/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic NUM_VARIABLES --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/nla-digbench/geo1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 18:20:01,644 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 18:20:01,649 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 18:20:01,679 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 18:20:01,679 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 18:20:01,683 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 18:20:01,685 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 18:20:01,698 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 18:20:01,705 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 18:20:01,710 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 18:20:01,713 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 18:20:01,715 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 18:20:01,715 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 18:20:01,720 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 18:20:01,723 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 18:20:01,725 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 18:20:01,730 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 18:20:01,732 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 18:20:01,735 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 18:20:01,743 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 18:20:01,749 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 18:20:01,753 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 18:20:01,755 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 18:20:01,756 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 18:20:01,760 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 18:20:01,779 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 18:20:01,781 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 18:20:01,784 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 18:20:01,785 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 18:20:01,833 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 18:20:01,834 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 18:20:01,837 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 18:20:01,839 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 18:20:01,839 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 18:20:01,840 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 18:20:01,840 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 18:20:01,840 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 18:20:01,841 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 18:20:01,841 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 18:20:01,843 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 18:20:01,843 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 18:20:01,844 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 18:20:01,845 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 18:20:01,845 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 18:20:01,846 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 18:20:01,846 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 18:20:01,846 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 18:20:01,847 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 18:20:01,847 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 18:20:01,847 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 18:20:01,847 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 18:20:01,848 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 18:20:01,848 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 18:20:01,848 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 18:20:01,848 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 18:20:01,849 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 18:20:01,849 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 18:20:01,849 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 18:20:01,849 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> SMT_FEATURE_HEURISTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> NUM_VARIABLES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4 [2020-07-20 18:20:02,233 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 18:20:02,253 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 18:20:02,259 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 18:20:02,262 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 18:20:02,262 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 18:20:02,263 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench/geo1.c [2020-07-20 18:20:02,384 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0398d10e5/76bd0f9cd77643198680e0fc0be12007/FLAG4563eadc0 [2020-07-20 18:20:03,076 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 18:20:03,077 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench/geo1.c [2020-07-20 18:20:03,092 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0398d10e5/76bd0f9cd77643198680e0fc0be12007/FLAG4563eadc0 [2020-07-20 18:20:03,375 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0398d10e5/76bd0f9cd77643198680e0fc0be12007 [2020-07-20 18:20:03,389 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 18:20:03,393 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 18:20:03,395 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 18:20:03,395 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 18:20:03,401 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 18:20:03,403 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 06:20:03" (1/1) ... [2020-07-20 18:20:03,407 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4efdd89d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:20:03, skipping insertion in model container [2020-07-20 18:20:03,407 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 06:20:03" (1/1) ... [2020-07-20 18:20:03,419 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 18:20:03,459 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 18:20:03,841 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 18:20:03,853 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 18:20:03,892 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 18:20:03,921 INFO L208 MainTranslator]: Completed translation [2020-07-20 18:20:03,923 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:20:03 WrapperNode [2020-07-20 18:20:03,924 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 18:20:03,925 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 18:20:03,926 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 18:20:03,926 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 18:20:03,951 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:20:03" (1/1) ... [2020-07-20 18:20:03,953 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:20:03" (1/1) ... [2020-07-20 18:20:03,968 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:20:03" (1/1) ... [2020-07-20 18:20:03,968 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:20:03" (1/1) ... [2020-07-20 18:20:03,974 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:20:03" (1/1) ... [2020-07-20 18:20:03,981 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:20:03" (1/1) ... [2020-07-20 18:20:03,982 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:20:03" (1/1) ... [2020-07-20 18:20:03,984 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 18:20:03,986 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 18:20:03,986 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 18:20:03,986 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 18:20:03,988 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:20:03" (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 