/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks NOT_INCREMENTALLY -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ssh-simplified/s3_srvr_1b.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 11:13:13,787 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 11:13:13,790 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 11:13:13,804 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 11:13:13,804 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 11:13:13,805 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 11:13:13,807 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 11:13:13,809 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 11:13:13,811 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 11:13:13,812 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 11:13:13,814 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 11:13:13,815 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 11:13:13,815 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 11:13:13,817 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 11:13:13,818 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 11:13:13,819 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 11:13:13,820 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 11:13:13,821 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 11:13:13,824 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 11:13:13,826 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 11:13:13,831 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 11:13:13,836 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 11:13:13,839 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 11:13:13,840 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 11:13:13,846 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-21 11:13:13,846 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-21 11:13:13,846 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-21 11:13:13,847 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-21 11:13:13,848 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-21 11:13:13,849 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-21 11:13:13,851 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-21 11:13:13,852 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-21 11:13:13,853 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-21 11:13:13,854 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-21 11:13:13,860 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-21 11:13:13,860 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-21 11:13:13,861 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-21 11:13:13,861 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-21 11:13:13,862 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 11:13:13,863 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 11:13:13,866 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 11:13:13,867 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-21 11:13:13,899 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 11:13:13,899 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 11:13:13,902 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 11:13:13,902 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 11:13:13,902 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 11:13:13,902 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 11:13:13,903 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 11:13:13,903 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 11:13:13,903 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 11:13:13,903 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 11:13:13,904 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 11:13:13,905 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 11:13:13,905 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 11:13:13,906 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 11:13:13,906 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 11:13:13,906 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 11:13:13,906 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 11:13:13,907 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 11:13:13,907 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 11:13:13,907 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 11:13:13,907 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 11:13:13,907 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 11:13:13,908 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 11:13:13,908 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 11:13:13,908 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 11:13:13,908 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 11:13:13,908 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:13:13,908 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 11:13:13,909 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 11:13:13,909 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> NOT_INCREMENTALLY [2020-07-21 11:13:14,208 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 11:13:14,229 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 11:13:14,233 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 11:13:14,235 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 11:13:14,236 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 11:13:14,237 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh-simplified/s3_srvr_1b.cil.c [2020-07-21 11:13:14,329 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af093dda2/0fb71d00239f4f378c509970e1eda8b3/FLAGe7298f00f [2020-07-21 11:13:14,881 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 11:13:14,882 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ssh-simplified/s3_srvr_1b.cil.c [2020-07-21 11:13:14,891 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af093dda2/0fb71d00239f4f378c509970e1eda8b3/FLAGe7298f00f [2020-07-21 11:13:15,252 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af093dda2/0fb71d00239f4f378c509970e1eda8b3 [2020-07-21 11:13:15,267 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 11:13:15,271 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 11:13:15,272 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 11:13:15,272 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 11:13:15,276 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 11:13:15,278 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 11:13:15" (1/1) ... [2020-07-21 11:13:15,281 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b2290a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:13:15, skipping insertion in model container [2020-07-21 11:13:15,282 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 11:13:15" (1/1) ... [2020-07-21 11:13:15,291 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 