/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 NOT_INCREMENTALLY -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/psyco/psyco_io_1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 11:41:31,539 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 11:41:31,542 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 11:41:31,555 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 11:41:31,555 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 11:41:31,557 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 11:41:31,558 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 11:41:31,560 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 11:41:31,562 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 11:41:31,563 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 11:41:31,564 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 11:41:31,565 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 11:41:31,565 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 11:41:31,567 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 11:41:31,568 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 11:41:31,569 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 11:41:31,570 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 11:41:31,571 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 11:41:31,573 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 11:41:31,575 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 11:41:31,577 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 11:41:31,578 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 11:41:31,579 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 11:41:31,580 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 11:41:31,585 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 11:41:31,604 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 11:41:31,630 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 11:41:31,631 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 11:41:31,633 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 11:41:31,633 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 11:41:31,633 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 11:41:31,634 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 11:41:31,634 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 11:41:31,634 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 11:41:31,634 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 11:41:31,635 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 11:41:31,636 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 11:41:31,636 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 11:41:31,636 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 11:41:31,637 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 11:41:31,637 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 11:41:31,637 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 11:41:31,637 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 11:41:31,638 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 11:41:31,638 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 11:41:31,638 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 11:41:31,638 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 11:41:31,638 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 11:41:31,639 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 11:41:31,639 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 11:41:31,639 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 11:41:31,639 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 11:41:31,639 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:41:31,640 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 11:41:31,640 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 11:41:31,640 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 -> NOT_INCREMENTALLY [2020-07-20 11:41:31,927 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 11:41:31,939 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 11:41:31,943 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 11:41:31,945 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 11:41:31,945 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 11:41:31,946 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/psyco/psyco_io_1.c [2020-07-20 11:41:32,029 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e2bb3043/ef6349197b6a4ac0a73048a140aa26fc/FLAGbfe37b695 [2020-07-20 11:41:32,526 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 11:41:32,527 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/psyco/psyco_io_1.c [2020-07-20 11:41:32,538 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e2bb3043/ef6349197b6a4ac0a73048a140aa26fc/FLAGbfe37b695 [2020-07-20 11:41:32,862 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e2bb3043/ef6349197b6a4ac0a73048a140aa26fc [2020-07-20 11:41:32,874 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 11:41:32,877 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 11:41:32,878 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 11:41:32,878 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 11:41:32,883 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 11:41:32,884 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 11:41:32" (1/1) ... [2020-07-20 11:41:32,888 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b5b764 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:41:32, skipping insertion in model container [2020-07-20 11:41:32,888 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 11:41:32" (1/1) ... [2020-07-20 11:41:32,899 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 11:41:32,953 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 11:41:33,200 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 11:41:33,206 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 11:41:33,262 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 11:41:33,372 INFO L208 MainTranslator]: Completed translation [2020-07-20 11:41:33,372 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:41:33 WrapperNode [2020-07-20 11:41:33,373 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 11:41:33,374 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 11:41:33,374 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 11:41:33,374 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 