/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --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 --traceabstraction.trace.refinement.strategy CAMEL_SMT_AM -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-invgen/large_const.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-79ed534 [2020-07-20 01:50:48,633 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 01:50:48,635 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 01:50:48,647 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 01:50:48,648 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 01:50:48,648 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 01:50:48,650 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 01:50:48,652 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 01:50:48,653 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 01:50:48,654 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 01:50:48,655 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 01:50:48,656 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 01:50:48,656 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 01:50:48,657 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 01:50:48,658 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 01:50:48,660 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 01:50:48,660 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 01:50:48,661 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 01:50:48,663 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 01:50:48,664 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 01:50:48,666 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 01:50:48,667 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 01:50:48,670 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 01:50:48,671 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 01:50:48,677 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-20 01:50:48,677 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-20 01:50:48,677 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-20 01:50:48,678 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-20 01:50:48,679 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-20 01:50:48,680 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-20 01:50:48,680 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-20 01:50:48,681 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-20 01:50:48,683 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-20 01:50:48,684 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-20 01:50:48,686 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-20 01:50:48,687 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-20 01:50:48,690 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-20 01:50:48,690 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-20 01:50:48,690 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 01:50:48,691 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 01:50:48,692 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 01:50:48,694 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 01:50:48,718 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 01:50:48,718 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 01:50:48,721 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 01:50:48,721 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 01:50:48,721 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 01:50:48,722 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 01:50:48,722 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 01:50:48,722 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 01:50:48,722 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 01:50:48,723 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 01:50:48,723 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 01:50:48,724 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 01:50:48,724 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 01:50:48,724 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 01:50:48,724 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 01:50:48,725 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 01:50:48,725 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 01:50:48,725 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 01:50:48,725 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 01:50:48,725 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 01:50:48,726 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 01:50:48,726 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 01:50:48,726 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 01:50:48,726 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 01:50:48,726 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 01:50:48,727 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 01:50:48,727 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 01:50:48,727 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 01:50:48,727 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 01:50:48,727 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> CAMEL_SMT_AM [2020-07-20 01:50:49,006 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 01:50:49,024 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 01:50:49,028 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 01:50:49,031 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 01:50:49,031 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 01:50:49,032 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/large_const.i [2020-07-20 01:50:49,103 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa2c75564/acc744ed65b843929a2ead61340d895d/FLAG8ab9fca0a [2020-07-20 01:50:49,556 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 01:50:49,557 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/large_const.i [2020-07-20 01:50:49,563 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa2c75564/acc744ed65b843929a2ead61340d895d/FLAG8ab9fca0a [2020-07-20 01:50:49,952 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa2c75564/acc744ed65b843929a2ead61340d895d [2020-07-20 01:50:49,961 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 01:50:49,964 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 01:50:49,965 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 01:50:49,965 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 01:50:49,969 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 01:50:49,970 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 01:50:49" (1/1) ... [2020-07-20 01:50:49,972 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cdbd51c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:50:49, skipping insertion in model container [2020-07-20 01:50:49,973 