11:13:15,317 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 11:13:15,508 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 11:13:15,517 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 11:13:15,543 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 11:13:15,559 INFO L208 MainTranslator]: Completed translation [2020-07-21 11:13:15,559 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:13:15 WrapperNode [2020-07-21 11:13:15,560 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 11:13:15,560 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 11:13:15,561 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 11:13:15,561 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 11:13:15,574 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:13:15" (1/1) ... [2020-07-21 11:13:15,575 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:13:15" (1/1) ... [2020-07-21 11:13:15,580 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:13:15" (1/1) ... [2020-07-21 11:13:15,581 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:13:15" (1/1) ... [2020-07-21 11:13:15,665 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:13:15" (1/1) ... [2020-07-21 11:13:15,675 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:13:15" (1/1) ... [2020-07-21 11:13:15,676 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:13:15" (1/1) ... [2020-07-21 11:13:15,678 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 11:13:15,679 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 11:13:15,679 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 11:13:15,679 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 11:13:15,680 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:13:15" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 11:13:15,752 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 11:13:15,752 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 11:13:15,752 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 11:13:15,752 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 11:13:15,753 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-07-21 11:13:15,753 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 11:13:15,753 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-07-21 11:13:15,753 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 11:13:15,753 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 11:13:15,753 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 11:13:15,984 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 11:13:15,985 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-21 11:13:15,989 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 11:13:15 BoogieIcfgContainer [2020-07-21 11:13:15,989 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 11:13:15,990 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 11:13:15,991 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 11:13:15,994 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 11:13:15,995 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 11:13:15" (1/3) ... [2020-07-21 11:13:15,996 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b573b32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 11:13:15, skipping insertion in model container [2020-07-21 11:13:15,996 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:13:15" (2/3) ... [2020-07-21 11:13:15,997 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b573b32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 11:13:15, skipping insertion in model container [2020-07-21 11:13:15,997 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 11:13:15" (3/3) ... [2020-07-21 11:13:15,999 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_srvr_1b.cil.c [2020-07-21 11:13:16,011 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 11:13:16,020 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 11:13:16,034 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 11:13:16,061 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 11:13:16,062 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 11:13:16,062 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 11:13:16,062 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 11:13:16,063 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 11:13:16,063 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 11:13:16,063 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 11:13:16,063 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 11:13:16,085 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2020-07-21 11:13:16,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-07-21 11:13:16,095 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:13:16,096 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:13:16,096 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:13:16,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:13:16,102 INFO L82 PathProgramCache]: Analyzing trace with hash -2134687016, now seen corresponding path program 1 times [2020-07-21 11:13:16,109 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:13:16,109 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [301670563] [2020-07-21 11:13:16,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:13:16,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:13:16,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 11:13:16,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:13:16,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:13:16,259 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:13:16,261 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [301670563] [2020-07-21 11:13:16,262 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:13:16,263 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 11:13:16,264 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069426498] [2020-07-21 11:13:16,270 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 11:13:16,270 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:13:16,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 11:13:16,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 11:13:16,290 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 3 states. [2020-07-21 11:13:16,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:13:16,401 INFO L93 Difference]: Finished difference Result 70 states and 116 transitions. [2020-07-21 11:13:16,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 11:13:16,404 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-07-21 11:13:16,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:13:16,415 INFO L225 Difference]: With dead ends: 70 [2020-07-21 11:13:16,416 INFO L226 Difference]: Without dead ends: 39 [2020-07-21 11:13:16,419 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 11:13:16,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-07-21 