/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks.term.scoring.heuristic DAGSIZE --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 --traceabstraction.trace.refinement.strategy CAMEL_SMT_AM -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/locks/test_locks_6.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-79ed534 [2020-07-20 03:36:57,927 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 03:36:57,930 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 03:36:57,944 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 03:36:57,945 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 03:36:57,946 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 03:36:57,947 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 03:36:57,949 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 03:36:57,951 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 03:36:57,952 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 03:36:57,953 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 03:36:57,954 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 03:36:57,955 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 03:36:57,956 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 03:36:57,957 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 03:36:57,958 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 03:36:57,959 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 03:36:57,960 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 03:36:57,961 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 03:36:57,963 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 03:36:57,965 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 03:36:57,966 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 03:36:57,967 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 03:36:57,968 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 03:36:57,971 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 03:36:57,978 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 03:36:57,979 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 03:36:57,980 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 03:36:57,981 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 03:36:57,998 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 03:36:57,998 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 03:36:58,000 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 03:36:58,000 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 03:36:58,000 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 03:36:58,000 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 03:36:58,001 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 03:36:58,001 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 03:36:58,001 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 03:36:58,001 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 03:36:58,001 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 03:36:58,002 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 03:36:58,002 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 03:36:58,002 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 03:36:58,002 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 03:36:58,002 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 03:36:58,003 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 03:36:58,003 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 03:36:58,003 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 03:36:58,003 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 03:36:58,003 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 03:36:58,004 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 03:36:58,004 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 03:36:58,004 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 03:36:58,004 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 03:36:58,004 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 03:36:58,005 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 03:36:58,005 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 03:36:58,005 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 03:36:58,005 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> DAGSIZE Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> CAMEL_SMT_AM [2020-07-20 03:36:58,328 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 03:36:58,344 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 03:36:58,349 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 03:36:58,351 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 03:36:58,351 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 03:36:58,352 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/locks/test_locks_6.c [2020-07-20 03:36:58,432 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/326f12e05/3340141c3df045c89cbec4e56747cd7e/FLAG9ef553cad [2020-07-20 03:36:59,030 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 03:36:59,031 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/locks/test_locks_6.c [2020-07-20 03:36:59,041 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/326f12e05/3340141c3df045c89cbec4e56747cd7e/FLAG9ef553cad [2020-07-20 03:36:59,343 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/326f12e05/3340141c3df045c89cbec4e56747cd7e [2020-07-20 03:36:59,357 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 03:36:59,361 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 03:36:59,362 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 03:36:59,362 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 03:36:59,367 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 03:36:59,368 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 03:36:59" (1/1) ... [2020-07-20 03:36:59,371 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25c002cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:36:59, skipping insertion in model container [2020-07-20 03:36:59,372 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 03:36:59" (1/1) ... [2020-07-20 03:36:59,381 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 03:36:59,409 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 03:36:59,602 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 03:36:59,609 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 03:36:59,661 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 03:36:59,678 INFO L208 MainTranslator]: Completed translation [2020-07-20 03:36:59,679 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:36:59 WrapperNode [2020-07-20 03:36:59,679 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 03:36:59,680 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 03:36:59,680 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 03:36:59,680 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 03:36:59,805 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:36:59" (1/1) ... [2020-07-20 03:36:59,805 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:36:59" (1/1) ... [2020-07-20 03:36:59,818 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:36:59" (1/1) ... [2020-07-20 03:36:59,819 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:36:59" (1/1) ... [2020-07-20 03:36:59,830 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:36:59" (1/1) ... [2020-07-20 03:36:59,838 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:36:59" (1/1) ... [2020-07-20 03:36:59,840 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:36:59" (1/1) ... [2020-07-20 03:36:59,842 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 03:36:59,843 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 03:36:59,843 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 03:36:59,843 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 03:36:59,844 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:36:59" (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 03:36:59,912 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 03:36:59,913 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 03:36:59,913 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 03:36:59,913 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 03:36:59,913 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 03:36:59,913 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 03:36:59,913 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 03:36:59,914 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 03:37:00,172 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 03:37:00,173 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-20 03:37:00,179 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 03:37:00 BoogieIcfgContainer [2020-07-20 03:37:00,179 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 03:37:00,181 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 