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 01:50:49" (1/1) ... [2020-07-20 01:50:49,980 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 01:50:49,997 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 01:50:50,191 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 01:50:50,197 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 01:50:50,221 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 01:50:50,239 INFO L208 MainTranslator]: Completed translation [2020-07-20 01:50:50,240 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:50:50 WrapperNode [2020-07-20 01:50:50,240 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 01:50:50,241 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 01:50:50,241 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 01:50:50,241 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 01:50:50,256 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:50:50" (1/1) ... [2020-07-20 01:50:50,256 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:50:50" (1/1) ... [2020-07-20 01:50:50,265 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:50:50" (1/1) ... [2020-07-20 01:50:50,265 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:50:50" (1/1) ... [2020-07-20 01:50:50,420 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:50:50" (1/1) ... [2020-07-20 01:50:50,428 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:50:50" (1/1) ... [2020-07-20 01:50:50,439 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:50:50" (1/1) ... [2020-07-20 01:50:50,442 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 01:50:50,442 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 01:50:50,442 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 01:50:50,443 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 01:50:50,443 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:50:50" (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 01:50:50,519 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 01:50:50,519 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 01:50:50,519 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-20 01:50:50,519 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-20 01:50:50,520 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 01:50:50,520 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 01:50:50,520 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-20 01:50:50,521 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-20 01:50:50,521 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-20 01:50:50,521 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 01:50:50,521 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 01:50:50,521 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 01:50:50,521 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 01:50:50,836 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 01:50:50,836 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-07-20 01:50:50,840 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 01:50:50 BoogieIcfgContainer [2020-07-20 01:50:50,840 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 01:50:50,841 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 01:50:50,841 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 01:50:50,844 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 01:50:50,845 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 01:50:49" (1/3) ... [2020-07-20 01:50:50,845 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@597b1cc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 01:50:50, skipping insertion in model container [2020-07-20 01:50:50,846 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:50:50" (2/3) ... [2020-07-20 01:50:50,846 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@597b1cc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 01:50:50, skipping insertion in model container [2020-07-20 01:50:50,846 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 01:50:50" (3/3) ... [2020-07-20 01:50:50,848 INFO L109 eAbstractionObserver]: Analyzing ICFG large_const.i [2020-07-20 01:50:50,858 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-20 01:50:50,865 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 01:50:50,879 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 01:50:50,903 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 01:50:50,903 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 01:50:50,903 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-20 01:50:50,903 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 01:50:50,904 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 01:50:50,904 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 01:50:50,904 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 01:50:50,904 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 01:50:50,923 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2020-07-20 01:50:50,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-07-20 01:50:50,928 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:50:50,929 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:50:50,929 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:50:50,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:50:50,935 INFO L82 PathProgramCache]: Analyzing trace with hash -1992019723, now seen corresponding path program 1 times [2020-07-20 01:50:50,941 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:50:50,942 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308550691] [2020-07-20 01:50:50,942 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6dc08d97 [2020-07-20 01:50:51,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:50:51,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:50:51,123 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 01:50:51,124 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308550691] [2020-07-20 01:50:51,125 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 01:50:51,125 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 01:50:51,126 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260443411] [2020-07-20 01:50:51,131 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 01:50:51,131 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:50:51,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 01:50:51,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 01:50:51,147 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 5 states. [2020-07-20 01:50:51,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:50:51,271 INFO L93 Difference]: Finished difference Result 48 states and 63 transitions. [2020-07-20 01:50:51,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 01:50:51,273 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-07-20 