11:13:16,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-07-21 11:13:16,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-07-21 11:13:16,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 55 transitions. [2020-07-21 11:13:16,469 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 55 transitions. Word has length 8 [2020-07-21 11:13:16,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:13:16,469 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 55 transitions. [2020-07-21 11:13:16,470 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 11:13:16,470 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 55 transitions. [2020-07-21 11:13:16,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-07-21 11:13:16,471 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:13:16,471 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:13:16,686 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:13:16,687 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:13:16,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:13:16,688 INFO L82 PathProgramCache]: Analyzing trace with hash 1966827798, now seen corresponding path program 1 times [2020-07-21 11:13:16,689 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:13:16,689 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1643804323] [2020-07-21 11:13:16,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:13:16,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:13:16,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 11:13:16,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:13:16,733 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:13:16,734 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:13:16,736 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1643804323] [2020-07-21 11:13:16,736 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:13:16,736 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 11:13:16,737 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907961234] [2020-07-21 11:13:16,739 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 11:13:16,739 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:13:16,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 11:13:16,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 11:13:16,740 INFO L87 Difference]: Start difference. First operand 39 states and 55 transitions. Second operand 3 states. [2020-07-21 11:13:16,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:13:16,855 INFO L93 Difference]: Finished difference Result 73 states and 110 transitions. [2020-07-21 11:13:16,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 11:13:16,855 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2020-07-21 11:13:16,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:13:16,857 INFO L225 Difference]: With dead ends: 73 [2020-07-21 11:13:16,858 INFO L226 Difference]: Without dead ends: 55 [2020-07-21 11:13:16,859 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 11:13:16,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-07-21 11:13:16,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-07-21 11:13:16,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-07-21 11:13:16,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 78 transitions. [2020-07-21 11:13:16,871 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 78 transitions. Word has length 13 [2020-07-21 11:13:16,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:13:16,872 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 78 transitions. [2020-07-21 11:13:16,872 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 11:13:16,873 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 78 transitions. [2020-07-21 11:13:16,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-07-21 11:13:16,874 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:13:16,874 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:13:17,075 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:13:17,077 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:13:17,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:13:17,078 INFO L82 PathProgramCache]: Analyzing trace with hash 280007728, now seen corresponding path program 1 times [2020-07-21 11:13:17,079 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:13:17,081 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1914451221] [2020-07-21 11:13:17,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:13:17,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:13:17,120 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 11:13:17,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:13:17,139 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-07-21 11:13:17,139 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:13:17,140 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1914451221] [2020-07-21 11:13:17,140 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:13:17,141 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 11:13:17,141 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71354280] [2020-07-21 11:13:17,142 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 11:13:17,142 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:13:17,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 11:13:17,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 11:13:17,143 INFO L87 Difference]: Start difference. First operand 55 states and 78 transitions. Second operand 3 states. [2020-07-21 11:13:17,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:13:17,209 INFO L93 Difference]: Finished difference Result 107 states and 157 transitions. [2020-07-21 11:13:17,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 11:13:17,210 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-07-21 11:13:17,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:13:17,211 INFO L225 Difference]: With dead ends: 107 [2020-07-21 11:13:17,212 INFO L226 Difference]: Without dead ends: 73 [2020-07-21 11:13:17,213 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 11:13:17,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-07-21 11:13:17,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 71. [2020-07-21 11:13:17,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-07-21 11:13:17,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 103 transitions. [2020-07-21 11:13:17,227 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 103 transitions. Word has length 20 [2020-07-21 11:13:17,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:13:17,228 INFO L479 AbstractCegarLoop]: Abstraction has 71 states and 103 transitions. [2020-07-21 11:13:17,228 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 11:13:17,228 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 103 transitions. [2020-07-21 