03:37:00,181 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 03:37:00,185 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 03:37:00,186 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 03:36:59" (1/3) ... [2020-07-20 03:37:00,187 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@434ebcaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 03:37:00, skipping insertion in model container [2020-07-20 03:37:00,187 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:36:59" (2/3) ... [2020-07-20 03:37:00,187 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@434ebcaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 03:37:00, skipping insertion in model container [2020-07-20 03:37:00,187 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 03:37:00" (3/3) ... [2020-07-20 03:37:00,190 INFO L109 eAbstractionObserver]: Analyzing ICFG test_locks_6.c [2020-07-20 03:37:00,205 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-20 03:37:00,216 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 03:37:00,235 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 03:37:00,272 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 03:37:00,272 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 03:37:00,273 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-20 03:37:00,273 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 03:37:00,274 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 03:37:00,274 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 03:37:00,275 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 03:37:00,275 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 03:37:00,314 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2020-07-20 03:37:00,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-07-20 03:37:00,323 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:37:00,325 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 03:37:00,325 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:37:00,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:37:00,335 INFO L82 PathProgramCache]: Analyzing trace with hash 429652513, now seen corresponding path program 1 times [2020-07-20 03:37:00,348 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:37:00,349 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973032918] [2020-07-20 03:37:00,349 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@7a195cc1 [2020-07-20 03:37:00,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:37:00,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:37:00,579 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 03:37:00,580 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973032918] [2020-07-20 03:37:00,582 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 03:37:00,583 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 03:37:00,584 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928918623] [2020-07-20 03:37:00,592 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 03:37:00,594 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 03:37:00,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 03:37:00,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 03:37:00,614 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 3 states. [2020-07-20 03:37:00,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 03:37:00,696 INFO L93 Difference]: Finished difference Result 63 states and 102 transitions. [2020-07-20 03:37:00,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 03:37:00,699 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-07-20 03:37:00,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 03:37:00,713 INFO L225 Difference]: With dead ends: 63 [2020-07-20 03:37:00,714 INFO L226 Difference]: Without dead ends: 48 [2020-07-20 03:37:00,718 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 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 03:37:00,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-07-20 03:37:00,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 34. [2020-07-20 03:37:00,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-07-20 03:37:00,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 57 transitions. [2020-07-20 03:37:00,761 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 57 transitions. Word has length 16 [2020-07-20 03:37:00,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 03:37:00,761 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 57 transitions. [2020-07-20 03:37:00,761 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 03:37:00,762 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 57 transitions. [2020-07-20 03:37:00,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-07-20 03:37:00,763 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:37:00,763 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 03:37:00,764 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-20 03:37:00,764 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:37:00,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:37:00,765 INFO L82 PathProgramCache]: Analyzing trace with hash 1109710883, now seen corresponding path program 1 times [2020-07-20 03:37:00,765 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:37:00,765 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349775291] [2020-07-20 03:37:00,766 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@7a195cc1 [2020-07-20 03:37:00,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:37:00,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:37:00,826 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 03:37:00,827 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349775291] [2020-07-20 03:37:00,827 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 03:37:00,827 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 03:37:00,828 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854399898] [2020-07-20 03:37:00,829 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 03:37:00,830 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 03:37:00,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 03:37:00,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 03:37:00,831 INFO L87 Difference]: Start difference. First operand 34 states and 57 transitions. Second operand 3 states. [2020-07-20 03:37:00,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 03:37:00,859 INFO L93 Difference]: Finished difference Result 77 states and 132 transitions. [2020-07-20 03:37:00,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 03:37:00,860 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-07-20 03:37:00,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 03:37:00,862 INFO L225 Difference]: With dead ends: 77 [2020-07-20 03:37:00,862 INFO L226 Difference]: Without dead ends: 48 [2020-07-20 03:37:00,863 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 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 03:37:00,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-07-20 03:37:00,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 46. [2020-07-20 03:37:00,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-07-20 03:37:00,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 77 transitions. [2020-07-20 03:37:00,874 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 77 transitions. Word has length 16 [2020-07-20 03:37:00,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 03:37:00,874 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 77 transitions. [2020-07-20 03:37:00,874 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 03:37:00,875 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 77 transitions. [2020-07-20 03:37:00,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-07-20 03:37:00,876 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:37:00,876 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 03:37:00,876 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-20 03:37:00,876 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:37:00,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:37:00,877 INFO L82 PathProgramCache]: Analyzing trace with hash 434540691, now seen corresponding path program 1 times [2020-07-20 03:37:00,877 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:37:00,878 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972509498] [2020-07-20 03:37:00,878 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@7a195cc1 [2020-07-20 03:37:00,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:37:00,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:37:00,926 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 03:37:00,926 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972509498] [2020-07-20 03:37:00,927 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 