max. memory is 7.1 GB. [2020-07-20 17:29:19,284 INFO L168 Benchmark]: Boogie Preprocessor took 108.64 ms. Allocated memory is still 204.5 MB. Free memory was 168.5 MB in the beginning and 163.4 MB in the end (delta: 5.1 MB). Peak memory consumption was 5.1 MB. Max. memory is 7.1 GB. [2020-07-20 17:29:19,285 INFO L168 Benchmark]: RCFGBuilder took 1477.16 ms. Allocated memory was 204.5 MB in the beginning and 236.5 MB in the end (delta: 32.0 MB). Free memory was 163.4 MB in the beginning and 179.1 MB in the end (delta: -15.7 MB). Peak memory consumption was 81.6 MB. Max. memory is 7.1 GB. [2020-07-20 17:29:19,286 INFO L168 Benchmark]: TraceAbstraction took 11664.80 ms. Allocated memory was 236.5 MB in the beginning and 417.3 MB in the end (delta: 180.9 MB). Free memory was 179.1 MB in the beginning and 193.0 MB in the end (delta: -13.9 MB). Peak memory consumption was 167.0 MB. Max. memory is 7.1 GB. [2020-07-20 17:29:19,290 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 144.7 MB. Free memory was 120.9 MB in the beginning and 120.7 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 788.03 ms. Allocated memory was 144.7 MB in the beginning and 204.5 MB in the end (delta: 59.8 MB). Free memory was 100.3 MB in the beginning and 168.5 MB in the end (delta: -68.2 MB). Peak memory consumption was 30.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 108.64 ms. Allocated memory is still 204.5 MB. Free memory was 168.5 MB in the beginning and 163.4 MB in the end (delta: 5.1 MB). Peak memory consumption was 5.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1477.16 ms. Allocated memory was 204.5 MB in the beginning and 236.5 MB in the end (delta: 32.0 MB). Free memory was 163.4 MB in the beginning and 179.1 MB in the end (delta: -15.7 MB). Peak memory consumption was 81.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 11664.80 ms. Allocated memory was 236.5 MB in the beginning and 417.3 MB in the end (delta: 180.9 MB). Free memory was 179.1 MB in the beginning and 193.0 MB in the end (delta: -13.9 MB). Peak memory consumption was 167.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 124]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 582]: Loop Invariant Derived loop invariant: (((a10 <= 0 || 7 <= a19) || !(\old(a10) <= 0)) || !(9 <= \old(a19))) || 3 <= a10 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 215 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 10.8s, OverallIterations: 8, TraceHistogramMax: 3, AutomataDifference: 6.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.6s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 499 SDtfs, 1502 SDslu, 128 SDs, 0 SdLazy, 3643 SolverSat, 902 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1824 GetRequests, 1800 SyntacticMatches, 4 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=892occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 8 MinimizatonAttempts, 741 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 32 PreInvPairs, 44 NumberOfFragments, 126 HoareAnnotationTreeSize, 32 FomulaSimplifications, 1098 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 7 FomulaSimplificationsInter, 456 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 1367 NumberOfCodeBlocks, 1367 NumberOfCodeBlocksAsserted, 32 NumberOfCheckSat, 1812 ConstructedInterpolants, 0 QuantifiedInterpolants, 845420 SizeOfPredicates, 13 NumberOfNonLiveVariables, 2579 ConjunctsInSsa, 34 ConjunctsInUnsatCore, 10 InterpolantComputations, 6 PerfectInterpolantSequences, 1011/1019 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...