/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/loop-lit/gsv2008.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 22:01:24,963 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 22:01:24,966 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 22:01:25,025 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-10-23 22:01:25,113 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 22:01:25,114 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 22:01:25,127 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 22:01:25,128 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 22:01:25,150 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 22:01:25,151 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 22:01:25,155 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 22:01:25,155 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 22:01:25,156 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 22:01:25,156 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 22:01:25,156 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 22:01:25,156 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 22:01:25,156 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 22:01:25,157 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 22:01:25,158 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 22:01:25,158 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 22:01:25,158 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 22:01:25,159 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 22:01:25,159 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 22:01:25,159 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-23 22:01:25,159 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 22:01:25,160 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 22:01:25,160 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 22:01:25,160 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 22:01:25,160 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-23 22:01:25,160 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 22:01:25,161 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 22:01:25,528 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 22:01:25,578 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 22:01:25,581 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 22:01:25,582 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 22:01:25,583 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 22:01:25,584 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/gsv2008.i [2020-10-23 22:01:25,649 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c591012b4/3f0ec35390af42e68caaedcdc322c3f7/FLAGbf18c4f62 [2020-10-23 22:01:26,331 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 22:01:26,332 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/gsv2008.i [2020-10-23 22:01:26,339 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c591012b4/3f0ec35390af42e68caaedcdc322c3f7/FLAGbf18c4f62 [2020-10-23 22:01:26,704 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c591012b4/3f0ec35390af42e68caaedcdc322c3f7 [2020-10-23 22:01:26,706 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 22:01:26,713 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 22:01:26,715 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 22:01:26,715 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 22:01:26,720 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 22:01:26,721 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 10:01:26" (1/1) ... [2020-10-23 22:01:26,725 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7532574 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:01:26, skipping insertion in model container [2020-10-23 22:01:26,725 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 10:01:26" (1/1) ... [2020-10-23 22:01:26,734 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 22:01:26,751 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 22:01:26,909 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 22:01:26,918 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 22:01:26,936 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 22:01:26,952 INFO L208 MainTranslator]: Completed translation [2020-10-23 22:01:26,952 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:01:26 WrapperNode [2020-10-23 22:01:26,953 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 22:01:26,954 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 22:01:26,954 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 22:01:26,954 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 22:01:26,967 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:01:26" (1/1) ... [2020-10-23 22:01:26,967 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:01:26" (1/1) ... [2020-10-23 22:01:26,974 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:01:26" (1/1) ... [2020-10-23 22:01:26,975 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:01:26" (1/1) ... [2020-10-23 22:01:26,980 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:01:26" (1/1) ... [2020-10-23 22:01:26,985 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:01:26" (1/1) ... [2020-10-23 22:01:26,986 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:01:26" (1/1) ... [2020-10-23 22:01:26,988 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 22:01:26,989 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 22:01:26,989 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 22:01:26,990 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 22:01:26,990 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:01:26" (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 22:01:27,056 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 22:01:27,056 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 22:01:27,056 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 22:01:27,056 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-23 22:01:27,056 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-23 22:01:27,057 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 22:01:27,057 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 22:01:27,057 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 22:01:27,057 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-23 22:01:27,057 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-23 22:01:27,058 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 22:01:27,058 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 22:01:27,058 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-23 22:01:27,058 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-23 22:01:27,058 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-23 22:01:27,058 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 22:01:27,059 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 22:01:27,059 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 22:01:27,059 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 22:01:27,059 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 22:01:27,059 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 22:01:27,059 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 22:01:27,319 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 