11:41:33,388 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:41:33" (1/1) ... [2020-07-20 11:41:33,389 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:41:33" (1/1) ... [2020-07-20 11:41:33,396 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:41:33" (1/1) ... [2020-07-20 11:41:33,396 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:41:33" (1/1) ... [2020-07-20 11:41:33,405 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:41:33" (1/1) ... [2020-07-20 11:41:33,415 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:41:33" (1/1) ... [2020-07-20 11:41:33,418 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:41:33" (1/1) ... [2020-07-20 11:41:33,421 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 11:41:33,421 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 11:41:33,422 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 11:41:33,422 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 11:41:33,423 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:41:33" (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 11:41:33,493 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 11:41:33,493 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 11:41:33,494 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 11:41:33,494 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 11:41:33,494 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 11:41:33,494 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 11:41:33,494 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 11:41:33,495 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 11:41:34,010 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 11:41:34,011 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-07-20 11:41:34,015 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 11:41:34 BoogieIcfgContainer [2020-07-20 11:41:34,015 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 11:41:34,016 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 11:41:34,016 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 11:41:34,019 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 11:41:34,020 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 11:41:32" (1/3) ... [2020-07-20 11:41:34,021 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f839a92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 11:41:34, skipping insertion in model container [2020-07-20 11:41:34,021 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:41:33" (2/3) ... [2020-07-20 11:41:34,021 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f839a92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 11:41:34, skipping insertion in model container [2020-07-20 11:41:34,021 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 11:41:34" (3/3) ... [2020-07-20 11:41:34,023 INFO L109 eAbstractionObserver]: Analyzing ICFG psyco_io_1.c [2020-07-20 11:41:34,033 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 11:41:34,040 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 11:41:34,053 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 11:41:34,076 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 11:41:34,076 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 11:41:34,077 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 11:41:34,077 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 11:41:34,077 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 11:41:34,077 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 11:41:34,078 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 11:41:34,078 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 11:41:34,097 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states. [2020-07-20 11:41:34,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-07-20 11:41:34,102 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:41:34,103 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:41:34,103 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:41:34,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:41:34,108 INFO L82 PathProgramCache]: Analyzing trace with hash -901605196, now seen corresponding path program 1 times [2020-07-20 11:41:34,114 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:41:34,114 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1163584783] [2020-07-20 11:41:34,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:41:34,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:41:34,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-20 11:41:34,199 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:41:34,226 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 11:41:34,226 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:41:34,227 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1163584783] [2020-07-20 11:41:34,230 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:41:34,230 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-20 11:41:34,231 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468249438] [2020-07-20 11:41:34,237 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-20 11:41:34,237 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:41:34,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-20 11:41:34,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-20 11:41:34,256 INFO L87 Difference]: Start difference. First operand 73 states. Second operand 2 states. [2020-07-20 11:41:34,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:41:34,289 INFO L93 Difference]: Finished difference Result 136 states and 250 transitions. [2020-07-20 11:41:34,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-20 11:41:34,291 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2020-07-20 11:41:34,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:41:34,303 INFO L225 Difference]: With dead ends: 136 [2020-07-20 11:41:34,303 INFO L226 Difference]: Without dead ends: 61 [2020-07-20 11:41:34,307 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-20 11:41:34,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-07-20 11:41:34,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2020-07-20 11:41:34,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-07-20 11:41:34,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 91 transitions. [2020-07-20 11:41:34,351 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 91 transitions. Word has length 13 [2020-07-20 