/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.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/array-fpi/brs2f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 22:59:33,432 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 22:59:33,434 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 22:59:33,458 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 22:59:33,458 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 22:59:33,459 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 22:59:33,461 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 22:59:33,462 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 22:59:33,464 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 22:59:33,465 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 22:59:33,466 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 22:59:33,467 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 22:59:33,467 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 22:59:33,468 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 22:59:33,469 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 22:59:33,470 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 22:59:33,471 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 22:59:33,471 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 22:59:33,473 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 22:59:33,475 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 22:59:33,476 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 22:59:33,477 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 22:59:33,478 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 22:59:33,479 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 22:59:33,482 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 22:59:33,482 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 22:59:33,482 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 22:59:33,483 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 22:59:33,483 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 22:59:33,484 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-08-22 22:59:33,489 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 22:59:33,490 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 22:59:33,490 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 22:59:33,491 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-08-22 22:59:33,507 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 22:59:33,507 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 22:59:33,508 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 22:59:33,508 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 22:59:33,512 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 22:59:33,512 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 22:59:33,512 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 22:59:33,512 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 22:59:33,513 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 22:59:33,513 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 22:59:33,513 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 22:59:33,513 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 22:59:33,513 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 22:59:33,514 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 22:59:33,514 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 22:59:33,514 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-08-22 22:59:33,514 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 22:59:33,514 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 22:59:33,515 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 22:59:33,516 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 22:59:33,516 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-08-22 22:59:33,517 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 22:59:33,517 INFO L138 SettingsManager]: * Use separate solver for trace checks=false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-08-22 22:59:33,852 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 22:59:33,869 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 22:59:33,875 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 22:59:33,878 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 22:59:33,878 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 22:59:33,879 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/brs2f.c [2020-08-22 22:59:33,960 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d6a86ff2/a631c31e55404b22bb2ca89818bd5d27/FLAG284086fcc [2020-08-22 22:59:34,501 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 22:59:34,502 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/brs2f.c [2020-08-22 22:59:34,509 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d6a86ff2/a631c31e55404b22bb2ca89818bd5d27/FLAG284086fcc [2020-08-22 22:59:34,861 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d6a86ff2/a631c31e55404b22bb2ca89818bd5d27 [2020-08-22 22:59:34,873 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 22:59:34,876 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 22:59:34,880 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 22:59:34,881 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 22:59:34,885 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 22:59:34,886 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 10:59:34" (1/1) ... [2020-08-22 22:59:34,889 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27f688b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:59:34, skipping insertion in model container [2020-08-22 22:59:34,891 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 10:59:34" (1/1) ... [2020-08-22 22:59:34,900 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 22:59:34,923 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 22:59:35,102 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 22:59:35,111 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 22:59:35,133 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 22:59:35,149 INFO L208 MainTranslator]: Completed translation [2020-08-22 22:59:35,149 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:59:35 WrapperNode [2020-08-22 22:59:35,150 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 22:59:35,150 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 22:59:35,151 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 22:59:35,151 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 22:59:35,164 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:59:35" (1/1) ... [2020-08-22 22:59:35,164 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:59:35" (1/1) ... [2020-08-22 22:59:35,249 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:59:35" (1/1) ... [2020-08-22 22:59:35,249 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:59:35" (1/1) ... [2020-08-22 