/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic NUM_FUNCTIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 2 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/psyco/psyco_io_1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 13:56:41,767 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 13:56:41,770 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 13:56:41,788 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-07-21 13:56:41,814 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 13:56:41,816 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 13:56:41,818 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 13:56:41,819 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 13:56:41,820 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 13:56:41,821 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 13:56:41,823 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 13:56:41,828 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 13:56:41,833 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 13:56:41,837 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 13:56:41,838 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 13:56:41,839 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 13:56:41,841 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 13:56:41,849 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 13:56:41,850 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 13:56:41,851 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 13:56:41,851 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-21 13:56:41,865 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 13:56:41,866 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 13:56:41,867 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 13:56:41,867 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 13:56:41,867 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 13:56:41,868 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 13:56:41,868 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 13:56:41,868 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 13:56:41,868 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 13:56:41,868 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 13:56:41,868 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 13:56:41,869 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 13:56:41,869 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 13:56:41,869 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 13:56:41,869 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 13:56:41,869 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 13:56:41,870 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 13:56:41,870 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 13:56:41,870 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 13:56:41,870 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 13:56:41,870 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 13:56:41,871 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 13:56:41,871 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 13:56:41,871 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 13:56:41,871 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 13:56:41,871 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 13:56:41,872 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:56:41,872 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 13:56:41,872 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 13:56:41,872 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> SMT_FEATURE_HEURISTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> NUM_FUNCTIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 2 [2020-07-21 13:56:42,143 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 13:56:42,157 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 13:56:42,160 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 13:56:42,162 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 13:56:42,162 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 13:56:42,163 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/psyco/psyco_io_1.c [2020-07-21 13:56:42,243 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/45420c312/710de935bc0e4531962d265f6e41e993/FLAG3f0475a4d [2020-07-21 13:56:42,757 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 13:56:42,759 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/psyco/psyco_io_1.c [2020-07-21 13:56:42,775 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/45420c312/710de935bc0e4531962d265f6e41e993/FLAG3f0475a4d [2020-07-21 13:56:43,100 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/45420c312/710de935bc0e4531962d265f6e41e993 [2020-07-21 13:56:43,108 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 13:56:43,111 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 13:56:43,112 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 13:56:43,112 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 13:56:43,115 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 13:56:43,117 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 01:56:43" (1/1) ... [2020-07-21 13:56:43,119 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42b3d47f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:56:43, skipping insertion in model container [2020-07-21 13:56:43,120 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 01:56:43" (1/1) ... [2020-07-21 13:56:43,127 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 13:56:43,156 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 13:56:43,355 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 