/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/loop-lit/ddlm2013.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 17:55:43,000 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 17:55:43,004 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 17:55:43,025 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 17:55:43,026 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 17:55:43,027 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 17:55:43,029 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 17:55:43,032 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 17:55:43,034 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 17:55:43,035 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 17:55:43,037 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 17:55:43,038 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 17:55:43,039 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 17:55:43,040 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 17:55:43,041 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 17:55:43,043 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 17:55:43,044 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 17:55:43,046 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 17:55:43,048 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 17:55:43,050 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 17:55:43,052 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 17:55:43,054 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 17:55:43,055 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 17:55:43,057 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 17:55:43,060 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 17:55:43,070 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 17:55:43,071 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 17:55:43,072 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 17:55:43,073 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 17:55:43,090 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 17:55:43,090 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 17:55:43,092 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 17:55:43,092 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 17:55:43,093 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 17:55:43,093 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 17:55:43,093 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 17:55:43,093 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 17:55:43,093 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 17:55:43,094 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 17:55:43,094 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 17:55:43,094 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 17:55:43,094 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 17:55:43,095 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 17:55:43,095 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 17:55:43,095 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 17:55:43,095 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 17:55:43,095 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 17:55:43,096 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 17:55:43,096 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 17:55:43,096 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 17:55:43,096 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 17:55:43,096 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 17:55:43,097 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 17:55:43,097 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 17:55:43,097 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 17:55:43,097 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 17:55:43,098 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 17:55:43,098 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 17:55:43,098 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 17:55:43,431 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 17:55:43,448 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 17:55:43,452 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 17:55:43,454 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 17:55:43,455 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 17:55:43,456 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/ddlm2013.i [2020-07-20 17:55:43,542 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c984b6f2f/a819de6f95234b6bb79605b9d377b225/FLAG29f9810c7 [2020-07-20 17:55:44,128 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 17:55:44,129 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/ddlm2013.i [2020-07-20 17:55:44,140 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c984b6f2f/a819de6f95234b6bb79605b9d377b225/FLAG29f9810c7 [2020-07-20 17:55:44,470 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c984b6f2f/a819de6f95234b6bb79605b9d377b225 [2020-07-20 17:55:44,482 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 17:55:44,485 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 17:55:44,487 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 17:55:44,487 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 17:55:44,492 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 17:55:44,493 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 05:55:44" (1/1) ... [2020-07-20 17:55:44,497 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4abea034 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:55:44, skipping insertion in model container [2020-07-20 17:55:44,498 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 05:55:44" (1/1) ... [2020-07-20 17:55:44,508 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 17:55:44,536 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 17:55:44,743 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 17:55:44,750 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 17:55:44,771 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 17:55:44,789 INFO L208 MainTranslator]: Completed translation [2020-07-20 17:55:44,790 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:55:44 WrapperNode [2020-07-20 17:55:44,790 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 17:55:44,791 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 17:55:44,791 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 17:55:44,792 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 17:55:44,810 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:55:44" (1/1) ... [2020-07-20 17:55:44,811 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:55:44" (1/1) ... [2020-07-20 17:55:44,818 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:55:44" (1/1) ... [2020-07-20 17:55:44,818 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:55:44" (1/1) ... [2020-07-20 17:55:44,910 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:55:44" (1/1) ... [2020-07-20 17:55:44,917 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:55:44" (1/1) ... [2020-07-20 17:55:44,919 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:55:44" (1/1) ... [2020-07-20 17:55:44,921 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 17:55:44,922 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 17:55:44,922 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 17:55:44,922 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 17:55:44,923 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:55:44" (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 17:55:44,999 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 17:55:44,999 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 17:55:45,000 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-20 17:55:45,000 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-20 17:55:45,000 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 17:55:45,000 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 17:55:45,000 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-20 