/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/ldv-regression/test25-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-86f66a4 [2020-07-07 13:24:31,629 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-07 13:24:31,632 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-07 13:24:31,651 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-07-07 13:24:31,716 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-07 13:24:31,736 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-07 13:24:31,736 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-07 13:24:31,737 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-07 13:24:31,738 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-07 13:24:31,738 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-07 13:24:31,738 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-07 13:24:31,744 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-07 13:24:31,744 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-07 13:24:31,744 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-07 13:24:31,744 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-07 13:24:31,744 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-07 13:24:31,745 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-07 13:24:31,745 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-07 13:24:31,745 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-07 13:24:31,745 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-07 13:24:31,745 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-07 13:24:31,746 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-07 13:24:31,746 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-07 13:24:31,746 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 13:24:31,750 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-07 13:24:31,750 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-07 13:24:31,751 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-07 13:24:31,751 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-07 13:24:32,027 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-07 13:24:32,046 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-07 13:24:32,050 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-07 13:24:32,051 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-07 13:24:32,051 INFO L275 PluginConnector]: CDTParser initialized [2020-07-07 13:24:32,052 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test25-2.c [2020-07-07 13:24:32,131 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4bb828fd/92cb8373270749ffbdd242c7c14dcbe3/FLAG66c5b6597 [2020-07-07 13:24:32,629 INFO L306 CDTParser]: Found 1 translation units. [2020-07-07 13:24:32,630 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test25-2.c [2020-07-07 13:24:32,634 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4bb828fd/92cb8373270749ffbdd242c7c14dcbe3/FLAG66c5b6597 [2020-07-07 13:24:33,016 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4bb828fd/92cb8373270749ffbdd242c7c14dcbe3 [2020-07-07 13:24:33,027 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-07 13:24:33,029 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-07 13:24:33,030 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-07 13:24:33,031 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-07 13:24:33,034 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-07 13:24:33,036 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 01:24:33" (1/1) ... [2020-07-07 13:24:33,039 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38be9ff7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:24:33, skipping insertion in model container [2020-07-07 13:24:33,039 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 01:24:33" (1/1) ... [2020-07-07 13:24:33,048 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-07 13:24:33,075 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-07 13:24:33,286 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 13:24:33,299 INFO L203 MainTranslator]: Completed pre-run [2020-07-07 13:24:33,324 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 13:24:33,444 INFO L208 MainTranslator]: Completed translation [2020-07-07 13:24:33,444 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:24:33 WrapperNode [2020-07-07 13:24:33,445 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-07 13:24:33,446 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-07 13:24:33,446 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-07 13:24:33,446 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-07 13:24:33,458 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:24:33" (1/1) ... [2020-07-07 13:24:33,458 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:24:33" (1/1) ... [2020-07-07 13:24:33,467 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:24:33" (1/1) ... [2020-07-07 13:24:33,467 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:24:33" (1/1) ... [2020-07-07 13:24:33,477 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:24:33" (1/1) ... [2020-07-07 13:24:33,482 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:24:33" (1/1) ... [2020-07-07 13:24:33,484 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:24:33" (1/1) ... [2020-07-07 13:24:33,487 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-07 13:24:33,487 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-07 13:24:33,487 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-07 13:24:33,487 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-07 13:24:33,488 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:24:33" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 13:24:33,553 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-07 13:24:33,553 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-07 13:24:33,553 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-07-07 13:24:33,553 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-07 13:24:33,554 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-07 13:24:33,554 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-07 13:24:33,554 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-07-07 13:24:33,554 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-07 13:24:33,554 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-07 13:24:33,555 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-07 13:24:33,555 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-07 13:24:33,555 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-07 13:24:33,555 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-07 13:24:33,555 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-07 13:24:33,555 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-07 13:24:33,556 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-07 13:24:33,888 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-07 13:24:33,889 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-07-07 13:24:33,894 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 01:24:33 BoogieIcfgContainer [2020-07-07 13:24:33,894 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-07 13:24:33,895 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-07 13:24:33,895 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-07 13:24:33,899 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-07 13:24:33,899 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.07 