18:20:04,184 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 18:20:04,185 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 18:20:04,185 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-20 18:20:04,185 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-20 18:20:04,185 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 18:20:04,185 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 18:20:04,186 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 18:20:04,186 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-20 18:20:04,186 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-20 18:20:04,186 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-20 18:20:04,186 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 18:20:04,187 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 18:20:04,187 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 18:20:04,437 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 18:20:04,437 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-20 18:20:04,442 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 06:20:04 BoogieIcfgContainer [2020-07-20 18:20:04,442 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 18:20:04,444 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 18:20:04,444 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 18:20:04,449 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 18:20:04,449 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 06:20:03" (1/3) ... [2020-07-20 18:20:04,451 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@767117d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 06:20:04, skipping insertion in model container [2020-07-20 18:20:04,451 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:20:03" (2/3) ... [2020-07-20 18:20:04,452 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@767117d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 06:20:04, skipping insertion in model container [2020-07-20 18:20:04,452 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 06:20:04" (3/3) ... [2020-07-20 18:20:04,455 INFO L109 eAbstractionObserver]: Analyzing ICFG geo1.c [2020-07-20 18:20:04,468 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 18:20:04,480 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 18:20:04,500 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 18:20:04,536 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 18:20:04,536 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 18:20:04,536 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 18:20:04,537 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 18:20:04,537 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 18:20:04,537 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 18:20:04,537 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 18:20:04,537 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 18:20:04,562 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2020-07-20 18:20:04,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-07-20 18:20:04,572 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 18:20:04,573 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 18:20:04,574 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 18:20:04,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 18:20:04,584 INFO L82 PathProgramCache]: Analyzing trace with hash -1923958992, now seen corresponding path program 1 times [2020-07-20 18:20:04,594 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 18:20:04,594 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1579037970] [2020-07-20 18:20:04,595 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 18:20:04,743 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 18:20:04,744 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 18:20:04,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-20 18:20:04,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 18:20:04,973 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 18:20:04,973 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 18:20:04,975 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1579037970] [2020-07-20 18:20:04,977 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 18:20:04,977 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 18:20:04,979 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631532771] [2020-07-20 18:20:04,988 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 18:20:04,989 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 18:20:05,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 18:20:05,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 18:20:05,008 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 5 states. [2020-07-20 18:20:05,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 18:20:05,165 INFO L93 Difference]: Finished difference Result 45 states and 60 transitions. [2020-07-20 18:20:05,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 18:20:05,168 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-07-20 18:20:05,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 18:20:05,182 INFO L225 Difference]: With dead ends: 45 [2020-07-20 18:20:05,182 INFO L226 Difference]: Without dead ends: 24 [2020-07-20 18:20:05,189 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-20 18:20:05,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-07-20 18:20:05,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22. [2020-07-20 18:20:05,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-07-20 18:20:05,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2020-07-20 18:20:05,256 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 10 [2020-07-20 18:20:05,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 18:20:05,257 INFO L479 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2020-07-20 18:20:05,258 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 18:20:05,258 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2020-07-20 18:20:05,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-07-20 18:20:05,259 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 18:20:05,259 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 18:20:05,473 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 18:20:05,474 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 18:20:05,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 18:20:05,475 INFO L82 PathProgramCache]: Analyzing trace with hash 1187633082, now seen corresponding path program 1 times [2020-07-20 18:20:05,476 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 18:20:05,477 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1362920648] [2020-07-20 18:20:05,477 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 18:20:05,531 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 18:20:05,532 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 18:20:05,534 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 9 conjunts are in the unsatisfiable core [2020-07-20 18:20:05,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 18:20:05,622 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 18:20:05,623 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 18:20:05,623 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1362920648] [2020-07-20 18:20:05,624 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 18:20:05,624 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-20 18:20:05,625 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596846537] [2020-07-20 18:20:05,627 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 18:20:05,627 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 18:20:05,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 18:20:05,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-20 18:20:05,629 