01:50:51,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:50:51,282 INFO L225 Difference]: With dead ends: 48 [2020-07-20 01:50:51,282 INFO L226 Difference]: Without dead ends: 21 [2020-07-20 01:50:51,286 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-07-20 01:50:51,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-07-20 01:50:51,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-07-20 01:50:51,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-07-20 01:50:51,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2020-07-20 01:50:51,324 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 13 [2020-07-20 01:50:51,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:50:51,325 INFO L479 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2020-07-20 01:50:51,325 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 01:50:51,325 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2020-07-20 01:50:51,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-07-20 01:50:51,326 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:50:51,326 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:50:51,327 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-20 01:50:51,327 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:50:51,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:50:51,328 INFO L82 PathProgramCache]: Analyzing trace with hash 2018685173, now seen corresponding path program 1 times [2020-07-20 01:50:51,328 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:50:51,328 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705921143] [2020-07-20 01:50:51,329 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6dc08d97 [2020-07-20 01:50:51,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:50:51,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:50:51,450 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 01:50:51,450 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705921143] [2020-07-20 01:50:51,451 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1710672876] [2020-07-20 01:50:51,451 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@715e85f3 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:50:51,520 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@715e85f3 issued 4 check-sat command(s) [2020-07-20 01:50:51,520 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 01:50:51,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-20 01:50:51,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 01:50:51,581 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 01:50:51,613 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 01:50:51,614 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 01:50:51,615 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2020-07-20 01:50:51,616 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259944655] [2020-07-20 01:50:51,617 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-20 01:50:51,618 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:50:51,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-20 01:50:51,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-07-20 01:50:51,619 INFO L87 Difference]: Start difference. First operand 21 states and 24 transitions. Second operand 10 states. [2020-07-20 01:50:51,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:50:51,747 INFO L93 Difference]: Finished difference Result 41 states and 50 transitions. [2020-07-20 01:50:51,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-20 01:50:51,748 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 16 [2020-07-20 01:50:51,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:50:51,751 INFO L225 Difference]: With dead ends: 41 [2020-07-20 01:50:51,752 INFO L226 Difference]: Without dead ends: 39 [2020-07-20 01:50:51,753 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-07-20 01:50:51,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-07-20 01:50:51,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 31. [2020-07-20 01:50:51,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-07-20 01:50:51,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2020-07-20 01:50:51,767 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 16 [2020-07-20 01:50:51,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:50:51,768 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2020-07-20 01:50:51,768 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-20 01:50:51,768 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2020-07-20 01:50:51,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-07-20 01:50:51,769 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:50:51,770 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:50:51,984 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-07-20 01:50:51,985 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:50:51,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:50:51,986 INFO L82 PathProgramCache]: Analyzing trace with hash 23130030, now seen corresponding path program 1 times [2020-07-20 01:50:51,987 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:50:51,988 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721439292] [2020-07-20 01:50:51,988 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6dc08d97 [2020-07-20 01:50:52,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:50:52,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:50:52,092 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 01:50:52,093 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721439292] [2020-07-20 01:50:52,093 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1994482270] [2020-07-20 01:50:52,094 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@62749974 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:50:52,134 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@62749974 issued 4 check-sat command(s) [2020-07-20 01:50:52,135 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 01:50:52,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-20 01:50:52,138 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 01:50:52,182 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 01:50:52,210 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 01:50:52,211 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 01:50:52,211 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2020-07-20 01:50:52,212 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765671858] [2020-07-20 01:50:52,212 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-20 01:50:52,213 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:50:52,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-20 01:50:52,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-07-20 01:50:52,213 