03:37:00,927 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 03:37:00,927 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8842867] [2020-07-20 03:37:00,928 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 03:37:00,928 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 03:37:00,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 03:37:00,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 03:37:00,929 INFO L87 Difference]: Start difference. First operand 46 states and 77 transitions. Second operand 3 states. [2020-07-20 03:37:00,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 03:37:00,950 INFO L93 Difference]: Finished difference Result 72 states and 117 transitions. [2020-07-20 03:37:00,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 03:37:00,951 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-07-20 03:37:00,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 03:37:00,953 INFO L225 Difference]: With dead ends: 72 [2020-07-20 03:37:00,953 INFO L226 Difference]: Without dead ends: 51 [2020-07-20 03:37:00,954 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 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 03:37:00,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-07-20 03:37:00,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 49. [2020-07-20 03:37:00,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-07-20 03:37:00,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 79 transitions. [2020-07-20 03:37:00,964 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 79 transitions. Word has length 17 [2020-07-20 03:37:00,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 03:37:00,964 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 79 transitions. [2020-07-20 03:37:00,964 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 03:37:00,965 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 79 transitions. [2020-07-20 03:37:00,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-07-20 03:37:00,966 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:37:00,966 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 03:37:00,966 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-20 03:37:00,966 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:37:00,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:37:00,967 INFO L82 PathProgramCache]: Analyzing trace with hash 41513681, now seen corresponding path program 1 times [2020-07-20 03:37:00,967 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:37:00,968 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528574927] [2020-07-20 03:37:00,968 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@7a195cc1 [2020-07-20 03:37:00,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:37:01,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:37:01,042 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 03:37:01,043 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528574927] [2020-07-20 03:37:01,043 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 03:37:01,043 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 03:37:01,044 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862180776] [2020-07-20 03:37:01,044 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 03:37:01,045 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 03:37:01,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 03:37:01,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 03:37:01,046 INFO L87 Difference]: Start difference. First operand 49 states and 79 transitions. Second operand 3 states. [2020-07-20 03:37:01,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 03:37:01,075 INFO L93 Difference]: Finished difference Result 88 states and 144 transitions. [2020-07-20 03:37:01,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 03:37:01,079 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-07-20 03:37:01,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 03:37:01,080 INFO L225 Difference]: With dead ends: 88 [2020-07-20 03:37:01,081 INFO L226 Difference]: Without dead ends: 86 [2020-07-20 03:37:01,081 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 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 03:37:01,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-07-20 03:37:01,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 64. [2020-07-20 03:37:01,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-07-20 03:37:01,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 104 transitions. [2020-07-20 03:37:01,094 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 104 transitions. Word has length 17 [2020-07-20 03:37:01,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 03:37:01,095 INFO L479 AbstractCegarLoop]: Abstraction has 64 states and 104 transitions. [2020-07-20 03:37:01,095 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 03:37:01,095 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 104 transitions. [2020-07-20 03:37:01,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-07-20 03:37:01,096 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:37:01,096 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 03:37:01,097 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-20 03:37:01,097 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:37:01,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:37:01,098 INFO L82 PathProgramCache]: Analyzing trace with hash 721572051, now seen corresponding path program 1 times [2020-07-20 03:37:01,098 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:37:01,098 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702082001] [2020-07-20 03:37:01,098 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@7a195cc1 [2020-07-20 03:37:01,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:37:01,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:37:01,140 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 03:37:01,140 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702082001] [2020-07-20 03:37:01,141 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 03:37:01,141 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 03:37:01,141 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822766007] [2020-07-20 03:37:01,142 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 03:37:01,142 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 03:37:01,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 03:37:01,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 03:37:01,143 INFO L87 Difference]: Start difference. First operand 64 states and 104 transitions. Second operand 3 states. [2020-07-20 03:37:01,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 03:37:01,164 INFO L93 Difference]: Finished difference Result 144 states and 238 transitions. [2020-07-20 03:37:01,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 03:37:01,165 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-07-20 03:37:01,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 03:37:01,167 INFO L225 Difference]: With dead ends: 144 [2020-07-20 03:37:01,167 INFO L226 Difference]: Without dead ends: 88 [2020-07-20 03:37:01,168 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 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 03:37:01,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-07-20 03:37:01,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 86. [2020-07-20 03:37:01,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-07-20 03:37:01,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 138 transitions. [2020-07-20 03:37:01,180 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 138 transitions. Word has length 17 [2020-07-20 03:37:01,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 03:37:01,180 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 138 transitions. [2020-07-20 03:37:01,180 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 03:37:01,180 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 138 transitions. [2020-07-20 03:37:01,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-07-20 03:37:01,181 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:37:01,182 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 03:37:01,182 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-07-20 03:37:01,182 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:37:01,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:37:01,183 INFO L82 PathProgramCache]: Analyzing trace with hash 1287139128, now seen corresponding path program 1 times [2020-07-20 03:37:01,183 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:37:01,183 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26916293] [2020-07-20 03:37:01,184 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@7a195cc1 [2020-07-20 