22:01:27,319 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-23 22:01:27,321 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 10:01:27 BoogieIcfgContainer [2020-10-23 22:01:27,321 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 22:01:27,324 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 22:01:27,324 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 22:01:27,328 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 22:01:27,329 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 10:01:26" (1/3) ... [2020-10-23 22:01:27,330 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cb1828e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 10:01:27, skipping insertion in model container [2020-10-23 22:01:27,330 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:01:26" (2/3) ... [2020-10-23 22:01:27,330 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cb1828e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 10:01:27, skipping insertion in model container [2020-10-23 22:01:27,331 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 10:01:27" (3/3) ... [2020-10-23 22:01:27,333 INFO L111 eAbstractionObserver]: Analyzing ICFG gsv2008.i [2020-10-23 22:01:27,348 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-23 22:01:27,354 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 22:01:27,372 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 22:01:27,401 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 22:01:27,401 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 22:01:27,401 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-10-23 22:01:27,402 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 22:01:27,402 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 22:01:27,402 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 22:01:27,402 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 22:01:27,402 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 22:01:27,426 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2020-10-23 22:01:27,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-23 22:01:27,446 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 22:01:27,450 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] [2020-10-23 22:01:27,451 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 22:01:27,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 22:01:27,472 INFO L82 PathProgramCache]: Analyzing trace with hash -451165637, now seen corresponding path program 1 times [2020-10-23 22:01:27,481 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 22:01:27,482 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [705579767] [2020-10-23 22:01:27,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 22:01:27,602 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 22:01:27,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:01:27,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 22:01:27,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:01:27,930 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 22:01:27,932 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [705579767] [2020-10-23 22:01:27,934 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 22:01:27,934 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-23 22:01:27,934 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889868348] [2020-10-23 22:01:27,939 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-23 22:01:27,940 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 22:01:27,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-23 22:01:27,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-23 22:01:27,957 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 4 states. [2020-10-23 22:01:28,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 22:01:28,191 INFO L93 Difference]: Finished difference Result 60 states and 69 transitions. [2020-10-23 22:01:28,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-23 22:01:28,193 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-10-23 22:01:28,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 22:01:28,213 INFO L225 Difference]: With dead ends: 60 [2020-10-23 22:01:28,213 INFO L226 Difference]: Without dead ends: 32 [2020-10-23 22:01:28,218 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-23 22:01:28,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-23 22:01:28,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2020-10-23 22:01:28,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-23 22:01:28,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2020-10-23 22:01:28,297 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 25 [2020-10-23 22:01:28,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 22:01:28,299 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2020-10-23 22:01:28,299 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-23 22:01:28,299 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2020-10-23 22:01:28,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-23 22:01:28,301 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 22:01:28,301 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 22:01:28,302 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 22:01:28,302 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 22:01:28,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 22:01:28,305 INFO L82 PathProgramCache]: Analyzing trace with hash 13853325, now seen corresponding path program 1 times [2020-10-23 22:01:28,306 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 22:01:28,307 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1946987244] [2020-10-23 22:01:28,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 22:01:28,376 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 22:01:28,385 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 22:01:28,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:01:28,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 22:01:28,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:01:28,627 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 22:01:28,628 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1946987244] [2020-10-23 22:01:28,628 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 22:01:28,628 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-23 22:01:28,629 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549159509] [2020-10-23 22:01:28,629 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-23 22:01:28,630 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 22:01:28,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-23 22:01:28,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-23 22:01:28,631 INFO L87 Difference]: Start difference. First operand 31 states and 31 transitions. Second operand 10 states. [2020-10-23 22:01:29,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 22:01:29,039 INFO L93 Difference]: Finished difference Result 44 states and 44 transitions. [2020-10-23 22:01:29,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-23 22:01:29,039 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 30 [2020-10-23 22:01:29,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 22:01:29,041 INFO L225 Difference]: With dead ends: 44 [2020-10-23 22:01:29,041 INFO L226 Difference]: Without dead ends: 37 [2020-10-23 22:01:29,043 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2020-10-23 22:01:29,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-10-23 22:01:29,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 36. [2020-10-23 22:01:29,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-23 22:01:29,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 36 transitions. [2020-10-23 22:01:29,056 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 36 transitions. Word has length 30 [2020-10-23 22:01:29,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 22:01:29,057 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 36 transitions. [2020-10-23 22:01:29,057 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-23 22:01:29,057 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 36 transitions. [2020-10-23 22:01:29,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-23 22:01:29,058 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 22:01:29,059 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-23 22:01:29,059 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 22:01:29,059 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 22:01:29,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 22:01:29,060 INFO L82 PathProgramCache]: Analyzing trace with hash 852305275, now seen corresponding path program 2 times [2020-10-23 22:01:29,060 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 22:01:29,060 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [531197238] [2020-10-23 22:01:29,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 22:01:29,161 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 22:01:29,163 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 22:01:29,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:01:29,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 22:01:29,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:01:29,371 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 22:01:29,372 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [531197238] [2020-10-23 22:01:29,373 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 22:01:29,373 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-23 22:01:29,373 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092685403] [2020-10-23 22:01:29,374 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-23 22:01:29,374 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 22:01:29,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-23 22:01:29,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-10-23 22:01:29,378 INFO L87 Difference]: Start difference. First operand 36 states and 36 transitions. Second operand 13 states. [2020-10-23 22:01:29,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 22:01:29,978 INFO L93 Difference]: Finished difference Result 49 states and 49 transitions. [2020-10-23 22:01:29,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-23 22:01:29,979 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 35 [2020-10-23 22:01:29,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 22:01:29,980 INFO L225 Difference]: With dead ends: 49 [2020-10-23 22:01:29,980 INFO L226 Difference]: Without dead ends: 42 [2020-10-23 22:01:29,981 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=97, Invalid=503, Unknown=0, NotChecked=0, Total=600 [2020-10-23 22:01:29,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-23 22:01:29,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2020-10-23 22:01:29,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-23 22:01:29,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 41 transitions. [2020-10-23 22:01:29,993 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 41 transitions. Word has length 35 [2020-10-23 22:01:29,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 22:01:29,994 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 41 transitions. [2020-10-23 22:01:29,994 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-23 22:01:29,994 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 41 transitions. [2020-10-23 22:01:29,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-23 22:01:29,995 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 22:01:29,996 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-23 22:01:29,996 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-23 22:01:29,996 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 22:01:29,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 22:01:29,997 INFO L82 PathProgramCache]: Analyzing trace with hash -155318451, now seen corresponding path program 3 times [2020-10-23 22:01:29,997 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 22:01:29,997 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2090780890] [2020-10-23 22:01:29,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 22:01:30,087 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 22:01:30,089 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 22:01:30,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:01:30,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 22:01:30,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:01:30,359 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 22:01:30,360 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2090780890] [2020-10-23 22:01:30,360 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 22:01:30,360 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-10-23 22:01:30,361 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356769880] [2020-10-23 22:01:30,364 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-23 22:01:30,365 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 22:01:30,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-23 22:01:30,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2020-10-23 22:01:30,366 INFO L87 Difference]: Start difference. First operand 41 states and 41 transitions. Second operand 16 states. [2020-10-23 22:01:31,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 22:01:31,223 INFO L93 Difference]: Finished difference Result 54 states and 54 transitions. [2020-10-23 22:01:31,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-23 22:01:31,224 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 40 [2020-10-23 22:01:31,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 22:01:31,229 INFO L225 Difference]: With dead ends: 54 [2020-10-23 22:01:31,229 INFO L226 Difference]: Without dead ends: 47 [2020-10-23 22:01:31,230 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=129, Invalid=863, Unknown=0, NotChecked=0, Total=992 [2020-10-23 22:01:31,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-10-23 22:01:31,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 46. [2020-10-23 22:01:31,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-23 22:01:31,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 46 transitions. [2020-10-23 22:01:31,256 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 46 transitions. Word has length 40 [2020-10-23 22:01:31,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 22:01:31,259 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 46 transitions. [2020-10-23 