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand 6 states. [2020-07-20 18:20:05,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 18:20:05,737 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2020-07-20 18:20:05,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 18:20:05,739 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-07-20 18:20:05,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 18:20:05,741 INFO L225 Difference]: With dead ends: 31 [2020-07-20 18:20:05,742 INFO L226 Difference]: Without dead ends: 23 [2020-07-20 18:20:05,744 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-07-20 18:20:05,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-07-20 18:20:05,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-07-20 18:20:05,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-07-20 18:20:05,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2020-07-20 18:20:05,754 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 17 [2020-07-20 18:20:05,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 18:20:05,755 INFO L479 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2020-07-20 18:20:05,755 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 18:20:05,755 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2020-07-20 18:20:05,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-07-20 18:20:05,757 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 18:20:05,757 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 18:20:05,966 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 18:20:05,967 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 18:20:05,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 18:20:05,969 INFO L82 PathProgramCache]: Analyzing trace with hash 1235596592, now seen corresponding path program 1 times [2020-07-20 18:20:05,970 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 18:20:05,970 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2012769806] [2020-07-20 18:20:05,971 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 18:20:06,049 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 18:20:06,049 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 18:20:06,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 13 conjunts are in the unsatisfiable core [2020-07-20 18:20:06,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 18:20:06,246 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 18:20:06,247 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 18:20:06,282 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 18:20:12,528 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 2 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 18:20:12,530 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2012769806] [2020-07-20 18:20:12,531 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 18:20:12,531 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2020-07-20 18:20:12,532 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499517886] [2020-07-20 18:20:12,533 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-20 18:20:12,533 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 18:20:12,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-20 18:20:12,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=38, Unknown=3, NotChecked=0, Total=56 [2020-07-20 18:20:12,535 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand 8 states. [2020-07-20 18:20:20,873 WARN L193 SmtUtils]: Spent 4.08 s on a formula simplification that was a NOOP. DAG size: 13 [2020-07-20 18:20:31,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 18:20:31,252 INFO L93 Difference]: Finished difference Result 33 states and 35 transitions. [2020-07-20 18:20:31,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-20 18:20:31,260 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 17 [2020-07-20 18:20:31,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 18:20:31,262 INFO L225 Difference]: With dead ends: 33 [2020-07-20 18:20:31,263 INFO L226 Difference]: Without dead ends: 31 [2020-07-20 18:20:31,265 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 12.4s TimeCoverageRelationStatistics Valid=23, Invalid=63, Unknown=4, NotChecked=0, Total=90 [2020-07-20 18:20:31,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-07-20 18:20:31,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 29. [2020-07-20 18:20:31,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-07-20 18:20:31,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2020-07-20 18:20:31,288 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 17 [2020-07-20 18:20:31,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 18:20:31,288 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2020-07-20 18:20:31,289 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-20 18:20:31,289 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2020-07-20 18:20:31,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-07-20 18:20:31,290 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 18:20:31,290 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 18:20:31,492 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 18:20:31,493 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 18:20:31,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 18:20:31,496 INFO L82 PathProgramCache]: Analyzing trace with hash -725804614, now seen corresponding path program 1 times [2020-07-20 18:20:31,517 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 18:20:31,519 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1551533474] [2020-07-20 18:20:31,520 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 18:20:31,571 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 18:20:31,571 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 18:20:31,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 15 conjunts are in the unsatisfiable core [2020-07-20 18:20:31,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 18:20:32,156 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 18:20:32,307 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-07-20 18:20:32,311 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 18:20:32,446 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 18:20:40,951 WARN L193 SmtUtils]: Spent 376.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2020-07-20 18:20:40,980 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 0 refuted. 3 times theorem prover too weak. 4 trivial. 0 not checked. [2020-07-20 18:20:40,981 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1551533474] [2020-07-20 18:20:40,982 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 18:20:40,982 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 12 [2020-07-20 18:20:40,984 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68236775] [2020-07-20 18:20:40,985 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-07-20 18:20:40,986 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 18:20:40,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-07-20 18:20:40,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=104, Unknown=3, NotChecked=0, Total=132 [2020-07-20 18:20:40,988 INFO L87 Difference]: Start difference. First operand 29 states and 30 transitions. Second operand 12 states. [2020-07-20 18:20:51,057 WARN L193 SmtUtils]: Spent 5.22 s on a formula simplification that was a NOOP. DAG size: 13 [2020-07-20 18:21:04,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 18:21:04,972 INFO L93 Difference]: Finished difference Result 37 states and 39 transitions. [2020-07-20 18:21:04,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-20 18:21:04,976 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 24 [2020-07-20 18:21:04,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 18:21:04,977 INFO L225 Difference]: