/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 DAGSIZE --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-lit/cggmp2005.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-79ed534 [2020-07-20 04:01:41,336 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 04:01:41,339 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 04:01:41,351 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 04:01:41,352 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 04:01:41,353 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 04:01:41,355 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 04:01:41,357 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 04:01:41,358 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 04:01:41,359 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 04:01:41,360 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 04:01:41,366 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 04:01:41,367 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 04:01:41,370 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 04:01:41,372 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 04:01:41,373 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 04:01:41,375 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 04:01:41,379 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 04:01:41,381 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 04:01:41,382 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 04:01:41,385 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 04:01:41,389 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 04:01:41,390 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 04:01:41,391 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 04:01:41,397 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 04:01:41,411 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 04:01:41,412 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 04:01:41,414 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 04:01:41,414 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 04:01:41,452 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 04:01:41,453 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 04:01:41,456 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 04:01:41,456 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 04:01:41,456 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 04:01:41,456 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 04:01:41,457 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 04:01:41,457 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 04:01:41,457 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 04:01:41,457 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 04:01:41,457 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 04:01:41,457 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 04:01:41,458 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 04:01:41,458 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 04:01:41,458 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 04:01:41,459 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 04:01:41,460 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 04:01:41,460 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 04:01:41,460 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 04:01:41,460 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 04:01:41,461 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 04:01:41,461 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 04:01:41,461 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 04:01:41,461 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 04:01:41,461 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 04:01:41,462 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 04:01:41,462 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 04:01:41,462 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 04:01:41,462 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 04:01:41,462 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> DAGSIZE 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 04:01:41,751 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 04:01:41,765 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 04:01:41,769 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 04:01:41,770 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 04:01:41,771 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 04:01:41,771 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/cggmp2005.i [2020-07-20 04:01:41,836 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b1ebebe11/3d3a75185e924ee88f8324e54e810140/FLAG7905d0f92 [2020-07-20 04:01:42,266 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 04:01:42,267 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/cggmp2005.i [2020-07-20 04:01:42,274 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b1ebebe11/3d3a75185e924ee88f8324e54e810140/FLAG7905d0f92 [2020-07-20 04:01:42,648 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b1ebebe11/3d3a75185e924ee88f8324e54e810140 [2020-07-20 04:01:42,661 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 04:01:42,665 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 04:01:42,670 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 04:01:42,671 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 04:01:42,674 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 04:01:42,675 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 04:01:42" (1/1) ... [2020-07-20 04:01:42,678 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3239e702 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:01:42, skipping insertion in model container [2020-07-20 04:01:42,679 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 04:01:42" (1/1) ... [2020-07-20 04:01:42,688 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 04:01:42,711 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 04:01:42,884 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 04:01:42,889 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 04:01:42,906 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 04:01:42,922 INFO L208 MainTranslator]: Completed translation [2020-07-20 04:01:42,922 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:01:42 WrapperNode [2020-07-20 04:01:42,923 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 04:01:42,924 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 04:01:42,924 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 04:01:42,924 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 04:01:42,940 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:01:42" (1/1) ... [2020-07-20 04:01:42,940 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:01:42" (1/1) ... [2020-07-20 04:01:42,948 