/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/loop-invgen/sendmail-close-angle.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-07 02:08:14,505 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-07 02:08:14,509 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-07 02:08:14,563 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-11-07 02:08:14,591 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-07 02:08:14,594 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-07 02:08:14,596 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-07 02:08:14,598 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-07 02:08:14,599 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-07 02:08:14,602 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-07 02:08:14,609 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-07 02:08:14,629 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-07 02:08:14,631 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-07 02:08:14,633 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-07 02:08:14,636 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-07 02:08:14,637 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-07 02:08:14,646 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-07 02:08:14,657 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-07 02:08:14,658 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-07 02:08:14,659 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-07 02:08:14,660 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-11-07 02:08:14,685 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-07 02:08:14,686 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-07 02:08:14,690 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-07 02:08:14,691 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-07 02:08:14,691 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-07 02:08:14,691 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-07 02:08:14,691 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-07 02:08:14,692 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-07 02:08:14,692 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-07 02:08:14,692 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-07 02:08:14,693 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-07 02:08:14,693 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-07 02:08:14,694 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-07 02:08:14,694 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-07 02:08:14,694 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-07 02:08:14,695 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-11-07 02:08:14,695 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-07 02:08:14,695 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-07 02:08:14,695 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 02:08:14,696 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-07 02:08:14,696 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-11-07 02:08:14,696 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-07 02:08:14,696 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-07 02:08:15,081 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-07 02:08:15,114 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-07 02:08:15,117 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-07 02:08:15,118 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-07 02:08:15,119 INFO L275 PluginConnector]: CDTParser initialized [2020-11-07 02:08:15,120 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/sendmail-close-angle.i [2020-11-07 02:08:15,197 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b42d19333/3fa6f1cb88b84fe59bd439e3aed855d1/FLAGd477f32cc [2020-11-07 02:08:15,749 INFO L306 CDTParser]: Found 1 translation units. [2020-11-07 02:08:15,751 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/sendmail-close-angle.i [2020-11-07 02:08:15,760 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b42d19333/3fa6f1cb88b84fe59bd439e3aed855d1/FLAGd477f32cc [2020-11-07 02:08:16,108 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b42d19333/3fa6f1cb88b84fe59bd439e3aed855d1 [2020-11-07 02:08:16,111 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-07 02:08:16,120 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-07 02:08:16,125 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-07 02:08:16,125 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-07 02:08:16,129 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-07 02:08:16,130 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:08:16" (1/1) ... [2020-11-07 02:08:16,151 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ec82c3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:08:16, skipping insertion in model container [2020-11-07 02:08:16,152 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:08:16" (1/1) ... [2020-11-07 02:08:16,164 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-07 02:08:16,187 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-07 02:08:16,387 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 02:08:16,402 INFO L203 MainTranslator]: Completed pre-run [2020-11-07 02:08:16,443 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 02:08:16,470 INFO L208 MainTranslator]: Completed translation [2020-11-07 02:08:16,471 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:08:16 WrapperNode [2020-11-07 02:08:16,471 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-07 02:08:16,473 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-07 02:08:16,473 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-07 02:08:16,473 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-07 02:08:16,488 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:08:16" (1/1) ... [2020-11-07 02:08:16,488 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:08:16" (1/1) ... [2020-11-07 02:08:16,500 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:08:16" (1/1) ... [2020-11-07 02:08:16,502 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:08:16" (1/1) ... [2020-11-07 02:08:16,523 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:08:16" (1/1) ... [2020-11-07 02:08:16,533 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:08:16" (1/1) ... [2020-11-07 02:08:16,543 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:08:16" (1/1) ... [2020-11-07 02:08:16,548 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-07 02:08:16,549 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-07 02:08:16,549 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-07 02:08:16,549 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-07 02:08:16,554 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:08:16" (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 [2020-11-07 02:08:16,648 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-07 02:08:16,648 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-07 02:08:16,649 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-07 02:08:16,650 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-11-07 02:08:16,650 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-11-07 02:08:16,650 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-07 02:08:16,650 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-07 02:08:16,651 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-07 02:08:16,651 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-11-07 02:08:16,651 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-11-07 02:08:16,652 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-07 02:08:16,652 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-07 02:08:16,652 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-11-07 02:08:16,653 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-11-07 02:08:16,653 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-07 02:08:16,653 