/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic NUM_VARIABLES --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 2 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ssh-simplified/s3_srvr_1a.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 16:15:52,278 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 16:15:52,282 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 16:15:52,302 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 16:15:52,303 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 16:15:52,305 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 16:15:52,307 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 16:15:52,317 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 16:15:52,323 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 16:15:52,324 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 16:15:52,325 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 16:15:52,329 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 16:15:52,329 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 16:15:52,330 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 16:15:52,332 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 16:15:52,333 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 16:15:52,334 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 16:15:52,335 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 16:15:52,336 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 16:15:52,338 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 16:15:52,339 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 16:15:52,340 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 16:15:52,341 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 16:15:52,342 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 16:15:52,344 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 16:15:52,352 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 16:15:52,352 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 16:15:52,353 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 16:15:52,354 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-21 16:15:52,368 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 16:15:52,369 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 16:15:52,370 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 16:15:52,370 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 16:15:52,371 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 16:15:52,371 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 16:15:52,371 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 16:15:52,371 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 16:15:52,371 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 16:15:52,372 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 16:15:52,372 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 16:15:52,372 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 16:15:52,372 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 16:15:52,372 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 16:15:52,372 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 16:15:52,373 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 16:15:52,373 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 16:15:52,373 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 16:15:52,373 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 16:15:52,373 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 16:15:52,374 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 16:15:52,374 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 16:15:52,374 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 16:15:52,374 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 16:15:52,375 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 16:15:52,375 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 16:15:52,375 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:15:52,375 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 16:15:52,375 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 16:15:52,376 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> SMT_FEATURE_HEURISTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> NUM_VARIABLES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 2 [2020-07-21 16:15:52,667 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 16:15:52,681 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 16:15:52,684 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 16:15:52,685 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 16:15:52,686 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 16:15:52,686 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh-simplified/s3_srvr_1a.cil.c [2020-07-21 16:15:52,751 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bf278bd38/c797397eaa574582aab3bcc158bbb52b/FLAG9dc58b971 [2020-07-21 16:15:53,235 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 16:15:53,237 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ssh-simplified/s3_srvr_1a.cil.c [2020-07-21 16:15:53,253 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bf278bd38/c797397eaa574582aab3bcc158bbb52b/FLAG9dc58b971 [2020-07-21 16:15:53,618 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bf278bd38/c797397eaa574582aab3bcc158bbb52b [2020-07-21 16:15:53,629 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 16:15:53,633 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 16:15:53,634 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 16:15:53,634 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 16:15:53,638 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 16:15:53,639 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 04:15:53" (1/1) ... [2020-07-21 16:15:53,642 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a79ccb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:15:53, skipping insertion in model container [2020-07-21 16:15:53,642 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 04:15:53" (1/1) ... [2020-07-21 16:15:53,650 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 16:15:53,677 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 16:15:53,874 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 16:15:53,879 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 16:15:53,906 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 16:15:54,011 INFO L208 MainTranslator]: Completed translation [2020-07-21 16:15:54,011 