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:01:42" (1/1) ... [2020-07-20 04:01:42,948 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:01:42" (1/1) ... [2020-07-20 04:01:42,953 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:01:42" (1/1) ... [2020-07-20 04:01:42,962 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:01:42" (1/1) ... [2020-07-20 04:01:42,962 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:01:42" (1/1) ... [2020-07-20 04:01:43,042 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 04:01:43,045 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 04:01:43,046 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 04:01:43,046 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 04:01:43,047 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:01:42" (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 04:01:43,111 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 04:01:43,112 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 04:01:43,112 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-20 04:01:43,112 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-20 04:01:43,112 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 04:01:43,112 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 04:01:43,112 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-20 04:01:43,112 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-20 04:01:43,113 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-20 04:01:43,113 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 04:01:43,113 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 04:01:43,113 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 04:01:43,113 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 04:01:43,288 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 04:01:43,288 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-20 04:01:43,293 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 04:01:43 BoogieIcfgContainer [2020-07-20 04:01:43,293 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 04:01:43,294 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 04:01:43,294 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 04:01:43,298 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 04:01:43,298 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 04:01:42" (1/3) ... [2020-07-20 04:01:43,299 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d82dcaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 04:01:43, skipping insertion in model container [2020-07-20 04:01:43,299 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:01:42" (2/3) ... [2020-07-20 04:01:43,299 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d82dcaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 04:01:43, skipping insertion in model container [2020-07-20 04:01:43,300 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 04:01:43" (3/3) ... [2020-07-20 04:01:43,301 INFO L109 eAbstractionObserver]: Analyzing ICFG cggmp2005.i [2020-07-20 04:01:43,314 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-20 04:01:43,323 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 04:01:43,340 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 04:01:43,375 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 04:01:43,375 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 04:01:43,376 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-20 04:01:43,376 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 04:01:43,376 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 04:01:43,377 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 04:01:43,377 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 04:01:43,377 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 04:01:43,403 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2020-07-20 04:01:43,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-07-20 04:01:43,419 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 04:01:43,421 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 04:01:43,421 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 04:01:43,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 04:01:43,431 INFO L82 PathProgramCache]: Analyzing trace with hash -1782755915, now seen corresponding path program 1 times [2020-07-20 04:01:43,459 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 04:01:43,463 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201389645] [2020-07-20 04:01:43,463 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@c6b751e [2020-07-20 04:01:43,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:43,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:43,636 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 04:01:43,636 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201389645] [2020-07-20 04:01:43,637 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 04:01:43,638 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 04:01:43,639 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286609861] [2020-07-20 04:01:43,643 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 04:01:43,644 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 04:01:43,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 04:01:43,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 04:01:43,658 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 3 states. [2020-07-20 04:01:43,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 04:01:43,702 INFO L93 Difference]: Finished difference Result 31 states and 36 transitions. [2020-07-20 04:01:43,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 04:01:43,704 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-07-20 04:01:43,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 04:01:43,712 INFO L225 Difference]: With dead ends: 31 [2020-07-20 04:01:43,712 INFO L226 Difference]: Without dead ends: 12 [2020-07-20 04:01:43,715 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 04:01:43,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2020-07-20 04:01:43,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2020-07-20 04:01:43,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-07-20 04:01:43,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2020-07-20 04:01:43,756 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2020-07-20 04:01:43,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 04:01:43,757 INFO L479 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2020-07-20 04:01:43,757 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 04:01:43,757 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2020-07-20 04:01:43,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-07-20 04:01:43,758 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 04:01:43,758 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 04:01:43,759 