11:41:34,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:41:34,351 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 91 transitions. [2020-07-20 11:41:34,352 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-20 11:41:34,352 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 91 transitions. [2020-07-20 11:41:34,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-07-20 11:41:34,353 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:41:34,353 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:41:34,562 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:41:34,563 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:41:34,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:41:34,564 INFO L82 PathProgramCache]: Analyzing trace with hash -1647463811, now seen corresponding path program 1 times [2020-07-20 11:41:34,564 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:41:34,565 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1989837450] [2020-07-20 11:41:34,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:41:34,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:41:34,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-20 11:41:34,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:41:34,677 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 11:41:34,678 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:41:34,678 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1989837450] [2020-07-20 11:41:34,678 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:41:34,679 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 11:41:34,679 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878876451] [2020-07-20 11:41:34,680 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 11:41:34,681 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:41:34,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 11:41:34,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 11:41:34,682 INFO L87 Difference]: Start difference. First operand 61 states and 91 transitions. Second operand 3 states. [2020-07-20 11:41:34,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:41:34,746 INFO L93 Difference]: Finished difference Result 122 states and 186 transitions. [2020-07-20 11:41:34,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 11:41:34,749 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-07-20 11:41:34,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:41:34,751 INFO L225 Difference]: With dead ends: 122 [2020-07-20 11:41:34,751 INFO L226 Difference]: Without dead ends: 67 [2020-07-20 11:41:34,755 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 11:41:34,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-07-20 11:41:34,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2020-07-20 11:41:34,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-07-20 11:41:34,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 98 transitions. [2020-07-20 11:41:34,774 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 98 transitions. Word has length 14 [2020-07-20 11:41:34,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:41:34,774 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 98 transitions. [2020-07-20 11:41:34,774 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 11:41:34,775 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 98 transitions. [2020-07-20 11:41:34,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-07-20 11:41:34,776 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:41:34,777 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:41:34,991 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:41:34,992 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:41:34,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:41:34,994 INFO L82 PathProgramCache]: Analyzing trace with hash 1212559863, now seen corresponding path program 1 times [2020-07-20 11:41:34,994 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:41:34,995 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [330271631] [2020-07-20 11:41:34,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:41:35,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:41:35,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-20 11:41:35,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:41:35,066 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 11:41:35,066 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:41:35,067 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [330271631] [2020-07-20 11:41:35,067 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:41:35,067 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 11:41:35,068 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725579923] [2020-07-20 11:41:35,068 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 11:41:35,068 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:41:35,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 11:41:35,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 11:41:35,069 INFO L87 Difference]: Start difference. First operand 67 states and 98 transitions. Second operand 3 states. [2020-07-20 11:41:35,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:41:35,113 INFO L93 Difference]: Finished difference Result 120 states and 178 transitions. [2020-07-20 11:41:35,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 11:41:35,114 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-07-20 11:41:35,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:41:35,115 INFO L225 Difference]: With dead ends: 120 [2020-07-20 11:41:35,116 INFO L226 Difference]: Without dead ends: 59 [2020-07-20 11:41:35,117 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 [2020-07-20 11:41:35,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-07-20 11:41:35,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2020-07-20 11:41:35,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-07-20 11:41:35,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 84 transitions. [2020-07-20 11:41:35,125 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 84 transitions. Word has length 19 [2020-07-20 11:41:35,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:41:35,125 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 84 transitions. [2020-07-20 11:41:35,125 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 11:41:35,126 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 84 