13:56:43,361 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 13:56:43,397 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 13:56:43,502 INFO L208 MainTranslator]: Completed translation [2020-07-21 13:56:43,503 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:56:43 WrapperNode [2020-07-21 13:56:43,503 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 13:56:43,504 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 13:56:43,504 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 13:56:43,504 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 13:56:43,518 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:56:43" (1/1) ... [2020-07-21 13:56:43,518 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:56:43" (1/1) ... [2020-07-21 13:56:43,524 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:56:43" (1/1) ... [2020-07-21 13:56:43,525 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:56:43" (1/1) ... [2020-07-21 13:56:43,533 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:56:43" (1/1) ... [2020-07-21 13:56:43,543 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:56:43" (1/1) ... [2020-07-21 13:56:43,545 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:56:43" (1/1) ... [2020-07-21 13:56:43,548 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 13:56:43,549 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 13:56:43,549 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 13:56:43,549 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 13:56:43,550 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:56:43" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 13:56:43,613 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 13:56:43,613 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 13:56:43,613 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 13:56:43,613 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 13:56:43,614 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 13:56:43,614 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 13:56:43,614 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 13:56:43,615 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 13:56:44,110 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 13:56:44,110 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-07-21 13:56:44,115 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:56:44 BoogieIcfgContainer [2020-07-21 13:56:44,115 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 13:56:44,117 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 13:56:44,117 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 13:56:44,120 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 13:56:44,120 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 01:56:43" (1/3) ... [2020-07-21 13:56:44,121 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@752362e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 01:56:44, skipping insertion in model container [2020-07-21 13:56:44,122 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:56:43" (2/3) ... [2020-07-21 13:56:44,122 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@752362e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 01:56:44, skipping insertion in model container [2020-07-21 13:56:44,122 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:56:44" (3/3) ... [2020-07-21 13:56:44,124 INFO L109 eAbstractionObserver]: Analyzing ICFG psyco_io_1.c [2020-07-21 13:56:44,134 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 13:56:44,142 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 13:56:44,155 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 13:56:44,179 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 13:56:44,179 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 13:56:44,179 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 13:56:44,179 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 13:56:44,180 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 13:56:44,180 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 13:56:44,180 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 13:56:44,180 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 13:56:44,200 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states. [2020-07-21 13:56:44,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-07-21 13:56:44,207 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 13:56:44,208 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 13:56:44,208 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 13:56:44,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 13:56:44,213 INFO L82 PathProgramCache]: Analyzing trace with hash -901605196, now seen corresponding path program 1 times [2020-07-21 13:56:44,220 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 13:56:44,220 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [760687806] [2020-07-21 13:56:44,221 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:56:44,313 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 13:56:44,314 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 13:56:44,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-21 13:56:44,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 13:56:44,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 13:56:44,348 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 13:56:44,352 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [760687806] [2020-07-21 13:56:44,353 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 13:56:44,354 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-21 13:56:44,355 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323830918] [2020-07-21 