01:24:33" (1/3) ... [2020-07-07 13:24:33,900 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d1d1e94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 01:24:33, skipping insertion in model container [2020-07-07 13:24:33,901 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:24:33" (2/3) ... [2020-07-07 13:24:33,901 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d1d1e94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 01:24:33, skipping insertion in model container [2020-07-07 13:24:33,901 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 01:24:33" (3/3) ... [2020-07-07 13:24:33,903 INFO L109 eAbstractionObserver]: Analyzing ICFG test25-2.c [2020-07-07 13:24:33,915 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-07 13:24:33,922 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-07 13:24:33,938 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-07 13:24:33,963 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-07 13:24:33,964 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-07 13:24:33,964 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-07 13:24:33,964 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-07 13:24:33,964 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-07 13:24:33,964 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-07 13:24:33,964 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-07 13:24:33,965 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-07 13:24:33,986 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states. [2020-07-07 13:24:33,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-07-07 13:24:33,999 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:24:34,000 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] [2020-07-07 13:24:34,001 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:24:34,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:24:34,006 INFO L82 PathProgramCache]: Analyzing trace with hash 144198137, now seen corresponding path program 1 times [2020-07-07 13:24:34,012 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:24:34,013 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [297439960] [2020-07-07 13:24:34,013 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:24:34,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:24:34,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:24:34,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:24:34,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:24:34,319 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:24:34,323 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [297439960] [2020-07-07 13:24:34,326 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:24:34,327 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-07 13:24:34,328 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814835362] [2020-07-07 13:24:34,332 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 13:24:34,333 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:24:34,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 13:24:34,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 13:24:34,352 INFO L87 Difference]: Start difference. First operand 77 states. Second operand 3 states. [2020-07-07 13:24:34,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:24:34,571 INFO L93 Difference]: Finished difference Result 124 states and 134 transitions. [2020-07-07 13:24:34,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 13:24:34,574 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 44 [2020-07-07 13:24:34,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:24:34,586 INFO L225 Difference]: With dead ends: 124 [2020-07-07 13:24:34,587 INFO L226 Difference]: Without dead ends: 60 [2020-07-07 13:24:34,592 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 13:24:34,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-07-07 13:24:34,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2020-07-07 13:24:34,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-07-07 13:24:34,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 61 transitions. [2020-07-07 13:24:34,646 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 61 transitions. Word has length 44 [2020-07-07 13:24:34,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:24:34,646 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 61 transitions. [2020-07-07 13:24:34,647 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 13:24:34,647 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 61 transitions. [2020-07-07 13:24:34,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-07-07 13:24:34,649 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:24:34,649 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] [2020-07-07 13:24:34,650 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-07 13:24:34,650 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:24:34,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:24:34,651 INFO L82 PathProgramCache]: Analyzing trace with hash 608042528, now seen corresponding path program 1 times [2020-07-07 13:24:34,651 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:24:34,651 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [847753768] [2020-07-07 13:24:34,652 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:24:34,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:24:34,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:24:34,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:24:34,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:24:34,753 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:24:34,753 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [847753768] [2020-07-07 13:24:34,754 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:24:34,754 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-07 13:24:34,754 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186109365] [2020-07-07 13:24:34,756 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-07 13:24:34,756 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:24:34,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-07 13:24:34,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-07 13:24:34,757 INFO L87 Difference]: Start difference. First operand 60 states and 61 transitions. Second operand 4 states. [2020-07-07 13:24:34,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:24:34,916 INFO L93 Difference]: Finished difference Result 104 states and 106 transitions. [2020-07-07 13:24:34,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-07 13:24:34,917 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 46 [2020-07-07 13:24:34,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:24:34,920 INFO L225 Difference]: With dead ends: 104 [2020-07-07 13:24:34,921 INFO L226 Difference]: Without dead ends: 69 [2020-07-07 13:24:34,924 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-07 13:24:34,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-07-07 13:24:34,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 61. [2020-07-07 13:24:34,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-07-07 13:24:34,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 62 transitions. [2020-07-07 13:24:34,941 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 62 transitions. Word has length 46 [2020-07-07 13:24:34,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:24:34,942 