17:55:45,001 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-20 17:55:45,001 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-20 17:55:45,001 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 17:55:45,001 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 17:55:45,001 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 17:55:45,001 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 17:55:45,303 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 17:55:45,303 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-20 17:55:45,310 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 05:55:45 BoogieIcfgContainer [2020-07-20 17:55:45,311 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 17:55:45,323 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 17:55:45,323 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 17:55:45,328 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 17:55:45,329 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 05:55:44" (1/3) ... [2020-07-20 17:55:45,341 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e2c9014 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 05:55:45, skipping insertion in model container [2020-07-20 17:55:45,341 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:55:44" (2/3) ... [2020-07-20 17:55:45,342 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e2c9014 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 05:55:45, skipping insertion in model container [2020-07-20 17:55:45,342 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 05:55:45" (3/3) ... [2020-07-20 17:55:45,347 INFO L109 eAbstractionObserver]: Analyzing ICFG ddlm2013.i [2020-07-20 17:55:45,381 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 17:55:45,390 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 17:55:45,408 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 17:55:45,440 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 17:55:45,440 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 17:55:45,440 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 17:55:45,440 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 17:55:45,441 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 17:55:45,441 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 17:55:45,441 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 17:55:45,441 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 17:55:45,464 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2020-07-20 17:55:45,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-07-20 17:55:45,472 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 17:55:45,474 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 17:55:45,475 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 17:55:45,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 17:55:45,483 INFO L82 PathProgramCache]: Analyzing trace with hash -917653371, now seen corresponding path program 1 times [2020-07-20 17:55:45,492 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 17:55:45,493 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [956867327] [2020-07-20 17:55:45,493 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 17:55:45,573 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 17:55:45,574 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 17:55:45,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-20 17:55:45,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 17:55:45,603 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 17:55:45,603 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 17:55:45,604 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [956867327] [2020-07-20 17:55:45,605 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 17:55:45,605 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-20 17:55:45,607 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121321591] [2020-07-20 17:55:45,612 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-20 17:55:45,613 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 17:55:45,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-20 17:55:45,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-20 17:55:45,630 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 2 states. [2020-07-20 17:55:45,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 17:55:45,661 INFO L93 Difference]: Finished difference Result 35 states and 42 transitions. [2020-07-20 17:55:45,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-20 17:55:45,662 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2020-07-20 17:55:45,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 17:55:45,672 INFO L225 Difference]: With dead ends: 35 [2020-07-20 17:55:45,673 INFO L226 Difference]: Without dead ends: 15 [2020-07-20 17:55:45,677 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 11 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 17:55:45,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-07-20 17:55:45,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-07-20 17:55:45,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-07-20 17:55:45,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2020-07-20 17:55:45,726 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 12 [2020-07-20 17:55:45,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 17:55:45,727 INFO L479 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2020-07-20 17:55:45,727 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-20 17:55:45,727 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2020-07-20 17:55:45,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-07-20 17:55:45,728 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 17:55:45,728 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 17:55:45,942 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 17:55:45,943 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 17:55:45,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 17:55:45,944 INFO L82 PathProgramCache]: Analyzing trace with hash -1750778295, now seen corresponding path program 1 times [2020-07-20 17:55:45,944 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 17:55:45,945 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1052509947] [2020-07-20 17:55:45,945 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 17:55:45,990 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 17:55:45,991 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 17:55:45,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-20 17:55:45,994 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 17:55:46,017 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 17:55:46,018 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 17:55:46,018 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1052509947] [2020-07-20 17:55:46,019 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 17:55:46,019 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 17:55:46,019 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008284719] [2020-07-20 17:55:46,021 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 17:55:46,021 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 17:55:46,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 17:55:46,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 17:55:46,022 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand 3 states. [2020-07-20 17:55:46,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 17:55:46,043 INFO L93 Difference]: Finished difference Result 24 states and 27 transitions. [2020-07-20 17:55:46,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 17:55:46,044 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2020-07-20 17:55:46,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 17:55:46,045 INFO L225 Difference]: With dead ends: 24 [2020-07-20 17:55:46,045 INFO L226 Difference]: Without dead ends: 15 [2020-07-20 17:55:46,047 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 17:55:46,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-07-20 