11:13:17,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-07-21 11:13:17,229 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:13:17,229 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:13:17,442 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:13:17,443 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:13:17,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:13:17,444 INFO L82 PathProgramCache]: Analyzing trace with hash 885328029, now seen corresponding path program 1 times [2020-07-21 11:13:17,445 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:13:17,445 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [127839365] [2020-07-21 11:13:17,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:13:17,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:13:17,496 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 11:13:17,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:13:17,516 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-07-21 11:13:17,517 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:13:17,517 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [127839365] [2020-07-21 11:13:17,518 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:13:17,518 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 11:13:17,518 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450772642] [2020-07-21 11:13:17,519 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 11:13:17,519 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:13:17,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 11:13:17,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 11:13:17,524 INFO L87 Difference]: Start difference. First operand 71 states and 103 transitions. Second operand 3 states. [2020-07-21 11:13:17,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:13:17,623 INFO L93 Difference]: Finished difference Result 141 states and 205 transitions. [2020-07-21 11:13:17,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 11:13:17,625 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-07-21 11:13:17,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:13:17,626 INFO L225 Difference]: With dead ends: 141 [2020-07-21 11:13:17,626 INFO L226 Difference]: Without dead ends: 61 [2020-07-21 11:13:17,628 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 11:13:17,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-07-21 11:13:17,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 59. [2020-07-21 11:13:17,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-07-21 11:13:17,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 75 transitions. [2020-07-21 11:13:17,640 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 75 transitions. Word has length 23 [2020-07-21 11:13:17,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:13:17,641 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 75 transitions. [2020-07-21 11:13:17,641 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 11:13:17,641 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 75 transitions. [2020-07-21 11:13:17,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-07-21 11:13:17,643 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:13:17,643 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:13:17,856 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:13:17,857 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:13:17,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:13:17,859 INFO L82 PathProgramCache]: Analyzing trace with hash 1155086362, now seen corresponding path program 1 times [2020-07-21 11:13:17,859 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:13:17,860 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [606720312] [2020-07-21 11:13:17,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:13:17,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:13:17,894 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 11:13:17,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:13:17,912 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-07-21 11:13:17,913 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:13:17,913 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [606720312] [2020-07-21 11:13:17,913 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:13:17,913 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 11:13:17,914 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31529045] [2020-07-21 11:13:17,914 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 11:13:17,915 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:13:17,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 11:13:17,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 11:13:17,916 INFO L87 Difference]: Start difference. First operand 59 states and 75 transitions. Second operand 3 states. [2020-07-21 11:13:18,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:13:18,022 INFO L93 Difference]: Finished difference Result 73 states and 93 transitions. [2020-07-21 11:13:18,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 11:13:18,023 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 37 [2020-07-21 11:13:18,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:13:18,024 INFO L225 Difference]: With dead ends: 73 [2020-07-21 11:13:18,024 INFO L226 Difference]: Without dead ends: 71 [2020-07-21 11:13:18,025 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 11:13:18,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-07-21 11:13:18,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2020-07-21 11:13:18,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-07-21 11:13:18,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 91 transitions. [2020-07-21 11:13:18,049 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 91 transitions. Word has length 37 [2020-07-21 11:13:18,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:13:18,050 INFO L479 AbstractCegarLoop]: Abstraction has 71 states and 91 transitions. [2020-07-21 11:13:18,050 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 11:13:18,050 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 91 transitions. [2020-07-21 11:13:18,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-07-21 11:13:18,052 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:13:18,052 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:13:18,265 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:13:18,266 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:13:18,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:13:18,266 INFO L82 PathProgramCache]: Analyzing trace with hash 970856213, now seen corresponding path program 1 times [2020-07-21 11:13:18,267 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:13:18,267 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1465837949] [2020-07-21 