transitions. [2020-07-20 11:41:35,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-07-20 11:41:35,127 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:41:35,127 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:41:35,334 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:41:35,335 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:41:35,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:41:35,336 INFO L82 PathProgramCache]: Analyzing trace with hash -2054021688, now seen corresponding path program 1 times [2020-07-20 11:41:35,337 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:41:35,337 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2089882365] [2020-07-20 11:41:35,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:41:35,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:41:35,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-20 11:41:35,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:41:35,430 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 11:41:35,430 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:41:35,430 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2089882365] [2020-07-20 11:41:35,431 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:41:35,431 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 11:41:35,431 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558444827] [2020-07-20 11:41:35,432 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 11:41:35,432 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:41:35,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 11:41:35,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 11:41:35,433 INFO L87 Difference]: Start difference. First operand 59 states and 84 transitions. Second operand 3 states. [2020-07-20 11:41:35,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:41:35,495 INFO L93 Difference]: Finished difference Result 143 states and 214 transitions. [2020-07-20 11:41:35,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 11:41:35,495 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-07-20 11:41:35,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:41:35,497 INFO L225 Difference]: With dead ends: 143 [2020-07-20 11:41:35,497 INFO L226 Difference]: Without dead ends: 97 [2020-07-20 11:41:35,498 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 11:41:35,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-07-20 11:41:35,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 94. [2020-07-20 11:41:35,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-07-20 11:41:35,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 136 transitions. [2020-07-20 11:41:35,508 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 136 transitions. Word has length 24 [2020-07-20 11:41:35,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:41:35,508 INFO L479 AbstractCegarLoop]: Abstraction has 94 states and 136 transitions. [2020-07-20 11:41:35,508 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 11:41:35,508 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 136 transitions. [2020-07-20 11:41:35,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-07-20 11:41:35,509 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:41:35,510 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:41:35,723 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:41:35,724 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:41:35,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:41:35,725 INFO L82 PathProgramCache]: Analyzing trace with hash -1279925660, now seen corresponding path program 1 times [2020-07-20 11:41:35,725 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:41:35,726 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1504353061] [2020-07-20 11:41:35,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:41:35,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:41:35,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-20 11:41:35,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:41:35,782 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 11:41:35,782 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:41:35,783 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1504353061] [2020-07-20 11:41:35,783 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:41:35,783 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 11:41:35,783 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659384577] [2020-07-20 11:41:35,784 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 11:41:35,784 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:41:35,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 11:41:35,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 11:41:35,785 INFO L87 Difference]: Start difference. First operand 94 states and 136 transitions. Second operand 3 states. [2020-07-20 11:41:35,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:41:35,831 INFO L93 Difference]: Finished difference Result 187 states and 272 transitions. [2020-07-20 11:41:35,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 11:41:35,832 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-07-20 11:41:35,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:41:35,833 INFO L225 Difference]: With dead ends: 187 [2020-07-20 11:41:35,833 INFO L226 Difference]: Without dead ends: 108 [2020-07-20 11:41:35,834 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 11:41:35,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-07-20 11:41:35,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 106. [2020-07-20 11:41:35,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-07-20 11:41:35,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 150 transitions. [2020-07-20 11:41:35,843 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 150 transitions. Word has length 25 [2020-07-20 11:41:35,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:41:35,844 INFO L479 AbstractCegarLoop]: Abstraction has 106 states and 150 transitions. [2020-07-20 11:41:35,844 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 11:41:35,844 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 150 transitions. [2020-07-20 11:41:35,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-07-20 11:41:35,845 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:41:35,846 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:41:36,050 