22:59:35,262 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:59:35" (1/1) ... [2020-08-22 22:59:35,267 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:59:35" (1/1) ... [2020-08-22 22:59:35,269 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:59:35" (1/1) ... [2020-08-22 22:59:35,271 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 22:59:35,276 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 22:59:35,276 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 22:59:35,277 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 22:59:35,278 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:59:35" (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 [2020-08-22 22:59:35,339 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 22:59:35,339 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 22:59:35,339 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-22 22:59:35,339 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-22 22:59:35,339 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 22:59:35,339 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 22:59:35,340 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-22 22:59:35,340 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-22 22:59:35,340 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-22 22:59:35,340 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 22:59:35,340 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 22:59:35,340 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 22:59:35,340 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 22:59:35,340 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 22:59:35,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 22:59:35,341 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 22:59:35,341 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 22:59:35,341 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 22:59:35,341 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 22:59:35,655 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 22:59:35,656 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-08-22 22:59:35,660 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 10:59:35 BoogieIcfgContainer [2020-08-22 22:59:35,661 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 22:59:35,667 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 22:59:35,667 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 22:59:35,673 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 22:59:35,673 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 10:59:34" (1/3) ... [2020-08-22 22:59:35,674 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@743851a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 10:59:35, skipping insertion in model container [2020-08-22 22:59:35,674 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:59:35" (2/3) ... [2020-08-22 22:59:35,675 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@743851a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 10:59:35, skipping insertion in model container [2020-08-22 22:59:35,675 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 10:59:35" (3/3) ... [2020-08-22 22:59:35,678 INFO L109 eAbstractionObserver]: Analyzing ICFG brs2f.c [2020-08-22 22:59:35,687 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 22:59:35,695 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 22:59:35,708 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 22:59:35,731 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 22:59:35,731 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 22:59:35,731 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 22:59:35,731 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 22:59:35,731 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 22:59:35,732 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 22:59:35,732 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 22:59:35,732 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 22:59:35,746 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states. [2020-08-22 22:59:35,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-08-22 22:59:35,757 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:59:35,758 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:59:35,758 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:59:35,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:59:35,763 INFO L82 PathProgramCache]: Analyzing trace with hash 221259408, now seen corresponding path program 1 times [2020-08-22 22:59:35,770 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:59:35,771 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [76599886] [2020-08-22 22:59:35,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:59:35,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:59:35,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:59:35,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:59:35,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 22:59:35,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:59:35,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 22:59:35,992 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [76599886] [2020-08-22 22:59:35,994 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 22:59:35,995 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 22:59:35,996 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394657783] [2020-08-22 22:59:36,006 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 22:59:36,006 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:59:36,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 22:59:36,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 22:59:36,026 INFO L87 Difference]: Start difference. First operand 59 states. Second operand 3 states. [2020-08-22 22:59:36,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:59:36,253 INFO L93 Difference]: Finished difference Result 101 states and 116 transitions. [2020-08-22 22:59:36,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 22:59:36,256 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 30 [2020-08-22 22:59:36,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:59:36,267 INFO L225 Difference]: With dead ends: 101 [2020-08-22 22:59:36,267 INFO L226 Difference]: Without dead ends: 47 [2020-08-22 22:59:36,272 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 22:59:36,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-08-22 22:59:36,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-08-22 22:59:36,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-08-22 22:59:36,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 50 transitions. [2020-08-22 22:59:36,324 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 50 transitions. Word has length 30 [2020-08-22 22:59:36,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:59:36,325 