13:56:44,360 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-21 13:56:44,361 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 13:56:44,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-21 13:56:44,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 13:56:44,379 INFO L87 Difference]: Start difference. First operand 73 states. Second operand 2 states. [2020-07-21 13:56:44,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 13:56:44,412 INFO L93 Difference]: Finished difference Result 136 states and 250 transitions. [2020-07-21 13:56:44,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-21 13:56:44,415 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2020-07-21 13:56:44,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 13:56:44,434 INFO L225 Difference]: With dead ends: 136 [2020-07-21 13:56:44,434 INFO L226 Difference]: Without dead ends: 61 [2020-07-21 13:56:44,446 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 13:56:44,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-07-21 13:56:44,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2020-07-21 13:56:44,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-07-21 13:56:44,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 91 transitions. [2020-07-21 13:56:44,491 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 91 transitions. Word has length 13 [2020-07-21 13:56:44,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 13:56:44,492 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 91 transitions. [2020-07-21 13:56:44,492 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-21 13:56:44,492 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 91 transitions. [2020-07-21 13:56:44,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-07-21 13:56:44,493 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 13:56:44,494 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 13:56:44,695 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:56:44,695 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 13:56:44,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 13:56:44,698 INFO L82 PathProgramCache]: Analyzing trace with hash -1647463811, now seen corresponding path program 1 times [2020-07-21 13:56:44,699 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 13:56:44,699 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1409174147] [2020-07-21 13:56:44,700 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:56:44,761 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 13:56:44,761 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 13:56:44,763 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 13:56:44,764 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 13:56:44,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 13:56:44,809 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 13:56:44,809 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1409174147] [2020-07-21 13:56:44,809 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 13:56:44,810 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 13:56:44,810 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803842448] [2020-07-21 13:56:44,811 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 13:56:44,812 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 13:56:44,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 13:56:44,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 13:56:44,813 INFO L87 Difference]: Start difference. First operand 61 states and 91 transitions. Second operand 3 states. [2020-07-21 13:56:44,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 13:56:44,895 INFO L93 Difference]: Finished difference Result 122 states and 186 transitions. [2020-07-21 13:56:44,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 13:56:44,896 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-07-21 13:56:44,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 13:56:44,898 INFO L225 Difference]: With dead ends: 122 [2020-07-21 13:56:44,898 INFO L226 Difference]: Without dead ends: 67 [2020-07-21 13:56:44,899 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 13:56:44,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-07-21 13:56:44,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2020-07-21 13:56:44,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-07-21 13:56:44,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 98 transitions. [2020-07-21 13:56:44,910 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 98 transitions. Word has length 14 [2020-07-21 13:56:44,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 13:56:44,910 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 98 transitions. [2020-07-21 13:56:44,910 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 13:56:44,911 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 98 transitions. [2020-07-21 13:56:44,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-07-21 13:56:44,912 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 13:56:44,912 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 13:56:45,126 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:56:45,127 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 13:56:45,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 13:56:45,128 INFO L82 PathProgramCache]: Analyzing trace with hash 1212559863, now seen corresponding path program 1 times [2020-07-21 13:56:45,129 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 13:56:45,130 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [122550234] [2020-07-21 13:56:45,130 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:56:45,181 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 