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:41:36,051 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:41:36,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:41:36,052 INFO L82 PathProgramCache]: Analyzing trace with hash -964230168, now seen corresponding path program 1 times [2020-07-20 11:41:36,052 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:41:36,052 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [807899300] [2020-07-20 11:41:36,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:41:36,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:41:36,103 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-20 11:41:36,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:41:36,122 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-07-20 11:41:36,123 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:41:36,123 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [807899300] [2020-07-20 11:41:36,123 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:41:36,123 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 11:41:36,124 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572445963] [2020-07-20 11:41:36,124 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 11:41:36,124 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:41:36,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 11:41:36,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 11:41:36,125 INFO L87 Difference]: Start difference. First operand 106 states and 150 transitions. Second operand 3 states. [2020-07-20 11:41:36,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:41:36,154 INFO L93 Difference]: Finished difference Result 173 states and 247 transitions. [2020-07-20 11:41:36,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 11:41:36,155 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 36 [2020-07-20 11:41:36,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:41:36,156 INFO L225 Difference]: With dead ends: 173 [2020-07-20 11:41:36,156 INFO L226 Difference]: Without dead ends: 82 [2020-07-20 11:41:36,157 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 11:41:36,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-07-20 11:41:36,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2020-07-20 11:41:36,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-07-20 11:41:36,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 112 transitions. [2020-07-20 11:41:36,166 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 112 transitions. Word has length 36 [2020-07-20 11:41:36,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:41:36,167 INFO L479 AbstractCegarLoop]: Abstraction has 82 states and 112 transitions. [2020-07-20 11:41:36,167 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 11:41:36,167 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 112 transitions. [2020-07-20 11:41:36,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-07-20 11:41:36,168 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:41:36,168 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:41:36,381 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:41:36,381 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:41:36,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:41:36,382 INFO L82 PathProgramCache]: Analyzing trace with hash -1856126908, now seen corresponding path program 1 times [2020-07-20 11:41:36,382 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:41:36,383 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1244549096] [2020-07-20 11:41:36,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:41:36,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:41:36,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-20 11:41:36,437 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:41:36,458 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-07-20 11:41:36,458 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:41:36,459 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1244549096] [2020-07-20 11:41:36,459 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:41:36,459 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 11:41:36,459 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078901589] [2020-07-20 11:41:36,460 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 11:41:36,460 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:41:36,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 11:41:36,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 11:41:36,461 INFO L87 Difference]: Start difference. First operand 82 states and 112 transitions. Second operand 4 states. [2020-07-20 11:41:36,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:41:36,502 INFO L93 Difference]: Finished difference Result 85 states and 115 transitions. [2020-07-20 11:41:36,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 11:41:36,503 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 37 [2020-07-20 11:41:36,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:41:36,503 INFO L225 Difference]: With dead ends: 85 [2020-07-20 11:41:36,503 INFO L226 Difference]: Without dead ends: 0 [2020-07-20 11:41:36,504 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-20 11:41:36,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-20 11:41:36,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-20 11:41:36,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-20 11:41:36,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-20 11:41:36,505 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 37 [2020-07-20 11:41:36,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:41:36,506 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-20 11:41:36,506 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 11:41:36,506 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-20 11:41:36,506 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-20 11:41:36,713 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:41:36,716 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-20 11:41:36,872 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-20 11:41:36,873 INFO L271 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2020-07-20 11:41:36,873 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-20 11:41:36,873 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-20 11:41:36,873 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-20 11:41:36,873 