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 50 transitions. [2020-08-22 22:59:36,325 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 22:59:36,325 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 50 transitions. [2020-08-22 22:59:36,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-08-22 22:59:36,327 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:59:36,327 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:59:36,328 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 22:59:36,328 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:59:36,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:59:36,329 INFO L82 PathProgramCache]: Analyzing trace with hash -151091841, now seen corresponding path program 1 times [2020-08-22 22:59:36,329 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:59:36,330 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1362354034] [2020-08-22 22:59:36,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:59:36,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:59:36,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:59:36,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:59:36,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 22:59:36,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:59:36,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 22:59:36,469 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1362354034] [2020-08-22 22:59:36,469 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 22:59:36,469 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 22:59:36,470 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411966657] [2020-08-22 22:59:36,472 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 22:59:36,472 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:59:36,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 22:59:36,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-22 22:59:36,473 INFO L87 Difference]: Start difference. First operand 47 states and 50 transitions. Second operand 5 states. [2020-08-22 22:59:36,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:59:36,669 INFO L93 Difference]: Finished difference Result 81 states and 91 transitions. [2020-08-22 22:59:36,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-22 22:59:36,670 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-08-22 22:59:36,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:59:36,672 INFO L225 Difference]: With dead ends: 81 [2020-08-22 22:59:36,673 INFO L226 Difference]: Without dead ends: 56 [2020-08-22 22:59:36,674 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-08-22 22:59:36,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-08-22 22:59:36,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 51. [2020-08-22 22:59:36,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-08-22 22:59:36,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 54 transitions. [2020-08-22 22:59:36,689 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 54 transitions. Word has length 30 [2020-08-22 22:59:36,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:59:36,690 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 54 transitions. [2020-08-22 22:59:36,690 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 22:59:36,690 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 54 transitions. [2020-08-22 22:59:36,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-08-22 22:59:36,692 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:59:36,692 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:59:36,692 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 22:59:36,693 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:59:36,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:59:36,693 INFO L82 PathProgramCache]: Analyzing trace with hash 1707000309, now seen corresponding path program 1 times [2020-08-22 22:59:36,693 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:59:36,694 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1369006557] [2020-08-22 22:59:36,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:59:36,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:59:36,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:59:36,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:59:36,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 22:59:36,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:59:36,920 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-22 22:59:36,921 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1369006557] [2020-08-22 22:59:36,921 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 22:59:36,921 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 22:59:36,922 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355146997] [2020-08-22 22:59:36,922 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 22:59:36,922 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:59:36,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 22:59:36,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-08-22 22:59:36,923 INFO L87 Difference]: Start difference. First operand 51 states and 54 transitions. Second operand 8 states. [2020-08-22 22:59:37,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:59:37,192 INFO L93 Difference]: Finished difference Result 66 states and 70 transitions. [2020-08-22 22:59:37,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-22 22:59:37,193 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 42 [2020-08-22 22:59:37,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:59:37,194 INFO L225 Difference]: With dead ends: 66 [2020-08-22 22:59:37,195 INFO L226 Difference]: Without dead ends: 60 [2020-08-22 22:59:37,196 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2020-08-22 22:59:37,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-08-22 22:59:37,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 55. [2020-08-22 22:59:37,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-08-22 22:59:37,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 58 transitions. [2020-08-22 22:59:37,224 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 58 transitions. Word has length 42 [2020-08-22 22:59:37,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:59:37,224 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 58 transitions. [2020-08-22 22:59:37,224 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 22:59:37,225 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 58 transitions. [2020-08-22 22:59:37,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-22 22:59:37,228 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:59:37,229 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:59:37,229 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 22:59:37,229 