03:37:01,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:37:01,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:37:01,229 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 03:37:01,230 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26916293] [2020-07-20 03:37:01,230 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 03:37:01,230 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 03:37:01,231 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136298533] [2020-07-20 03:37:01,231 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 03:37:01,232 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 03:37:01,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 03:37:01,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 03:37:01,233 INFO L87 Difference]: Start difference. First operand 86 states and 138 transitions. Second operand 3 states. [2020-07-20 03:37:01,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 03:37:01,257 INFO L93 Difference]: Finished difference Result 129 states and 205 transitions. [2020-07-20 03:37:01,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 03:37:01,258 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-07-20 03:37:01,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 03:37:01,259 INFO L225 Difference]: With dead ends: 129 [2020-07-20 03:37:01,259 INFO L226 Difference]: Without dead ends: 90 [2020-07-20 03:37:01,261 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 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 03:37:01,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-07-20 03:37:01,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 88. [2020-07-20 03:37:01,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-07-20 03:37:01,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 138 transitions. [2020-07-20 03:37:01,272 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 138 transitions. Word has length 18 [2020-07-20 03:37:01,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 03:37:01,272 INFO L479 AbstractCegarLoop]: Abstraction has 88 states and 138 transitions. [2020-07-20 03:37:01,273 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 03:37:01,273 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 138 transitions. [2020-07-20 03:37:01,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-07-20 03:37:01,274 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:37:01,274 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 03:37:01,275 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-07-20 03:37:01,275 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:37:01,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:37:01,276 INFO L82 PathProgramCache]: Analyzing trace with hash 894112118, now seen corresponding path program 1 times [2020-07-20 03:37:01,276 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:37:01,276 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459137267] [2020-07-20 03:37:01,277 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@7a195cc1 [2020-07-20 03:37:01,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:37:01,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:37:01,325 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 03:37:01,327 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459137267] [2020-07-20 03:37:01,327 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 03:37:01,327 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 03:37:01,328 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490157017] [2020-07-20 03:37:01,330 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 03:37:01,330 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 03:37:01,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 03:37:01,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 03:37:01,331 INFO L87 Difference]: Start difference. First operand 88 states and 138 transitions. Second operand 3 states. [2020-07-20 03:37:01,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 03:37:01,355 INFO L93 Difference]: Finished difference Result 156 states and 248 transitions. [2020-07-20 03:37:01,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 03:37:01,355 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-07-20 03:37:01,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 03:37:01,358 INFO L225 Difference]: With dead ends: 156 [2020-07-20 03:37:01,358 INFO L226 Difference]: Without dead ends: 154 [2020-07-20 03:37:01,359 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 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 03:37:01,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-07-20 03:37:01,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 120. [2020-07-20 03:37:01,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-07-20 03:37:01,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 186 transitions. [2020-07-20 03:37:01,374 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 186 transitions. Word has length 18 [2020-07-20 03:37:01,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 03:37:01,374 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 186 transitions. [2020-07-20 03:37:01,374 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 03:37:01,375 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 186 transitions. [2020-07-20 03:37:01,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-07-20 03:37:01,376 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:37:01,376 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 03:37:01,377 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-07-20 03:37:01,377 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:37:01,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:37:01,378 INFO L82 PathProgramCache]: Analyzing trace with hash 1574170488, now seen corresponding path program 1 times [2020-07-20 03:37:01,378 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:37:01,378 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888056234] [2020-07-20 03:37:01,379 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@7a195cc1 [2020-07-20 03:37:01,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:37:01,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:37:01,407 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 03:37:01,407 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888056234] [2020-07-20 03:37:01,408 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 03:37:01,408 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 03:37:01,408 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935751179] [2020-07-20 03:37:01,409 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 03:37:01,409 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 03:37:01,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 03:37:01,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 03:37:01,410 INFO L87 Difference]: Start difference. First operand 120 states and 186 transitions. Second operand 3 states. [2020-07-20 03:37:01,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 03:37:01,432 INFO L93 Difference]: Finished difference Result 272 states and 424 transitions. [2020-07-20 03:37:01,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 03:37:01,433 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-07-20 03:37:01,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 03:37:01,435 INFO L225 Difference]: With dead ends: 272 [2020-07-20 03:37:01,435 INFO L226 Difference]: Without dead ends: 162 [2020-07-20 03:37:01,436 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 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 03:37:01,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-07-20 03:37:01,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 160. [2020-07-20 03:37:01,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-07-20 03:37:01,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 242 transitions. [2020-07-20 03:37:01,457 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 242 transitions. Word has length 18 [2020-07-20 03:37:01,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 03:37:01,457 INFO L479 AbstractCegarLoop]: Abstraction has 160 states and 242 transitions. [2020-07-20 03:37:01,457 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 03:37:01,458 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 242 transitions. [2020-07-20 03:37:01,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-07-20 03:37:01,460 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:37:01,461 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 03:37:01,461 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-07-20 03:37:01,461 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:37:01,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:37:01,462 INFO L82 