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-20 04:01:43,759 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 04:01:43,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 04:01:43,760 INFO L82 PathProgramCache]: Analyzing trace with hash 604679234, now seen corresponding path program 1 times [2020-07-20 04:01:43,760 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 04:01:43,760 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995351782] [2020-07-20 04:01:43,761 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@c6b751e [2020-07-20 04:01:43,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:43,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:43,813 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 04:01:43,813 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995351782] [2020-07-20 04:01:43,814 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1246518679] [2020-07-20 04:01:43,814 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@39d6dc6d No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 04:01:43,856 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@39d6dc6d issued 2 check-sat command(s) [2020-07-20 04:01:43,857 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 04:01:43,859 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-20 04:01:43,864 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 04:01:43,939 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 04:01:43,939 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 04:01:43,939 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2020-07-20 04:01:43,940 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300594833] [2020-07-20 04:01:43,941 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 04:01:43,942 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 04:01:43,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 04:01:43,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-07-20 04:01:43,943 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 6 states. [2020-07-20 04:01:43,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 04:01:43,974 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2020-07-20 04:01:43,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 04:01:43,975 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-07-20 04:01:43,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 04:01:43,976 INFO L225 Difference]: With dead ends: 18 [2020-07-20 04:01:43,976 INFO L226 Difference]: Without dead ends: 13 [2020-07-20 04:01:43,977 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-07-20 04:01:43,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2020-07-20 04:01:43,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2020-07-20 04:01:43,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-07-20 04:01:43,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2020-07-20 04:01:43,982 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2020-07-20 04:01:43,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 04:01:43,983 INFO L479 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2020-07-20 04:01:43,983 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 04:01:43,983 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2020-07-20 04:01:43,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-07-20 04:01:43,984 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 04:01:43,984 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 04:01:44,185 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-07-20 04:01:44,186 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 04:01:44,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 04:01:44,187 INFO L82 PathProgramCache]: Analyzing trace with hash 1600724821, now seen corresponding path program 2 times [2020-07-20 04:01:44,188 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 04:01:44,189 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664046680] [2020-07-20 04:01:44,189 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@c6b751e [2020-07-20 04:01:44,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:44,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:44,256 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 04:01:44,257 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664046680] [2020-07-20 04:01:44,257 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [871454860] [2020-07-20 04:01:44,257 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@73da60c7 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 04:01:44,300 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@73da60c7 issued 2 check-sat command(s) [2020-07-20 04:01:44,300 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 04:01:44,301 INFO L263 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-20 04:01:44,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 04:01:44,367 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 04:01:44,367 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 04:01:44,367 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2020-07-20 04:01:44,368 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222906751] [2020-07-20 04:01:44,368 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-20 04:01:44,369 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 04:01:44,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-20 04:01:44,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2020-07-20 04:01:44,370 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 8 states. [2020-07-20 04:01:44,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 04:01:44,388 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2020-07-20 04:01:44,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 04:01:44,389 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 12 [2020-07-20 04:01:44,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 04:01:44,390 INFO L225 Difference]: With dead ends: 19 [2020-07-20 04:01:44,390 INFO L226 Difference]: Without dead ends: 14 [2020-07-20 04:01:44,391 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2020-07-20 04:01:44,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-07-20 04:01:44,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2020-07-20 04:01:44,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-07-20 04:01:44,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2020-07-20 04:01:44,396 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2020-07-20 04:01:44,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 04:01:44,396 INFO L479 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2020-07-20 04:01:44,396 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-20 04:01:44,397 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2020-07-20 04:01:44,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-07-20 04:01:44,397 