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:59:37,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:59:37,231 INFO L82 PathProgramCache]: Analyzing trace with hash -1747495296, now seen corresponding path program 1 times [2020-08-22 22:59:37,231 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:59:37,232 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1444100093] [2020-08-22 22:59:37,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:59:37,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:59:37,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:59:37,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:59:37,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 22:59:37,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:59:37,374 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 22:59:37,375 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1444100093] [2020-08-22 22:59:37,375 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:59:37,375 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-22 22:59:37,375 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984197410] [2020-08-22 22:59:37,376 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 22:59:37,376 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:59:37,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 22:59:37,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-22 22:59:37,377 INFO L87 Difference]: Start difference. First operand 55 states and 58 transitions. Second operand 10 states. [2020-08-22 22:59:37,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:59:37,665 INFO L93 Difference]: Finished difference Result 94 states and 100 transitions. [2020-08-22 22:59:37,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-22 22:59:37,666 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 52 [2020-08-22 22:59:37,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:59:37,667 INFO L225 Difference]: With dead ends: 94 [2020-08-22 22:59:37,668 INFO L226 Difference]: Without dead ends: 65 [2020-08-22 22:59:37,669 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2020-08-22 22:59:37,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-08-22 22:59:37,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 60. [2020-08-22 22:59:37,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-08-22 22:59:37,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 63 transitions. [2020-08-22 22:59:37,682 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 63 transitions. Word has length 52 [2020-08-22 22:59:37,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:59:37,683 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 63 transitions. [2020-08-22 22:59:37,683 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 22:59:37,683 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 63 transitions. [2020-08-22 22:59:37,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-08-22 22:59:37,685 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:59:37,685 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:59:37,686 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 22:59:37,686 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:59:37,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:59:37,686 INFO L82 PathProgramCache]: Analyzing trace with hash -1872706551, now seen corresponding path program 2 times [2020-08-22 22:59:37,687 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:59:37,687 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [587262556] [2020-08-22 22:59:37,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:59:37,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:59:37,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:59:37,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:59:37,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 22:59:37,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:59:37,858 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-08-22 22:59:37,859 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [587262556] [2020-08-22 22:59:37,859 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:59:37,859 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-08-22 22:59:37,860 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827960733] [2020-08-22 22:59:37,861 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 22:59:37,861 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:59:37,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 22:59:37,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-22 22:59:37,862 INFO L87 Difference]: Start difference. First operand 60 states and 63 transitions. Second operand 6 states. [2020-08-22 22:59:38,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:59:38,061 INFO L93 Difference]: Finished difference Result 94 states and 101 transitions. [2020-08-22 22:59:38,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-22 22:59:38,061 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 58 [2020-08-22 22:59:38,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:59:38,063 INFO L225 Difference]: With dead ends: 94 [2020-08-22 22:59:38,063 INFO L226 Difference]: Without dead ends: 63 [2020-08-22 22:59:38,064 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-08-22 22:59:38,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-08-22 22:59:38,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 61. [2020-08-22 22:59:38,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-08-22 22:59:38,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 64 transitions. [2020-08-22 22:59:38,087 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 64 transitions. Word has length 58 [2020-08-22 22:59:38,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:59:38,088 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 64 transitions. [2020-08-22 22:59:38,088 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 22:59:38,088 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 64 transitions. [2020-08-22 22:59:38,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-08-22 22:59:38,093 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:59:38,094 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:59:38,094 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 22:59:38,094 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:59:38,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:59:38,095 INFO L82 PathProgramCache]: Analyzing trace with hash -557611095, now seen corresponding path program 1 times [2020-08-22 22:59:38,098 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:59:38,098 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [930701265] [2020-08-22 22:59:38,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:59:38,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:59:38,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:59:38,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:59:38,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 