22:01:31,259 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-23 22:01:31,259 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 46 transitions. [2020-10-23 22:01:31,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-23 22:01:31,262 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 22:01:31,262 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-23 22:01:31,262 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-23 22:01:31,262 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 22:01:31,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 22:01:31,263 INFO L82 PathProgramCache]: Analyzing trace with hash -2121566021, now seen corresponding path program 4 times [2020-10-23 22:01:31,263 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 22:01:31,264 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [712897241] [2020-10-23 22:01:31,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 22:01:31,365 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 22:01:31,367 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 22:01:31,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:01:31,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 22:01:31,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:01:31,667 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 22:01:31,668 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [712897241] [2020-10-23 22:01:31,668 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 22:01:31,668 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2020-10-23 22:01:31,668 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705972496] [2020-10-23 22:01:31,669 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-23 22:01:31,669 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 22:01:31,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-23 22:01:31,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2020-10-23 22:01:31,670 INFO L87 Difference]: Start difference. First operand 46 states and 46 transitions. Second operand 19 states. [2020-10-23 22:01:32,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 22:01:32,626 INFO L93 Difference]: Finished difference Result 59 states and 59 transitions. [2020-10-23 22:01:32,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-23 22:01:32,626 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 45 [2020-10-23 22:01:32,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 22:01:32,628 INFO L225 Difference]: With dead ends: 59 [2020-10-23 22:01:32,628 INFO L226 Difference]: Without dead ends: 52 [2020-10-23 22:01:32,629 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 268 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=161, Invalid=1321, Unknown=0, NotChecked=0, Total=1482 [2020-10-23 22:01:32,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-23 22:01:32,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 51. [2020-10-23 22:01:32,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-23 22:01:32,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 51 transitions. [2020-10-23 22:01:32,656 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 51 transitions. Word has length 45 [2020-10-23 22:01:32,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 22:01:32,657 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 51 transitions. [2020-10-23 22:01:32,657 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-23 22:01:32,657 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 51 transitions. [2020-10-23 22:01:32,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-23 22:01:32,658 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 22:01:32,658 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-23 22:01:32,658 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-23 22:01:32,658 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 22:01:32,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 22:01:32,659 INFO L82 PathProgramCache]: Analyzing trace with hash 1043446797, now seen corresponding path program 5 times [2020-10-23 22:01:32,659 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 22:01:32,660 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [450853551] [2020-10-23 22:01:32,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 22:01:32,736 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 22:01:32,738 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 22:01:32,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:01:33,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 22:01:33,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:01:33,086 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 22:01:33,087 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [450853551] [2020-10-23 22:01:33,087 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 22:01:33,087 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2020-10-23 22:01:33,088 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109684530] [2020-10-23 22:01:33,088 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-23 22:01:33,088 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 22:01:33,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-23 22:01:33,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=416, Unknown=0, NotChecked=0, Total=462 [2020-10-23 22:01:33,090 INFO L87 Difference]: Start difference. First operand 51 states and 51 transitions. Second operand 22 states. [2020-10-23 22:01:34,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 22:01:34,289 INFO L93 Difference]: Finished difference Result 64 states and 64 transitions. [2020-10-23 22:01:34,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-23 22:01:34,291 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 50 [2020-10-23 22:01:34,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 22:01:34,292 INFO L225 Difference]: With dead ends: 64 [2020-10-23 22:01:34,293 INFO L226 Difference]: Without dead ends: 57 [2020-10-23 22:01:34,296 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 402 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=193, Invalid=1877, Unknown=0, NotChecked=0, Total=2070 [2020-10-23 22:01:34,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-10-23 22:01:34,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 56. [2020-10-23 22:01:34,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-23 22:01:34,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 56 transitions. [2020-10-23 22:01:34,322 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 56 transitions. Word has length 50 [2020-10-23 22:01:34,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 22:01:34,323 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 56 transitions. [2020-10-23 22:01:34,323 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-23 22:01:34,323 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 56 transitions. [2020-10-23 22:01:34,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-23 22:01:34,328 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 22:01:34,330 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-23 22:01:34,330 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-23 22:01:34,331 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 22:01:34,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 