13:56:45,182 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 13:56:45,182 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 13:56:45,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 13:56:45,197 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 13:56:45,197 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 13:56:45,201 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [122550234] [2020-07-21 13:56:45,201 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 13:56:45,201 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 13:56:45,201 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067398582] [2020-07-21 13:56:45,202 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 13:56:45,203 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 13:56:45,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 13:56:45,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 13:56:45,204 INFO L87 Difference]: Start difference. First operand 67 states and 98 transitions. Second operand 3 states. [2020-07-21 13:56:45,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 13:56:45,257 INFO L93 Difference]: Finished difference Result 120 states and 178 transitions. [2020-07-21 13:56:45,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 13:56:45,258 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-07-21 13:56:45,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 13:56:45,259 INFO L225 Difference]: With dead ends: 120 [2020-07-21 13:56:45,259 INFO L226 Difference]: Without dead ends: 59 [2020-07-21 13:56:45,260 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 13:56:45,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-07-21 13:56:45,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2020-07-21 13:56:45,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-07-21 13:56:45,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 84 transitions. [2020-07-21 13:56:45,269 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 84 transitions. Word has length 19 [2020-07-21 13:56:45,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 13:56:45,269 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 84 transitions. [2020-07-21 13:56:45,270 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 13:56:45,270 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 84 transitions. [2020-07-21 13:56:45,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-07-21 13:56:45,271 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 13:56:45,271 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 13:56:45,484 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:56:45,485 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 13:56:45,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 13:56:45,486 INFO L82 PathProgramCache]: Analyzing trace with hash -2054021688, now seen corresponding path program 1 times [2020-07-21 13:56:45,486 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 13:56:45,487 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1584800299] [2020-07-21 13:56:45,488 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:56:45,574 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 13:56:45,574 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 13:56:45,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-21 13:56:45,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 13:56:45,592 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 13:56:45,592 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 13:56:45,593 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1584800299] [2020-07-21 13:56:45,593 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 13:56:45,593 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 13:56:45,593 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389154240] [2020-07-21 13:56:45,594 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 13:56:45,594 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 13:56:45,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 13:56:45,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 13:56:45,595 INFO L87 Difference]: Start difference. First operand 59 states and 84 transitions. Second operand 3 states. [2020-07-21 13:56:45,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 13:56:45,654 INFO L93 Difference]: Finished difference Result 143 states and 214 transitions. [2020-07-21 13:56:45,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 13:56:45,655 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-07-21 13:56:45,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 13:56:45,657 INFO L225 Difference]: With dead ends: 143 [2020-07-21 13:56:45,657 INFO L226 Difference]: Without dead ends: 97 [2020-07-21 13:56:45,658 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 13:56:45,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-07-21 13:56:45,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 94. [2020-07-21 13:56:45,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-07-21 13:56:45,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 136 transitions. [2020-07-21 13:56:45,668 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 136 transitions. Word has length 24 [2020-07-21 13:56:45,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 13:56:45,669 INFO L479 AbstractCegarLoop]: Abstraction has 94 states and 136 transitions. [2020-07-21 13:56:45,669 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 13:56:45,669 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 136 transitions. [2020-07-21 13:56:45,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-07-21 13:56:45,670 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 