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 04:01:44,398 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 04:01:44,602 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 04:01:44,603 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 04:01:44,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 04:01:44,604 INFO L82 PathProgramCache]: Analyzing trace with hash -1881600350, now seen corresponding path program 3 times [2020-07-20 04:01:44,604 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 04:01:44,605 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195321622] [2020-07-20 04:01:44,606 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@c6b751e [2020-07-20 04:01:44,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:44,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:44,694 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 04:01:44,695 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195321622] [2020-07-20 04:01:44,695 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [555259762] [2020-07-20 04:01:44,695 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5e14c2f No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2020-07-20 04:01:44,735 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5e14c2f issued 2 check-sat command(s) [2020-07-20 04:01:44,736 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 04:01:44,737 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 9 conjunts are in the unsatisfiable core Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 04:01:44,738 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 04:01:44,838 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 04:01:44,838 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 04:01:44,839 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2020-07-20 04:01:44,839 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102065583] [2020-07-20 04:01:44,840 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-20 04:01:44,840 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 04:01:44,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-20 04:01:44,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2020-07-20 04:01:44,841 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 10 states. [2020-07-20 04:01:44,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 04:01:44,877 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2020-07-20 04:01:44,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 04:01:44,878 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 13 [2020-07-20 04:01:44,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 04:01:44,879 INFO L225 Difference]: With dead ends: 20 [2020-07-20 04:01:44,879 INFO L226 Difference]: Without dead ends: 15 [2020-07-20 04:01:44,880 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2020-07-20 04:01:44,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-07-20 04:01:44,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-07-20 04:01:44,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-07-20 04:01:44,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2020-07-20 04:01:44,886 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 13 [2020-07-20 04:01:44,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 04:01:44,886 INFO L479 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2020-07-20 04:01:44,886 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-20 04:01:44,886 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2020-07-20 04:01:44,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-07-20 04:01:44,887 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 04:01:44,887 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 04:01:45,088 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 04:01:45,089 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 04:01:45,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 04:01:45,089 INFO L82 PathProgramCache]: Analyzing trace with hash 1835469045, now seen corresponding path program 4 times [2020-07-20 04:01:45,089 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 04:01:45,090 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758877975] [2020-07-20 04:01:45,090 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@c6b751e [2020-07-20 04:01:45,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:45,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:45,249 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 04:01:45,250 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758877975] [2020-07-20 04:01:45,250 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1887302244] [2020-07-20 04:01:45,250 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@49126621 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 04:01:45,292 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@49126621 issued 4 check-sat command(s) [2020-07-20 04:01:45,292 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 04:01:45,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 14 conjunts are in the unsatisfiable core [2020-07-20 04:01:45,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 04:01:45,435 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-20 04:01:45,499 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 04:01:45,499 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 04:01:45,499 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2020-07-20 04:01:45,500 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275753266] [2020-07-20 04:01:45,500 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-07-20 04:01:45,501 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 04:01:45,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-07-20 04:01:45,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2020-07-20 04:01:45,502 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 15 states. [2020-07-20 04:01:45,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 04:01:45,636 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2020-07-20 04:01:45,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-20 04:01:45,636 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 14 [2020-07-20 04:01:45,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 04:01:45,637 INFO L225 Difference]: With dead ends: 19 [2020-07-20 04:01:45,637 INFO L226 Difference]: Without dead ends: 0 [2020-07-20 04:01:45,638 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2020-07-20 04:01:45,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-20 04:01:45,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-20 04:01:45,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-20 04:01:45,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-20 04:01:45,639 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2020-07-20 04:01:45,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 04:01:45,640 