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 62 transitions. [2020-07-07 13:24:34,942 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-07 13:24:34,942 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 62 transitions. [2020-07-07 13:24:34,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-07-07 13:24:34,944 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:24:34,945 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] [2020-07-07 13:24:34,945 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-07 13:24:34,946 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:24:34,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:24:34,946 INFO L82 PathProgramCache]: Analyzing trace with hash 1644606330, now seen corresponding path program 1 times [2020-07-07 13:24:34,947 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:24:34,947 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [238224877] [2020-07-07 13:24:34,961 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:24:35,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:24:35,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:24:35,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:24:35,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:24:35,126 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:24:35,127 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [238224877] [2020-07-07 13:24:35,127 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:24:35,127 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-07 13:24:35,127 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123272653] [2020-07-07 13:24:35,128 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-07 13:24:35,128 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:24:35,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-07 13:24:35,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-07-07 13:24:35,129 INFO L87 Difference]: Start difference. First operand 61 states and 62 transitions. Second operand 6 states. [2020-07-07 13:24:35,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:24:35,294 INFO L93 Difference]: Finished difference Result 114 states and 116 transitions. [2020-07-07 13:24:35,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-07 13:24:35,294 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 56 [2020-07-07 13:24:35,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:24:35,296 INFO L225 Difference]: With dead ends: 114 [2020-07-07 13:24:35,296 INFO L226 Difference]: Without dead ends: 79 [2020-07-07 13:24:35,297 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-07-07 13:24:35,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-07-07 13:24:35,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 71. [2020-07-07 13:24:35,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-07-07 13:24:35,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 72 transitions. [2020-07-07 13:24:35,308 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 72 transitions. Word has length 56 [2020-07-07 13:24:35,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:24:35,309 INFO L479 AbstractCegarLoop]: Abstraction has 71 states and 72 transitions. [2020-07-07 13:24:35,309 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-07 13:24:35,309 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 72 transitions. [2020-07-07 13:24:35,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-07-07 13:24:35,310 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:24:35,311 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:24:35,311 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-07 13:24:35,311 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:24:35,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:24:35,312 INFO L82 PathProgramCache]: Analyzing trace with hash 278397012, now seen corresponding path program 2 times [2020-07-07 13:24:35,312 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:24:35,312 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1355749209] [2020-07-07 13:24:35,313 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:24:35,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:24:35,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:24:35,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:24:35,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:24:35,447 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:24:35,448 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1355749209] [2020-07-07 13:24:35,448 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:24:35,448 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-07-07 13:24:35,449 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421570207] [2020-07-07 13:24:35,449 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-07 13:24:35,449 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:24:35,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-07 13:24:35,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-07-07 13:24:35,450 INFO L87 Difference]: Start difference. First operand 71 states and 72 transitions. Second operand 8 states. [2020-07-07 13:24:35,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:24:35,625 INFO L93 Difference]: Finished difference Result 124 states and 126 transitions. [2020-07-07 13:24:35,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-07 13:24:35,625 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 66 [2020-07-07 13:24:35,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:24:35,627 INFO L225 Difference]: With dead ends: 124 [2020-07-07 13:24:35,627 INFO L226 Difference]: Without dead ends: 89 [2020-07-07 13:24:35,628 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2020-07-07 13:24:35,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-07-07 13:24:35,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 81. [2020-07-07 13:24:35,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-07-07 13:24:35,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 82 transitions. [2020-07-07 13:24:35,640 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 82 transitions. Word has length 66 [2020-07-07 13:24:35,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:24:35,640 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 82 transitions. [2020-07-07 13:24:35,640 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-07 13:24:35,641 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 82 transitions. [2020-07-07 13:24:35,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-07-07 13:24:35,642 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:24:35,644 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-07-07 13:24:35,644 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-07 13:24:35,645 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:24:35,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:24:35,645 INFO L82 PathProgramCache]: Analyzing trace with hash 767198382, now seen corresponding path program 3 times [2020-07-07 13:24:35,646 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:24:35,646 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1867309997] [2020-07-07 13:24:35,646 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:24:35,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:24:35,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:24:35,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:24:35,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:24:35,802 