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:15:54 WrapperNode [2020-07-21 16:15:54,012 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 16:15:54,012 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 16:15:54,012 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 16:15:54,013 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 16:15:54,026 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:15:54" (1/1) ... [2020-07-21 16:15:54,026 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:15:54" (1/1) ... [2020-07-21 16:15:54,033 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:15:54" (1/1) ... [2020-07-21 16:15:54,033 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:15:54" (1/1) ... [2020-07-21 16:15:54,038 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:15:54" (1/1) ... [2020-07-21 16:15:54,045 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:15:54" (1/1) ... [2020-07-21 16:15:54,047 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:15:54" (1/1) ... [2020-07-21 16:15:54,049 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 16:15:54,050 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 16:15:54,050 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 16:15:54,050 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 16:15:54,051 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:15:54" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 16:15:54,120 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 16:15:54,120 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 16:15:54,121 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 16:15:54,121 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 16:15:54,121 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-07-21 16:15:54,121 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 16:15:54,121 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-07-21 16:15:54,121 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 16:15:54,122 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 16:15:54,122 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 16:15:54,505 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 16:15:54,506 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-21 16:15:54,510 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 04:15:54 BoogieIcfgContainer [2020-07-21 16:15:54,510 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 16:15:54,511 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 16:15:54,511 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 16:15:54,514 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 16:15:54,515 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 04:15:53" (1/3) ... [2020-07-21 16:15:54,516 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cdab114 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 04:15:54, skipping insertion in model container [2020-07-21 16:15:54,516 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:15:54" (2/3) ... [2020-07-21 16:15:54,516 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cdab114 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 04:15:54, skipping insertion in model container [2020-07-21 16:15:54,516 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 04:15:54" (3/3) ... [2020-07-21 16:15:54,518 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_srvr_1a.cil.c [2020-07-21 16:15:54,529 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 16:15:54,536 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 16:15:54,550 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 16:15:54,575 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 16:15:54,576 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 16:15:54,576 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 16:15:54,576 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 16:15:54,576 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 16:15:54,576 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 16:15:54,576 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 16:15:54,577 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 16:15:54,601 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states. [2020-07-21 16:15:54,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-07-21 16:15:54,608 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 16:15:54,609 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 16:15:54,610 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 16:15:54,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 16:15:54,615 INFO L82 PathProgramCache]: Analyzing trace with hash 2008919768, now seen corresponding path program 1 times [2020-07-21 16:15:54,621 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 16:15:54,621 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [960516045] [2020-07-21 16:15:54,622 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:15:54,682 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 16:15:54,682 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 16:15:54,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 16:15:54,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 16:15:54,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 16:15:54,734 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 16:15:54,735 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [960516045] [2020-07-21 16:15:54,735 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 16:15:54,736 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 16:15:54,736 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410589938] [2020-07-21 16:15:54,741 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 16:15:54,741 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 16:15:54,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 16:15:54,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 16:15:54,754 INFO L87 Difference]: Start difference. First operand 50 states. Second operand 3 states. [2020-07-21 16:15:54,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 16:15:54,880 INFO L93 Difference]: Finished difference Result 136 states and 224 transitions. [2020-07-21 16:15:54,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 16:15:54,882 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-07-21 16:15:54,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 16:15:54,895 INFO L225 Difference]: With dead ends: 136 [2020-07-21 16:15:54,896 INFO L226 Difference]: Without