17:55:46,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-07-20 17:55:46,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-07-20 17:55:46,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2020-07-20 17:55:46,052 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 13 [2020-07-20 17:55:46,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 17:55:46,053 INFO L479 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2020-07-20 17:55:46,053 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 17:55:46,053 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2020-07-20 17:55:46,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-07-20 17:55:46,054 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 17:55:46,054 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 17:55:46,263 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 17:55:46,264 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 17:55:46,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 17:55:46,265 INFO L82 PathProgramCache]: Analyzing trace with hash -941431669, now seen corresponding path program 1 times [2020-07-20 17:55:46,266 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 17:55:46,267 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1395966742] [2020-07-20 17:55:46,267 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 17:55:46,307 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 17:55:46,307 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 17:55:46,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 9 conjunts are in the unsatisfiable core [2020-07-20 17:55:46,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 17:55:46,384 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 17:55:46,385 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 17:55:46,385 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1395966742] [2020-07-20 17:55:46,386 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 17:55:46,386 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 17:55:46,386 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649474321] [2020-07-20 17:55:46,387 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 17:55:46,387 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 17:55:46,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 17:55:46,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 17:55:46,389 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand 5 states. [2020-07-20 17:55:46,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 17:55:46,430 INFO L93 Difference]: Finished difference Result 23 states and 24 transitions. [2020-07-20 17:55:46,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 17:55:46,431 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-07-20 17:55:46,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 17:55:46,432 INFO L225 Difference]: With dead ends: 23 [2020-07-20 17:55:46,432 INFO L226 Difference]: Without dead ends: 17 [2020-07-20 17:55:46,433 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 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 17:55:46,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-07-20 17:55:46,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2020-07-20 17:55:46,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-07-20 17:55:46,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2020-07-20 17:55:46,440 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 13 [2020-07-20 17:55:46,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 17:55:46,441 INFO L479 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2020-07-20 17:55:46,441 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 17:55:46,441 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2020-07-20 17:55:46,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-07-20 17:55:46,442 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 17:55:46,442 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 17:55:46,658 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 17:55:46,659 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 17:55:46,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 17:55:46,660 INFO L82 PathProgramCache]: Analyzing trace with hash 447870728, now seen corresponding path program 1 times [2020-07-20 17:55:46,661 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 17:55:46,661 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [753855776] [2020-07-20 17:55:46,661 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 17:55:46,709 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-20 17:55:46,710 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 17:55:46,711 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-20 17:55:46,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 17:55:46,747 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 17:55:46,747 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 17:55:46,748 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [753855776] [2020-07-20 17:55:46,748 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 17:55:46,748 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 17:55:46,749 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404692542] [2020-07-20 17:55:46,753 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 17:55:46,754 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 17:55:46,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 17:55:46,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 17:55:46,755 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand 4 states. [2020-07-20 17:55:46,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 17:55:46,789 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2020-07-20 17:55:46,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 17:55:46,790 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2020-07-20 17:55:46,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 17:55:46,792 INFO L225 Difference]: With dead ends: 31 [2020-07-20 17:55:46,793 INFO L226 Difference]: Without dead ends: 22 [2020-07-20 17:55:46,793 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 17:55:46,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-07-20 17:55:46,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 18. [2020-07-20 17:55:46,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-07-20 17:55:46,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2020-07-20 17:55:46,800 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 16 [2020-07-20 17:55:46,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 17:55:46,801 INFO L479 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2020-07-20 17:55:46,801 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 17:55:46,801 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2020-07-20 17:55:46,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-07-20 17:55:46,802 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 17:55:46,802 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 17:55:47,018 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 17:55:47,019 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 17:55:47,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 17:55:47,020 INFO L82 PathProgramCache]: Analyzing trace with hash 1257217354, now seen corresponding path program 1 times [2020-07-20 17:55:47,020 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 17:55:47,021 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1533318775] [2020-07-20 17:55:47,021 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 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 17:55:47,060 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 17:55:47,060 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 17:55:47,062 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 15 conjunts are in the unsatisfiable core [2020-07-20 17:55:47,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 17:55:47,157 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 17:55:47,158 