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-20 04:01:45,640 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-07-20 04:01:45,640 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-20 04:01:45,640 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-20 04:01:45,848 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 04:01:45,851 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-20 04:01:45,984 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-07-20 04:01:45,985 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-20 04:01:45,985 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-20 04:01:45,985 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-20 04:01:45,985 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-20 04:01:45,985 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-20 04:01:45,985 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-07-20 04:01:45,986 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-07-20 04:01:45,986 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 5) no Hoare annotation was computed. [2020-07-20 04:01:45,986 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-07-20 04:01:45,986 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 23) the Hoare annotation is: true [2020-07-20 04:01:45,986 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 13 23) no Hoare annotation was computed. [2020-07-20 04:01:45,986 INFO L268 CegarLoopResult]: For program point L21(line 21) no Hoare annotation was computed. [2020-07-20 04:01:45,987 INFO L264 CegarLoopResult]: At program point L17-2(lines 17 20) the Hoare annotation is: (let ((.cse0 (<= 7 main_~i~0))) (or (and .cse0 (<= main_~j~0 6) (< 5 main_~j~0)) (and (<= main_~j~0 10) (<= (+ main_~i~0 9) main_~j~0) (<= 1 main_~i~0)) (and (<= 9 main_~j~0) (<= main_~i~0 3) (<= 3 main_~i~0) (<= main_~j~0 9)) (and (<= main_~j~0 8) (<= 5 main_~i~0) (<= 8 main_~j~0) (<= main_~i~0 5)) (and (<= main_~j~0 7) (<= main_~i~0 7) .cse0 (<= 7 main_~j~0)))) [2020-07-20 04:01:45,987 INFO L264 CegarLoopResult]: At program point L17-3(lines 17 20) the Hoare annotation is: (and (<= 7 main_~i~0) (<= main_~j~0 6) (< 5 main_~j~0)) [2020-07-20 04:01:45,987 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 13 23) no Hoare annotation was computed. [2020-07-20 04:01:45,987 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-07-20 04:01:45,987 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 6 11) no Hoare annotation was computed. [2020-07-20 04:01:45,988 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-07-20 04:01:45,988 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-07-20 04:01:45,988 INFO L268 CegarLoopResult]: For program point L7-2(lines 6 11) no Hoare annotation was computed. [2020-07-20 04:01:45,988 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-07-20 04:01:46,008 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 04:01:46 BoogieIcfgContainer [2020-07-20 04:01:46,009 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 04:01:46,011 INFO L168 Benchmark]: Toolchain (without parser) took 3347.37 ms. Allocated memory was 138.9 MB in the beginning and 236.5 MB in the end (delta: 97.5 MB). Free memory was 103.4 MB in the beginning and 144.2 MB in the end (delta: -40.8 MB). Peak memory consumption was 56.7 MB. Max. memory is 7.1 GB. [2020-07-20 04:01:46,012 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 138.9 MB. Free memory is still 121.7 MB. There was no memory consumed. Max. memory is 7.1 GB. [2020-07-20 04:01:46,013 INFO L168 Benchmark]: CACSL2BoogieTranslator took 252.94 ms. Allocated memory is still 138.9 MB. Free memory was 103.0 MB in the beginning and 93.9 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 7.1 GB. [2020-07-20 04:01:46,014 INFO L168 Benchmark]: Boogie Preprocessor took 118.25 ms. Allocated memory was 138.9 MB in the beginning and 203.4 MB in the end (delta: 64.5 MB). Free memory was 93.9 MB in the beginning and 183.3 MB in the end (delta: -89.4 MB). Peak memory consumption was 14.8 MB. Max. memory is 7.1 GB. [2020-07-20 04:01:46,015 INFO L168 Benchmark]: RCFGBuilder took 247.76 ms. Allocated memory is still 203.4 MB. Free memory was 182.3 MB in the beginning and 170.4 MB in the end (delta: 11.9 MB). Peak memory consumption was 11.9 MB. Max. memory is 7.1 GB. [2020-07-20 04:01:46,016 INFO L168 Benchmark]: TraceAbstraction took 2714.39 ms. Allocated memory was 203.4 MB in the beginning and 236.5 MB in the end (delta: 33.0 MB). Free memory was 170.4 MB in the beginning and 144.2 MB in the end (delta: 26.2 MB). Peak memory consumption was 59.2 MB. Max. memory is 7.1 GB. [2020-07-20 04:01:46,021 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 138.9 MB. Free memory is still 121.7 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 252.94 ms. Allocated memory is still 138.9 MB. Free memory was 103.0 MB in the beginning and 93.9 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 118.25 ms. Allocated memory was 138.9 MB in the beginning and 203.4 MB in the end (delta: 64.5 MB). Free memory was 93.9 MB in the beginning and 183.3 MB in the end (delta: -89.4 MB). Peak memory consumption was 14.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 247.76 ms. Allocated memory is still 203.4 MB. Free memory was 182.3 MB in the beginning and 170.4 MB in the end (delta: 11.9 MB). Peak memory consumption was 11.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2714.39 ms. Allocated memory was 203.4 MB in the beginning and 236.5 MB in the end (delta: 33.0 MB). Free memory was 170.4 MB in the beginning and 144.2 MB in the end (delta: 26.2 MB). Peak memory consumption was 59.2 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: 17]: Loop Invariant Derived loop invariant: (((((7 <= i && j <= 6) && 5 < j) || ((j <= 10 && i + 9 <= j) && 1 <= i)) || (((9 <= j && i <= 3) && 3 <= i) && j <= 9)) || (((j <= 8 && 5 <= i) && 8 <= j) && i <= 5)) || (((j <= 7 && i <= 7) && 7 <= i) && 7 <= j) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 22 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.4s, OverallIterations: 5, TraceHistogramMax: 4, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 53 SDtfs, 3 SDslu, 157 SDs, 0 SdLazy, 82 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 89 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 12 PreInvPairs, 18 NumberOfFragments, 77 HoareAnnotationTreeSize, 12 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 6 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 110 NumberOfCodeBlocks, 94 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 101 ConstructedInterpolants, 0 QuantifiedInterpolants, 3237 SizeOfPredicates, 8 NumberOfNonLiveVariables, 118 ConjunctsInSsa, 35 ConjunctsInUnsatCore, 9 InterpolantComputations, 1 PerfectInterpolantSequences, 6/40 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...