dead ends: 83 [2020-07-21 16:15:54,900 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 16:15:54,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-07-21 16:15:54,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2020-07-21 16:15:54,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-07-21 16:15:54,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 126 transitions. [2020-07-21 16:15:54,953 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 126 transitions. Word has length 8 [2020-07-21 16:15:54,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 16:15:54,953 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 126 transitions. [2020-07-21 16:15:54,954 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 16:15:54,954 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 126 transitions. [2020-07-21 16:15:54,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-07-21 16:15:54,955 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 16:15:54,955 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 16:15:55,157 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:15:55,158 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 16:15:55,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 16:15:55,159 INFO L82 PathProgramCache]: Analyzing trace with hash 2066454160, now seen corresponding path program 1 times [2020-07-21 16:15:55,159 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 16:15:55,160 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [639288671] [2020-07-21 16:15:55,160 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:15:55,198 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 16:15:55,198 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 16:15:55,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 16:15:55,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 16:15:55,212 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 16:15:55,212 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 16:15:55,212 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [639288671] [2020-07-21 16:15:55,213 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 16:15:55,213 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 16:15:55,213 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290267102] [2020-07-21 16:15:55,215 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 16:15:55,216 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 16:15:55,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 16:15:55,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 16:15:55,217 INFO L87 Difference]: Start difference. First operand 83 states and 126 transitions. Second operand 3 states. [2020-07-21 16:15:55,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 16:15:55,312 INFO L93 Difference]: Finished difference Result 161 states and 253 transitions. [2020-07-21 16:15:55,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 16:15:55,312 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2020-07-21 16:15:55,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 16:15:55,314 INFO L225 Difference]: With dead ends: 161 [2020-07-21 16:15:55,315 INFO L226 Difference]: Without dead ends: 121 [2020-07-21 16:15:55,316 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 16:15:55,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2020-07-21 16:15:55,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2020-07-21 16:15:55,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-07-21 16:15:55,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 184 transitions. [2020-07-21 16:15:55,339 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 184 transitions. Word has length 13 [2020-07-21 16:15:55,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 16:15:55,339 INFO L479 AbstractCegarLoop]: Abstraction has 121 states and 184 transitions. [2020-07-21 16:15:55,339 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 16:15:55,339 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 184 transitions. [2020-07-21 16:15:55,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-07-21 16:15:55,341 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 16:15:55,341 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 16:15:55,553 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:15:55,554 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 16:15:55,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 16:15:55,555 INFO L82 PathProgramCache]: Analyzing trace with hash -1216248382, now seen corresponding path program 1 times [2020-07-21 16:15:55,556 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 16:15:55,557 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1484625046] [2020-07-21 16:15:55,558 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:15:55,608 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 16:15:55,608 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 16:15:55,611 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 16:15:55,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 16:15:55,624 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-07-21 16:15:55,624 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 16:15:55,625 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1484625046] [2020-07-21 16:15:55,625 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 16:15:55,625 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 16:15:55,627 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333880317] [2020-07-21 16:15:55,628 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 16:15:55,628 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 16:15:55,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 16:15:55,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 16:15:55,629 INFO L87 Difference]: Start difference. First operand 121 states and 184 transitions. Second operand 3 states. [2020-07-21 16:15:55,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 16:15:55,704 INFO L93 Difference]: Finished difference Result 237 states and 369 transitions. [2020-07-21 16:15:55,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 16:15:55,705 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-07-21 16:15:55,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 16:15:55,708 INFO L225 Difference]: With dead ends: 237 [2020-07-21 16:15:55,708 INFO L226 Difference]: Without dead ends: 159 [2020-07-21 16:15:55,709 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 