PathProgramCache]: Analyzing trace with hash 1947887240, now seen corresponding path program 1 times [2020-07-20 03:37:01,464 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:37:01,464 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813256078] [2020-07-20 03:37:01,465 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@7a195cc1 [2020-07-20 03:37:01,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:37:01,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:37:01,517 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 03:37:01,518 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813256078] [2020-07-20 03:37:01,518 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 03:37:01,518 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 03:37:01,518 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874717466] [2020-07-20 03:37:01,519 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 03:37:01,519 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 03:37:01,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 03:37:01,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 03:37:01,520 INFO L87 Difference]: Start difference. First operand 160 states and 242 transitions. Second operand 3 states. [2020-07-20 03:37:01,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 03:37:01,571 INFO L93 Difference]: Finished difference Result 240 states and 360 transitions. [2020-07-20 03:37:01,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 03:37:01,571 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-07-20 03:37:01,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 03:37:01,573 INFO L225 Difference]: With dead ends: 240 [2020-07-20 03:37:01,573 INFO L226 Difference]: Without dead ends: 166 [2020-07-20 03:37:01,574 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 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 03:37:01,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-07-20 03:37:01,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 164. [2020-07-20 03:37:01,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-07-20 03:37:01,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 242 transitions. [2020-07-20 03:37:01,586 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 242 transitions. Word has length 19 [2020-07-20 03:37:01,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 03:37:01,587 INFO L479 AbstractCegarLoop]: Abstraction has 164 states and 242 transitions. [2020-07-20 03:37:01,587 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 03:37:01,587 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 242 transitions. [2020-07-20 03:37:01,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-07-20 03:37:01,588 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:37:01,589 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 03:37:01,589 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-07-20 03:37:01,589 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:37:01,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:37:01,590 INFO L82 PathProgramCache]: Analyzing trace with hash 1554860230, now seen corresponding path program 1 times [2020-07-20 03:37:01,590 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:37:01,590 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357978130] [2020-07-20 03:37:01,591 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@7a195cc1 [2020-07-20 03:37:01,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:37:01,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:37:01,615 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 03:37:01,615 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357978130] [2020-07-20 03:37:01,616 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 03:37:01,616 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 03:37:01,616 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728311875] [2020-07-20 03:37:01,617 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 03:37:01,617 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 03:37:01,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 03:37:01,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 03:37:01,618 INFO L87 Difference]: Start difference. First operand 164 states and 242 transitions. Second operand 3 states. [2020-07-20 03:37:01,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 03:37:01,638 INFO L93 Difference]: Finished difference Result 284 states and 424 transitions. [2020-07-20 03:37:01,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 03:37:01,638 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-07-20 03:37:01,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 03:37:01,640 INFO L225 Difference]: With dead ends: 284 [2020-07-20 03:37:01,641 INFO L226 Difference]: Without dead ends: 282 [2020-07-20 03:37:01,641 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 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 03:37:01,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2020-07-20 03:37:01,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 232. [2020-07-20 03:37:01,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232 states. [2020-07-20 03:37:01,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 334 transitions. [2020-07-20 03:37:01,657 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 334 transitions. Word has length 19 [2020-07-20 03:37:01,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 03:37:01,658 INFO L479 AbstractCegarLoop]: Abstraction has 232 states and 334 transitions. [2020-07-20 03:37:01,658 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 03:37:01,658 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 334 transitions. [2020-07-20 03:37:01,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-07-20 03:37:01,667 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:37:01,668 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 03:37:01,668 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-07-20 03:37:01,668 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:37:01,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:37:01,669 INFO L82 PathProgramCache]: Analyzing trace with hash -2060048696, now seen corresponding path program 1 times [2020-07-20 03:37:01,669 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:37:01,671 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358435296] [2020-07-20 03:37:01,671 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@7a195cc1 [2020-07-20 03:37:01,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:37:01,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:37:01,712 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 03:37:01,712 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358435296] [2020-07-20 03:37:01,713 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 03:37:01,713 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 03:37:01,713 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734503467] [2020-07-20 03:37:01,713 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 03:37:01,714 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 03:37:01,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 03:37:01,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 03:37:01,714 INFO L87 Difference]: Start difference. First operand 232 states and 334 transitions. Second operand 3 states. [2020-07-20 03:37:01,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 03:37:01,741 INFO L93 Difference]: Finished difference Result 524 states and 752 transitions. [2020-07-20 03:37:01,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 03:37:01,742 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-07-20 03:37:01,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 03:37:01,744 INFO L225 Difference]: With dead ends: 524 [2020-07-20 03:37:01,744 INFO L226 Difference]: Without dead ends: 306 [2020-07-20 03:37:01,746 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 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 03:37:01,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2020-07-20 03:37:01,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 304. [2020-07-20 03:37:01,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 304 states. [2020-07-20 03:37:01,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 422 transitions. [2020-07-20 03:37:01,770 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 422 transitions. Word has length 19 [2020-07-20 03:37:01,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 03:37:01,770 INFO L479 AbstractCegarLoop]: Abstraction has 304 states and 422 transitions. [2020-07-20 03:37:01,770 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 03:37:01,770 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 422 transitions. [2020-07-20 