/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/eca-rers2012/Problem14_label38.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 21:41:11,603 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 21:41:11,606 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 21:41:11,659 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-10-23 21:41:11,760 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 21:41:11,761 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 21:41:11,762 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 21:41:11,763 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-10-23 21:41:11,787 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 21:41:11,787 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 21:41:11,793 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 21:41:11,793 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 21:41:11,794 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 21:41:11,794 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 21:41:11,794 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 21:41:11,794 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 21:41:11,794 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 21:41:11,795 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 21:41:11,796 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 21:41:11,796 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 21:41:11,796 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 21:41:11,797 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 21:41:11,797 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 21:41:11,797 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-23 21:41:11,798 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 21:41:11,798 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 21:41:11,798 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 21:41:11,798 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 21:41:11,798 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-23 21:41:11,799 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 21:41:11,799 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 21:41:12,194 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 21:41:12,234 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 21:41:12,237 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 21:41:12,242 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 21:41:12,243 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 21:41:12,244 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label38.c [2020-10-23 21:41:12,320 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ec348008/4ca2d8e3d128407a97bd65483d093127/FLAGeb98d8595 [2020-10-23 21:41:13,149 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 21:41:13,150 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label38.c [2020-10-23 21:41:13,163 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ec348008/4ca2d8e3d128407a97bd65483d093127/FLAGeb98d8595 [2020-10-23 21:41:13,348 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ec348008/4ca2d8e3d128407a97bd65483d093127 [2020-10-23 21:41:13,352 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 21:41:13,362 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 21:41:13,367 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 21:41:13,368 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 21:41:13,372 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 21:41:13,373 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 09:41:13" (1/1) ... [2020-10-23 21:41:13,377 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33de0bc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:41:13, skipping insertion in model container [2020-10-23 21:41:13,378 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 09:41:13" (1/1) ... [2020-10-23 21:41:13,390 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 21:41:13,464 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 21:41:13,993 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 21:41:14,013 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 21:41:14,320 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 21:41:14,342 INFO L208 MainTranslator]: Completed translation [2020-10-23 21:41:14,342 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:41:14 WrapperNode [2020-10-23 21:41:14,343 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 21:41:14,344 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 21:41:14,344 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 21:41:14,344 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 21:41:14,360 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:41:14" (1/1) ... [2020-10-23 21:41:14,361 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:41:14" (1/1) ... [2020-10-23 21:41:14,401 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:41:14" (1/1) ... [2020-10-23 21:41:14,402 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:41:14" (1/1) ... [2020-10-23 21:41:14,463 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:41:14" (1/1) ... [2020-10-23 21:41:14,482 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:41:14" (1/1) ... [2020-10-23 21:41:14,491 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:41:14" (1/1) ... [2020-10-23 21:41:14,504 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 21:41:14,505 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 21:41:14,506 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 21:41:14,506 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 21:41:14,507 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:41:14" (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 [2020-10-23 21:41:14,591 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 21:41:14,592 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 21:41:14,592 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 21:41:14,592 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-23 21:41:14,592 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 21:41:14,592 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-23 21:41:14,593 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 21:41:14,593 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 21:41:14,593 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 21:41:14,593 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 21:41:14,593 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-23 21:41:14,593 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-23 