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-07 02:08:16,654 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-07 02:08:16,654 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-07 02:08:16,655 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-07 02:08:16,655 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-07 02:08:16,656 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-07 02:08:16,656 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-07 02:08:17,125 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-07 02:08:17,126 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-11-07 02:08:17,145 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:08:17 BoogieIcfgContainer [2020-11-07 02:08:17,145 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-07 02:08:17,147 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-07 02:08:17,147 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-07 02:08:17,153 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-07 02:08:17,153 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 02:08:16" (1/3) ... [2020-11-07 02:08:17,154 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d91c02d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:08:17, skipping insertion in model container [2020-11-07 02:08:17,154 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:08:16" (2/3) ... [2020-11-07 02:08:17,155 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d91c02d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:08:17, skipping insertion in model container [2020-11-07 02:08:17,155 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:08:17" (3/3) ... [2020-11-07 02:08:17,157 INFO L111 eAbstractionObserver]: Analyzing ICFG sendmail-close-angle.i [2020-11-07 02:08:17,174 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-07 02:08:17,177 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-07 02:08:17,189 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-07 02:08:17,211 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-07 02:08:17,211 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-07 02:08:17,211 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-11-07 02:08:17,211 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-07 02:08:17,211 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-07 02:08:17,211 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-07 02:08:17,212 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-07 02:08:17,212 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-07 02:08:17,228 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states. [2020-11-07 02:08:17,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-11-07 02:08:17,238 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 02:08:17,239 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] [2020-11-07 02:08:17,240 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 02:08:17,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 02:08:17,246 INFO L82 PathProgramCache]: Analyzing trace with hash 1775398781, now seen corresponding path program 1 times [2020-11-07 02:08:17,254 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 02:08:17,255 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1202108970] [2020-11-07 02:08:17,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 02:08:17,333 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 02:08:17,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:08:17,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:08:17,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:08:17,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 02:08:17,610 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1202108970] [2020-11-07 02:08:17,612 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 02:08:17,613 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-07 02:08:17,613 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990686740] [2020-11-07 02:08:17,619 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-07 02:08:17,619 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 02:08:17,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-07 02:08:17,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-07 02:08:17,637 INFO L87 Difference]: Start difference. First operand 68 states. Second operand 3 states. [2020-11-07 02:08:17,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 02:08:17,813 INFO L93 Difference]: Finished difference Result 106 states and 140 transitions. [2020-11-07 02:08:17,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-07 02:08:17,816 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 33 [2020-11-07 02:08:17,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 02:08:17,827 INFO L225 Difference]: With dead ends: 106 [2020-11-07 02:08:17,827 INFO L226 Difference]: Without dead ends: 56 [2020-11-07 02:08:17,833 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-07 02:08:17,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-11-07 02:08:17,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-11-07 02:08:17,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-11-07 02:08:17,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 64 transitions. [2020-11-07 02:08:17,904 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 64 transitions. Word has length 33 [2020-11-07 02:08:17,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 02:08:17,905 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 64 transitions. [2020-11-07 02:08:17,905 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-07 02:08:17,905 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 64 transitions. [2020-11-07 02:08:17,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-11-07 02:08:17,907 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 02:08:17,908 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] [2020-11-07 02:08:17,908 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-07 02:08:17,908 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 02:08:17,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 02:08:17,910 INFO L82 PathProgramCache]: Analyzing trace with hash -136611355, now seen corresponding path program 1 times [2020-11-07 02:08:17,910 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 02:08:17,910 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1412082841] [2020-11-07 02:08:17,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 02:08:17,916 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 02:08:17,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:08:18,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:08:18,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:08:18,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 02:08:18,183 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1412082841] [2020-11-07 02:08:18,184 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 02:08:18,184 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-07 02:08:18,185 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263290914] [2020-11-07 02:08:18,186 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-07 02:08:18,186 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 02:08:18,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-07 02:08:18,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-07 02:08:18,192 INFO L87 Difference]: Start difference. First operand 56 states and 64 transitions. Second operand 6 states. [2020-11-07 02:08:18,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 02:08:18,758 INFO L93 Difference]: Finished difference Result 77 states and 90 transitions. [2020-11-07 02:08:18,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-07 02:08:18,759 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 35 [2020-11-07 02:08:18,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 02:08:18,762 INFO L225 Difference]: With dead ends: 77 [2020-11-07 