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:24:35,802 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1867309997] [2020-07-07 13:24:35,802 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:24:35,802 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-07-07 13:24:35,803 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753689645] [2020-07-07 13:24:35,803 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-07 13:24:35,804 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:24:35,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-07 13:24:35,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-07-07 13:24:35,805 INFO L87 Difference]: Start difference. First operand 81 states and 82 transitions. Second operand 10 states. [2020-07-07 13:24:36,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:24:36,071 INFO L93 Difference]: Finished difference Result 134 states and 136 transitions. [2020-07-07 13:24:36,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-07-07 13:24:36,072 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 76 [2020-07-07 13:24:36,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:24:36,073 INFO L225 Difference]: With dead ends: 134 [2020-07-07 13:24:36,073 INFO L226 Difference]: Without dead ends: 99 [2020-07-07 13:24:36,075 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2020-07-07 13:24:36,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-07-07 13:24:36,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 91. [2020-07-07 13:24:36,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-07-07 13:24:36,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 92 transitions. [2020-07-07 13:24:36,093 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 92 transitions. Word has length 76 [2020-07-07 13:24:36,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:24:36,095 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 92 transitions. [2020-07-07 13:24:36,095 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-07 13:24:36,095 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 92 transitions. [2020-07-07 13:24:36,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-07-07 13:24:36,100 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:24:36,101 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:24:36,101 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-07-07 13:24:36,101 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:24:36,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:24:36,102 INFO L82 PathProgramCache]: Analyzing trace with hash 216981640, now seen corresponding path program 4 times [2020-07-07 13:24:36,102 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:24:36,102 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [628778128] [2020-07-07 13:24:36,103 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:24:36,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:24:36,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:24:36,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:24:36,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:24:36,304 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:24:36,304 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [628778128] [2020-07-07 13:24:36,304 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:24:36,304 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-07-07 13:24:36,305 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66106356] [2020-07-07 13:24:36,305 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-07-07 13:24:36,305 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:24:36,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-07-07 13:24:36,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-07-07 13:24:36,306 INFO L87 Difference]: Start difference. First operand 91 states and 92 transitions. Second operand 12 states. [2020-07-07 13:24:36,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:24:36,588 INFO L93 Difference]: Finished difference Result 144 states and 146 transitions. [2020-07-07 13:24:36,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-07-07 13:24:36,589 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 86 [2020-07-07 13:24:36,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:24:36,591 INFO L225 Difference]: With dead ends: 144 [2020-07-07 13:24:36,591 INFO L226 Difference]: Without dead ends: 109 [2020-07-07 13:24:36,596 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=125, Invalid=255, Unknown=0, NotChecked=0, Total=380 [2020-07-07 13:24:36,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-07-07 13:24:36,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 101. [2020-07-07 13:24:36,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-07-07 13:24:36,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 102 transitions. [2020-07-07 13:24:36,616 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 102 transitions. Word has length 86 [2020-07-07 13:24:36,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:24:36,616 INFO L479 AbstractCegarLoop]: Abstraction has 101 states and 102 transitions. [2020-07-07 13:24:36,617 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-07-07 13:24:36,617 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 102 transitions. [2020-07-07 13:24:36,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-07-07 13:24:36,618 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:24:36,618 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:24:36,618 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-07-07 13:24:36,619 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:24:36,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:24:36,619 INFO L82 PathProgramCache]: Analyzing trace with hash -1855081502, now seen corresponding path program 5 times [2020-07-07 13:24:36,619 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:24:36,620 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [381598304] [2020-07-07 13:24:36,620 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:24:36,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:24:36,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:24:36,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:24:36,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:24:36,859 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:24:36,860 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [381598304] [2020-07-07 13:24:36,860 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:24:36,860 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-07-07 13:24:36,860 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785870688] [2020-07-07 13:24:36,861 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-07-07 13:24:36,861 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:24:36,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-07-07 13:24:36,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2020-07-07 13:24:36,862 INFO L87 Difference]: Start difference. First operand 101 states and 102 transitions. Second operand 14 states. [2020-07-07 13:24:37,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:24:37,189 INFO L93 Difference]: Finished difference Result 154 states and 156 transitions. [2020-07-07 13:24:37,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-07-07 13:24:37,189 