INFO L87 Difference]: Start difference. First operand 31 states and 36 transitions. Second operand 10 states. [2020-07-20 01:50:52,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:50:52,329 INFO L93 Difference]: Finished difference Result 51 states and 62 transitions. [2020-07-20 01:50:52,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-20 01:50:52,329 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2020-07-20 01:50:52,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:50:52,333 INFO L225 Difference]: With dead ends: 51 [2020-07-20 01:50:52,333 INFO L226 Difference]: Without dead ends: 49 [2020-07-20 01:50:52,334 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-07-20 01:50:52,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-07-20 01:50:52,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 37. [2020-07-20 01:50:52,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-07-20 01:50:52,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 46 transitions. [2020-07-20 01:50:52,345 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 46 transitions. Word has length 17 [2020-07-20 01:50:52,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:50:52,351 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 46 transitions. [2020-07-20 01:50:52,351 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-20 01:50:52,351 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 46 transitions. [2020-07-20 01:50:52,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-07-20 01:50:52,352 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:50:52,352 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:50:52,553 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:50:52,554 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:50:52,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:50:52,555 INFO L82 PathProgramCache]: Analyzing trace with hash -786216596, now seen corresponding path program 1 times [2020-07-20 01:50:52,555 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:50:52,556 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776562065] [2020-07-20 01:50:52,556 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6dc08d97 [2020-07-20 01:50:52,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:50:52,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:50:52,627 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 01:50:52,627 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776562065] [2020-07-20 01:50:52,628 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [176874714] [2020-07-20 01:50:52,628 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@204a1452 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:50:52,668 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@204a1452 issued 4 check-sat command(s) [2020-07-20 01:50:52,669 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 01:50:52,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-20 01:50:52,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 01:50:52,693 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 01:50:52,716 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 01:50:52,717 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 01:50:52,717 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2020-07-20 01:50:52,718 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320028190] [2020-07-20 01:50:52,718 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-20 01:50:52,718 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:50:52,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-20 01:50:52,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-07-20 01:50:52,719 INFO L87 Difference]: Start difference. First operand 37 states and 46 transitions. Second operand 10 states. [2020-07-20 01:50:52,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:50:52,834 INFO L93 Difference]: Finished difference Result 55 states and 69 transitions. [2020-07-20 01:50:52,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-20 01:50:52,835 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2020-07-20 01:50:52,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:50:52,836 INFO L225 Difference]: With dead ends: 55 [2020-07-20 01:50:52,836 INFO L226 Difference]: Without dead ends: 53 [2020-07-20 01:50:52,838 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-07-20 01:50:52,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-07-20 01:50:52,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 42. [2020-07-20 01:50:52,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-07-20 01:50:52,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 55 transitions. [2020-07-20 01:50:52,867 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 55 transitions. Word has length 17 [2020-07-20 01:50:52,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:50:52,867 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 55 transitions. [2020-07-20 01:50:52,870 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-20 01:50:52,870 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 55 transitions. [2020-07-20 01:50:52,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-07-20 01:50:52,873 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:50:52,874 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:50:53,088 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:50:53,089 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:50:53,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:50:53,090 INFO L82 PathProgramCache]: Analyzing trace with hash -986746962, now seen corresponding path program 1 times [2020-07-20 01:50:53,090 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:50:53,090 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408051798] [2020-07-20 01:50:53,090 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6dc08d97 [2020-07-20 01:50:53,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:50:53,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:50:53,142 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 01:50:53,143 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408051798] [2020-07-20 01:50:53,143 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1813010364] [2020-07-20 01:50:53,148 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@30ddb85c No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:50:53,193 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@30ddb85c issued 2 check-sat command(s) [2020-07-20 01:50:53,194 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 01:50:53,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 01:50:53,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 01:50:53,214 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 01:50:53,215 