02:08:18,762 INFO L226 Difference]: Without dead ends: 73 [2020-11-07 02:08:18,764 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-11-07 02:08:18,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-11-07 02:08:18,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 67. [2020-11-07 02:08:18,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-11-07 02:08:18,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 78 transitions. [2020-11-07 02:08:18,788 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 78 transitions. Word has length 35 [2020-11-07 02:08:18,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 02:08:18,788 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 78 transitions. [2020-11-07 02:08:18,789 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-07 02:08:18,789 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 78 transitions. [2020-11-07 02:08:18,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-11-07 02:08:18,790 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 02:08:18,791 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-11-07 02:08:18,791 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-07 02:08:18,791 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 02:08:18,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 02:08:18,792 INFO L82 PathProgramCache]: Analyzing trace with hash -1196890534, now seen corresponding path program 1 times [2020-11-07 02:08:18,792 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 02:08:18,792 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [502408165] [2020-11-07 02:08:18,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 02:08:18,796 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 02:08:18,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:08:18,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:08:18,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:08:18,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-11-07 02:08:18,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:08:18,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 02:08:18,926 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [502408165] [2020-11-07 02:08:18,926 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 02:08:18,926 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-07 02:08:18,927 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191903062] [2020-11-07 02:08:18,927 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-07 02:08:18,927 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 02:08:18,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-07 02:08:18,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-07 02:08:18,929 INFO L87 Difference]: Start difference. First operand 67 states and 78 transitions. Second operand 7 states. [2020-11-07 02:08:19,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 02:08:19,526 INFO L93 Difference]: Finished difference Result 81 states and 93 transitions. [2020-11-07 02:08:19,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-07 02:08:19,527 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 40 [2020-11-07 02:08:19,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 02:08:19,529 INFO L225 Difference]: With dead ends: 81 [2020-11-07 02:08:19,529 INFO L226 Difference]: Without dead ends: 77 [2020-11-07 02:08:19,530 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2020-11-07 02:08:19,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-11-07 02:08:19,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 73. [2020-11-07 02:08:19,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-11-07 02:08:19,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 85 transitions. [2020-11-07 02:08:19,550 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 85 transitions. Word has length 40 [2020-11-07 02:08:19,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 02:08:19,551 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 85 transitions. [2020-11-07 02:08:19,551 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-07 02:08:19,551 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 85 transitions. [2020-11-07 02:08:19,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-11-07 02:08:19,553 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 02:08:19,553 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-11-07 02:08:19,553 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-07 02:08:19,554 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 02:08:19,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 02:08:19,555 INFO L82 PathProgramCache]: Analyzing trace with hash 132999514, now seen corresponding path program 1 times [2020-11-07 02:08:19,555 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 02:08:19,555 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [801620852] [2020-11-07 02:08:19,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 02:08:19,558 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 02:08:19,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:08:19,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:08:19,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:08:19,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-11-07 02:08:19,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:08:19,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-11-07 02:08:19,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:08:19,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 02:08:19,701 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [801620852] [2020-11-07 02:08:19,703 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 02:08:19,703 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-07 02:08:19,703 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521799503] [2020-11-07 02:08:19,704 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-07 02:08:19,704 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 02:08:19,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-07 02:08:19,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-11-07 02:08:19,705 INFO L87 Difference]: Start difference. First operand 73 states and 85 transitions. Second operand 8 states. [2020-11-07 02:08:20,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 02:08:20,354 INFO L93 Difference]: Finished difference Result 88 states and 100 transitions. [2020-11-07 02:08:20,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-07 02:08:20,355 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 48 [2020-11-07 02:08:20,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 02:08:20,357 INFO L225 Difference]: With dead ends: 88 [2020-11-07 02:08:20,357 INFO L226 Difference]: Without dead ends: 84 [2020-11-07 02:08:20,359 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2020-11-07 02:08:20,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-11-07 02:08:20,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 81. [2020-11-07 02:08:20,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-11-07 02:08:20,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 93 transitions. [2020-11-07 02:08:20,379 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 93 transitions. Word has length 48 [2020-11-07 02:08:20,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 02:08:20,380 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 93 transitions. [2020-11-07 02:08:20,380 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-07 02:08:20,380 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 93 transitions. [2020-11-07 02:08:20,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-11-07 02:08:20,382 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 02:08:20,382 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 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] [2020-11-07 02:08:20,383 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-07 02:08:20,383 