With dead ends: 37 [2020-07-20 18:21:04,977 INFO L226 Difference]: Without dead ends: 0 [2020-07-20 18:21:04,978 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 17.7s TimeCoverageRelationStatistics Valid=51, Invalid=217, Unknown=4, NotChecked=0, Total=272 [2020-07-20 18:21:04,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-20 18:21:04,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-20 18:21:04,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-20 18:21:04,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-20 18:21:04,980 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 24 [2020-07-20 18:21:04,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 18:21:04,980 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-20 18:21:04,981 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-07-20 18:21:04,981 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-20 18:21:04,981 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-20 18:21:05,183 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 18:21:05,188 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-20 18:21:05,289 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-07-20 18:21:05,290 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-20 18:21:05,290 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-20 18:21:05,290 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-20 18:21:05,290 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-20 18:21:05,290 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-20 18:21:05,291 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 10 12) no Hoare annotation was computed. [2020-07-20 18:21:05,291 INFO L268 CegarLoopResult]: For program point L11(line 11) no Hoare annotation was computed. [2020-07-20 18:21:05,291 INFO L268 CegarLoopResult]: For program point L11-2(lines 10 12) no Hoare annotation was computed. [2020-07-20 18:21:05,291 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 10 12) no Hoare annotation was computed. [2020-07-20 18:21:05,291 INFO L271 CegarLoopResult]: At program point L31(line 31) the Hoare annotation is: true [2020-07-20 18:21:05,292 INFO L268 CegarLoopResult]: For program point L31-1(lines 30 40) no Hoare annotation was computed. [2020-07-20 18:21:05,292 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 20 46) the Hoare annotation is: true [2020-07-20 18:21:05,292 INFO L271 CegarLoopResult]: At program point L30-2(lines 30 40) the Hoare annotation is: true [2020-07-20 18:21:05,292 INFO L268 CegarLoopResult]: For program point L30-3(lines 30 40) no Hoare annotation was computed. [2020-07-20 18:21:05,292 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 20 46) no Hoare annotation was computed. [2020-07-20 18:21:05,293 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 20 46) no Hoare annotation was computed. [2020-07-20 18:21:05,293 INFO L271 CegarLoopResult]: At program point L44(line 44) the Hoare annotation is: true [2020-07-20 18:21:05,293 INFO L268 CegarLoopResult]: For program point L44-1(line 44) no Hoare annotation was computed. [2020-07-20 18:21:05,293 INFO L268 CegarLoopResult]: For program point L15(lines 15 16) no Hoare annotation was computed. [2020-07-20 18:21:05,293 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 13 19) the Hoare annotation is: true [2020-07-20 18:21:05,293 INFO L268 CegarLoopResult]: For program point L14(lines 14 17) no Hoare annotation was computed. [2020-07-20 18:21:05,294 INFO L268 CegarLoopResult]: For program point L14-2(lines 13 19) no Hoare annotation was computed. [2020-07-20 18:21:05,294 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 13 19) no Hoare annotation was computed. [2020-07-20 18:21:05,294 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 16) no Hoare annotation was computed. [2020-07-20 18:21:05,312 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 06:21:05 BoogieIcfgContainer [2020-07-20 18:21:05,313 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 18:21:05,316 INFO L168 Benchmark]: Toolchain (without parser) took 61924.70 ms. Allocated memory was 139.5 MB in the beginning and 233.3 MB in the end (delta: 93.8 MB). Free memory was 104.9 MB in the beginning and 151.4 MB in the end (delta: -46.5 MB). Peak memory consumption was 47.3 MB. Max. memory is 7.1 GB. [2020-07-20 18:21:05,317 INFO L168 Benchmark]: CDTParser took 0.45 ms. Allocated memory is still 139.5 MB. Free memory is still 122.2 MB. There was no memory consumed. Max. memory is 7.1 GB. [2020-07-20 18:21:05,318 INFO L168 Benchmark]: CACSL2BoogieTranslator took 529.87 ms. Allocated memory is still 139.5 MB. Free memory was 104.5 MB in the beginning and 95.0 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. [2020-07-20 18:21:05,320 INFO L168 Benchmark]: Boogie Preprocessor took 59.59 ms. Allocated memory is still 139.5 MB. Free memory was 95.0 MB in the beginning and 93.2 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 7.1 GB. [2020-07-20 18:21:05,321 INFO L168 Benchmark]: RCFGBuilder took 456.87 ms. Allocated memory was 139.5 MB in the beginning and 203.9 MB in the end (delta: 64.5 MB). Free memory was 93.2 MB in the beginning and 170.7 MB in the end (delta: -77.5 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. [2020-07-20 18:21:05,322 INFO L168 Benchmark]: TraceAbstraction took 60869.15 ms. Allocated memory was 203.9 MB in the beginning and 233.3 MB in the end (delta: 29.4 MB). Free memory was 169.8 MB in the beginning and 151.4 MB in the end (delta: 18.3 MB). Peak memory consumption was 47.7 MB. Max. memory is 7.1 GB. [2020-07-20 18:21:05,326 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.45 ms. Allocated memory is still 139.5 MB. Free memory is still 122.2 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 529.87 ms. Allocated memory is still 139.5 MB. Free memory was 104.5 MB in the beginning and 95.0 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 59.59 ms. Allocated memory is still 139.5 MB. Free memory was 95.0 MB in the beginning and 93.2 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 456.87 ms. Allocated memory was 139.5 MB in the beginning and 203.9 MB in the end (delta: 64.5 MB). Free memory was 93.2 MB in the beginning and 170.7 MB in the end (delta: -77.5 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 60869.15 ms. Allocated memory was 203.9 MB in the beginning and 233.3 MB in the end (delta: 29.4 MB). Free memory was 169.8 MB in the beginning and 151.4 MB in the end (delta: 18.3 MB). Peak memory consumption was 47.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 16]: 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: 30]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 25 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 60.6s, OverallIterations: 4, TraceHistogramMax: 3, AutomataDifference: 43.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 58 SDtfs, 31 SDslu, 248 SDs, 0 SdLazy, 157 SolverSat, 12 SolverUnsat, 13 SolverUnknown, 0 SolverNotchecked, 27.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 114 GetRequests, 80 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 30.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred in iteration=3, 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, 4 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 15 PreInvPairs, 24 NumberOfFragments, 8 HoareAnnotationTreeSize, 15 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 16.2s InterpolantComputationTime, 68 NumberOfCodeBlocks, 67 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 103 ConstructedInterpolants, 1 QuantifiedInterpolants, 7744 SizeOfPredicates, 12 NumberOfNonLiveVariables, 193 ConjunctsInSsa, 44 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 22/32 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...