/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/cggmp2005b.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 21:26:50,458 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 21:26:50,463 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 21:26:50,549 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-21 21:26:50,616 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 21:26:50,622 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 21:26:50,626 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 21:26:50,631 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 21:26:50,638 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 21:26:50,642 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 21:26:50,655 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 21:26:50,667 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 21:26:50,674 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 21:26:50,679 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 21:26:50,683 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 21:26:50,688 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 21:26:50,697 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-21 21:26:50,719 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 21:26:50,720 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 21:26:50,723 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 21:26:50,725 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-21 21:26:50,758 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 21:26:50,759 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 21:26:50,762 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 21:26:50,763 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 21:26:50,763 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 21:26:50,763 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 21:26:50,764 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 21:26:50,764 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 21:26:50,764 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 21:26:50,764 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 21:26:50,764 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 21:26:50,765 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 21:26:50,765 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 21:26:50,765 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 21:26:50,766 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 21:26:50,766 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-21 21:26:50,766 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-21 21:26:50,766 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 21:26:50,767 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 21:26:50,767 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 21:26:50,767 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-21 21:26:50,768 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 21:26:50,768 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 21:26:51,401 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 21:26:51,455 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 21:26:51,463 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 21:26:51,466 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 21:26:51,468 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 21:26:51,470 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/cggmp2005b.i [2021-02-21 21:26:51,626 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/98e42e0b9/620eb7234d8648d2867e41e3f196f6cd/FLAG7eb1029ec [2021-02-21 21:26:52,838 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 21:26:52,840 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/cggmp2005b.i [2021-02-21 21:26:52,859 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/98e42e0b9/620eb7234d8648d2867e41e3f196f6cd/FLAG7eb1029ec [2021-02-21 21:26:53,047 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/98e42e0b9/620eb7234d8648d2867e41e3f196f6cd [2021-02-21 21:26:53,054 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 21:26:53,081 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 21:26:53,087 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 21:26:53,087 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 21:26:53,095 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 21:26:53,097 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 09:26:53" (1/1) ... [2021-02-21 21:26:53,100 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@fd48785 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:26:53, skipping insertion in model container [2021-02-21 21:26:53,101 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 09:26:53" (1/1) ... [2021-02-21 21:26:53,118 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 21:26:53,150 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 21:26:53,437 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/cggmp2005b.i[895,908] [2021-02-21 21:26:53,458 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 21:26:53,483 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 21:26:53,503 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/cggmp2005b.i[895,908] [2021-02-21 21:26:53,508 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 21:26:53,535 INFO L208 MainTranslator]: Completed translation [2021-02-21 21:26:53,537 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:26:53 WrapperNode [2021-02-21 21:26:53,537 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 21:26:53,539 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 21:26:53,540 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 21:26:53,540 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 21:26:53,560 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:26:53" (1/1) ... [2021-02-21 21:26:53,560 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:26:53" (1/1) ... [2021-02-21 21:26:53,574 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:26:53" (1/1) ... [2021-02-21 21:26:53,574 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:26:53" (1/1) ... [2021-02-21 21:26:53,584 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:26:53" (1/1) ... [2021-02-21 21:26:53,593 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:26:53" (1/1) ... [2021-02-21 21:26:53,600 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:26:53" (1/1) ... [2021-02-21 21:26:53,603 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 21:26:53,606 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 21:26:53,606 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 21:26:53,607 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 21:26:53,609 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:26:53" (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 [2021-02-21 21:26:53,798 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 21:26:53,799 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 21:26:53,799 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 21:26:53,799 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-21 21:26:53,800 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-21 21:26:53,801 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 21:26:53,801 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 21:26:53,802 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 21:26:53,802 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-02-21 21:26:53,803 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-02-21 21:26:53,804 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 21:26:53,805 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 21:26:53,805 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-21 21:26:53,805 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-21 21:26:53,806 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-21 21:26:53,807 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 21:26:53,808 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 21:26:53,808 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 21:26:53,810 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 21:26:53,810 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 21:26:53,815 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 21:26:53,815 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 21:26:54,373 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 21:26:54,374 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-02-21 21:26:54,386 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 09:26:54 BoogieIcfgContainer [2021-02-21 21:26:54,386 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 21:26:54,400 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 21:26:54,401 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 21:26:54,427 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 21:26:54,427 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 09:26:53" (1/3) ... [2021-02-21 21:26:54,433 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c4ed0b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 