16:15:55,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-07-21 16:15:55,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2020-07-21 16:15:55,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-07-21 16:15:55,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 243 transitions. [2020-07-21 16:15:55,734 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 243 transitions. Word has length 19 [2020-07-21 16:15:55,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 16:15:55,735 INFO L479 AbstractCegarLoop]: Abstraction has 159 states and 243 transitions. [2020-07-21 16:15:55,735 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 16:15:55,735 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 243 transitions. [2020-07-21 16:15:55,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-07-21 16:15:55,737 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 16:15:55,737 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 16:15:55,946 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:15:55,947 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 16:15:55,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 16:15:55,948 INFO L82 PathProgramCache]: Analyzing trace with hash -1623728883, now seen corresponding path program 1 times [2020-07-21 16:15:55,948 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 16:15:55,949 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [954615178] [2020-07-21 16:15:55,949 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:15:55,988 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 16:15:55,989 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 16:15:55,990 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 16:15:55,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 16:15:56,018 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-07-21 16:15:56,019 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 16:15:56,019 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [954615178] [2020-07-21 16:15:56,019 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 16:15:56,020 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 16:15:56,020 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100586082] [2020-07-21 16:15:56,023 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 16:15:56,023 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 16:15:56,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 16:15:56,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 16:15:56,024 INFO L87 Difference]: Start difference. First operand 159 states and 243 transitions. Second operand 3 states. [2020-07-21 16:15:56,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 16:15:56,156 INFO L93 Difference]: Finished difference Result 371 states and 583 transitions. [2020-07-21 16:15:56,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 16:15:56,157 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 34 [2020-07-21 16:15:56,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 16:15:56,159 INFO L225 Difference]: With dead ends: 371 [2020-07-21 16:15:56,160 INFO L226 Difference]: Without dead ends: 217 [2020-07-21 16:15:56,161 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 16:15:56,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2020-07-21 16:15:56,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 211. [2020-07-21 16:15:56,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2020-07-21 16:15:56,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 295 transitions. [2020-07-21 16:15:56,186 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 295 transitions. Word has length 34 [2020-07-21 16:15:56,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 16:15:56,187 INFO L479 AbstractCegarLoop]: Abstraction has 211 states and 295 transitions. [2020-07-21 16:15:56,187 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 16:15:56,187 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 295 transitions. [2020-07-21 16:15:56,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-07-21 16:15:56,193 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 16:15:56,193 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 16:15:56,411 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:15:56,411 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 16:15:56,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 16:15:56,412 INFO L82 PathProgramCache]: Analyzing trace with hash 1694730092, now seen corresponding path program 1 times [2020-07-21 16:15:56,413 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 16:15:56,414 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [362265774] [2020-07-21 16:15:56,414 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:15:56,455 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 16:15:56,456 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 16:15:56,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 16:15:56,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 16:15:56,482 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-07-21 16:15:56,483 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 16:15:56,483 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [362265774] [2020-07-21 16:15:56,483 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 16:15:56,484 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 16:15:56,484 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719199124] [2020-07-21 16:15:56,485 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 16:15:56,485 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 16:15:56,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 16:15:56,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 16:15:56,486 INFO L87 Difference]: Start difference. First operand 211 states and 295 transitions. Second operand 3 states. [2020-07-21 16:15:56,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 16:15:56,547 INFO L93 Difference]: Finished difference Result 419 states and 592 transitions. [2020-07-21 16:15:56,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 16:15:56,548 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 48 [2020-07-21 16:15:56,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 16:15:56,550 INFO L225 Difference]: With dead ends: 419 [2020-07-21 16:15:56,551 INFO L226 Difference]: Without dead ends: 264 [2020-07-21 16:15:56,552 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 