11:13:18,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:13:18,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:13:18,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 11:13:18,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:13:18,312 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-07-21 11:13:18,312 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:13:18,313 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1465837949] [2020-07-21 11:13:18,313 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:13:18,313 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 11:13:18,314 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099961567] [2020-07-21 11:13:18,314 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 11:13:18,314 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:13:18,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 11:13:18,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 11:13:18,315 INFO L87 Difference]: Start difference. First operand 71 states and 91 transitions. Second operand 3 states. [2020-07-21 11:13:18,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:13:18,362 INFO L93 Difference]: Finished difference Result 145 states and 182 transitions. [2020-07-21 11:13:18,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 11:13:18,363 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-07-21 11:13:18,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:13:18,365 INFO L225 Difference]: With dead ends: 145 [2020-07-21 11:13:18,365 INFO L226 Difference]: Without dead ends: 91 [2020-07-21 11:13:18,366 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 11:13:18,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-07-21 11:13:18,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2020-07-21 11:13:18,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-07-21 11:13:18,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 111 transitions. [2020-07-21 11:13:18,378 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 111 transitions. Word has length 46 [2020-07-21 11:13:18,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:13:18,378 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 111 transitions. [2020-07-21 11:13:18,378 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 11:13:18,379 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 111 transitions. [2020-07-21 11:13:18,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-07-21 11:13:18,381 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:13:18,381 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:13:18,595 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:13:18,596 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:13:18,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:13:18,597 INFO L82 PathProgramCache]: Analyzing trace with hash 73406346, now seen corresponding path program 1 times [2020-07-21 11:13:18,598 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:13:18,598 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [634219759] [2020-07-21 11:13:18,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) [2020-07-21 11:13:18,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:13:18,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-21 11:13:18,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:13:18,651 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-07-21 11:13:18,652 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:13:18,652 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [634219759] [2020-07-21 11:13:18,653 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:13:18,653 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 11:13:18,658 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803231061] [2020-07-21 11:13:18,659 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 11:13:18,659 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:13:18,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 11:13:18,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 11:13:18,660 INFO L87 Difference]: Start difference. First operand 91 states and 111 transitions. Second operand 3 states. [2020-07-21 11:13:18,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:13:18,685 INFO L93 Difference]: Finished difference Result 139 states and 164 transitions. [2020-07-21 11:13:18,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 11:13:18,685 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 53 [2020-07-21 11:13:18,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:13:18,686 INFO L225 Difference]: With dead ends: 139 [2020-07-21 11:13:18,686 INFO L226 Difference]: Without dead ends: 0 [2020-07-21 11:13:18,687 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 11:13:18,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-21 11:13:18,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-21 11:13:18,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-21 11:13:18,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-21 11:13:18,688 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 53 [2020-07-21 11:13:18,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:13:18,689 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-21 11:13:18,689 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 11:13:18,689 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-21 11:13:18,689 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-21 11:13:18,897 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:13:18,902 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-21 11:13:19,231 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-07-21 11:13:19,232 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-21 11:13:19,232 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-21 11:13:19,232 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-21 11:13:19,232 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-21 11:13:19,232 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-21 11:13:19,232 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 8 140) no Hoare annotation was computed. [2020-07-21 11:13:19,232 INFO L268 CegarLoopResult]: For program point L77-1(lines 53 106) no Hoare annotation was computed. [2020-07-21 11:13:19,233 INFO L268 CegarLoopResult]: For program point L69(lines 69 73) no Hoare annotation was computed. [2020-07-21 11:13:19,233 INFO L268 CegarLoopResult]: For program point L24(lines 24 127) no Hoare annotation was computed. [2020-07-21 11:13:19,233 INFO L268 CegarLoopResult]: For program point L57-1(lines 53 106) no Hoare annotation was computed. [2020-07-21 11:13:19,233 INFO L268 CegarLoopResult]: For program point L49(lines 49 108) no Hoare annotation was computed. [2020-07-21 11:13:19,233 INFO L268 CegarLoopResult]: For program point L45(lines 45 110) no Hoare annotation was computed. [2020-07-21 11:13:19,233 INFO L271 