13:56:45,670 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 13:56:45,883 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:56:45,884 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 13:56:45,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 13:56:45,884 INFO L82 PathProgramCache]: Analyzing trace with hash -1279925660, now seen corresponding path program 1 times [2020-07-21 13:56:45,885 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 13:56:45,885 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [668818067] [2020-07-21 13:56:45,885 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:56:45,919 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 13:56:45,920 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 13:56:45,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 13:56:45,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 13:56:45,939 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 13:56:45,940 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 13:56:45,941 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [668818067] [2020-07-21 13:56:45,941 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 13:56:45,941 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 13:56:45,941 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391936579] [2020-07-21 13:56:45,942 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 13:56:45,942 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 13:56:45,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 13:56:45,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 13:56:45,944 INFO L87 Difference]: Start difference. First operand 94 states and 136 transitions. Second operand 3 states. [2020-07-21 13:56:45,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 13:56:45,979 INFO L93 Difference]: Finished difference Result 187 states and 272 transitions. [2020-07-21 13:56:45,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 13:56:45,979 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-07-21 13:56:45,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 13:56:45,981 INFO L225 Difference]: With dead ends: 187 [2020-07-21 13:56:45,981 INFO L226 Difference]: Without dead ends: 108 [2020-07-21 13:56:45,982 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 13:56:45,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-07-21 13:56:45,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 106. [2020-07-21 13:56:45,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-07-21 13:56:45,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 150 transitions. [2020-07-21 13:56:45,994 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 150 transitions. Word has length 25 [2020-07-21 13:56:45,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 13:56:45,994 INFO L479 AbstractCegarLoop]: Abstraction has 106 states and 150 transitions. [2020-07-21 13:56:45,994 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 13:56:45,995 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 150 transitions. [2020-07-21 13:56:45,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-07-21 13:56:45,996 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 13:56:45,996 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 13:56:46,210 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:56:46,211 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 13:56:46,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 13:56:46,213 INFO L82 PathProgramCache]: Analyzing trace with hash -964230168, now seen corresponding path program 1 times [2020-07-21 13:56:46,213 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 13:56:46,214 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [727628567] [2020-07-21 13:56:46,214 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:56:46,261 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 13:56:46,262 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 13:56:46,263 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 13:56:46,265 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 13:56:46,280 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-07-21 13:56:46,280 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 13:56:46,281 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [727628567] [2020-07-21 13:56:46,281 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 13:56:46,281 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 13:56:46,282 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945269223] [2020-07-21 13:56:46,282 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 13:56:46,283 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 13:56:46,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 13:56:46,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 13:56:46,284 INFO L87 Difference]: Start difference. First operand 106 states and 150 transitions. Second operand 3 states. [2020-07-21 13:56:46,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 13:56:46,327 INFO L93 Difference]: Finished difference Result 173 states and 247 transitions. [2020-07-21 13:56:46,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 13:56:46,328 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 36 [2020-07-21 13:56:46,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 13:56:46,329 INFO L225 Difference]: With dead ends: 173 [2020-07-21 13:56:46,330 INFO L226 Difference]: Without dead ends: 82 [2020-07-21 13:56:46,337 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 13:56:46,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-07-21 13:56:46,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2020-07-21 