21:41:14,594 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 21:41:14,594 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 21:41:14,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 21:41:14,594 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 21:41:14,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 21:41:14,595 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 21:41:14,595 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 21:41:17,003 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 21:41:17,003 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-23 21:41:17,006 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 09:41:17 BoogieIcfgContainer [2020-10-23 21:41:17,007 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 21:41:17,009 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 21:41:17,009 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 21:41:17,013 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 21:41:17,013 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 09:41:13" (1/3) ... [2020-10-23 21:41:17,014 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@554ff589 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 09:41:17, skipping insertion in model container [2020-10-23 21:41:17,014 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:41:14" (2/3) ... [2020-10-23 21:41:17,015 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@554ff589 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 09:41:17, skipping insertion in model container [2020-10-23 21:41:17,015 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 09:41:17" (3/3) ... [2020-10-23 21:41:17,017 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem14_label38.c [2020-10-23 21:41:17,030 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-23 21:41:17,037 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 21:41:17,053 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 21:41:17,081 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 21:41:17,081 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 21:41:17,081 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-10-23 21:41:17,082 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 21:41:17,082 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 21:41:17,082 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 21:41:17,082 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 21:41:17,082 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 21:41:17,114 INFO L276 IsEmpty]: Start isEmpty. Operand 690 states. [2020-10-23 21:41:17,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-23 21:41:17,128 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 21:41:17,129 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 21:41:17,130 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 21:41:17,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 21:41:17,137 INFO L82 PathProgramCache]: Analyzing trace with hash 932947085, now seen corresponding path program 1 times [2020-10-23 21:41:17,147 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 21:41:17,148 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1212751683] [2020-10-23 21:41:17,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 21:41:17,230 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 21:41:17,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 21:41:17,650 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-23 21:41:17,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 21:41:17,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 21:41:17,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 21:41:17,825 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1212751683] [2020-10-23 21:41:17,830 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 21:41:17,830 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-23 21:41:17,854 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056825914] [2020-10-23 21:41:17,865 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-23 21:41:17,866 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 21:41:17,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-23 21:41:17,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-23 21:41:17,885 INFO L87 Difference]: Start difference. First operand 690 states. Second operand 5 states. [2020-10-23 21:41:18,110 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-23 21:41:25,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 21:41:25,391 INFO L93 Difference]: Finished difference Result 1986 states and 2713 transitions. [2020-10-23 21:41:25,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-23 21:41:25,395 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 78 [2020-10-23 21:41:25,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 21:41:25,427 INFO L225 Difference]: With dead ends: 1986 [2020-10-23 21:41:25,428 INFO L226 Difference]: Without dead ends: 1241 [2020-10-23 21:41:25,450 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-23 21:41:25,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1241 states. [2020-10-23 21:41:25,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1241 to 1006. [2020-10-23 21:41:25,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1006 states. [2020-10-23 21:41:25,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1006 states to 1006 states and 1313 transitions. [2020-10-23 21:41:25,686 INFO L78 Accepts]: Start accepts. Automaton has 1006 states and 1313 transitions. Word has length 78 [2020-10-23 21:41:25,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 21:41:25,687 INFO L481 AbstractCegarLoop]: Abstraction has 1006 states and 1313 transitions. [2020-10-23 21:41:25,687 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-23 21:41:25,687 INFO L276 IsEmpty]: Start isEmpty. Operand 1006 states and 1313 transitions. [2020-10-23 21:41:25,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-10-23 21:41:25,698 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 21:41:25,699 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 21:41:25,699 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 21:41:25,699 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 21:41:25,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 21:41:25,701 INFO L82 PathProgramCache]: Analyzing trace with hash -66231902, now seen corresponding path program 1 times [2020-10-23 21:41:25,701 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 21:41:25,701 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [941409968] [2020-10-23 21:41:25,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 21:41:26,932 WARN L193 SmtUtils]: Spent 1.20 s on a formula simplification. DAG size of input: 219 DAG size of output: 69 [2020-10-23 21:41:27,865 WARN L193 SmtUtils]: Spent 895.