09:26:54, skipping insertion in model container [2021-02-21 21:26:54,437 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:26:53" (2/3) ... [2021-02-21 21:26:54,442 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c4ed0b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 09:26:54, skipping insertion in model container [2021-02-21 21:26:54,443 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 09:26:54" (3/3) ... [2021-02-21 21:26:54,451 INFO L111 eAbstractionObserver]: Analyzing ICFG cggmp2005b.i [2021-02-21 21:26:54,488 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-21 21:26:54,511 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 21:26:54,621 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 21:26:54,687 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 21:26:54,687 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 21:26:54,688 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-21 21:26:54,688 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 21:26:54,688 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 21:26:54,688 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 21:26:54,689 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 21:26:54,689 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 21:26:54,719 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2021-02-21 21:26:54,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-02-21 21:26:54,741 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:26:54,744 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] [2021-02-21 21:26:54,745 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:26:54,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:26:54,761 INFO L82 PathProgramCache]: Analyzing trace with hash 1102075345, now seen corresponding path program 1 times [2021-02-21 21:26:54,782 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:26:54,783 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [545497764] [2021-02-21 21:26:54,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:26:54,953 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:26:55,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:26:55,153 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:26:55,170 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:26:55,180 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:26:55,185 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:26:55,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:26:55,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:26:55,346 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:26:55,349 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:26:55,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 21:26:55,364 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [545497764] [2021-02-21 21:26:55,369 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:26:55,370 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-21 21:26:55,371 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486053248] [2021-02-21 21:26:55,385 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-21 21:26:55,386 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:26:55,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-21 21:26:55,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 21:26:55,425 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 3 states. [2021-02-21 21:26:55,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:26:55,650 INFO L93 Difference]: Finished difference Result 56 states and 69 transitions. [2021-02-21 21:26:55,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-21 21:26:55,655 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2021-02-21 21:26:55,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:26:55,671 INFO L225 Difference]: With dead ends: 56 [2021-02-21 21:26:55,672 INFO L226 Difference]: Without dead ends: 29 [2021-02-21 21:26:55,681 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 21:26:55,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-02-21 21:26:55,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-02-21 21:26:55,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2021-02-21 21:26:55,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2021-02-21 21:26:55,801 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 22 [2021-02-21 21:26:55,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:26:55,802 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2021-02-21 21:26:55,802 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-21 21:26:55,803 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2021-02-21 21:26:55,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-02-21 21:26:55,804 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:26:55,805 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] [2021-02-21 21:26:55,805 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 21:26:55,806 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:26:55,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:26:55,808 INFO L82 PathProgramCache]: Analyzing trace with hash 1072522673, now seen corresponding path program 1 times [2021-02-21 21:26:55,809 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:26:55,810 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1068255624] [2021-02-21 21:26:55,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:26:55,817 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:26:55,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:26:55,944 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:26:55,951 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:26:55,956 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:26:55,959 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:26:55,991 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:26:56,000 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:26:56,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:26:56,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:26:56,174 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:26:56,177 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:26:56,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 21:26:56,188 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1068255624] [2021-02-21 21:26:56,189 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:26:56,190 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 21:26:56,194 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431517619] [2021-02-21 21:26:56,197 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 21:26:56,198 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:26:56,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 21:26:56,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 21:26:56,203 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand 4 states. [2021-02-21 21:26:56,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:26:56,581 INFO L93 Difference]: Finished difference Result 36 states and 38 transitions. [2021-02-21 21:26:56,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-21 21:26:56,582 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2021-02-21 21:26:56,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:26:56,588 INFO L225 Difference]: With dead ends: 36 [2021-02-21 21:26:56,589 INFO L226 Difference]: Without dead ends: 31 [2021-02-21 21:26:56,598 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 [2021-02-21 21:26:56,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-02-21 21:26:56,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30. [2021-02-21 21:26:56,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2021-02-21 21:26:56,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions. [2021-02-21 21:26:56,694 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 22 [2021-02-21 21:26:56,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:26:56,698 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 32 transitions. [2021-02-21 21:26:56,698 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 21:26:56,698 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2021-02-21 21:26:56,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-02-21 21:26:56,706 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:26:56,707 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] [2021-02-21 21:26:56,708 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 21:26:56,708 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:26:56,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:26:56,716 INFO L82 PathProgramCache]: Analyzing trace with hash 2002613161, now seen corresponding path program 1 times [2021-02-21 21:26:56,716 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:26:56,717 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1946077211] [2021-02-21 21:26:56,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:26:59,047 WARN L202 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 58 [2021-02-21 