16:15:56,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2020-07-21 16:15:56,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 262. [2020-07-21 16:15:56,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262 states. [2020-07-21 16:15:56,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 369 transitions. [2020-07-21 16:15:56,574 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 369 transitions. Word has length 48 [2020-07-21 16:15:56,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 16:15:56,574 INFO L479 AbstractCegarLoop]: Abstraction has 262 states and 369 transitions. [2020-07-21 16:15:56,574 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 16:15:56,575 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 369 transitions. [2020-07-21 16:15:56,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-07-21 16:15:56,577 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 16:15:56,577 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 16:15:56,791 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:15:56,791 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 16:15:56,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 16:15:56,791 INFO L82 PathProgramCache]: Analyzing trace with hash 365198397, now seen corresponding path program 1 times [2020-07-21 16:15:56,792 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 16:15:56,792 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1854433810] [2020-07-21 16:15:56,792 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:15:56,835 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 16:15:56,835 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 16:15:56,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 16:15:56,838 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 16:15:56,853 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-07-21 16:15:56,854 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 16:15:56,854 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1854433810] [2020-07-21 16:15:56,855 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 16:15:56,855 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 16:15:56,855 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233704361] [2020-07-21 16:15:56,855 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 16:15:56,856 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 16:15:56,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 16:15:56,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 16:15:56,857 INFO L87 Difference]: Start difference. First operand 262 states and 369 transitions. Second operand 3 states. [2020-07-21 16:15:56,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 16:15:56,969 INFO L93 Difference]: Finished difference Result 527 states and 756 transitions. [2020-07-21 16:15:56,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 16:15:56,970 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 51 [2020-07-21 16:15:56,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 16:15:56,971 INFO L225 Difference]: With dead ends: 527 [2020-07-21 16:15:56,972 INFO L226 Difference]: Without dead ends: 192 [2020-07-21 16:15:56,973 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 16:15:56,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2020-07-21 16:15:56,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 189. [2020-07-21 16:15:56,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2020-07-21 16:15:56,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 248 transitions. [2020-07-21 16:15:56,986 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 248 transitions. Word has length 51 [2020-07-21 16:15:56,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 16:15:56,987 INFO L479 AbstractCegarLoop]: Abstraction has 189 states and 248 transitions. [2020-07-21 16:15:56,987 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 16:15:56,987 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 248 transitions. [2020-07-21 16:15:56,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-07-21 16:15:56,990 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 16:15:56,990 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 16:15:57,203 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:15:57,204 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 16:15:57,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 16:15:57,205 INFO L82 PathProgramCache]: Analyzing trace with hash 1939547864, now seen corresponding path program 1 times [2020-07-21 16:15:57,205 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 16:15:57,205 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1401279446] [2020-07-21 16:15:57,206 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:15:57,249 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 16:15:57,250 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 16:15:57,250 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-21 16:15:57,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 16:15:57,273 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-07-21 16:15:57,274 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 16:15:57,274 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1401279446] [2020-07-21 16:15:57,275 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 16:15:57,275 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 16:15:57,275 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563093555] [2020-07-21 16:15:57,276 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 16:15:57,276 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 16:15:57,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 16:15:57,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 16:15:57,277 INFO L87 Difference]: Start difference. First operand 189 states and 248 transitions. Second operand 3 states. [2020-07-21 16:15:57,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 16:15:57,294 INFO L93 Difference]: Finished difference Result 310 states and 379 transitions. [2020-07-21 16:15:57,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 16:15:57,295 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 79 [2020-07-21 16:15:57,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 16:15:57,296 INFO L225 Difference]: With dead ends: 310 [2020-07-21 16:15:57,296 INFO L226 Difference]: Without dead ends: 0 [2020-07-21 16:15:57,297 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 16:15:57,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-21 