22:01:34,331 INFO L82 PathProgramCache]: Analyzing trace with hash 1508555771, now seen corresponding path program 6 times [2020-10-23 22:01:34,332 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 22:01:34,332 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2068518948] [2020-10-23 22:01:34,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 22:01:34,415 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 22:01:34,417 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 22:01:34,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:01:34,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 22:01:34,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:01:34,846 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 22:01:34,846 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2068518948] [2020-10-23 22:01:34,847 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 22:01:34,847 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2020-10-23 22:01:34,847 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326367987] [2020-10-23 22:01:34,848 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-23 22:01:34,848 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 22:01:34,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-23 22:01:34,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=547, Unknown=0, NotChecked=0, Total=600 [2020-10-23 22:01:34,850 INFO L87 Difference]: Start difference. First operand 56 states and 56 transitions. Second operand 25 states. [2020-10-23 22:01:36,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 22:01:36,423 INFO L93 Difference]: Finished difference Result 69 states and 69 transitions. [2020-10-23 22:01:36,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-23 22:01:36,424 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 55 [2020-10-23 22:01:36,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 22:01:36,425 INFO L225 Difference]: With dead ends: 69 [2020-10-23 22:01:36,425 INFO L226 Difference]: Without dead ends: 62 [2020-10-23 22:01:36,431 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 592 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=234, Invalid=2628, Unknown=0, NotChecked=0, Total=2862 [2020-10-23 22:01:36,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-10-23 22:01:36,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 61. [2020-10-23 22:01:36,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-23 22:01:36,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 61 transitions. [2020-10-23 22:01:36,456 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 61 transitions. Word has length 55 [2020-10-23 22:01:36,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 22:01:36,458 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 61 transitions. [2020-10-23 22:01:36,458 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-23 22:01:36,458 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 61 transitions. [2020-10-23 22:01:36,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-23 22:01:36,460 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 22:01:36,460 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-23 22:01:36,462 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-23 22:01:36,463 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 22:01:36,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 22:01:36,463 INFO L82 PathProgramCache]: Analyzing trace with hash -1961197363, now seen corresponding path program 7 times [2020-10-23 22:01:36,464 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 22:01:36,465 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1872398255] [2020-10-23 22:01:36,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 22:01:36,552 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 22:01:36,556 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 22:01:36,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:01:37,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 22:01:37,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:01:37,148 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 22:01:37,149 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1872398255] [2020-10-23 22:01:37,149 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 22:01:37,149 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2020-10-23 22:01:37,149 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911362149] [2020-10-23 22:01:37,150 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-23 22:01:37,150 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 22:01:37,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-23 22:01:37,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=696, Unknown=0, NotChecked=0, Total=756 [2020-10-23 22:01:37,151 INFO L87 Difference]: Start difference. First operand 61 states and 61 transitions. Second operand 28 states. [2020-10-23 22:01:39,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 22:01:39,011 INFO L93 Difference]: Finished difference Result 74 states and 74 transitions. [2020-10-23 22:01:39,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-23 22:01:39,012 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 60 [2020-10-23 22:01:39,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 22:01:39,013 INFO L225 Difference]: With dead ends: 74 [2020-10-23 22:01:39,013 INFO L226 Difference]: Without dead ends: 67 [2020-10-23 22:01:39,015 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 820 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=275, Invalid=3507, Unknown=0, NotChecked=0, Total=3782 [2020-10-23 22:01:39,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-10-23 22:01:39,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 66. [2020-10-23 22:01:39,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-23 22:01:39,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 66 transitions. [2020-10-23 22:01:39,030 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 66 transitions. Word has length 60 [2020-10-23 22:01:39,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 22:01:39,030 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 66 transitions. [2020-10-23 22:01:39,030 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-23 22:01:39,030 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 66 transitions. [2020-10-23 22:01:39,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-23 22:01:39,031 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 22:01:39,031 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-23 22:01:39,032 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-23 22:01:39,032 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 22:01:39,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 22:01:39,032 INFO L82 PathProgramCache]: Analyzing trace with hash -1686180037, now seen corresponding path program 8 times [2020-10-23 22:01:39,032 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 22:01:39,033 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [255117336] [2020-10-23 22:01:39,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 22:01:39,111 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 22:01:39,113 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 