13:56:46,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-07-21 13:56:46,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 112 transitions. [2020-07-21 13:56:46,356 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 112 transitions. Word has length 36 [2020-07-21 13:56:46,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 13:56:46,356 INFO L479 AbstractCegarLoop]: Abstraction has 82 states and 112 transitions. [2020-07-21 13:56:46,356 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 13:56:46,357 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 112 transitions. [2020-07-21 13:56:46,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-07-21 13:56:46,360 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 13:56:46,360 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 13:56:46,560 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:56:46,561 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 13:56:46,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 13:56:46,561 INFO L82 PathProgramCache]: Analyzing trace with hash -1856126908, now seen corresponding path program 1 times [2020-07-21 13:56:46,562 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 13:56:46,562 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [924027777] [2020-07-21 13:56:46,562 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:56:46,613 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 13:56:46,613 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 13:56:46,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-21 13:56:46,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 13:56:46,638 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-07-21 13:56:46,639 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 13:56:46,639 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [924027777] [2020-07-21 13:56:46,639 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 13:56:46,639 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 13:56:46,640 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8361766] [2020-07-21 13:56:46,640 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 13:56:46,640 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 13:56:46,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 13:56:46,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 13:56:46,641 INFO L87 Difference]: Start difference. First operand 82 states and 112 transitions. Second operand 4 states. [2020-07-21 13:56:46,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 13:56:46,684 INFO L93 Difference]: Finished difference Result 85 states and 115 transitions. [2020-07-21 13:56:46,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-21 13:56:46,684 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 37 [2020-07-21 13:56:46,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 13:56:46,685 INFO L225 Difference]: With dead ends: 85 [2020-07-21 13:56:46,685 INFO L226 Difference]: Without dead ends: 0 [2020-07-21 13:56:46,686 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-21 13:56:46,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-21 13:56:46,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-21 13:56:46,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-21 13:56:46,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-21 13:56:46,687 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 37 [2020-07-21 13:56:46,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 13:56:46,688 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-21 13:56:46,688 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 13:56:46,688 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-21 13:56:46,688 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-21 13:56:46,896 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:56:46,900 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-21 13:56:47,079 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-21 13:56:47,080 INFO L271 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2020-07-21 13:56:47,080 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-21 13:56:47,080 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-21 13:56:47,080 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-21 13:56:47,081 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-21 13:56:47,081 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-21 13:56:47,081 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 13 344) no Hoare annotation was computed. [2020-07-21 13:56:47,081 INFO L268 CegarLoopResult]: For program point L36(lines 36 47) no Hoare annotation was computed. [2020-07-21 13:56:47,081 INFO L268 CegarLoopResult]: For program point L86(lines 86 101) no Hoare annotation was computed. [2020-07-21 13:56:47,081 INFO L268 CegarLoopResult]: For program point L53(lines 53 104) no Hoare annotation was computed. [2020-07-21 13:56:47,081 INFO L268 CegarLoopResult]: For program point L202(lines 202 217) no Hoare annotation was computed. [2020-07-21 13:56:47,082 INFO L268 CegarLoopResult]: For program point L70(lines 70 85) no Hoare annotation was computed. [2020-07-21 13:56:47,082 INFO L268 CegarLoopResult]: For program point L318(lines 318 333) no Hoare annotation was computed. [2020-07-21 13:56:47,082 INFO L268 CegarLoopResult]: For program point L186(lines 186 201) no Hoare annotation was computed. [2020-07-21 13:56:47,082 INFO L268 CegarLoopResult]: For program point L54(lines 54 69) no Hoare annotation was computed. [2020-07-21 13:56:47,082 INFO L264 CegarLoopResult]: At program point L335(lines 23 339) the Hoare annotation is: (let ((.cse0 (= 0 main_~this_sink~0))) (or (and (<= main_~q~0 2) (<= 2 