22:59:38,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:59:38,809 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 22:59:38,810 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [930701265] [2020-08-22 22:59:38,810 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:59:38,810 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-08-22 22:59:38,810 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498429149] [2020-08-22 22:59:38,811 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-08-22 22:59:38,811 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:59:38,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-08-22 22:59:38,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=537, Unknown=0, NotChecked=0, Total=600 [2020-08-22 22:59:38,812 INFO L87 Difference]: Start difference. First operand 61 states and 64 transitions. Second operand 25 states. [2020-08-22 22:59:41,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:59:41,184 INFO L93 Difference]: Finished difference Result 131 states and 142 transitions. [2020-08-22 22:59:41,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-08-22 22:59:41,185 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 58 [2020-08-22 22:59:41,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:59:41,189 INFO L225 Difference]: With dead ends: 131 [2020-08-22 22:59:41,189 INFO L226 Difference]: Without dead ends: 106 [2020-08-22 22:59:41,192 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 617 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=497, Invalid=2583, Unknown=0, NotChecked=0, Total=3080 [2020-08-22 22:59:41,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-08-22 22:59:41,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 94. [2020-08-22 22:59:41,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-08-22 22:59:41,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 100 transitions. [2020-08-22 22:59:41,211 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 100 transitions. Word has length 58 [2020-08-22 22:59:41,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:59:41,211 INFO L479 AbstractCegarLoop]: Abstraction has 94 states and 100 transitions. [2020-08-22 22:59:41,212 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-08-22 22:59:41,212 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 100 transitions. [2020-08-22 22:59:41,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-08-22 22:59:41,213 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:59:41,214 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:59:41,214 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 22:59:41,214 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:59:41,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:59:41,215 INFO L82 PathProgramCache]: Analyzing trace with hash -2138852750, now seen corresponding path program 2 times [2020-08-22 22:59:41,215 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:59:41,215 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [153670703] [2020-08-22 22:59:41,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:59:41,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:59:41,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:59:41,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:59:41,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 22:59:41,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:59:41,424 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 22:59:41,424 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [153670703] [2020-08-22 22:59:41,424 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:59:41,425 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-08-22 22:59:41,425 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263161529] [2020-08-22 22:59:41,425 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-22 22:59:41,426 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:59:41,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-22 22:59:41,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2020-08-22 22:59:41,427 INFO L87 Difference]: Start difference. First operand 94 states and 100 transitions. Second operand 14 states. [2020-08-22 22:59:42,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:59:42,009 INFO L93 Difference]: Finished difference Result 131 states and 139 transitions. [2020-08-22 22:59:42,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-08-22 22:59:42,009 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 64 [2020-08-22 22:59:42,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:59:42,011 INFO L225 Difference]: With dead ends: 131 [2020-08-22 22:59:42,011 INFO L226 Difference]: Without dead ends: 110 [2020-08-22 22:59:42,012 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=158, Invalid=772, Unknown=0, NotChecked=0, Total=930 [2020-08-22 22:59:42,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-08-22 22:59:42,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 71. [2020-08-22 22:59:42,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-08-22 22:59:42,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 74 transitions. [2020-08-22 22:59:42,029 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 74 transitions. Word has length 64 [2020-08-22 22:59:42,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:59:42,029 INFO L479 AbstractCegarLoop]: Abstraction has 71 states and 74 transitions. [2020-08-22 22:59:42,029 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-22 22:59:42,029 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 74 transitions. [2020-08-22 22:59:42,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-08-22 22:59:42,031 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:59:42,031 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:59:42,031 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 22:59:42,031 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:59:42,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:59:42,032 INFO L82 PathProgramCache]: Analyzing trace with hash 1245154100, now seen corresponding path program 3 times [2020-08-22 22:59:42,032 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:59:42,032 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1086680806] [2020-08-22 22:59:42,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:59:42,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:59:42,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:59:42,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:59:42,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 22:59:42,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:59:42,175 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 18 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 