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-07-20 01:50:53,215 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2020-07-20 01:50:53,216 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446288114] [2020-07-20 01:50:53,216 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 01:50:53,217 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:50:53,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 01:50:53,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-07-20 01:50:53,220 INFO L87 Difference]: Start difference. First operand 42 states and 55 transitions. Second operand 5 states. [2020-07-20 01:50:53,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:50:53,245 INFO L93 Difference]: Finished difference Result 61 states and 77 transitions. [2020-07-20 01:50:53,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 01:50:53,246 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-07-20 01:50:53,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:50:53,247 INFO L225 Difference]: With dead ends: 61 [2020-07-20 01:50:53,247 INFO L226 Difference]: Without dead ends: 29 [2020-07-20 01:50:53,248 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-07-20 01:50:53,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-07-20 01:50:53,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2020-07-20 01:50:53,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-07-20 01:50:53,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2020-07-20 01:50:53,261 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 20 [2020-07-20 01:50:53,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:50:53,261 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2020-07-20 01:50:53,261 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 01:50:53,262 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2020-07-20 01:50:53,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-07-20 01:50:53,262 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:50:53,263 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:50:53,476 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:50:53,477 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:50:53,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:50:53,478 INFO L82 PathProgramCache]: Analyzing trace with hash 1470890089, now seen corresponding path program 1 times [2020-07-20 01:50:53,478 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:50:53,479 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443970775] [2020-07-20 01:50:53,479 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6dc08d97 [2020-07-20 01:50:53,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:50:53,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:50:53,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:50:53,555 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 01:50:53,556 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443970775] [2020-07-20 01:50:53,556 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1048316880] [2020-07-20 01:50:53,556 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@2ef68e1f No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:50:53,598 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@2ef68e1f issued 4 check-sat command(s) [2020-07-20 01:50:53,598 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 01:50:53,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 01:50:53,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 01:50:53,651 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 01:50:53,652 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-07-20 01:50:53,652 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2020-07-20 01:50:53,652 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664043780] [2020-07-20 01:50:53,653 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 01:50:53,653 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:50:53,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 01:50:53,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-07-20 01:50:53,654 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand 5 states. [2020-07-20 01:50:53,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:50:53,674 INFO L93 Difference]: Finished difference Result 29 states and 31 transitions. [2020-07-20 01:50:53,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 01:50:53,675 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2020-07-20 01:50:53,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:50:53,676 INFO L225 Difference]: With dead ends: 29 [2020-07-20 01:50:53,676 INFO L226 Difference]: Without dead ends: 0 [2020-07-20 01:50:53,677 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-07-20 01:50:53,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-20 01:50:53,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-20 01:50:53,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-20 01:50:53,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-20 01:50:53,678 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 23 [2020-07-20 01:50:53,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:50:53,678 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-20 01:50:53,678 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 01:50:53,678 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-20 01:50:53,679 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-20 01:50:53,886 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-07-20 01:50:53,890 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-20 01:50:54,195 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-07-20 01:50:54,195 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-20 01:50:54,195 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-20 01:50:54,195 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-20 01:50:54,196 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-20 01:50:54,196 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-20 01:50:54,196 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-07-20 01:50:54,197 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-07-20 01:50:54,197 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 5) no Hoare annotation was computed. [2020-07-20 01:50:54,197 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-07-20 01:50:54,198 INFO L264 CegarLoopResult]: At program point L35-2(lines 35 39) the Hoare annotation is: (let ((.cse0 (<= 10000 main_~c3~0)) (.cse1 (<= 4000 main_~c1~0)) (.cse2 (<= 2000 main_~c2~0)) (.cse3 (< main_~n~0 2)) (.cse4 (<= 1 main_~i~0))) (or (and .cse0 (<= 2000 main_~k~0) .cse1 .cse2 (<= 0 main_~j~0) .cse3 .cse4) (and (<= main_~i~0 0) (<= main_~n~0 0) (<= main_~n~0 main_~j~0)) (and .cse0 (<= 1 main_~j~0) .cse1 .cse2 .cse3 .cse4))) [2020-07-20 