16:15:57,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-21 16:15:57,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-21 16:15:57,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-21 16:15:57,298 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 79 [2020-07-21 16:15:57,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 16:15:57,299 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-21 16:15:57,299 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 16:15:57,299 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-21 16:15:57,299 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-21 16:15:57,510 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:15:57,513 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-21 16:15:57,937 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-07-21 16:15:57,937 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-21 16:15:57,937 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-21 16:15:57,937 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-21 16:15:57,937 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-21 16:15:57,937 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-21 16:15:57,937 INFO L268 CegarLoopResult]: For program point L60(lines 60 189) no Hoare annotation was computed. [2020-07-21 16:15:57,937 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 8 217) no Hoare annotation was computed. [2020-07-21 16:15:57,938 INFO L268 CegarLoopResult]: For program point L151-1(lines 74 183) no Hoare annotation was computed. [2020-07-21 16:15:57,938 INFO L268 CegarLoopResult]: For program point L52(lines 52 193) no Hoare annotation was computed. [2020-07-21 16:15:57,938 INFO L268 CegarLoopResult]: For program point L85-1(lines 74 183) no Hoare annotation was computed. [2020-07-21 16:15:57,938 INFO L264 CegarLoopResult]: At program point L176(lines 22 211) the Hoare annotation is: (let ((.cse0 (<= main_~blastFlag~0 3))) (or (and (not (= 0 main_~s__hit~0)) .cse0 (<= 8640 main_~s__state~0)) (and (<= 8672 main_~s__state~0) .cse0) (<= main_~blastFlag~0 2))) [2020-07-21 16:15:57,938 INFO L268 CegarLoopResult]: For program point L44(lines 44 197) no Hoare annotation was computed. [2020-07-21 16:15:57,938 INFO L268 CegarLoopResult]: For program point L135(lines 135 139) no Hoare annotation was computed. [2020-07-21 16:15:57,939 INFO L264 CegarLoopResult]: At program point L69(lines 68 185) the Hoare annotation is: (let ((.cse0 (<= 8640 main_~s__state~0))) (or (and (<= main_~blastFlag~0 2) .cse0) (and (not (= 0 main_~s__hit~0)) (<= main_~blastFlag~0 3) .cse0))) [2020-07-21 16:15:57,939 INFO L268 CegarLoopResult]: For program point L36(lines 36 201) no Hoare annotation was computed. [2020-07-21 16:15:57,939 INFO L264 CegarLoopResult]: At program point L61(lines 60 189) the Hoare annotation is: (<= main_~blastFlag~0 2) [2020-07-21 16:15:57,939 INFO L264 CegarLoopResult]: At program point L53(lines 52 193) the Hoare annotation is: (<= main_~blastFlag~0 2) [2020-07-21 16:15:57,939 INFO L264 CegarLoopResult]: At program point L45(lines 44 197) the Hoare annotation is: (<= main_~blastFlag~0 2) [2020-07-21 16:15:57,939 INFO L268 CegarLoopResult]: For program point L78-1(lines 78 80) no Hoare annotation was computed. [2020-07-21 16:15:57,939 INFO L268 CegarLoopResult]: For program point L169-1(lines 74 183) no Hoare annotation was computed. [2020-07-21 16:15:57,939 INFO L264 CegarLoopResult]: At program point L37(lines 36 201) the Hoare annotation is: (<= main_~blastFlag~0 2) [2020-07-21 16:15:57,939 INFO L268 CegarLoopResult]: For program point L29(lines 29 204) no Hoare annotation was computed. [2020-07-21 16:15:57,940 INFO L264 CegarLoopResult]: At program point L120(lines 113 122) the Hoare annotation is: (<= main_~blastFlag~0 2) [2020-07-21 16:15:57,940 INFO L264 CegarLoopResult]: At program point L112(lines 105 123) the Hoare annotation is: (<= main_~blastFlag~0 2) [2020-07-21 16:15:57,940 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 8 217) no Hoare annotation was computed. [2020-07-21 16:15:57,940 INFO L268 CegarLoopResult]: For program point L162-1(lines 162 164) no Hoare annotation was computed. [2020-07-21 16:15:57,940 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 215) no Hoare annotation was computed. [2020-07-21 16:15:57,941 INFO L264 CegarLoopResult]: At program point L30(lines 29 204) the Hoare annotation is: (<= main_~blastFlag~0 2) [2020-07-21 16:15:57,941 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 8 217) the Hoare annotation is: true [2020-07-21 16:15:57,941 INFO L268 CegarLoopResult]: For program point L105(lines 105 123) no Hoare annotation was computed. [2020-07-21 16:15:57,941 INFO L268 CegarLoopResult]: For program point L72(lines 72 183) no Hoare annotation was computed. [2020-07-21 16:15:57,941 INFO L268 CegarLoopResult]: For program point L64(lines 64 187) no Hoare annotation was computed. [2020-07-21 16:15:57,941 INFO L268 CegarLoopResult]: For program point L56(lines 56 191) no Hoare annotation was computed. [2020-07-21 16:15:57,941 INFO L268 CegarLoopResult]: For program point L23(line 23) no Hoare annotation was computed. [2020-07-21 16:15:57,942 INFO L271 CegarLoopResult]: At program point L213(lines 8 217) the Hoare annotation is: true [2020-07-21 16:15:57,942 INFO L268 CegarLoopResult]: For program point L114(lines 114 118) no Hoare annotation was computed. [2020-07-21 16:15:57,942 INFO L268 CegarLoopResult]: For program point L48(lines 48 195) no Hoare annotation was computed. [2020-07-21 16:15:57,942 INFO L268 CegarLoopResult]: For program point L172(lines 172 174) no Hoare annotation was computed. [2020-07-21 16:15:57,942 INFO L268 CegarLoopResult]: For program point L106(lines 106 110) no Hoare annotation was computed. [2020-07-21 16:15:57,942 INFO L264 CegarLoopResult]: At program point L73(lines 72 183) the Hoare annotation is: (and (<= 8672 main_~s__state~0) (<= main_~blastFlag~0 3)) [2020-07-21 16:15:57,943 INFO L268 CegarLoopResult]: For program point L40(lines 40 199) no Hoare annotation was computed. [2020-07-21 16:15:57,943 INFO L264 CegarLoopResult]: At program point L65(lines 64 187) the Hoare annotation is: (let ((.cse0 (<= 8640 main_~s__state~0))) (or (and (<= main_~blastFlag~0 2) .cse0) (and (not (= 0 main_~s__hit~0)) (<= main_~blastFlag~0 3) .cse0))) [2020-07-21 16:15:57,943 INFO L268 CegarLoopResult]: For program point L32(lines 32 203) no Hoare annotation was