22:01:39,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:01:39,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 22:01:39,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:01:39,713 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 22:01:39,713 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [255117336] [2020-10-23 22:01:39,713 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 22:01:39,714 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31 [2020-10-23 22:01:39,714 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875722533] [2020-10-23 22:01:39,714 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-23 22:01:39,715 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 22:01:39,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-23 22:01:39,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=863, Unknown=0, NotChecked=0, Total=930 [2020-10-23 22:01:39,716 INFO L87 Difference]: Start difference. First operand 66 states and 66 transitions. Second operand 31 states. [2020-10-23 22:01:42,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 22:01:42,066 INFO L93 Difference]: Finished difference Result 79 states and 79 transitions. [2020-10-23 22:01:42,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-10-23 22:01:42,073 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 65 [2020-10-23 22:01:42,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 22:01:42,075 INFO L225 Difference]: With dead ends: 79 [2020-10-23 22:01:42,075 INFO L226 Difference]: Without dead ends: 72 [2020-10-23 22:01:42,077 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1084 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=318, Invalid=4512, Unknown=0, NotChecked=0, Total=4830 [2020-10-23 22:01:42,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-23 22:01:42,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 71. [2020-10-23 22:01:42,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-23 22:01:42,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 71 transitions. [2020-10-23 22:01:42,091 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 71 transitions. Word has length 65 [2020-10-23 22:01:42,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 22:01:42,092 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 71 transitions. [2020-10-23 22:01:42,092 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-23 22:01:42,092 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 71 transitions. [2020-10-23 22:01:42,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-23 22:01:42,093 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 22:01:42,093 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-23 22:01:42,093 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-23 22:01:42,093 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 22:01:42,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 22:01:42,094 INFO L82 PathProgramCache]: Analyzing trace with hash -1704700531, now seen corresponding path program 9 times [2020-10-23 22:01:42,094 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 22:01:42,094 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1283955949] [2020-10-23 22:01:42,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 22:01:42,186 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 22:01:42,188 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 22:01:42,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:01:42,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 22:01:42,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:01:42,963 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 22:01:42,964 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1283955949] [2020-10-23 22:01:42,964 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 22:01:42,964 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [34] imperfect sequences [] total 34 [2020-10-23 22:01:42,964 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869016133] [2020-10-23 22:01:42,965 INFO L461 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-10-23 22:01:42,965 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 22:01:42,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-10-23 22:01:42,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=1048, Unknown=0, NotChecked=0, Total=1122 [2020-10-23 22:01:42,966 INFO L87 Difference]: Start difference. First operand 71 states and 71 transitions. Second operand 34 states. [2020-10-23 22:01:45,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 22:01:45,750 INFO L93 Difference]: Finished difference Result 84 states and 84 transitions. [2020-10-23 22:01:45,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-10-23 22:01:45,751 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 70 [2020-10-23 22:01:45,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 22:01:45,752 INFO L225 Difference]: With dead ends: 84 [2020-10-23 22:01:45,752 INFO L226 Difference]: Without dead ends: 77 [2020-10-23 22:01:45,754 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1384 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=363, Invalid=5643, Unknown=0, NotChecked=0, Total=6006 [2020-10-23 22:01:45,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-10-23 22:01:45,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 76. [2020-10-23 22:01:45,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-10-23 22:01:45,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 76 transitions. [2020-10-23 22:01:45,769 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 76 transitions. Word has length 70 [2020-10-23 22:01:45,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 22:01:45,771 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 76 transitions. [2020-10-23 22:01:45,771 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-10-23 22:01:45,771 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 76 transitions. [2020-10-23 22:01:45,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-23 22:01:45,774 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 22:01:45,774 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-23 22:01:45,776 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-23 22:01:45,776 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 22:01:45,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 22:01:45,777 INFO L82 PathProgramCache]: Analyzing trace with hash -1126428037, now seen corresponding path program 10 times [2020-10-23 22:01:45,777 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 22:01:45,777 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [981154220] [2020-10-23 22:01:45,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 22:01:45,864 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 22:01:45,866 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 22:01:45,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:01:46,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 22:01:46,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:01:46,771 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 22:01:46,772 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [981154220] [2020-10-23 22:01:46,772 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 