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 94 [2020-10-23 21:41:28,437 WARN L193 SmtUtils]: Spent 564.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 94 [2020-10-23 21:41:29,724 WARN L193 SmtUtils]: Spent 1.26 s on a formula simplification. DAG size of input: 220 DAG size of output: 75 [2020-10-23 21:41:30,690 WARN L193 SmtUtils]: Spent 959.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 95 [2020-10-23 21:41:31,252 WARN L193 SmtUtils]: Spent 558.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 95 [2020-10-23 21:41:32,498 WARN L193 SmtUtils]: Spent 1.23 s on a formula simplification. DAG size of input: 219 DAG size of output: 69 [2020-10-23 21:41:32,956 WARN L193 SmtUtils]: Spent 453.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 84 [2020-10-23 21:41:33,147 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2020-10-23 21:41:34,410 WARN L193 SmtUtils]: Spent 1.25 s on a formula simplification. DAG size of input: 220 DAG size of output: 75 [2020-10-23 21:41:34,885 WARN L193 SmtUtils]: Spent 469.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 90 [2020-10-23 21:41:35,106 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-10-23 21:41:36,382 WARN L193 SmtUtils]: Spent 1.26 s on a formula simplification. DAG size of input: 220 DAG size of output: 75 [2020-10-23 21:41:36,833 WARN L193 SmtUtils]: Spent 442.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 90 [2020-10-23 21:41:37,050 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-10-23 21:41:38,251 WARN L193 SmtUtils]: Spent 1.19 s on a formula simplification. DAG size of input: 220 DAG size of output: 69 [2020-10-23 21:41:39,057 WARN L193 SmtUtils]: Spent 802.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 88 [2020-10-23 21:41:39,308 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-23 21:41:39,667 ERROR L275 FreeRefinementEngine]: Caught unknown exception: No quantified variables given [2020-10-23 21:41:39,667 WARN L340 FreeRefinementEngine]: Global settings require throwing the following exception [2020-10-23 21:41:39,668 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: No quantified variables given at de.uni_freiburg.informatik.ultimate.logic.NoopScript.quantifier(NoopScript.java:505) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.quantifier(WrapperScript.java:266) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.quantifier(WrapperScript.java:266) at de.uni_freiburg.informatik.ultimate.icfgtransformer.loopacceleration.fastupr.FastUPRCore.checkForAll(FastUPRCore.java:370) at de.uni_freiburg.informatik.ultimate.icfgtransformer.loopacceleration.fastupr.FastUPRCore.periodLoop(FastUPRCore.java:179) at de.uni_freiburg.informatik.ultimate.icfgtransformer.loopacceleration.fastupr.FastUPRCore.prefixLoop(FastUPRCore.java:154) at de.uni_freiburg.informatik.ultimate.icfgtransformer.loopacceleration.fastupr.FastUPRCore.(FastUPRCore.java:145) 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:285) 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:341) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:182) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:134) 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) [2020-10-23 21:41:39,672 INFO L168 Benchmark]: Toolchain (without parser) took 26317.05 ms. Allocated memory was 151.0 MB in the beginning and 282.1 MB in the end (delta: 131.1 MB). Free memory was 125.9 MB in the beginning and 129.1 MB in the end (delta: -3.2 MB). Peak memory consumption was 128.9 MB. Max. memory is 8.0 GB. [2020-10-23 21:41:39,673 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 151.0 MB. Free memory is still 123.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 21:41:39,674 INFO L168 Benchmark]: CACSL2BoogieTranslator took 975.66 ms. Allocated memory is still 151.0 MB. Free memory was 125.4 MB in the beginning and 127.3 MB in the end (delta: -1.9 MB). Peak memory consumption was 33.6 MB. Max. memory is 8.0 GB. [2020-10-23 21:41:39,675 INFO L168 Benchmark]: Boogie Preprocessor took 160.77 ms. Allocated memory is still 151.0 MB. Free memory was 127.3 MB in the beginning and 122.1 MB in the end (delta: 5.2 MB). Peak memory consumption was 5.2 MB. Max. memory is 8.0 GB. [2020-10-23 21:41:39,676 INFO L168 Benchmark]: RCFGBuilder took 2501.56 ms. Allocated memory was 151.0 MB in the beginning and 186.6 MB in the end (delta: 35.7 MB). Free memory was 121.6 MB in the beginning and 124.7 MB in the end (delta: -3.0 MB). Peak memory consumption was 65.7 MB. Max. memory is 8.0 GB. [2020-10-23 21:41:39,677 INFO L168 Benchmark]: TraceAbstraction took 22661.47 ms. Allocated memory was 186.6 MB in the beginning and 282.1 MB in the end (delta: 95.4 MB). Free memory was 124.7 MB in the beginning and 129.6 MB in the end (delta: -5.0 MB). Peak memory consumption was 90.5 MB. Max. memory is 8.0 GB. [2020-10-23 21:41:39,681 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 151.0 MB. Free memory is still 123.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 975.66 ms. Allocated memory is still 151.0 MB. Free memory was 125.4 MB in the beginning and 127.3 MB in the end (delta: -1.9 MB). Peak memory consumption was 33.6 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 160.77 ms. Allocated memory is still 151.0 MB. Free memory was 127.3 MB in the beginning and 122.1 MB in the end (delta: 5.2 MB). Peak memory consumption was 5.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 2501.56 ms. Allocated memory was 151.0 MB in the beginning and 186.6 MB in the end (delta: 35.7 MB). Free memory was 121.6 MB in the beginning and 124.7 MB in the end (delta: -3.0 MB). Peak memory consumption was 65.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 22661.47 ms. Allocated memory was 186.6 MB in the beginning and 282.1 MB in the end (delta: 95.4 MB). Free memory was 124.7 MB in the beginning and 129.6 MB in the end (delta: -5.0 MB). Peak memory consumption was 90.5 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: No quantified variables given de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: No quantified variables given: de.uni_freiburg.informatik.ultimate.logic.NoopScript.quantifier(NoopScript.java:505) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...