computed. [2020-07-21 16:15:57,943 INFO L264 CegarLoopResult]: At program point L57(lines 56 191) the Hoare annotation is: (<= main_~blastFlag~0 2) [2020-07-21 16:15:57,943 INFO L264 CegarLoopResult]: At program point L49(lines 48 195) the Hoare annotation is: (<= main_~blastFlag~0 2) [2020-07-21 16:15:57,943 INFO L264 CegarLoopResult]: At program point L173(lines 8 217) the Hoare annotation is: false [2020-07-21 16:15:57,944 INFO L264 CegarLoopResult]: At program point L41(lines 40 199) the Hoare annotation is: (<= main_~blastFlag~0 2) [2020-07-21 16:15:57,944 INFO L264 CegarLoopResult]: At program point L33(lines 32 203) the Hoare annotation is: (<= main_~blastFlag~0 2) [2020-07-21 16:15:57,944 INFO L268 CegarLoopResult]: For program point L68(lines 68 185) no Hoare annotation was computed. [2020-07-21 16:15:57,965 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 04:15:57 BoogieIcfgContainer [2020-07-21 16:15:57,966 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 16:15:57,969 INFO L168 Benchmark]: Toolchain (without parser) took 4336.64 ms. Allocated memory was 145.2 MB in the beginning and 245.9 MB in the end (delta: 100.7 MB). Free memory was 103.1 MB in the beginning and 213.2 MB in the end (delta: -110.1 MB). Peak memory consumption was 111.5 MB. Max. memory is 7.1 GB. [2020-07-21 16:15:57,970 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 145.2 MB. Free memory was 121.4 MB in the beginning and 121.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-21 16:15:57,971 INFO L168 Benchmark]: CACSL2BoogieTranslator took 377.87 ms. Allocated memory was 145.2 MB in the beginning and 202.9 MB in the end (delta: 57.7 MB). Free memory was 102.7 MB in the beginning and 181.3 MB in the end (delta: -78.7 MB). Peak memory consumption was 19.8 MB. Max. memory is 7.1 GB. [2020-07-21 16:15:57,972 INFO L168 Benchmark]: Boogie Preprocessor took 36.94 ms. Allocated memory is still 202.9 MB. Free memory was 181.3 MB in the beginning and 179.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-07-21 16:15:57,972 INFO L168 Benchmark]: RCFGBuilder took 460.30 ms. Allocated memory is still 202.9 MB. Free memory was 179.3 MB in the beginning and 160.2 MB in the end (delta: 19.1 MB). Peak memory consumption was 19.1 MB. Max. memory is 7.1 GB. [2020-07-21 16:15:57,973 INFO L168 Benchmark]: TraceAbstraction took 3454.69 ms. Allocated memory was 202.9 MB in the beginning and 245.9 MB in the end (delta: 43.0 MB). Free memory was 159.5 MB in the beginning and 213.2 MB in the end (delta: -53.7 MB). Peak memory consumption was 110.2 MB. Max. memory is 7.1 GB. [2020-07-21 16:15:57,977 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 145.2 MB. Free memory was 121.4 MB in the beginning and 121.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 377.87 ms. Allocated memory was 145.2 MB in the beginning and 202.9 MB in the end (delta: 57.7 MB). Free memory was 102.7 MB in the beginning and 181.3 MB in the end (delta: -78.7 MB). Peak memory consumption was 19.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 36.94 ms. Allocated memory is still 202.9 MB. Free memory was 181.3 MB in the beginning and 179.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 460.30 ms. Allocated memory is still 202.9 MB. Free memory was 179.3 MB in the beginning and 160.2 MB in the end (delta: 19.1 MB). Peak memory consumption was 19.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3454.69 ms. Allocated memory was 202.9 MB in the beginning and 245.9 MB in the end (delta: 43.0 MB). Free memory was 159.5 MB in the beginning and 213.2 MB in the end (delta: -53.7 MB). Peak memory consumption was 110.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 215]: 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: 32]: Loop Invariant Derived loop invariant: blastFlag <= 2 - InvariantResult [Line: 64]: Loop Invariant Derived loop invariant: (blastFlag <= 2 && 8640 <= s__state) || ((!(0 == s__hit) && blastFlag <= 3) && 8640 <= s__state) - InvariantResult [Line: 8]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 44]: Loop Invariant Derived loop invariant: blastFlag <= 2 - InvariantResult [Line: 113]: Loop Invariant Derived loop invariant: blastFlag <= 2 - InvariantResult [Line: 56]: Loop Invariant Derived loop invariant: blastFlag <= 2 - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: blastFlag <= 2 - InvariantResult [Line: 68]: Loop Invariant Derived loop invariant: (blastFlag <= 2 && 8640 <= s__state) || ((!(0 == s__hit) && blastFlag <= 3) && 8640 <= s__state) - InvariantResult [Line: 105]: Loop Invariant Derived loop invariant: blastFlag <= 2 - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: (((!(0 == s__hit) && blastFlag <= 3) && 8640 <= s__state) || (8672 <= s__state && blastFlag <= 3)) || blastFlag <= 2 - InvariantResult [Line: 48]: Loop Invariant Derived loop invariant: blastFlag <= 2 - InvariantResult [Line: 60]: Loop Invariant Derived loop invariant: blastFlag <= 2 - InvariantResult [Line: 29]: Loop Invariant Derived loop invariant: blastFlag <= 2 - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: blastFlag <= 2 - InvariantResult [Line: 72]: Loop Invariant Derived loop invariant: 8672 <= s__state && blastFlag <= 3 - InvariantResult [Line: 8]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 52]: Loop Invariant Derived loop invariant: blastFlag <= 2 - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 50 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.9s, OverallIterations: 7, TraceHistogramMax: 6, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 457 SDtfs, 250 SDslu, 321 SDs, 0 SdLazy, 196 SolverSat, 51 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 245 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=262occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 11 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 21 LocationsWithAnnotation, 21 PreInvPairs, 86 NumberOfFragments, 106 HoareAnnotationTreeSize, 21 FomulaSimplifications, 585 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 21 FomulaSimplificationsInter, 60 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 252 NumberOfCodeBlocks, 169 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 245 ConstructedInterpolants, 0 QuantifiedInterpolants, 25301 SizeOfPredicates, 6 NumberOfNonLiveVariables, 428 ConjunctsInSsa, 15 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 202/202 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...