main_~q~0) .cse0) (and .cse0 (<= main_~q~0 0)) (and (<= 3 main_~q~0) (not .cse0)))) [2020-07-21 13:56:47,082 INFO L268 CegarLoopResult]: For program point L302(lines 302 317) no Hoare annotation was computed. [2020-07-21 13:56:47,083 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 13 344) no Hoare annotation was computed. [2020-07-21 13:56:47,083 INFO L268 CegarLoopResult]: For program point L170(lines 170 185) no Hoare annotation was computed. [2020-07-21 13:56:47,083 INFO L268 CegarLoopResult]: For program point L286(lines 286 301) no Hoare annotation was computed. [2020-07-21 13:56:47,083 INFO L268 CegarLoopResult]: For program point L154(lines 154 169) no Hoare annotation was computed. [2020-07-21 13:56:47,083 INFO L268 CegarLoopResult]: For program point L88(lines 88 99) no Hoare annotation was computed. [2020-07-21 13:56:47,083 INFO L268 CegarLoopResult]: For program point L270(lines 270 285) no Hoare annotation was computed. [2020-07-21 13:56:47,084 INFO L268 CegarLoopResult]: For program point L204(lines 204 215) no Hoare annotation was computed. [2020-07-21 13:56:47,084 INFO L268 CegarLoopResult]: For program point L138(lines 138 153) no Hoare annotation was computed. [2020-07-21 13:56:47,084 INFO L268 CegarLoopResult]: For program point L105(lines 105 220) no Hoare annotation was computed. [2020-07-21 13:56:47,084 INFO L268 CegarLoopResult]: For program point L72(lines 72 83) no Hoare annotation was computed. [2020-07-21 13:56:47,084 INFO L268 CegarLoopResult]: For program point L320(lines 320 331) no Hoare annotation was computed. [2020-07-21 13:56:47,084 INFO L268 CegarLoopResult]: For program point L254(lines 254 269) no Hoare annotation was computed. [2020-07-21 13:56:47,085 INFO L268 CegarLoopResult]: For program point L221(lines 221 336) no Hoare annotation was computed. [2020-07-21 13:56:47,085 INFO L268 CegarLoopResult]: For program point L188(lines 188 199) no Hoare annotation was computed. [2020-07-21 13:56:47,085 INFO L268 CegarLoopResult]: For program point L122(lines 122 137) no Hoare annotation was computed. [2020-07-21 13:56:47,085 INFO L268 CegarLoopResult]: For program point L56(lines 56 67) no Hoare annotation was computed. [2020-07-21 13:56:47,085 INFO L264 CegarLoopResult]: At program point L23-2(lines 23 339) the Hoare annotation is: (let ((.cse0 (= 0 main_~this_sink~0))) (or (and (<= main_~q~0 2) (<= 2 main_~q~0) .cse0) (and .cse0 (<= main_~q~0 0)) (and (<= 3 main_~q~0) (not .cse0)))) [2020-07-21 13:56:47,085 INFO L268 CegarLoopResult]: For program point L23-3(lines 23 339) no Hoare annotation was computed. [2020-07-21 13:56:47,086 INFO L268 CegarLoopResult]: For program point L304(lines 304 315) no Hoare annotation was computed. [2020-07-21 13:56:47,086 INFO L268 CegarLoopResult]: For program point L238(lines 238 253) no Hoare annotation was computed. [2020-07-21 13:56:47,086 INFO L268 CegarLoopResult]: For program point L172(lines 172 183) no Hoare annotation was computed. [2020-07-21 13:56:47,086 INFO L268 CegarLoopResult]: For program point L106(lines 106 121) no Hoare annotation was computed. [2020-07-21 13:56:47,086 INFO L268 CegarLoopResult]: For program point L40(lines 40 42) no Hoare annotation was computed. [2020-07-21 13:56:47,086 INFO L268 CegarLoopResult]: For program point L288(lines 288 299) no Hoare annotation was computed. [2020-07-21 13:56:47,087 INFO L268 CegarLoopResult]: For program point L222(lines 222 237) no Hoare annotation was computed. [2020-07-21 13:56:47,087 INFO L268 CegarLoopResult]: For program point L156(lines 156 167) no Hoare annotation was computed. [2020-07-21 13:56:47,087 INFO L268 CegarLoopResult]: For program point L272(lines 272 283) no Hoare annotation was computed. [2020-07-21 13:56:47,087 INFO L268 CegarLoopResult]: For program point L140(lines 140 151) no Hoare annotation was computed. [2020-07-21 13:56:47,087 INFO L268 CegarLoopResult]: For program point L256(lines 256 267) no Hoare annotation was computed. [2020-07-21 13:56:47,088 INFO L268 CegarLoopResult]: For program point L124(lines 124 135) no Hoare annotation was computed. [2020-07-21 13:56:47,088 INFO L268 CegarLoopResult]: For program point L240(lines 240 251) no Hoare annotation was computed. [2020-07-21 13:56:47,088 INFO L268 CegarLoopResult]: For program point L108(lines 108 119) no Hoare annotation was computed. [2020-07-21 13:56:47,088 INFO L268 CegarLoopResult]: For program point L224(lines 224 235) no Hoare annotation was computed. [2020-07-21 13:56:47,088 INFO L268 CegarLoopResult]: For program point L92(lines 92 94) no Hoare annotation was computed. [2020-07-21 13:56:47,088 INFO L268 CegarLoopResult]: For program point L208(lines 208 210) no Hoare annotation was computed. [2020-07-21 13:56:47,089 INFO L268 CegarLoopResult]: For program point L76(lines 76 78) no Hoare annotation was computed. [2020-07-21 13:56:47,089 INFO L268 CegarLoopResult]: For program point L324(lines 324 326) no Hoare annotation was computed. [2020-07-21 13:56:47,089 INFO L268 CegarLoopResult]: For program point L192(lines 192 194) no Hoare annotation was computed. [2020-07-21 13:56:47,089 INFO L268 CegarLoopResult]: For program point L60(lines 60 62) no Hoare annotation was computed. [2020-07-21 13:56:47,089 INFO L268 CegarLoopResult]: For program point L308(lines 308 310) no Hoare annotation was computed. [2020-07-21 13:56:47,089 INFO L268 CegarLoopResult]: For program point L176(lines 176 178) no Hoare annotation was computed. [2020-07-21 13:56:47,090 INFO L264 CegarLoopResult]: At program point L325(lines 13 344) the Hoare annotation is: false [2020-07-21 13:56:47,090 INFO L268 CegarLoopResult]: For program point L292(lines 292 294) no Hoare