03:37:01,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-07-20 03:37:01,776 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:37:01,776 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] [2020-07-20 03:37:01,776 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-07-20 03:37:01,777 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:37:01,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:37:01,777 INFO L82 PathProgramCache]: Analyzing trace with hash 956242573, now seen corresponding path program 1 times [2020-07-20 03:37:01,777 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:37:01,778 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500463217] [2020-07-20 03:37:01,778 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@7a195cc1 [2020-07-20 03:37:01,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:37:01,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:37:01,816 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 03:37:01,816 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500463217] [2020-07-20 03:37:01,816 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 03:37:01,816 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 03:37:01,817 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323557202] [2020-07-20 03:37:01,817 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 03:37:01,817 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 03:37:01,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 03:37:01,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 03:37:01,818 INFO L87 Difference]: Start difference. First operand 304 states and 422 transitions. Second operand 3 states. [2020-07-20 03:37:01,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 03:37:01,855 INFO L93 Difference]: Finished difference Result 456 states and 628 transitions. [2020-07-20 03:37:01,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 03:37:01,855 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-07-20 03:37:01,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 03:37:01,860 INFO L225 Difference]: With dead ends: 456 [2020-07-20 03:37:01,860 INFO L226 Difference]: Without dead ends: 314 [2020-07-20 03:37:01,861 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 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 03:37:01,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2020-07-20 03:37:01,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 312. [2020-07-20 03:37:01,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 312 states. [2020-07-20 03:37:01,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 422 transitions. [2020-07-20 03:37:01,886 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 422 transitions. Word has length 20 [2020-07-20 03:37:01,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 03:37:01,887 INFO L479 AbstractCegarLoop]: Abstraction has 312 states and 422 transitions. [2020-07-20 03:37:01,887 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 03:37:01,887 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 422 transitions. [2020-07-20 03:37:01,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-07-20 03:37:01,888 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:37:01,889 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] [2020-07-20 03:37:01,889 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-07-20 03:37:01,889 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:37:01,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:37:01,889 INFO L82 PathProgramCache]: Analyzing trace with hash 563215563, now seen corresponding path program 1 times [2020-07-20 03:37:01,891 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:37:01,891 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232144482] [2020-07-20 03:37:01,891 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@7a195cc1 [2020-07-20 03:37:01,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:37:01,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:37:01,932 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 03:37:01,933 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232144482] [2020-07-20 03:37:01,933 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 03:37:01,933 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 03:37:01,935 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348681306] [2020-07-20 03:37:01,935 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 03:37:01,935 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 03:37:01,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 03:37:01,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 03:37:01,942 INFO L87 Difference]: Start difference. First operand 312 states and 422 transitions. Second operand 3 states. [2020-07-20 03:37:01,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 03:37:01,973 INFO L93 Difference]: Finished difference Result 524 states and 712 transitions. [2020-07-20 03:37:01,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 03:37:01,973 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-07-20 03:37:01,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 03:37:01,983 INFO L225 Difference]: With dead ends: 524 [2020-07-20 03:37:01,984 INFO L226 Difference]: Without dead ends: 522 [2020-07-20 03:37:01,985 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 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 03:37:01,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 522 states. [2020-07-20 03:37:02,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 522 to 456. [2020-07-20 03:37:02,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 456 states. [2020-07-20 03:37:02,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 456 states to 456 states and 598 transitions. [2020-07-20 03:37:02,004 INFO L78 Accepts]: Start accepts. Automaton has 456 states and 598 transitions. Word has length 20 [2020-07-20 03:37:02,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 03:37:02,004 INFO L479 AbstractCegarLoop]: Abstraction has 456 states and 598 transitions. [2020-07-20 03:37:02,004 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 03:37:02,004 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states and 598 transitions. [2020-07-20 03:37:02,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-07-20 03:37:02,008 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:37:02,008 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] [2020-07-20 03:37:02,009 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-07-20 03:37:02,009 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:37:02,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:37:02,009 INFO L82 PathProgramCache]: Analyzing trace with hash 1243273933, now seen corresponding path program 1 times [2020-07-20 03:37:02,009 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:37:02,014 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893076340] [2020-07-20 03:37:02,014 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@7a195cc1 [2020-07-20 03:37:02,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:37:02,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:37:02,042 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 03:37:02,042 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893076340] [2020-07-20 03:37:02,043 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 03:37:02,043 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 03:37:02,043 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252427538] [2020-07-20 03:37:02,043 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 03:37:02,044 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 03:37:02,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 03:37:02,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 03:37:02,045 INFO L87 Difference]: Start difference. First operand 456 states and 598 transitions. Second operand 3 states. [2020-07-20 03:37:02,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 03:37:02,082 INFO L93 Difference]: Finished difference Result 1020 states and 1320 transitions. [2020-07-20 03:37:02,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 03:37:02,083 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-07-20 03:37:02,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 03:37:02,087 INFO L225 Difference]: With dead ends: 1020 [2020-07-20 03:37:02,087 INFO L226 Difference]: Without dead ends: 586 [2020-07-20 03:37:02,090 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 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 03:37:02,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 586 states. [2020-07-20 03:37:02,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 586 to 584. [2020-07-20 03:37:02,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 