22:59:42,176 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1086680806] [2020-08-22 22:59:42,176 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:59:42,176 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-08-22 22:59:42,176 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941843166] [2020-08-22 22:59:42,177 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-22 22:59:42,177 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:59:42,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-22 22:59:42,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2020-08-22 22:59:42,178 INFO L87 Difference]: Start difference. First operand 71 states and 74 transitions. Second operand 14 states. [2020-08-22 22:59:42,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:59:42,597 INFO L93 Difference]: Finished difference Result 129 states and 135 transitions. [2020-08-22 22:59:42,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-22 22:59:42,597 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 68 [2020-08-22 22:59:42,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:59:42,598 INFO L225 Difference]: With dead ends: 129 [2020-08-22 22:59:42,598 INFO L226 Difference]: Without dead ends: 80 [2020-08-22 22:59:42,601 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=116, Invalid=534, Unknown=0, NotChecked=0, Total=650 [2020-08-22 22:59:42,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-08-22 22:59:42,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 77. [2020-08-22 22:59:42,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-08-22 22:59:42,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 81 transitions. [2020-08-22 22:59:42,633 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 81 transitions. Word has length 68 [2020-08-22 22:59:42,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:59:42,634 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 81 transitions. [2020-08-22 22:59:42,634 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-22 22:59:42,634 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 81 transitions. [2020-08-22 22:59:42,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-08-22 22:59:42,643 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:59:42,643 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:59:42,645 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 22:59:42,645 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:59:42,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:59:42,646 INFO L82 PathProgramCache]: Analyzing trace with hash 685477565, now seen corresponding path program 4 times [2020-08-22 22:59:42,647 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:59:42,647 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1808190685] [2020-08-22 22:59:42,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:59:42,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 22:59:42,710 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 22:59:42,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 22:59:42,752 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 22:59:42,799 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 22:59:42,799 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 22:59:42,799 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 22:59:42,903 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 10:59:42 BoogieIcfgContainer [2020-08-22 22:59:42,903 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 22:59:42,906 INFO L168 Benchmark]: Toolchain (without parser) took 8030.19 ms. Allocated memory was 138.4 MB in the beginning and 312.5 MB in the end (delta: 174.1 MB). Free memory was 103.2 MB in the beginning and 219.5 MB in the end (delta: -116.3 MB). Peak memory consumption was 57.8 MB. Max. memory is 7.1 GB. [2020-08-22 22:59:42,907 INFO L168 Benchmark]: CDTParser took 0.97 ms. Allocated memory is still 138.4 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-08-22 22:59:42,908 INFO L168 Benchmark]: CACSL2BoogieTranslator took 269.82 ms. Allocated memory is still 138.4 MB. Free memory was 103.0 MB in the beginning and 92.6 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. [2020-08-22 22:59:42,909 INFO L168 Benchmark]: Boogie Preprocessor took 125.29 ms. Allocated memory was 138.4 MB in the beginning and 200.8 MB in the end (delta: 62.4 MB). Free memory was 92.6 MB in the beginning and 178.6 MB in the end (delta: -86.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. [2020-08-22 22:59:42,910 INFO L168 Benchmark]: RCFGBuilder took 384.84 ms. Allocated memory is still 200.8 MB. Free memory was 178.6 MB in the beginning and 160.2 MB in the end (delta: 18.5 MB). Peak memory consumption was 18.5 MB. Max. memory is 7.1 GB. [2020-08-22 22:59:42,911 INFO L168 Benchmark]: TraceAbstraction took 7236.66 ms. Allocated memory was 200.8 MB in the beginning and 312.5 MB in the end (delta: 111.7 MB). Free memory was 160.2 MB in the beginning and 219.5 MB in the end (delta: -59.4 MB). Peak memory consumption was 52.3 MB. Max. memory is 7.1 GB. [2020-08-22 22:59:42,915 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.97 ms. Allocated memory is still 138.4 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 269.82 ms. Allocated memory is still 138.4 MB. Free memory was 103.0 MB in the beginning and 92.6 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 125.29 ms. Allocated memory was 138.4 MB in the beginning and 200.8 MB in the end (delta: 62.4 MB). Free memory was 92.6 MB in the beginning and 178.6 MB in the end (delta: -86.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 384.84 ms. Allocated memory is still 200.8 MB. Free memory was 178.6 MB in the beginning and 160.2 MB in the end (delta: 18.5 MB). Peak memory consumption was 18.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 7236.66 ms. Allocated memory was 200.8 MB in the beginning and 312.5 MB in the end (delta: 111.7 MB). Free memory was 160.2 MB in the beginning and 219.5 MB in the end (delta: -59.4 MB). Peak memory consumption was 52.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 13]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L17] int N; VAL [\old(N)=22, N=0] [L21] N = __VERIFIER_nondet_int() VAL [\old(N)=0, __VERIFIER_nondet_int()=3, N=3] [L22] COND FALSE !(N <= 0) VAL [\old(N)=0, N=3] [L23] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [\old(cond)=1, \old(N)=0, N=3] [L11] COND FALSE !(!cond) VAL [\old(cond)=1, \old(N)=0, cond=1, N=3] [L23] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [\old(N)=0, N=3] [L25] int i; VAL [\old(N)=0, N=3] [L26] long long sum[1]; VAL [\old(N)=0, N=3, sum={2:0}] [L27] int *a = malloc(sizeof(int)*N); VAL [\old(N)=0, a={-1:0}, malloc(sizeof(int)*N)={-1:0}, N=3, sum={2:0}] [L29] i=0 VAL [\old(N)=0, a={-1:0}, i=0, malloc(sizeof(int)*N)={-1:0}, N=3, sum={2:0}] [L29] COND TRUE i