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 02:08:20,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 02:08:20,384 INFO L82 PathProgramCache]: Analyzing trace with hash -2088261755, now seen corresponding path program 1 times [2020-11-07 02:08:20,384 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 02:08:20,384 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [412331617] [2020-11-07 02:08:20,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 02:08:20,387 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 02:08:20,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:08:20,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:08:20,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:08:20,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-11-07 02:08:20,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:08:20,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-11-07 02:08:20,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:08:20,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-11-07 02:08:20,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:08:20,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 02:08:20,545 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [412331617] [2020-11-07 02:08:20,545 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 02:08:20,545 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-11-07 02:08:20,546 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334879668] [2020-11-07 02:08:20,546 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-07 02:08:20,547 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 02:08:20,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-07 02:08:20,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-11-07 02:08:20,548 INFO L87 Difference]: Start difference. First operand 81 states and 93 transitions. Second operand 9 states. [2020-11-07 02:08:21,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 02:08:21,246 INFO L93 Difference]: Finished difference Result 92 states and 103 transitions. [2020-11-07 02:08:21,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-07 02:08:21,246 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 53 [2020-11-07 02:08:21,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 02:08:21,248 INFO L225 Difference]: With dead ends: 92 [2020-11-07 02:08:21,248 INFO L226 Difference]: Without dead ends: 72 [2020-11-07 02:08:21,249 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2020-11-07 02:08:21,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-11-07 02:08:21,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 70. [2020-11-07 02:08:21,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-11-07 02:08:21,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 78 transitions. [2020-11-07 02:08:21,268 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 78 transitions. Word has length 53 [2020-11-07 02:08:21,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 02:08:21,269 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 78 transitions. [2020-11-07 02:08:21,269 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-07 02:08:21,269 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 78 transitions. [2020-11-07 02:08:21,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-11-07 02:08:21,270 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 02:08:21,271 INFO L422 BasicCegarLoop]: trace histogram [3, 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, 1] [2020-11-07 02:08:21,271 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-07 02:08:21,271 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 02:08:21,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 02:08:21,272 INFO L82 PathProgramCache]: Analyzing trace with hash -15556804, now seen corresponding path program 1 times [2020-11-07 02:08:21,272 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 02:08:21,272 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1409756811] [2020-11-07 02:08:21,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 02:08:21,275 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 02:08:21,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:08:21,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:08:21,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:08:21,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-11-07 02:08:21,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:08:21,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-11-07 02:08:21,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:08:21,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 02:08:21,447 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1409756811] [2020-11-07 02:08:21,447 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 02:08:21,447 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-07 02:08:21,447 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366729630] [2020-11-07 02:08:21,448 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-07 02:08:21,448 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 02:08:21,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-07 02:08:21,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-11-07 02:08:21,451 INFO L87 Difference]: Start difference. First operand 70 states and 78 transitions. Second operand 8 states. [2020-11-07 02:08:22,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 02:08:22,126 INFO L93 Difference]: Finished difference Result 105 states and 121 transitions. [2020-11-07 02:08:22,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-07 02:08:22,126 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2020-11-07 02:08:22,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 02:08:22,128 INFO L225 Difference]: With dead ends: 105 [2020-11-07 02:08:22,128 INFO L226 Difference]: Without dead ends: 101 [2020-11-07 02:08:22,129 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2020-11-07 02:08:22,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-11-07 02:08:22,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 81. [2020-11-07 02:08:22,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-11-07 02:08:22,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 89 transitions. [2020-11-07 02:08:22,173 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 89 transitions. Word has length 52 [2020-11-07 02:08:22,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 02:08:22,174 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 89 transitions. [2020-11-07 02:08:22,178 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-07 02:08:22,179 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 89 transitions. [2020-11-07 02:08:22,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-11-07 02:08:22,181 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 02:08:22,181 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 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, 1, 1, 1] [2020-11-07 02:08:22,182 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-07 02:08:22,182 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 02:08:22,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 02:08:22,182 INFO L82 PathProgramCache]: Analyzing trace with hash 2032807907, now seen corresponding path program 1 times [2020-11-07 02:08:22,183 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 02:08:22,185 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1543633730] [2020-11-07 02:08:22,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 02:08:22,189 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 02:08:22,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:08:22,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:08:22,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:08:22,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-11-07 