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 17:55:47,197 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 17:55:47,291 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 17:55:47,291 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1533318775] [2020-07-20 17:55:47,292 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 17:55:47,292 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2020-07-20 17:55:47,293 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313313599] [2020-07-20 17:55:47,293 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-20 17:55:47,294 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 17:55:47,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-20 17:55:47,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-07-20 17:55:47,295 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 10 states. [2020-07-20 17:55:47,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 17:55:47,420 INFO L93 Difference]: Finished difference Result 26 states and 27 transitions. [2020-07-20 17:55:47,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-20 17:55:47,421 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 16 [2020-07-20 17:55:47,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 17:55:47,422 INFO L225 Difference]: With dead ends: 26 [2020-07-20 17:55:47,422 INFO L226 Difference]: Without dead ends: 20 [2020-07-20 17:55:47,423 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-07-20 17:55:47,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-07-20 17:55:47,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2020-07-20 17:55:47,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-07-20 17:55:47,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2020-07-20 17:55:47,428 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 16 [2020-07-20 17:55:47,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 17:55:47,428 INFO L479 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2020-07-20 17:55:47,428 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-20 17:55:47,429 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2020-07-20 17:55:47,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-07-20 17:55:47,430 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 17:55:47,430 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 17:55:47,630 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 17:55:47,631 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 17:55:47,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 17:55:47,632 INFO L82 PathProgramCache]: Analyzing trace with hash -2145316375, now seen corresponding path program 1 times [2020-07-20 17:55:47,632 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 17:55:47,633 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1830516305] [2020-07-20 17:55:47,633 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 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 17:55:47,672 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-20 17:55:47,673 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 17:55:47,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 17:55:47,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 17:55:47,708 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-07-20 17:55:47,711 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-20 17:55:47,716 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-20 17:55:47,719 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-20 17:55:47,742 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 17:55:47,742 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 17:55:47,742 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1830516305] [2020-07-20 17:55:47,743 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 17:55:47,743 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 17:55:47,743 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084994865] [2020-07-20 17:55:47,744 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 17:55:47,744 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 17:55:47,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 17:55:47,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 17:55:47,745 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand 3 states. [2020-07-20 17:55:47,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 17:55:47,758 INFO L93 Difference]: Finished difference Result 29 states and 31 transitions. [2020-07-20 17:55:47,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 17:55:47,759 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-07-20 17:55:47,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 17:55:47,760 INFO L225 Difference]: With dead ends: 29 [2020-07-20 17:55:47,760 INFO L226 Difference]: Without dead ends: 20 [2020-07-20 17:55:47,761 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 17:55:47,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-07-20 17:55:47,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2020-07-20 17:55:47,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-07-20 17:55:47,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2020-07-20 17:55:47,765 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 19 [2020-07-20 17:55:47,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 17:55:47,766 INFO L479 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2020-07-20 17:55:47,766 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 17:55:47,766 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2020-07-20 17:55:47,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-07-20 17:55:47,767 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 17:55:47,767 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 17:55:47,979 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 17:55:47,980 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 17:55:47,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 17:55:47,981 INFO L82 PathProgramCache]: Analyzing trace with hash -1335969749, now seen corresponding path program 2 times [2020-07-20 17:55:47,982 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 17:55:47,982 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1926207130] [2020-07-20 17:55:47,982 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 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 17:55:48,021 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 17:55:48,022 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 17:55:48,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 23 conjunts are in the unsatisfiable core [2020-07-20 17:55:48,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 17:55:48,173 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 17:55:48,174 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 17:55:48,202 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 17:55:48,391 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 17:55:48,391 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1926207130] [2020-07-20 17:55:48,392 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 17:55:48,392 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2020-07-20 17:55:48,393 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798477448] [2020-07-20 17:55:48,394 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-07-20 17:55:48,394 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 17:55:48,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-07-20 17:55:48,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2020-07-20 17:55:48,395 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand 14 states. [2020-07-20 17:55:57,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 17:55:57,066 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2020-07-20 17:55:57,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-07-20 17:55:57,066 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 19 [2020-07-20 17:55:57,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 17:55:57,066 INFO L225 Difference]: With dead ends: 25 [2020-07-20 17:55:57,067 INFO L226 Difference]: Without dead ends: 0 [2020-07-20 17:55:57,067 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 23 SyntacticMatches, 3 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=68, Invalid=273, Unknown=1, NotChecked=0, Total=342 [2020-07-20 17:55:57,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-20 17:55:57,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-20 17:55:57,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-20 17:55:57,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-20 17:55:57,068 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2020-07-20 17:55:57,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 17:55:57,069 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-20 17:55:57,069 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-07-20 17:55:57,069 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-20 17:55:57,069 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-20 17:55:57,270 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 17:55:57,274 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-20 17:55:57,478 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 31 [2020-07-20 17:55:57,482 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-07-20 17:55:57,482 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-20 17:55:57,483 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-20 17:55:57,483 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-20 17:55:57,483 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-20 17:55:57,483 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-20 17:55:57,483 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-07-20 17:55:57,483 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-07-20 17:55:57,483 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 5) no Hoare annotation was computed. [2020-07-20 17:55:57,484 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-07-20 17:55:57,484 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 13 38) no Hoare annotation was computed. [2020-07-20 17:55:57,484 INFO L268 CegarLoopResult]: For program point L19(lines 19 23) no Hoare annotation was computed. [2020-07-20 17:55:57,484 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 13 38) no Hoare annotation was computed. [2020-07-20 17:55:57,484 INFO L268 CegarLoopResult]: For program point L34(lines 34 36) no Hoare annotation was computed. [2020-07-20 17:55:57,484 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 38) the Hoare annotation is: true [2020-07-20 17:55:57,484 INFO L268 CegarLoopResult]: For program point L28(lines 28 32) no Hoare annotation was computed. [2020-07-20 17:55:57,485 INFO L268 CegarLoopResult]: For program point L28-2(lines 13 38) no Hoare annotation was computed. [2020-07-20 17:55:57,485 INFO L268 CegarLoopResult]: For program point L24(lines 24 33) no Hoare annotation was computed. [2020-07-20 17:55:57,485 INFO L268 CegarLoopResult]: For program point L24-2(lines 13 38) no Hoare annotation was computed. [2020-07-20 17:55:57,485 INFO L264 CegarLoopResult]: At program point L35(line 35) the Hoare annotation is: (or (and (= (mod (+ main_~j~0 main_~b~0 (* main_~i~0 4294967295)) 4294967296) (mod (+ main_~a~0 1) 4294967296)) (= (mod main_~b~0 4294967296) (mod main_~a~0 4294967296)) (<= (mod main_~i~0 2) 0)) (and (= 1 main_~b~0) (= 1 main_~a~0)) (and (= 0 main_~a~0) (= 0 main_~b~0))) [2020-07-20 17:55:57,485 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-07-20 17:55:57,485 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 6 11) no Hoare annotation was computed. [2020-07-20 17:55:57,486 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-07-20 17:55:57,486 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-07-20 17:55:57,486 INFO L268 CegarLoopResult]: For program point L7-2(lines 6 11) no Hoare annotation was computed. [2020-07-20 17:55:57,486 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-07-20 17:55:57,493 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 05:55:57 BoogieIcfgContainer [2020-07-20 17:55:57,493 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 17:55:57,496 INFO L168 Benchmark]: Toolchain (without parser) took 13011.81 ms. Allocated memory was 137.4 MB in the beginning and 232.8 MB in the end (delta: 95.4 MB). Free memory was 100.2 MB in the beginning and 121.4 MB in the end (delta: -21.1 MB). Peak memory consumption was 74.3 MB. Max. memory is 7.1 GB. [2020-07-20 17:55:57,497 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 137.4 MB. Free memory was 119.2 MB in the beginning and 119.0 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-20 17:55:57,498 INFO L168 Benchmark]: CACSL2BoogieTranslator took 304.03 ms. Allocated memory is still 137.4 MB. Free memory was 100.0 MB in the beginning and 90.3 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. [2020-07-20 17:55:57,499 INFO L168 Benchmark]: Boogie Preprocessor took 129.78 ms. Allocated memory was 137.4 MB in the beginning and 201.9 MB in the end (delta: 64.5 MB). Free memory was 90.3 MB in the beginning and 181.1 MB in the end (delta: -90.8 MB). Peak memory consumption was 14.6 MB. Max. memory is 7.1 GB. [2020-07-20 17:55:57,500 INFO L168 Benchmark]: RCFGBuilder took 389.24 ms. Allocated memory is still 201.9 MB. Free memory was 181.1 MB in the beginning and 167.6 MB in the end (delta: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. [2020-07-20 17:55:57,501 INFO L168 Benchmark]: TraceAbstraction took 12170.55 ms. Allocated memory was 201.9 MB in the beginning and 232.8 MB in the end (delta: 30.9 MB). Free memory was 166.9 MB in the beginning and 121.4 MB in the end (delta: 45.5 MB). Peak memory consumption was 76.5 MB. Max. memory is 7.1 GB. [2020-07-20 17:55:57,506 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 137.4 MB. Free memory was 119.2 MB in the beginning and 119.0 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 304.03 ms. Allocated memory is still 137.4 MB. Free memory was 100.0 MB in the beginning and 90.3 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 129.78 ms. Allocated memory was 137.4 MB in the beginning and 201.9 MB in the end (delta: 64.5 MB). Free memory was 90.3 MB in the beginning and 181.1 MB in the end (delta: -90.8 MB). Peak memory consumption was 14.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 389.24 ms. Allocated memory is still 201.9 MB. Free memory was 181.1 MB in the beginning and 167.6 MB in the end (delta: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 12170.55 ms. Allocated memory was 201.9 MB in the beginning and 232.8 MB in the end (delta: 30.9 MB). Free memory was 166.9 MB in the beginning and 121.4 MB in the end (delta: 45.5 MB). Peak memory consumption was 76.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 8]: 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 26 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 11.8s, OverallIterations: 7, TraceHistogramMax: 3, AutomataDifference: 8.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 110 SDtfs, 30 SDslu, 228 SDs, 0 SdLazy, 108 SolverSat, 8 SolverUnsat, 3 SolverUnknown, 0 SolverNotchecked, 6.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 145 GetRequests, 105 SyntacticMatches, 5 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 3.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=0, 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, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 13 PreInvPairs, 17 NumberOfFragments, 47 HoareAnnotationTreeSize, 13 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 6 FomulaSimplificationsInter, 26 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 108 NumberOfCodeBlocks, 81 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 134 ConstructedInterpolants, 0 QuantifiedInterpolants, 8911 SizeOfPredicates, 10 NumberOfNonLiveVariables, 285 ConjunctsInSsa, 60 ConjunctsInUnsatCore, 9 InterpolantComputations, 5 PerfectInterpolantSequences, 9/27 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...