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-20 11:41:36,873 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-20 11:41:36,874 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 13 344) no Hoare annotation was computed. [2020-07-20 11:41:36,874 INFO L268 CegarLoopResult]: For program point L36(lines 36 47) no Hoare annotation was computed. [2020-07-20 11:41:36,874 INFO L268 CegarLoopResult]: For program point L86(lines 86 101) no Hoare annotation was computed. [2020-07-20 11:41:36,874 INFO L268 CegarLoopResult]: For program point L53(lines 53 104) no Hoare annotation was computed. [2020-07-20 11:41:36,874 INFO L268 CegarLoopResult]: For program point L202(lines 202 217) no Hoare annotation was computed. [2020-07-20 11:41:36,874 INFO L268 CegarLoopResult]: For program point L70(lines 70 85) no Hoare annotation was computed. [2020-07-20 11:41:36,874 INFO L268 CegarLoopResult]: For program point L318(lines 318 333) no Hoare annotation was computed. [2020-07-20 11:41:36,875 INFO L268 CegarLoopResult]: For program point L186(lines 186 201) no Hoare annotation was computed. [2020-07-20 11:41:36,875 INFO L268 CegarLoopResult]: For program point L54(lines 54 69) no Hoare annotation was computed. [2020-07-20 11:41:36,875 INFO L264 CegarLoopResult]: At program point L335(lines 23 339) the Hoare annotation is: (let ((.cse0 (= 0 main_~this_sink~0))) (or (and (<= main_~q~0 2) (<= 2 main_~q~0) .cse0) (and .cse0 (<= main_~q~0 0)) (and (<= 3 main_~q~0) (not .cse0)))) [2020-07-20 11:41:36,875 INFO L268 CegarLoopResult]: For program point L302(lines 302 317) no Hoare annotation was computed. [2020-07-20 11:41:36,875 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 13 344) no Hoare annotation was computed. [2020-07-20 11:41:36,875 INFO L268 CegarLoopResult]: For program point L170(lines 170 185) no Hoare annotation was computed. [2020-07-20 11:41:36,876 INFO L268 CegarLoopResult]: For program point L286(lines 286 301) no Hoare annotation was computed. [2020-07-20 11:41:36,876 INFO L268 CegarLoopResult]: For program point L154(lines 154 169) no Hoare annotation was computed. [2020-07-20 11:41:36,876 INFO L268 CegarLoopResult]: For program point L88(lines 88 99) no Hoare annotation was computed. [2020-07-20 11:41:36,876 INFO L268 CegarLoopResult]: For program point L270(lines 270 285) no Hoare annotation was computed. [2020-07-20 11:41:36,876 INFO L268 CegarLoopResult]: For program point L204(lines 204 215) no Hoare annotation was computed. [2020-07-20 11:41:36,876 INFO L268 CegarLoopResult]: For program point L138(lines 138 153) no Hoare annotation was computed. [2020-07-20 11:41:36,876 INFO L268 CegarLoopResult]: For program point L105(lines 105 220) no Hoare annotation was computed. [2020-07-20 11:41:36,877 INFO L268 CegarLoopResult]: For program point L72(lines 72 83) no Hoare annotation was computed. [2020-07-20 11:41:36,877 INFO L268 CegarLoopResult]: For program point L320(lines 320 331) no Hoare annotation was computed. [2020-07-20 11:41:36,877 INFO L268 CegarLoopResult]: For program point L254(lines 254 269) no Hoare annotation was computed. [2020-07-20 11:41:36,877 INFO L268 CegarLoopResult]: For program point L221(lines 221 336) no Hoare annotation was computed. [2020-07-20 11:41:36,877 INFO L268 CegarLoopResult]: For program point L188(lines 188 199) no Hoare annotation was computed. [2020-07-20 11:41:36,877 INFO L268 CegarLoopResult]: For program point L122(lines 122 137) no Hoare annotation was computed. [2020-07-20 11:41:36,878 INFO L268 CegarLoopResult]: For program point L56(lines 56 67) no Hoare annotation was computed. [2020-07-20 11:41:36,878 INFO L264 CegarLoopResult]: At program point L23-2(lines 23 339) the Hoare annotation is: (let ((.cse0 (= 0 main_~this_sink~0))) (or (and (<= main_~q~0 2) (<= 2 main_~q~0) .cse0) (and .cse0 (<= main_~q~0 0)) (and (<= 3 main_~q~0) (not .cse0)))) [2020-07-20 11:41:36,878 INFO L268 CegarLoopResult]: For program point L23-3(lines 23 339) no Hoare annotation was computed. [2020-07-20 11:41:36,878 INFO L268 CegarLoopResult]: For program point L304(lines 304 315) no Hoare annotation was computed. [2020-07-20 11:41:36,878 INFO L268 CegarLoopResult]: For program point L238(lines 238 253) no Hoare annotation was computed. [2020-07-20 11:41:36,879 INFO L268 CegarLoopResult]: For program point L172(lines 172 183) no Hoare annotation was computed. [2020-07-20 11:41:36,879 INFO L268 CegarLoopResult]: For program point L106(lines 106 121) no Hoare annotation was computed. [2020-07-20 11:41:36,879 INFO L268 CegarLoopResult]: For program point L40(lines 40 42) no Hoare annotation was computed. [2020-07-20 11:41:36,879 INFO L268 CegarLoopResult]: For program point L288(lines 288 299) no Hoare annotation was computed. [2020-07-20 11:41:36,879 INFO L268 CegarLoopResult]: For program point L222(lines 222 237) no Hoare annotation was computed. [2020-07-20 11:41:36,879 INFO L268 CegarLoopResult]: For program point L156(lines 156 167) no Hoare annotation was computed. [2020-07-20 11:41:36,880 INFO L268 CegarLoopResult]: For program point L272(lines 272 283) no Hoare annotation was computed. [2020-07-20 11:41:36,880 INFO L268 CegarLoopResult]: For program point L140(lines 140 151) no Hoare annotation was computed. [2020-07-20 11:41:36,880 INFO L268 CegarLoopResult]: For program point L256(lines 256 267) no Hoare annotation was computed. [2020-07-20 11:41:36,880 INFO L268 CegarLoopResult]: For program point L124(lines 124 135) no Hoare annotation was computed. [2020-07-20 11:41:36,880 INFO L268 CegarLoopResult]: For program point L240(lines 240 251) no Hoare annotation was computed. [2020-07-20 11:41:36,880 INFO L268 CegarLoopResult]: For program point L108(lines 108 119) no Hoare annotation was computed. [2020-07-20 11:41:36,881 INFO L268 CegarLoopResult]: For program point L224(lines 224 235) no Hoare annotation was computed. [2020-07-20 11:41:36,881 INFO L268 CegarLoopResult]: For program point L92(lines 92 94) no Hoare annotation was computed. [2020-07-20 11:41:36,881 INFO L268 CegarLoopResult]: For program point L208(lines 208 210) no Hoare annotation was computed. [2020-07-20 11:41:36,881 INFO L268 CegarLoopResult]: For program point L76(lines 76 78) no Hoare annotation was computed. [2020-07-20 11:41:36,881 INFO L268 CegarLoopResult]: For program point L324(lines 324 326) no Hoare annotation was computed. [2020-07-20 11:41:36,881 INFO L268 