annotation was computed. [2020-07-21 13:56:47,090 INFO L268 CegarLoopResult]: For program point L160(lines 160 162) no Hoare annotation was computed. [2020-07-21 13:56:47,090 INFO L268 CegarLoopResult]: For program point L276(lines 276 278) no Hoare annotation was computed. [2020-07-21 13:56:47,090 INFO L268 CegarLoopResult]: For program point L144(lines 144 146) no Hoare annotation was computed. [2020-07-21 13:56:47,090 INFO L268 CegarLoopResult]: For program point L260(lines 260 262) no Hoare annotation was computed. [2020-07-21 13:56:47,091 INFO L268 CegarLoopResult]: For program point L128(lines 128 130) no Hoare annotation was computed. [2020-07-21 13:56:47,091 INFO L268 CegarLoopResult]: For program point L244(lines 244 246) no Hoare annotation was computed. [2020-07-21 13:56:47,091 INFO L268 CegarLoopResult]: For program point L112(lines 112 114) no Hoare annotation was computed. [2020-07-21 13:56:47,091 INFO L268 CegarLoopResult]: For program point L228(lines 228 230) no Hoare annotation was computed. [2020-07-21 13:56:47,091 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 343) no Hoare annotation was computed. [2020-07-21 13:56:47,092 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 344) the Hoare annotation is: true [2020-07-21 13:56:47,092 INFO L268 CegarLoopResult]: For program point L33(lines 33 52) no Hoare annotation was computed. [2020-07-21 13:56:47,092 INFO L268 CegarLoopResult]: For program point L34(lines 34 49) no Hoare annotation was computed. [2020-07-21 13:56:47,111 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 01:56:47 BoogieIcfgContainer [2020-07-21 13:56:47,111 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 13:56:47,115 INFO L168 Benchmark]: Toolchain (without parser) took 4003.70 ms. Allocated memory was 138.4 MB in the beginning and 235.4 MB in the end (delta: 97.0 MB). Free memory was 102.6 MB in the beginning and 110.3 MB in the end (delta: -7.7 MB). Peak memory consumption was 89.3 MB. Max. memory is 7.1 GB. [2020-07-21 13:56:47,116 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 138.4 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-07-21 13:56:47,117 INFO L168 Benchmark]: CACSL2BoogieTranslator took 392.19 ms. Allocated memory was 138.4 MB in the beginning and 202.4 MB in the end (delta: 64.0 MB). Free memory was 102.1 MB in the beginning and 181.2 MB in the end (delta: -79.1 MB). Peak memory consumption was 25.9 MB. Max. memory is 7.1 GB. [2020-07-21 13:56:47,118 INFO L168 Benchmark]: Boogie Preprocessor took 44.34 ms. Allocated memory is still 202.4 MB. Free memory was 180.8 MB in the beginning and 178.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-07-21 13:56:47,119 INFO L168 Benchmark]: RCFGBuilder took 566.83 ms. Allocated memory is still 202.4 MB. Free memory was 178.8 MB in the beginning and 151.2 MB in the end (delta: 27.6 MB). Peak memory consumption was 27.6 MB. Max. memory is 7.1 GB. [2020-07-21 13:56:47,119 INFO L168 Benchmark]: TraceAbstraction took 2994.96 ms. Allocated memory was 202.4 MB in the beginning and 235.4 MB in the end (delta: 33.0 MB). Free memory was 150.6 MB in the beginning and 110.3 MB in the end (delta: 40.3 MB). Peak memory consumption was 73.3 MB. Max. memory is 7.1 GB. [2020-07-21 13:56:47,124 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 138.4 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 392.19 ms. Allocated memory was 138.4 MB in the beginning and 202.4 MB in the end (delta: 64.0 MB). Free memory was 102.1 MB in the beginning and 181.2 MB in the end (delta: -79.1 MB). Peak memory consumption was 25.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 44.34 ms. Allocated memory is still 202.4 MB. Free memory was 180.8 MB in the beginning and 178.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 566.83 ms. Allocated memory is still 202.4 MB. Free memory was 178.8 MB in the beginning and 151.2 MB in the end (delta: 27.6 MB). Peak memory consumption was 27.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2994.96 ms. Allocated memory was 202.4 MB in the beginning and 235.4 MB in the end (delta: 33.0 MB). Free memory was 150.6 MB in the beginning and 110.3 MB in the end (delta: 40.3 MB). Peak memory consumption was 73.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 343]: 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: 23]: Loop Invariant Derived loop invariant: (((q <= 2 && 2 <= q) && 0 == this_sink) || (0 == this_sink && q <= 0)) || (3 <= q && !(0 == this_sink)) - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: (((q <= 2 && 2 <= q) && 0 == this_sink) || (0 == this_sink && q <= 0)) || (3 <= q && !(0 == this_sink)) - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 73 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.7s, OverallIterations: 7, TraceHistogramMax: 3, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 549 SDtfs, 199 SDslu, 292 SDs, 0 SdLazy, 98 SolverSat, 39 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 162 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=106occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 5 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 15 NumberOfFragments, 57 HoareAnnotationTreeSize, 7 FomulaSimplifications, 29 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 12 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 168 NumberOfCodeBlocks, 122 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 161 ConstructedInterpolants, 0 QuantifiedInterpolants, 6905 SizeOfPredicates, 5 NumberOfNonLiveVariables, 695 ConjunctsInSsa, 17 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 27/27 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...