02:08:22,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:08:22,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-11-07 02:08:22,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:08:22,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-11-07 02:08:22,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:08:22,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 02:08:22,363 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1543633730] [2020-11-07 02:08:22,364 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 02:08:22,364 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-11-07 02:08:22,364 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792963069] [2020-11-07 02:08:22,364 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-07 02:08:22,365 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 02:08:22,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-07 02:08:22,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-11-07 02:08:22,366 INFO L87 Difference]: Start difference. First operand 81 states and 89 transitions. Second operand 10 states. [2020-11-07 02:08:23,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 02:08:23,175 INFO L93 Difference]: Finished difference Result 109 states and 124 transitions. [2020-11-07 02:08:23,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-07 02:08:23,176 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 57 [2020-11-07 02:08:23,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 02:08:23,181 INFO L225 Difference]: With dead ends: 109 [2020-11-07 02:08:23,181 INFO L226 Difference]: Without dead ends: 105 [2020-11-07 02:08:23,183 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=86, Invalid=256, Unknown=0, NotChecked=0, Total=342 [2020-11-07 02:08:23,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-11-07 02:08:23,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 86. [2020-11-07 02:08:23,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-11-07 02:08:23,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 94 transitions. [2020-11-07 02:08:23,220 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 94 transitions. Word has length 57 [2020-11-07 02:08:23,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 02:08:23,221 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 94 transitions. [2020-11-07 02:08:23,221 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-07 02:08:23,221 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 94 transitions. [2020-11-07 02:08:23,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-11-07 02:08:23,223 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 02:08:23,223 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 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, 1, 1, 1, 1, 1, 1] [2020-11-07 02:08:23,224 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-07 02:08:23,225 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 02:08:23,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 02:08:23,226 INFO L82 PathProgramCache]: Analyzing trace with hash 1727226990, now seen corresponding path program 1 times [2020-11-07 02:08:23,226 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 02:08:23,227 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [81745192] [2020-11-07 02:08:23,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 02:08:23,337 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-07 02:08:23,337 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-07 02:08:23,342 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-07 02:08:23,342 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-07 02:08:23,353 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-07 02:08:23,353 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-07 02:08:23,476 WARN L194 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 34 [2020-11-07 02:08:23,507 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.icfgtransformer.loopacceleration.fastupr.paraoct.OctagonCalculator.normalizeVarNames(OctagonCalculator.java:153) at de.uni_freiburg.informatik.ultimate.icfgtransformer.loopacceleration.fastupr.FastUPRCore.(FastUPRCore.java:133) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.loopaccelerator.Accelerator.fastUprAcceleration(Accelerator.java:109) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.loopaccelerator.Accelerator.accelerateLoop(Accelerator.java:89) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.acceleratedInterpolationCore(AcceleratedInterpolation.java:292) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.(AcceleratedInterpolation.java:227) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModulePreferences.construct(IpTcStrategyModulePreferences.java:147) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:241) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:84) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:74) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:511) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:438) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:372) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:343) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:197) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:149) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2020-11-07 02:08:23,519 INFO L168 Benchmark]: Toolchain (without parser) took 7401.69 ms. Allocated memory was 151.0 MB in the beginning and 218.1 MB in the end (delta: 67.1 MB). Free memory was 127.8 MB in the beginning and 104.4 MB in the end (delta: 23.4 MB). Peak memory consumption was 91.2 MB. Max. memory is 8.0 GB. [2020-11-07 02:08:23,528 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 151.0 MB. Free memory is still 125.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-07 02:08:23,530 INFO L168 Benchmark]: CACSL2BoogieTranslator took 347.26 ms. Allocated memory is still 151.0 MB. Free memory was 127.1 MB in the beginning and 117.3 MB in the end (delta: 9.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-11-07 02:08:23,530 INFO L168 Benchmark]: Boogie Preprocessor took 75.18 ms. Allocated memory is still 151.0 MB. Free memory was 117.3 MB in the beginning and 115.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-11-07 02:08:23,531 INFO L168 Benchmark]: RCFGBuilder took 596.41 ms. Allocated memory is still 151.0 MB. Free memory was 115.6 MB in the beginning and 133.7 MB in the end (delta: -18.1 MB). Peak memory consumption was 20.5 MB. Max. memory is 8.0 GB. [2020-11-07 02:08:23,532 INFO L168 Benchmark]: TraceAbstraction took 6366.93 ms. Allocated memory was 151.0 MB in the beginning and 218.1 MB in the end (delta: 67.1 MB). Free memory was 133.2 MB in the beginning and 104.4 MB in the end (delta: 28.8 MB). Peak memory consumption was 97.0 MB. Max. memory is 8.0 GB. [2020-11-07 02:08:23,540 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 151.0 MB. Free memory is still 125.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 347.26 ms. Allocated memory is still 151.0 MB. Free memory was 127.1 MB in the beginning and 117.3 MB in the end (delta: 9.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 75.18 ms. Allocated memory is still 151.0 MB. Free memory was 117.3 MB in the beginning and 115.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 596.41 ms. Allocated memory is still 151.0 MB. Free memory was 115.6 MB in the beginning and 133.7 MB in the end (delta: -18.1 MB). Peak memory consumption was 20.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 6366.93 ms. Allocated memory was 151.0 MB in the beginning and 218.1 MB in the end (delta: 67.1 MB). Free memory was 133.2 MB in the beginning and 104.4 MB in the end (delta: 28.8 MB). Peak memory consumption was 97.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.icfgtransformer.loopacceleration.fastupr.paraoct.OctagonCalculator.normalizeVarNames(OctagonCalculator.java:153) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...