CegarLoopResult]: At program point L136(lines 8 140) the Hoare annotation is: true [2020-07-21 11:13:19,234 INFO L264 CegarLoopResult]: At program point L99(lines 17 134) the Hoare annotation is: (or (and (not (= 0 main_~s__hit~0)) (<= main_~s__state~0 8640) (<= main_~blastFlag~0 3) (<= 8640 main_~s__state~0)) (<= main_~blastFlag~0 2)) [2020-07-21 11:13:19,234 INFO L268 CegarLoopResult]: For program point L95(lines 95 97) no Hoare annotation was computed. [2020-07-21 11:13:19,234 INFO L268 CegarLoopResult]: For program point L29(lines 29 124) no Hoare annotation was computed. [2020-07-21 11:13:19,234 INFO L264 CegarLoopResult]: At program point L25(lines 24 127) the Hoare annotation is: (and (<= main_~s__state~0 8640) (<= main_~blastFlag~0 2)) [2020-07-21 11:13:19,234 INFO L264 CegarLoopResult]: At program point L50(lines 49 108) the Hoare annotation is: (and (<= main_~blastFlag~0 2) (<= 8640 main_~s__state~0)) [2020-07-21 11:13:19,235 INFO L264 CegarLoopResult]: At program point L46(lines 45 110) the Hoare annotation is: (let ((.cse1 (<= main_~s__state~0 8640)) (.cse0 (<= 8640 main_~s__state~0))) (or (and (<= main_~blastFlag~0 0) .cse0) (and (not (= 0 main_~s__hit~0)) .cse1 (<= main_~blastFlag~0 3) .cse0) (and .cse1 (<= main_~blastFlag~0 2) .cse0))) [2020-07-21 11:13:19,235 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 8 140) no Hoare annotation was computed. [2020-07-21 11:13:19,235 INFO L264 CegarLoopResult]: At program point L96(lines 8 140) the Hoare annotation is: false [2020-07-21 11:13:19,235 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 138) no Hoare annotation was computed. [2020-07-21 11:13:19,235 INFO L264 CegarLoopResult]: At program point L30(lines 29 124) the Hoare annotation is: (and (<= main_~s__state~0 8640) (<= main_~blastFlag~0 2)) [2020-07-21 11:13:19,236 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 8 140) the Hoare annotation is: true [2020-07-21 11:13:19,236 INFO L268 CegarLoopResult]: For program point L92-1(lines 53 106) no Hoare annotation was computed. [2020-07-21 11:13:19,236 INFO L268 CegarLoopResult]: For program point L88-1(lines 53 106) no Hoare annotation was computed. [2020-07-21 11:13:19,236 INFO L268 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2020-07-21 11:13:19,259 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 11:13:19 BoogieIcfgContainer [2020-07-21 11:13:19,259 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 11:13:19,262 INFO L168 Benchmark]: Toolchain (without parser) took 3992.28 ms. Allocated memory was 138.4 MB in the beginning and 235.4 MB in the end (delta: 97.0 MB). Free memory was 102.3 MB in the beginning and 146.2 MB in the end (delta: -43.9 MB). Peak memory consumption was 53.1 MB. Max. memory is 7.1 GB. [2020-07-21 11:13:19,263 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 138.4 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-07-21 11:13:19,264 INFO L168 Benchmark]: CACSL2BoogieTranslator took 288.25 ms. Allocated memory is still 138.4 MB. Free memory was 102.1 MB in the beginning and 91.8 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. [2020-07-21 11:13:19,265 INFO L168 Benchmark]: Boogie Preprocessor took 118.12 ms. Allocated memory was 138.4 MB in the beginning and 202.4 MB in the end (delta: 64.0 MB). Free memory was 91.8 MB in the beginning and 181.1 MB in the end (delta: -89.4 MB). Peak memory consumption was 14.6 MB. Max. memory is 7.1 GB. [2020-07-21 11:13:19,266 INFO L168 Benchmark]: RCFGBuilder took 310.28 ms. Allocated memory is still 202.4 MB. Free memory was 181.1 MB in the beginning and 167.2 MB in the end (delta: 13.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. [2020-07-21 11:13:19,267 INFO L168 Benchmark]: TraceAbstraction took 3268.50 ms. Allocated memory was 202.4 MB in the beginning and 235.4 MB in the end (delta: 33.0 MB). Free memory was 166.6 MB in the beginning and 146.2 MB in the end (delta: 20.3 MB). Peak memory consumption was 53.4 MB. Max. memory is 7.1 GB. [2020-07-21 11:13:19,272 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 138.4 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 288.25 ms. Allocated memory is still 138.4 MB. Free memory was 102.1 MB in the beginning and 91.8 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 118.12 ms. Allocated memory was 138.4 MB in the beginning and 202.4 MB in the end (delta: 64.0 MB). Free memory was 91.8 MB in the beginning and 181.1 MB in the end (delta: -89.4 MB). Peak memory consumption was 14.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 310.28 ms. Allocated memory is still 202.4 MB. Free memory was 181.1 MB in the beginning and 167.2 MB in the end (delta: 13.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3268.50 ms. Allocated memory was 202.4 MB in the beginning and 235.4 MB in the end (delta: 33.0 MB). Free memory was 166.6 MB in the beginning and 146.2 MB in the end (delta: 20.3 MB). Peak memory consumption was 53.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 138]: 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: 49]: Loop Invariant Derived loop invariant: blastFlag <= 2 && 8640 <= s__state - InvariantResult [Line: 8]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: (((!(0 == s__hit) && s__state <= 8640) && blastFlag <= 3) && 8640 <= s__state) || blastFlag <= 2 - InvariantResult [Line: 29]: Loop Invariant Derived loop invariant: s__state <= 8640 && blastFlag <= 2 - InvariantResult [Line: 45]: Loop Invariant Derived loop invariant: ((blastFlag <= 0 && 8640 <= s__state) || (((!(0 == s__hit) && s__state <= 8640) && blastFlag <= 3) && 8640 <= s__state)) || ((s__state <= 8640 && blastFlag <= 2) && 8640 <= s__state) - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: s__state <= 8640 && blastFlag <= 2 - InvariantResult [Line: 8]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 28 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.8s, OverallIterations: 7, TraceHistogramMax: 6, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 197 SDtfs, 100 SDslu, 123 SDs, 0 SdLazy, 108 SolverSat, 29 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 193 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=91occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 11 LocationsWithAnnotation, 11 PreInvPairs, 32 NumberOfFragments, 77 HoareAnnotationTreeSize, 11 FomulaSimplifications, 140 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 11 FomulaSimplificationsInter, 86 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 200 NumberOfCodeBlocks, 200 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 193 ConstructedInterpolants, 0 QuantifiedInterpolants, 11239 SizeOfPredicates, 6 NumberOfNonLiveVariables, 402 ConjunctsInSsa, 15 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 171/171 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...