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 96 [2020-07-07 13:24:37,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:24:37,191 INFO L225 Difference]: With dead ends: 154 [2020-07-07 13:24:37,191 INFO L226 Difference]: Without dead ends: 119 [2020-07-07 13:24:37,192 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=180, Invalid=372, Unknown=0, NotChecked=0, Total=552 [2020-07-07 13:24:37,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-07-07 13:24:37,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 111. [2020-07-07 13:24:37,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-07-07 13:24:37,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 112 transitions. [2020-07-07 13:24:37,203 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 112 transitions. Word has length 96 [2020-07-07 13:24:37,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:24:37,204 INFO L479 AbstractCegarLoop]: Abstraction has 111 states and 112 transitions. [2020-07-07 13:24:37,204 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-07-07 13:24:37,204 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 112 transitions. [2020-07-07 13:24:37,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-07-07 13:24:37,205 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:24:37,206 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:24:37,206 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-07-07 13:24:37,206 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:24:37,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:24:37,207 INFO L82 PathProgramCache]: Analyzing trace with hash -400056644, now seen corresponding path program 6 times [2020-07-07 13:24:37,207 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:24:37,207 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [685439049] [2020-07-07 13:24:37,207 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:24:37,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:24:37,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:24:37,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:24:37,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:24:37,448 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:24:37,448 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [685439049] [2020-07-07 13:24:37,449 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:24:37,449 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-07-07 13:24:37,449 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587698207] [2020-07-07 13:24:37,449 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-07-07 13:24:37,450 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:24:37,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-07-07 13:24:37,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-07-07 13:24:37,451 INFO L87 Difference]: Start difference. First operand 111 states and 112 transitions. Second operand 16 states. [2020-07-07 13:24:37,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:24:37,849 INFO L93 Difference]: Finished difference Result 164 states and 166 transitions. [2020-07-07 13:24:37,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-07-07 13:24:37,849 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 106 [2020-07-07 13:24:37,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:24:37,850 INFO L225 Difference]: With dead ends: 164 [2020-07-07 13:24:37,851 INFO L226 Difference]: Without dead ends: 129 [2020-07-07 13:24:37,852 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=245, Invalid=511, Unknown=0, NotChecked=0, Total=756 [2020-07-07 13:24:37,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2020-07-07 13:24:37,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 121. [2020-07-07 13:24:37,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-07-07 13:24:37,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 122 transitions. [2020-07-07 13:24:37,862 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 122 transitions. Word has length 106 [2020-07-07 13:24:37,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:24:37,863 INFO L479 AbstractCegarLoop]: Abstraction has 121 states and 122 transitions. [2020-07-07 13:24:37,863 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-07-07 13:24:37,863 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 122 transitions. [2020-07-07 13:24:37,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-07-07 13:24:37,864 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:24:37,864 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:24:37,864 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-07-07 13:24:37,864 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:24:37,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:24:37,865 INFO L82 PathProgramCache]: Analyzing trace with hash -1044037354, now seen corresponding path program 7 times [2020-07-07 13:24:37,865 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:24:37,865 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [694622742] [2020-07-07 13:24:37,866 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:24:37,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:24:38,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:24:38,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:24:38,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:24:38,092 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:24:38,093 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [694622742] [2020-07-07 13:24:38,093 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:24:38,093 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2020-07-07 13:24:38,093 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238948647] [2020-07-07 13:24:38,094 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-07-07 13:24:38,094 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:24:38,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-07-07 13:24:38,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2020-07-07 13:24:38,095 INFO L87 Difference]: Start difference. First operand 121 states and 122 transitions. Second operand 18 states. [2020-07-07 13:24:38,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:24:38,571 INFO L93 Difference]: Finished difference Result 174 states and 176 transitions. [2020-07-07 13:24:38,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-07-07 13:24:38,571 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 116 [2020-07-07 13:24:38,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:24:38,574 INFO L225 Difference]: With dead ends: 174 [2020-07-07 13:24:38,574 INFO L226 Difference]: Without dead ends: 139 [2020-07-07 13:24:38,575 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=320, Invalid=672, Unknown=0, NotChecked=0, Total=992 [2020-07-07 13:24:38,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-07-07 13:24:38,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 131. [2020-07-07 13:24:38,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-07-07 13:24:38,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 132 transitions. [2020-07-07 13:24:38,594 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 132 transitions. Word has length 116 [2020-07-07 13:24:38,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:24:38,597 INFO L479 AbstractCegarLoop]: Abstraction has 131 states and 132 transitions. [2020-07-07 13:24:38,598 