22:01:46,772 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [37] imperfect sequences [] total 37 [2020-10-23 22:01:46,772 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060384281] [2020-10-23 22:01:46,773 INFO L461 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-10-23 22:01:46,773 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 22:01:46,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-10-23 22:01:46,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=1251, Unknown=0, NotChecked=0, Total=1332 [2020-10-23 22:01:46,774 INFO L87 Difference]: Start difference. First operand 76 states and 76 transitions. Second operand 37 states. [2020-10-23 22:01:50,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 22:01:50,095 INFO L93 Difference]: Finished difference Result 77 states and 77 transitions. [2020-10-23 22:01:50,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2020-10-23 22:01:50,095 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 75 [2020-10-23 22:01:50,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 22:01:50,095 INFO L225 Difference]: With dead ends: 77 [2020-10-23 22:01:50,096 INFO L226 Difference]: Without dead ends: 0 [2020-10-23 22:01:50,099 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1718 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=413, Invalid=6897, Unknown=0, NotChecked=0, Total=7310 [2020-10-23 22:01:50,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-23 22:01:50,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-23 22:01:50,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-23 22:01:50,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-23 22:01:50,100 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 75 [2020-10-23 22:01:50,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 22:01:50,100 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-23 22:01:50,100 INFO L482 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-10-23 22:01:50,100 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-23 22:01:50,100 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-23 22:01:50,101 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-23 22:01:50,103 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-23 22:01:50,426 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 100 [2020-10-23 22:01:50,640 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 37 [2020-10-23 22:01:50,825 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 59 [2020-10-23 22:01:51,005 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 49 [2020-10-23 22:01:51,116 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 31 [2020-10-23 22:01:51,327 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 40 [2020-10-23 22:01:51,334 INFO L277 CegarLoopResult]: At program point reach_errorEXIT(line 12) the Hoare annotation is: true [2020-10-23 22:01:51,334 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 12) the Hoare annotation is: true [2020-10-23 22:01:51,335 INFO L277 CegarLoopResult]: At program point L12-1(line 12) the Hoare annotation is: true [2020-10-23 22:01:51,335 INFO L277 CegarLoopResult]: At program point L12-2(line 12) the Hoare annotation is: true [2020-10-23 22:01:51,335 INFO L277 CegarLoopResult]: At program point L12-3(line 12) the Hoare annotation is: true [2020-10-23 22:01:51,335 INFO L277 CegarLoopResult]: At program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) the Hoare annotation is: true [2020-10-23 22:01:51,335 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-23 22:01:51,335 INFO L277 CegarLoopResult]: At program point L-1-1(line -1) the Hoare annotation is: true [2020-10-23 22:01:51,336 INFO L277 CegarLoopResult]: At program point ULTIMATE.initFINAL(line 12) the Hoare annotation is: true [2020-10-23 22:01:51,336 INFO L277 CegarLoopResult]: At program point L12(line 12) the Hoare annotation is: true [2020-10-23 22:01:51,336 INFO L277 CegarLoopResult]: At program point L12-1(line 12) the Hoare annotation is: true [2020-10-23 22:01:51,336 INFO L277 CegarLoopResult]: At program point L12-2(line 12) the Hoare annotation is: true [2020-10-23 22:01:51,336 INFO L270 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string0.offset| |old(#t~string0.offset)|) (= |old(#length)| |#length|) (= |#t~string1.base| |old(#t~string1.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string0.base| |old(#t~string0.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|) (= |#t~string1.offset| |old(#t~string1.offset)|)) [2020-10-23 22:01:51,336 INFO L277 CegarLoopResult]: At program point L12-3(line 12) the Hoare annotation is: true [2020-10-23 22:01:51,337 INFO L277 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2020-10-23 22:01:51,337 INFO L277 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2020-10-23 22:01:51,337 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-23 22:01:51,338 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-23 22:01:51,338 INFO L277 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2020-10-23 22:01:51,338 INFO L274 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-10-23 22:01:51,339 INFO L274 CegarLoopResult]: For program point L15-1(line 15) no Hoare annotation was computed. [2020-10-23 22:01:51,339 INFO L274 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 14 16) no Hoare annotation was computed. [2020-10-23 22:01:51,339 INFO L274 CegarLoopResult]: For program point L15-3(lines 14 16) no Hoare annotation was computed. [2020-10-23 22:01:51,339 INFO L274 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 14 16) no Hoare annotation was computed. [2020-10-23 22:01:51,339 INFO L277 CegarLoopResult]: At program point L33(line 33) the Hoare annotation is: true [2020-10-23 22:01:51,339 INFO L270 CegarLoopResult]: At program point L31(line 31) the Hoare annotation is: (or (<= (+ main_~x~0 95) (* 10 main_~y~0)) (<= (+ main_~x~0 50) main_~y~0) (<= (+ main_~x~0 56) (* 4 main_~y~0)) (<= (+ main_~x~0 65) (* 6 main_~y~0)) (<= (+ main_~x~0 53) (* 3 main_~y~0)) (<= (+ main_~x~0 78) (* 8 main_~y~0))) [2020-10-23 22:01:51,339 INFO L270 CegarLoopResult]: At program point L31-1(line 31) the Hoare annotation is: (or (let ((.cse0 (+ main_~x~0 53))) (and (<= .cse0 (* 3 |main_#t~post4|)) (<= .cse0 (* 3 main_~y~0)))) (let ((.cse1 (+ main_~x~0 95))) (and (<= .cse1 (* 10 main_~y~0)) (<= .cse1 (* 10 |main_#t~post4|)))) (let ((.cse2 (+ main_~x~0 71))) (and (<= .cse2 (* 7 main_~y~0)) (<= .cse2 (* 7 |main_#t~post4|)))) (let ((.cse3 (+ main_~x~0 50))) (and (<= .cse3 main_~y~0) (<= .cse3 |main_#t~post4|))) (let ((.cse4 (+ main_~x~0 60))) (and (<= .cse4 (* 5 |main_#t~post4|)) (<= .cse4 (* 5 main_~y~0)))) (let ((.cse5 (+ main_~x~0 86))) (and (<= .cse5 (* 9 main_~y~0)) (<= .cse5 (* 9 |main_#t~post4|))))) [2020-10-23 22:01:51,340 INFO L270 CegarLoopResult]: At program point L31-2(line 31) the Hoare annotation is: (let ((.cse0 (+ main_~x~0 51))) (or (and (<= (+ main_~x~0 71) (* 6 main_~y~0)) (<= (+ main_~x~0 65) (* 6 |main_#t~post4|))) (and (<= (+ main_~x~0 105) (* 10 main_~y~0)) (<= (+ main_~x~0 95) (* 10 |main_#t~post4|))) (and (<= (+ main_~x~0 78) (* 8 |main_#t~post4|)) (<= (+ main_~x~0 86) (* 8 main_~y~0))) (and (<= .cse0 main_~y~0) (<= (+ main_~x~0 50) |main_#t~post4|)) (and (<= (+ main_~x~0 56) (* 4 |main_#t~post4|)) (<= (+ main_~x~0 60) (* 4 main_~y~0))) (and (<= (+ main_~x~0 53) (* 2 main_~y~0)) (<= .cse0 (* 2 |main_#t~post4|))))) [2020-10-23 22:01:51,348 INFO L270 CegarLoopResult]: At program point L27(line 27) the Hoare annotation is: (<= (+ main_~x~0 50) 0) [2020-10-23 22:01:51,349 INFO L270 CegarLoopResult]: At program point L29-2(lines 29 32) the Hoare annotation is: (or (<= (+ main_~x~0 53) (* 2 main_~y~0)) (<= (+ main_~x~0 65) (* 5 main_~y~0)) (<= (+ main_~x~0 50) 0) (<= (+ main_~x~0 56) (* 3 main_~y~0)) (<= (+ main_~x~0 105) (* 10 main_~y~0)) (<= (+ main_~x~0 95) (* 9 main_~y~0)) (<= (+ main_~x~0 78) (* 7 main_~y~0))) [2020-10-23 22:01:51,349 INFO L270 CegarLoopResult]: At program point L27-1(line 27) the Hoare annotation is: (<= (+ main_~x~0 50) 0) [2020-10-23 22:01:51,349 INFO L270 CegarLoopResult]: At program point L29-3(lines 29 32) the Hoare annotation is: (and (<= 11 main_~y~0) (<= (+ main_~x~0 105) (* 10 main_~y~0))) [2020-10-23 22:01:51,349 INFO L277 CegarLoopResult]: At program point L25(line 25) the Hoare annotation is: true [2020-10-23 22:01:51,349 INFO L270 CegarLoopResult]: At program point L27-2(line 27) the Hoare annotation is: (<= (+ main_~x~0 50) 0) [2020-10-23 22:01:51,349 INFO L277 CegarLoopResult]: At program point mainEXIT(lines 24 35) the Hoare annotation is: true [2020-10-23 22:01:51,349 INFO L277 CegarLoopResult]: At program point mainFINAL(lines 24 35) the Hoare annotation is: true [2020-10-23 22:01:51,350 INFO L270 CegarLoopResult]: At program point L30(line 30) the Hoare annotation is: (let ((.cse0 (+ main_~x~0 65)) (.cse2 (* 6 main_~y~0))) (let ((.cse1 (<= .cse0 .cse2))) (or (<= (+ main_~x~0 53) (* 2 main_~y~0)) (<= .cse0 (* 5 main_~y~0)) (<= (+ main_~x~0 50) 0) (<= (+ main_~x~0 56) (* 3 main_~y~0)) (and .cse1 (<= (+ main_~x~0 86) (* 8 main_~y~0))) (and (<= (+ main_~x~0 105) (* 10 main_~y~0)) .cse1) (<= (+ main_~x~0 71) .cse2)))) [2020-10-23 22:01:51,350 INFO L277 CegarLoopResult]: At program point mainENTRY(lines 24 35) the Hoare annotation is: true [2020-10-23 22:01:51,350 INFO L270 CegarLoopResult]: At program point L28(line 28) the Hoare annotation is: (<= (+ main_~x~0 50) 0) [2020-10-23 22:01:51,350 INFO L270 CegarLoopResult]: At program point L28-1(line 28) the Hoare annotation is: (<= (+ main_~x~0 50) 0) [2020-10-23 22:01:51,350 INFO L277 CegarLoopResult]: At program point L26(line 26) the Hoare annotation is: true [2020-10-23 22:01:51,350 INFO L277 CegarLoopResult]: At program point L18-2(lines 17 22) the Hoare annotation is: true [2020-10-23 22:01:51,350 INFO L277 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 17 22) the Hoare annotation is: true [2020-10-23 22:01:51,351 INFO L277 CegarLoopResult]: At program point __VERIFIER_assertEXIT(lines 17 22) the Hoare annotation is: true [2020-10-23 22:01:51,351 INFO L270 CegarLoopResult]: At program point L19(line 19) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2020-10-23 22:01:51,351 INFO L270 CegarLoopResult]: At program point L18(lines 18 20) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2020-10-23 22:01:51,351 INFO L270 CegarLoopResult]: At program point L19-1(line 19) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2020-10-23 22:01:51,394 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 10:01:51 BoogieIcfgContainer [2020-10-23 22:01:51,394 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 22:01:51,397 INFO L168 Benchmark]: Toolchain (without parser) took 24687.15 ms. Allocated memory was 151.0 MB in the beginning and 314.6 MB in the end (delta: 163.6 MB). Free memory was 127.5 MB in the beginning and 118.2 MB in the end (delta: 9.3 MB). Peak memory consumption was 182.3 MB. Max. memory is 8.0 GB. [2020-10-23 22:01:51,398 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 151.0 MB. Free memory is still 127.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 22:01:51,402 INFO L168 Benchmark]: CACSL2BoogieTranslator took 238.26 ms. Allocated memory is still 151.0 MB. Free memory was 126.5 MB in the beginning and 117.5 MB in the end (delta: 9.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. [2020-10-23 22:01:51,403 INFO L168 Benchmark]: Boogie Preprocessor took 34.66 ms. Allocated memory is still 151.0 MB. Free memory was 117.5 MB in the beginning and 116.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-23 22:01:51,404 INFO L168 Benchmark]: RCFGBuilder took 332.24 ms. Allocated memory is still 151.0 MB. Free memory was 116.0 MB in the beginning and 101.3 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2020-10-23 22:01:51,410 INFO L168 Benchmark]: TraceAbstraction took 24070.41 ms. Allocated memory was 151.0 MB in the beginning and 314.6 MB in the end (delta: 163.6 MB). Free memory was 100.9 MB in the beginning and 118.2 MB in the end (delta: -17.3 MB). Peak memory consumption was 156.1 MB. Max. memory is 8.0 GB. [2020-10-23 22:01:51,417 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 151.0 MB. Free memory is still 127.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 238.26 ms. Allocated memory is still 151.0 MB. Free memory was 126.5 MB in the beginning and 117.5 MB in the end (delta: 9.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 34.66 ms. Allocated memory is still 151.0 MB. Free memory was 117.5 MB in the beginning and 116.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 332.24 ms. Allocated memory is still 151.0 MB. Free memory was 116.0 MB in the beginning and 101.3 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 24070.41 ms. Allocated memory was 151.0 MB in the beginning and 314.6 MB in the end (delta: 163.6 MB). Free memory was 100.9 MB in the beginning and 118.2 MB in the end (delta: -17.3 MB). Peak memory consumption was 156.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 29]: Loop Invariant Derived loop invariant: (((((x + 53 <= 2 * y || x + 65 <= 5 * y) || x + 50 <= 0) || x + 56 <= 3 * y) || x + 105 <= 10 * y) || x + 95 <= 9 * y) || x + 78 <= 7 * y - ProcedureContractResult [Line: 12]: Procedure Contract for reach_error Derived contract for procedure reach_error: 1 - ProcedureContractResult [Line: 24]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 17]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 47 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 22.7s, OverallIterations: 11, TraceHistogramMax: 10, AutomataDifference: 16.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 317 SDtfs, 587 SDslu, 1978 SDs, 0 SdLazy, 7015 SolverSat, 297 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 526 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 493 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6538 ImplicationChecksByTransitivity, 14.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=76occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 11 MinimizatonAttempts, 10 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 42 LocationsWithAnnotation, 162 PreInvPairs, 246 NumberOfFragments, 429 HoareAnnotationTreeSize, 162 FomulaSimplifications, 173087 FormulaSimplificationTreeSizeReduction, 0.3s HoareSimplificationTime, 42 FomulaSimplificationsInter, 2303 FormulaSimplificationTreeSizeReductionInter, 0.8s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...