584 states. [2020-07-20 03:37:02,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 584 states to 584 states and 726 transitions. [2020-07-20 03:37:02,115 INFO L78 Accepts]: Start accepts. Automaton has 584 states and 726 transitions. Word has length 20 [2020-07-20 03:37:02,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 03:37:02,116 INFO L479 AbstractCegarLoop]: Abstraction has 584 states and 726 transitions. [2020-07-20 03:37:02,116 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 03:37:02,116 INFO L276 IsEmpty]: Start isEmpty. Operand 584 states and 726 transitions. [2020-07-20 03:37:02,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-07-20 03:37:02,118 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:37:02,118 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] [2020-07-20 03:37:02,119 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-07-20 03:37:02,119 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:37:02,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:37:02,119 INFO L82 PathProgramCache]: Analyzing trace with hash 280029309, now seen corresponding path program 1 times [2020-07-20 03:37:02,119 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:37:02,120 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660623859] [2020-07-20 03:37:02,120 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@7a195cc1 [2020-07-20 03:37:02,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:37:02,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:37:02,150 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 03:37:02,151 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660623859] [2020-07-20 03:37:02,151 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 03:37:02,151 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 03:37:02,152 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717049087] [2020-07-20 03:37:02,152 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 03:37:02,152 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 03:37:02,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 03:37:02,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 03:37:02,153 INFO L87 Difference]: Start difference. First operand 584 states and 726 transitions. Second operand 3 states. [2020-07-20 03:37:02,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 03:37:02,182 INFO L93 Difference]: Finished difference Result 876 states and 1080 transitions. [2020-07-20 03:37:02,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 03:37:02,183 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-07-20 03:37:02,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 03:37:02,186 INFO L225 Difference]: With dead ends: 876 [2020-07-20 03:37:02,187 INFO L226 Difference]: Without dead ends: 602 [2020-07-20 03:37:02,189 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 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 03:37:02,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2020-07-20 03:37:02,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 600. [2020-07-20 03:37:02,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 600 states. [2020-07-20 03:37:02,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 600 states to 600 states and 726 transitions. [2020-07-20 03:37:02,212 INFO L78 Accepts]: Start accepts. Automaton has 600 states and 726 transitions. Word has length 21 [2020-07-20 03:37:02,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 03:37:02,212 INFO L479 AbstractCegarLoop]: Abstraction has 600 states and 726 transitions. [2020-07-20 03:37:02,212 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 03:37:02,212 INFO L276 IsEmpty]: Start isEmpty. Operand 600 states and 726 transitions. [2020-07-20 03:37:02,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-07-20 03:37:02,214 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:37:02,214 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] [2020-07-20 03:37:02,214 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-07-20 03:37:02,214 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:37:02,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:37:02,215 INFO L82 PathProgramCache]: Analyzing trace with hash -112997701, now seen corresponding path program 1 times [2020-07-20 03:37:02,215 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:37:02,215 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963652672] [2020-07-20 03:37:02,215 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@7a195cc1 [2020-07-20 03:37:02,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:37:02,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:37:02,244 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 03:37:02,244 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963652672] [2020-07-20 03:37:02,245 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 03:37:02,245 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 03:37:02,245 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924983461] [2020-07-20 03:37:02,245 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 03:37:02,246 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 03:37:02,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 03:37:02,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 03:37:02,246 INFO L87 Difference]: Start difference. First operand 600 states and 726 transitions. Second operand 3 states. [2020-07-20 03:37:02,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 03:37:02,282 INFO L93 Difference]: Finished difference Result 970 states and 1159 transitions. [2020-07-20 03:37:02,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 03:37:02,283 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-07-20 03:37:02,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 03:37:02,287 INFO L225 Difference]: With dead ends: 970 [2020-07-20 03:37:02,288 INFO L226 Difference]: Without dead ends: 968 [2020-07-20 03:37:02,288 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 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 03:37:02,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 968 states. [2020-07-20 03:37:02,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 968 to 904. [2020-07-20 03:37:02,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 904 states. [2020-07-20 03:37:02,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 904 states to 904 states and 1062 transitions. [2020-07-20 03:37:02,319 INFO L78 Accepts]: Start accepts. Automaton has 904 states and 1062 transitions. Word has length 21 [2020-07-20 03:37:02,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 03:37:02,319 INFO L479 AbstractCegarLoop]: Abstraction has 904 states and 1062 transitions. [2020-07-20 03:37:02,320 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 03:37:02,320 INFO L276 IsEmpty]: Start isEmpty. Operand 904 states and 1062 transitions. [2020-07-20 03:37:02,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-07-20 03:37:02,322 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:37:02,322 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] [2020-07-20 03:37:02,323 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-07-20 03:37:02,323 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:37:02,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:37:02,323 INFO L82 PathProgramCache]: Analyzing trace with hash 567060669, now seen corresponding path program 1 times [2020-07-20 03:37:02,324 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:37:02,324 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077189123] [2020-07-20 03:37:02,324 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@7a195cc1 [2020-07-20 03:37:02,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:37:02,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:37:02,342 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 03:37:02,343 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077189123] [2020-07-20 03:37:02,343 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 03:37:02,343 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 03:37:02,343 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522372862] [2020-07-20 03:37:02,344 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 03:37:02,344 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 03:37:02,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 03:37:02,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 03:37:02,345 INFO L87 Difference]: Start difference. First operand 904 states and 1062 transitions. Second operand 3 states. [2020-07-20 03:37:02,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 03:37:02,386 INFO L93 Difference]: Finished difference Result 1992 states and 2278 transitions. [2020-07-20 03:37:02,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 