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-07-07 13:24:38,598 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 132 transitions. [2020-07-07 13:24:38,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-07-07 13:24:38,599 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:24:38,602 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:24:38,602 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-07-07 13:24:38,602 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:24:38,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:24:38,603 INFO L82 PathProgramCache]: Analyzing trace with hash 212286192, now seen corresponding path program 8 times [2020-07-07 13:24:38,603 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:24:38,603 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [328188768] [2020-07-07 13:24:38,603 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:24:38,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:24:38,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:24:38,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:24:38,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:24:38,837 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:24:38,837 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [328188768] [2020-07-07 13:24:38,838 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:24:38,838 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2020-07-07 13:24:38,838 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589688596] [2020-07-07 13:24:38,838 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-07-07 13:24:38,839 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:24:38,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-07-07 13:24:38,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2020-07-07 13:24:38,839 INFO L87 Difference]: Start difference. First operand 131 states and 132 transitions. Second operand 20 states. [2020-07-07 13:24:39,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:24:39,348 INFO L93 Difference]: Finished difference Result 184 states and 186 transitions. [2020-07-07 13:24:39,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-07-07 13:24:39,349 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 126 [2020-07-07 13:24:39,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:24:39,350 INFO L225 Difference]: With dead ends: 184 [2020-07-07 13:24:39,350 INFO L226 Difference]: Without dead ends: 149 [2020-07-07 13:24:39,351 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=405, Invalid=855, Unknown=0, NotChecked=0, Total=1260 [2020-07-07 13:24:39,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-07-07 13:24:39,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 141. [2020-07-07 13:24:39,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-07-07 13:24:39,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 142 transitions. [2020-07-07 13:24:39,362 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 142 transitions. Word has length 126 [2020-07-07 13:24:39,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:24:39,362 INFO L479 AbstractCegarLoop]: Abstraction has 141 states and 142 transitions. [2020-07-07 13:24:39,362 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-07-07 13:24:39,363 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 142 transitions. [2020-07-07 13:24:39,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-07-07 13:24:39,365 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:24:39,366 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:24:39,366 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-07-07 13:24:39,366 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:24:39,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:24:39,367 INFO L82 PathProgramCache]: Analyzing trace with hash 786836554, now seen corresponding path program 9 times [2020-07-07 13:24:39,367 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:24:39,367 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1908085793] [2020-07-07 13:24:39,367 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:24:39,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:24:39,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:24:39,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:24:39,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:24:39,668 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:24:39,669 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1908085793] [2020-07-07 13:24:39,669 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:24:39,669 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2020-07-07 13:24:39,670 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714726804] [2020-07-07 13:24:39,670 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-07-07 13:24:39,670 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:24:39,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-07-07 13:24:39,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=340, Unknown=0, NotChecked=0, Total=462 [2020-07-07 13:24:39,671 INFO L87 Difference]: Start difference. First operand 141 states and 142 transitions. Second operand 22 states. [2020-07-07 13:24:40,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:24:40,275 INFO L93 Difference]: Finished difference Result 186 states and 188 transitions. [2020-07-07 13:24:40,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-07-07 13:24:40,278 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 136 [2020-07-07 13:24:40,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:24:40,279 INFO L225 Difference]: With dead ends: 186 [2020-07-07 13:24:40,279 INFO L226 Difference]: Without dead ends: 151 [2020-07-07 13:24:40,281 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 242 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=500, Invalid=1060, Unknown=0, NotChecked=0, Total=1560 [2020-07-07 13:24:40,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2020-07-07 13:24:40,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2020-07-07 13:24:40,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2020-07-07 13:24:40,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 152 transitions. [2020-07-07 13:24:40,290 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 152 transitions. Word has length 136 [2020-07-07 13:24:40,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:24:40,291 INFO L479 AbstractCegarLoop]: Abstraction has 151 states and 152 transitions. [2020-07-07 13:24:40,291 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-07-07 13:24:40,291 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 152 transitions. [2020-07-07 13:24:40,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-07-07 13:24:40,293 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:24:40,293 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:24:40,293 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-07-07 13:24:40,293 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:24:40,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:24:40,294 INFO L82 PathProgramCache]: Analyzing trace with hash -1068321500, now seen corresponding path program 10 times [2020-07-07 13:24:40,294 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:24:40,295 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [196774685] [2020-07-07 13:24:40,295 