CegarLoopResult]: For program point L192(lines 192 194) no Hoare annotation was computed. [2020-07-20 11:41:36,882 INFO L268 CegarLoopResult]: For program point L60(lines 60 62) no Hoare annotation was computed. [2020-07-20 11:41:36,882 INFO L268 CegarLoopResult]: For program point L308(lines 308 310) no Hoare annotation was computed. [2020-07-20 11:41:36,882 INFO L268 CegarLoopResult]: For program point L176(lines 176 178) no Hoare annotation was computed. [2020-07-20 11:41:36,882 INFO L264 CegarLoopResult]: At program point L325(lines 13 344) the Hoare annotation is: false [2020-07-20 11:41:36,882 INFO L268 CegarLoopResult]: For program point L292(lines 292 294) no Hoare annotation was computed. [2020-07-20 11:41:36,882 INFO L268 CegarLoopResult]: For program point L160(lines 160 162) no Hoare annotation was computed. [2020-07-20 11:41:36,883 INFO L268 CegarLoopResult]: For program point L276(lines 276 278) no Hoare annotation was computed. [2020-07-20 11:41:36,883 INFO L268 CegarLoopResult]: For program point L144(lines 144 146) no Hoare annotation was computed. [2020-07-20 11:41:36,883 INFO L268 CegarLoopResult]: For program point L260(lines 260 262) no Hoare annotation was computed. [2020-07-20 11:41:36,883 INFO L268 CegarLoopResult]: For program point L128(lines 128 130) no Hoare annotation was computed. [2020-07-20 11:41:36,883 INFO L268 CegarLoopResult]: For program point L244(lines 244 246) no Hoare annotation was computed. [2020-07-20 11:41:36,883 INFO L268 CegarLoopResult]: For program point L112(lines 112 114) no Hoare annotation was computed. [2020-07-20 11:41:36,883 INFO L268 CegarLoopResult]: For program point L228(lines 228 230) no Hoare annotation was computed. [2020-07-20 11:41:36,884 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 343) no Hoare annotation was computed. [2020-07-20 11:41:36,884 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 344) the Hoare annotation is: true [2020-07-20 11:41:36,884 INFO L268 CegarLoopResult]: For program point L33(lines 33 52) no Hoare annotation was computed. [2020-07-20 11:41:36,884 INFO L268 CegarLoopResult]: For program point L34(lines 34 49) no Hoare annotation was computed. [2020-07-20 11:41:36,899 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 11:41:36 BoogieIcfgContainer [2020-07-20 11:41:36,900 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 11:41:36,903 INFO L168 Benchmark]: Toolchain (without parser) took 4026.47 ms. Allocated memory was 137.4 MB in the beginning and 232.8 MB in the end (delta: 95.4 MB). Free memory was 100.6 MB in the beginning and 112.3 MB in the end (delta: -11.7 MB). Peak memory consumption was 83.7 MB. Max. memory is 7.1 GB. [2020-07-20 11:41:36,903 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 137.4 MB. Free memory is still 119.0 MB. There was no memory consumed. Max. memory is 7.1 GB. [2020-07-20 11:41:36,904 INFO L168 Benchmark]: CACSL2BoogieTranslator took 495.10 ms. Allocated memory was 137.4 MB in the beginning and 201.9 MB in the end (delta: 64.5 MB). Free memory was 100.4 MB in the beginning and 180.4 MB in the end (delta: -80.0 MB). Peak memory consumption was 25.9 MB. Max. memory is 7.1 GB. [2020-07-20 11:41:36,905 INFO L168 Benchmark]: Boogie Preprocessor took 47.43 ms. Allocated memory is still 201.9 MB. Free memory was 180.4 MB in the beginning and 177.8 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 7.1 GB. [2020-07-20 11:41:36,906 INFO L168 Benchmark]: RCFGBuilder took 593.66 ms. Allocated memory is still 201.9 MB. Free memory was 177.8 MB in the beginning and 150.9 MB in the end (delta: 26.9 MB). Peak memory consumption was 26.9 MB. Max. memory is 7.1 GB. [2020-07-20 11:41:36,907 INFO L168 Benchmark]: TraceAbstraction took 2883.69 ms. Allocated memory was 201.9 MB in the beginning and 232.8 MB in the end (delta: 30.9 MB). Free memory was 150.2 MB in the beginning and 112.3 MB in the end (delta: 37.9 MB). Peak memory consumption was 68.9 MB. Max. memory is 7.1 GB. [2020-07-20 11:41:36,912 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 137.4 MB. Free memory is still 119.0 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 495.10 ms. Allocated memory was 137.4 MB in the beginning and 201.9 MB in the end (delta: 64.5 MB). Free memory was 100.4 MB in the beginning and 180.4 MB in the end (delta: -80.0 MB). Peak memory consumption was 25.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 47.43 ms. Allocated memory is still 201.9 MB. Free memory was 180.4 MB in the beginning and 177.8 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 593.66 ms. Allocated memory is still 201.9 MB. Free memory was 177.8 MB in the beginning and 150.9 MB in the end (delta: 26.9 MB). Peak memory consumption was 26.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2883.69 ms. Allocated memory was 201.9 MB in the beginning and 232.8 MB in the end (delta: 30.9 MB). Free memory was 150.2 MB in the beginning and 112.3 MB in the end (delta: 37.9 MB). Peak memory consumption was 68.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 343]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: (((q <= 2 && 2 <= q) && 0 == this_sink) || (0 == this_sink && q <= 0)) || (3 <= q && !(0 == this_sink)) - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: (((q <= 2 && 2 <= q) && 0 == this_sink) || (0 == this_sink && q <= 0)) || (3 <= q && !(0 == this_sink)) - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 73 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.6s, OverallIterations: 7, TraceHistogramMax: 3, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 549 SDtfs, 199 SDslu, 292 SDs, 0 SdLazy, 98 SolverSat, 39 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 162 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=106occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 5 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 15 NumberOfFragments, 57 HoareAnnotationTreeSize, 7 FomulaSimplifications, 29 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 12 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 168 NumberOfCodeBlocks, 168 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 161 ConstructedInterpolants, 0 QuantifiedInterpolants, 6905 SizeOfPredicates, 5 NumberOfNonLiveVariables, 863 ConjunctsInSsa, 17 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 27/27 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...