03:37:02,387 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-07-20 03:37:02,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 03:37:02,387 INFO L225 Difference]: With dead ends: 1992 [2020-07-20 03:37:02,388 INFO L226 Difference]: Without dead ends: 0 [2020-07-20 03:37:02,391 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 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 03:37:02,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-20 03:37:02,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-20 03:37:02,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-20 03:37:02,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-20 03:37:02,392 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2020-07-20 03:37:02,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 03:37:02,393 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-20 03:37:02,393 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 03:37:02,393 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-20 03:37:02,393 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-20 03:37:02,393 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-07-20 03:37:02,396 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-20 03:37:02,423 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-07-20 03:37:02,424 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-20 03:37:02,424 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-20 03:37:02,424 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-20 03:37:02,424 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-20 03:37:02,424 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-20 03:37:02,424 INFO L268 CegarLoopResult]: For program point L93(line 93) no Hoare annotation was computed. [2020-07-20 03:37:02,425 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 4 107) no Hoare annotation was computed. [2020-07-20 03:37:02,425 INFO L268 CegarLoopResult]: For program point L77-1(lines 27 102) no Hoare annotation was computed. [2020-07-20 03:37:02,425 INFO L268 CegarLoopResult]: For program point L78(line 78) no Hoare annotation was computed. [2020-07-20 03:37:02,425 INFO L271 CegarLoopResult]: At program point L103(lines 5 107) the Hoare annotation is: true [2020-07-20 03:37:02,427 INFO L268 CegarLoopResult]: For program point L29(lines 29 31) no Hoare annotation was computed. [2020-07-20 03:37:02,427 INFO L268 CegarLoopResult]: For program point L62-1(lines 27 102) no Hoare annotation was computed. [2020-07-20 03:37:02,427 INFO L268 CegarLoopResult]: For program point L87-1(lines 27 102) no Hoare annotation was computed. [2020-07-20 03:37:02,427 INFO L268 CegarLoopResult]: For program point L54-1(lines 27 102) no Hoare annotation was computed. [2020-07-20 03:37:02,427 INFO L268 CegarLoopResult]: For program point L46(lines 46 48) no Hoare annotation was computed. [2020-07-20 03:37:02,427 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 4 107) no Hoare annotation was computed. [2020-07-20 03:37:02,428 INFO L268 CegarLoopResult]: For program point L46-2(lines 27 102) no Hoare annotation was computed. [2020-07-20 03:37:02,428 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 105) no Hoare annotation was computed. [2020-07-20 03:37:02,429 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 4 107) the Hoare annotation is: true [2020-07-20 03:37:02,429 INFO L268 CegarLoopResult]: For program point L88(line 88) no Hoare annotation was computed. [2020-07-20 03:37:02,429 INFO L268 CegarLoopResult]: For program point L72-1(lines 27 102) no Hoare annotation was computed. [2020-07-20 03:37:02,429 INFO L271 CegarLoopResult]: At program point L97-1(lines 27 102) the Hoare annotation is: true [2020-07-20 03:37:02,429 INFO L268 CegarLoopResult]: For program point L73(line 73) no Hoare annotation was computed. [2020-07-20 03:37:02,429 INFO L268 CegarLoopResult]: For program point L98(line 98) no Hoare annotation was computed. [2020-07-20 03:37:02,430 INFO L264 CegarLoopResult]: At program point L98-1(lines 5 107) the Hoare annotation is: false [2020-07-20 03:37:02,430 INFO L268 CegarLoopResult]: For program point L82-1(lines 27 102) no Hoare annotation was computed. [2020-07-20 03:37:02,430 INFO L268 CegarLoopResult]: For program point L66-1(lines 27 102) no Hoare annotation was computed. [2020-07-20 03:37:02,430 INFO L268 CegarLoopResult]: For program point L58-1(lines 27 102) no Hoare annotation was computed. [2020-07-20 03:37:02,430 INFO L268 CegarLoopResult]: For program point L83(line 83) no Hoare annotation was computed. [2020-07-20 03:37:02,430 INFO L268 CegarLoopResult]: For program point L50-1(lines 27 102) no Hoare annotation was computed. [2020-07-20 03:37:02,430 INFO L268 CegarLoopResult]: For program point L92-1(lines 27 102) no Hoare annotation was computed. [2020-07-20 03:37:02,441 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 03:37:02 BoogieIcfgContainer [2020-07-20 03:37:02,441 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 03:37:02,445 INFO L168 Benchmark]: Toolchain (without parser) took 3084.60 ms. Allocated memory was 134.7 MB in the beginning and 224.9 MB in the end (delta: 90.2 MB). Free memory was 99.5 MB in the beginning and 77.3 MB in the end (delta: 22.1 MB). Peak memory consumption was 112.3 MB. Max. memory is 7.1 GB. [2020-07-20 03:37:02,445 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 134.7 MB. Free memory was 117.8 MB in the beginning and 117.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-20 03:37:02,446 INFO L168 Benchmark]: CACSL2BoogieTranslator took 317.22 ms. Allocated memory is still 134.7 MB. Free memory was 99.2 MB in the beginning and 89.0 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. [2020-07-20 03:37:02,447 INFO L168 Benchmark]: Boogie Preprocessor took 162.46 ms. Allocated memory was 134.7 MB in the beginning and 199.2 MB in the end (delta: 64.5 MB). Free memory was 89.0 MB in the beginning and 177.3 MB in the end (delta: -88.2 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. [2020-07-20 03:37:02,448 INFO L168 Benchmark]: RCFGBuilder took 336.57 ms. Allocated memory is still 199.2 MB. Free memory was 177.3 MB in the beginning and 161.5 MB in the end (delta: 15.7 MB). Peak memory consumption was 15.7 MB. Max. memory is 7.1 GB. [2020-07-20 03:37:02,448 INFO L168 Benchmark]: TraceAbstraction took 2260.33 ms. Allocated memory was 199.2 MB in the beginning and 224.9 MB in the end (delta: 25.7 MB). Free memory was 160.8 MB in the beginning and 77.3 MB in the end (delta: 83.5 MB). Peak memory consumption was 109.2 MB. Max. memory is 7.1 GB. [2020-07-20 03:37:02,452 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 134.7 MB. Free memory was 117.8 MB in the beginning and 117.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 317.22 ms. Allocated memory is still 134.7 MB. Free memory was 99.2 MB in the beginning and 89.0 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 162.46 ms. Allocated memory was 134.7 MB in the beginning and 199.2 MB in the end (delta: 64.5 MB). Free memory was 89.0 MB in the beginning and 177.3 MB in the end (delta: -88.2 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 336.57 ms. Allocated memory is still 199.2 MB. Free memory was 177.3 MB in the beginning and 161.5 MB in the end (delta: 15.7 MB). Peak memory consumption was 15.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2260.33 ms. Allocated memory was 199.2 MB in the beginning and 224.9 MB in the end (delta: 25.7 MB). Free memory was 160.8 MB in the beginning and 77.3 MB in the end (delta: 83.5 MB). Peak memory consumption was 109.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 105]: 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: 5]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 5]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 32 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.1s, OverallIterations: 17, TraceHistogramMax: 1, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 923 SDtfs, 417 SDslu, 612 SDs, 0 SdLazy, 91 SolverSat, 17 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 85 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=904occurred in iteration=16, 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, 17 MinimizatonAttempts, 270 StatesRemovedByMinimization, 16 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 74 NumberOfFragments, 7 HoareAnnotationTreeSize, 7 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 317 NumberOfCodeBlocks, 317 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 300 ConstructedInterpolants, 0 QuantifiedInterpolants, 9690 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 17 InterpolantComputations, 17 PerfectInterpolantSequences, 0/0 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...