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:24:40,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:24:41,401 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 24 [2020-07-07 13:24:42,468 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 25 [2020-07-07 13:24:42,961 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 45 [2020-07-07 13:24:43,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:24:43,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:24:43,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:24:43,381 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:24:43,381 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [196774685] [2020-07-07 13:24:43,381 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:24:43,381 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2020-07-07 13:24:43,382 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232580073] [2020-07-07 13:24:43,382 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-07-07 13:24:43,382 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:24:43,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-07-07 13:24:43,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=929, Unknown=0, NotChecked=0, Total=1056 [2020-07-07 13:24:43,383 INFO L87 Difference]: Start difference. First operand 151 states and 152 transitions. Second operand 33 states. [2020-07-07 13:24:46,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:24:46,103 INFO L93 Difference]: Finished difference Result 172 states and 173 transitions. [2020-07-07 13:24:46,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-07-07 13:24:46,103 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 146 [2020-07-07 13:24:46,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:24:46,105 INFO L225 Difference]: With dead ends: 172 [2020-07-07 13:24:46,105 INFO L226 Difference]: Without dead ends: 156 [2020-07-07 13:24:46,107 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1144 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=654, Invalid=4176, Unknown=0, NotChecked=0, Total=4830 [2020-07-07 13:24:46,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2020-07-07 13:24:46,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 153. [2020-07-07 13:24:46,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-07-07 13:24:46,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 154 transitions. [2020-07-07 13:24:46,119 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 154 transitions. Word has length 146 [2020-07-07 13:24:46,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:24:46,120 INFO L479 AbstractCegarLoop]: Abstraction has 153 states and 154 transitions. [2020-07-07 13:24:46,120 INFO L480 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-07-07 13:24:46,120 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 154 transitions. [2020-07-07 13:24:46,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-07-07 13:24:46,122 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:24:46,122 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 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] [2020-07-07 13:24:46,123 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-07-07 13:24:46,123 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:24:46,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:24:46,123 INFO L82 PathProgramCache]: Analyzing trace with hash 1165083452, now seen corresponding path program 1 times [2020-07-07 13:24:46,124 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:24:46,124 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [374359142] [2020-07-07 13:24:46,124 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:24:46,134 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-07-07 13:24:46,135 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.lib.acceleratedinterpolation.AcceleratedInterpolation.generateMetaTrace(AcceleratedInterpolation.java:442) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.acceleratedInterpolationCore(AcceleratedInterpolation.java:277) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.(AcceleratedInterpolation.java:184) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModulePreferences.construct(IpTcStrategyModulePreferences.java:144) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:242) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:166) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:508) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:436) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:370) 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:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) 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:317) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2020-07-07 13:24:46,143 INFO L168 Benchmark]: Toolchain (without parser) took 13110.46 ms. Allocated memory was 139.5 MB in the beginning and 343.9 MB in the end (delta: 204.5 MB). Free memory was 102.9 MB in the beginning and 224.2 MB in the end (delta: -121.3 MB). Peak memory consumption was 83.2 MB. Max. memory is 7.1 GB. [2020-07-07 13:24:46,144 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 139.5 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2020-07-07 13:24:46,146 INFO L168 Benchmark]: CACSL2BoogieTranslator took 414.90 ms. Allocated memory was 139.5 MB in the beginning and 205.0 MB in the end (delta: 65.5 MB). Free memory was 102.7 MB in the beginning and 184.1 MB in the end (delta: -81.4 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. [2020-07-07 13:24:46,146 INFO L168 Benchmark]: Boogie Preprocessor took 41.09 ms. Allocated memory is still 205.0 MB. Free memory was 184.1 MB in the beginning and 181.8 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. [2020-07-07 13:24:46,148 INFO L168 Benchmark]: RCFGBuilder took 406.89 ms. Allocated memory is still 205.0 MB. Free memory was 181.8 MB in the beginning and 159.9 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. [2020-07-07 13:24:46,156 INFO L168 Benchmark]: TraceAbstraction took 12242.53 ms. Allocated memory was 205.0 MB in the beginning and 343.9 MB in the end (delta: 138.9 MB). Free memory was 159.9 MB in the beginning and 224.2 MB in the end (delta: -64.3 MB). Peak memory consumption was 74.6 MB. Max. memory is 7.1 GB. [2020-07-07 13:24:46,163 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 139.5 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 414.90 ms. Allocated memory was 139.5 MB in the beginning and 205.0 MB in the end (delta: 65.5 MB). Free memory was 102.7 MB in the beginning and 184.1 MB in the end (delta: -81.4 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 41.09 ms. Allocated memory is still 205.0 MB. Free memory was 184.1 MB in the beginning and 181.8 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 406.89 ms. Allocated memory is still 205.0 MB. Free memory was 181.8 MB in the beginning and 159.9 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 12242.53 ms. Allocated memory was 205.0 MB in the beginning and 343.9 MB in the end (delta: 138.9 MB). Free memory was 159.9 MB in the beginning and 224.2 MB in the end (delta: -64.3 MB). Peak memory consumption was 74.6 MB. Max. memory is 7.1 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.lib.acceleratedinterpolation.AcceleratedInterpolation.generateMetaTrace(AcceleratedInterpolation.java:442) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...