01:50:54,198 INFO L268 CegarLoopResult]: For program point L35-3(lines 35 39) no Hoare annotation was computed. [2020-07-20 01:50:54,198 INFO L268 CegarLoopResult]: For program point L29(lines 29 32) no Hoare annotation was computed. [2020-07-20 01:50:54,198 INFO L268 CegarLoopResult]: For program point L27(lines 27 32) no Hoare annotation was computed. [2020-07-20 01:50:54,198 INFO L264 CegarLoopResult]: At program point L29-2(lines 23 33) the Hoare annotation is: (let ((.cse0 (<= 10000 main_~c3~0)) (.cse1 (<= 4000 main_~c1~0)) (.cse2 (<= 2000 main_~c2~0))) (or (and (<= main_~i~0 0) .cse0 (<= 0 main_~i~0) .cse1 .cse2 (<= 0 main_~k~0)) (and .cse0 (<= 2000 main_~k~0) .cse1 .cse2 (< main_~n~0 2) (<= 1 main_~i~0)))) [2020-07-20 01:50:54,199 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 13 41) no Hoare annotation was computed. [2020-07-20 01:50:54,199 INFO L268 CegarLoopResult]: For program point L23-2(lines 23 33) no Hoare annotation was computed. [2020-07-20 01:50:54,199 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 13 41) no Hoare annotation was computed. [2020-07-20 01:50:54,200 INFO L264 CegarLoopResult]: At program point L36(line 36) the Hoare annotation is: (and (<= 10000 main_~c3~0) (<= 2000 main_~k~0) (<= 4000 main_~c1~0) (<= 2000 main_~c2~0) (<= 0 main_~j~0) (< main_~n~0 2) (<= 1 main_~i~0)) [2020-07-20 01:50:54,200 INFO L268 CegarLoopResult]: For program point L36-1(line 36) no Hoare annotation was computed. [2020-07-20 01:50:54,200 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 41) the Hoare annotation is: true [2020-07-20 01:50:54,200 INFO L268 CegarLoopResult]: For program point L26(line 26) no Hoare annotation was computed. [2020-07-20 01:50:54,200 INFO L268 CegarLoopResult]: For program point L20(line 20) no Hoare annotation was computed. [2020-07-20 01:50:54,200 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-07-20 01:50:54,201 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 6 11) no Hoare annotation was computed. [2020-07-20 01:50:54,201 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-07-20 01:50:54,201 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-07-20 01:50:54,201 INFO L268 CegarLoopResult]: For program point L7-2(lines 6 11) no Hoare annotation was computed. [2020-07-20 01:50:54,201 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-07-20 01:50:54,221 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 01:50:54 BoogieIcfgContainer [2020-07-20 01:50:54,221 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 01:50:54,224 INFO L168 Benchmark]: Toolchain (without parser) took 4260.37 ms. Allocated memory was 136.3 MB in the beginning and 248.5 MB in the end (delta: 112.2 MB). Free memory was 101.0 MB in the beginning and 210.8 MB in the end (delta: -109.7 MB). Peak memory consumption was 119.2 MB. Max. memory is 7.1 GB. [2020-07-20 01:50:54,225 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 136.3 MB. Free memory is still 119.0 MB. There was no memory consumed. Max. memory is 7.1 GB. [2020-07-20 01:50:54,226 INFO L168 Benchmark]: CACSL2BoogieTranslator took 275.68 ms. Allocated memory is still 136.3 MB. Free memory was 100.6 MB in the beginning and 90.9 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. [2020-07-20 01:50:54,227 INFO L168 Benchmark]: Boogie Preprocessor took 200.80 ms. Allocated memory was 136.3 MB in the beginning and 205.0 MB in the end (delta: 68.7 MB). Free memory was 90.9 MB in the beginning and 183.4 MB in the end (delta: -92.4 MB). Peak memory consumption was 14.4 MB. Max. memory is 7.1 GB. [2020-07-20 01:50:54,228 INFO L168 Benchmark]: RCFGBuilder took 397.83 ms. Allocated memory is still 205.0 MB. Free memory was 183.4 MB in the beginning and 168.1 MB in the end (delta: 15.2 MB). Peak memory consumption was 15.2 MB. Max. memory is 7.1 GB. [2020-07-20 01:50:54,229 INFO L168 Benchmark]: TraceAbstraction took 3380.35 ms. Allocated memory was 205.0 MB in the beginning and 248.5 MB in the end (delta: 43.5 MB). Free memory was 167.1 MB in the beginning and 210.8 MB in the end (delta: -43.6 MB). Peak memory consumption was 116.6 MB. Max. memory is 7.1 GB. [2020-07-20 01:50:54,234 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 136.3 MB. Free memory is still 119.0 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 275.68 ms. Allocated memory is still 136.3 MB. Free memory was 100.6 MB in the beginning and 90.9 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 200.80 ms. Allocated memory was 136.3 MB in the beginning and 205.0 MB in the end (delta: 68.7 MB). Free memory was 90.9 MB in the beginning and 183.4 MB in the end (delta: -92.4 MB). Peak memory consumption was 14.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 397.83 ms. Allocated memory is still 205.0 MB. Free memory was 183.4 MB in the beginning and 168.1 MB in the end (delta: 15.2 MB). Peak memory consumption was 15.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3380.35 ms. Allocated memory was 205.0 MB in the beginning and 248.5 MB in the end (delta: 43.5 MB). Free memory was 167.1 MB in the beginning and 210.8 MB in the end (delta: -43.6 MB). Peak memory consumption was 116.6 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 - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: (((((i <= 0 && 10000 <= c3) && 0 <= i) && 4000 <= c1) && 2000 <= c2) && 0 <= k) || (((((10000 <= c3 && 2000 <= k) && 4000 <= c1) && 2000 <= c2) && n < 2) && 1 <= i) - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: (((((((10000 <= c3 && 2000 <= k) && 4000 <= c1) && 2000 <= c2) && 0 <= j) && n < 2) && 1 <= i) || ((i <= 0 && n <= 0) && n <= j)) || (((((10000 <= c3 && 1 <= j) && 4000 <= c1) && 2000 <= c2) && n < 2) && 1 <= i) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.9s, OverallIterations: 6, TraceHistogramMax: 2, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 146 SDtfs, 142 SDslu, 465 SDs, 0 SdLazy, 257 SolverSat, 50 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 149 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=42occurred in iteration=4, 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, 6 MinimizatonAttempts, 33 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 12 PreInvPairs, 18 NumberOfFragments, 118 HoareAnnotationTreeSize, 12 FomulaSimplifications, 152 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 88 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 199 NumberOfCodeBlocks, 189 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 188 ConstructedInterpolants, 0 QuantifiedInterpolants, 8384 SizeOfPredicates, 12 NumberOfNonLiveVariables, 329 ConjunctsInSsa, 26 ConjunctsInUnsatCore, 11 InterpolantComputations, 3 PerfectInterpolantSequences, 16/26 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...