21:26:59,080 WARN L141 QuantifierPusher]: treesize reduction 9, result has 91.1 percent of original size [2021-02-21 21:26:59,149 WARN L147 QuantifierPusher]: treesize reduction 9, result has 91.1 percent of original size 92 [2021-02-21 21:26:59,152 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-02-21 21:26:59,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:26:59,224 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:26:59,226 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:26:59,228 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:26:59,230 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:26:59,239 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:26:59,241 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-21 21:26:59,256 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:26:59,258 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:26:59,268 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:26:59,269 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:26:59,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:26:59,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:26:59,323 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:26:59,324 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:26:59,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 21:26:59,339 WARN L141 QuantifierPusher]: treesize reduction 3, result has 96.6 percent of original size [2021-02-21 21:26:59,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 21:26:59,355 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:26:59,359 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-02-21 21:26:59,364 WARN L147 QuantifierPusher]: treesize reduction 3, result has 96.6 percent of original size 85 [2021-02-21 21:26:59,393 WARN L141 QuantifierPusher]: treesize reduction 3, result has 75.0 percent of original size [2021-02-21 21:26:59,395 WARN L147 QuantifierPusher]: treesize reduction 3, result has 75.0 percent of original size 9 [2021-02-21 21:26:59,398 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:26:59,402 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-21 21:26:59,420 WARN L141 QuantifierPusher]: treesize reduction 12, result has 7.7 percent of original size [2021-02-21 21:26:59,422 WARN L147 QuantifierPusher]: treesize reduction 12, result has 7.7 percent of original size 1 [2021-02-21 21:26:59,423 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1946077211] [2021-02-21 21:26:59,424 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:26:59,424 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-21 21:26:59,424 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386343912] [2021-02-21 21:26:59,425 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-21 21:26:59,426 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:26:59,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-21 21:26:59,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-02-21 21:26:59,428 INFO L87 Difference]: Start difference. First operand 30 states and 32 transitions. Second operand 6 states. [2021-02-21 21:26:59,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:26:59,716 INFO L93 Difference]: Finished difference Result 45 states and 50 transitions. [2021-02-21 21:26:59,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-21 21:26:59,717 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 27 [2021-02-21 21:26:59,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:26:59,719 INFO L225 Difference]: With dead ends: 45 [2021-02-21 21:26:59,719 INFO L226 Difference]: Without dead ends: 33 [2021-02-21 21:26:59,721 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-02-21 21:26:59,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-02-21 21:26:59,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 32. [2021-02-21 21:26:59,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2021-02-21 21:26:59,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 34 transitions. [2021-02-21 21:26:59,736 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 34 transitions. Word has length 27 [2021-02-21 21:26:59,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:26:59,736 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 34 transitions. [2021-02-21 21:26:59,736 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-21 21:26:59,737 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 34 transitions. [2021-02-21 21:26:59,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-02-21 21:26:59,738 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:26:59,738 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] [2021-02-21 21:26:59,739 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-21 21:26:59,740 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:26:59,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:26:59,746 INFO L82 PathProgramCache]: Analyzing trace with hash 1111162602, now seen corresponding path program 1 times [2021-02-21 21:26:59,746 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:26:59,747 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1483693732] [2021-02-21 21:26:59,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:26:59,758 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:26:59,760 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-21 21:26:59,769 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-21 21:26:59,776 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-21 21:26:59,780 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:26:59,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:26:59,824 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:26:59,825 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:26:59,827 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:26:59,829 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:26:59,835 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:26:59,836 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:26:59,844 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:26:59,846 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:26:59,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:26:59,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:26:59,896 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:26:59,897 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:26:59,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 21:26:59,902 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1483693732] [2021-02-21 21:26:59,903 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:26:59,903 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-21 21:26:59,903 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836977211] [2021-02-21 21:26:59,904 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-21 21:26:59,904 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:26:59,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-21 21:26:59,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-02-21 21:26:59,906 INFO L87 Difference]: Start difference. First operand 32 states and 34 transitions. Second operand 5 states. [2021-02-21 21:27:00,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:27:00,127 INFO L93 Difference]: Finished difference Result 44 states and 48 transitions. [2021-02-21 21:27:00,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-21 21:27:00,128 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 29 [2021-02-21 21:27:00,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:27:00,130 INFO L225 Difference]: With dead ends: 44 [2021-02-21 21:27:00,131 INFO L226 Difference]: Without dead ends: 39 [2021-02-21 21:27:00,132 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-02-21 21:27:00,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-02-21 21:27:00,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 38. [2021-02-21 21:27:00,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2021-02-21 21:27:00,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 42 transitions. [2021-02-21 21:27:00,149 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 42 transitions. Word has length 29 [2021-02-21 21:27:00,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:27:00,150 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 42 transitions. [2021-02-21 21:27:00,151 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-21 21:27:00,151 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 42 transitions. [2021-02-21 21:27:00,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-02-21 21:27:00,153 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:27:00,153 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] [2021-02-21 21:27:00,154 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-21 21:27:00,154 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:27:00,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:27:00,156 INFO L82 PathProgramCache]: Analyzing trace with hash 1407956496, now seen corresponding path program 2 times [2021-02-21 21:27:00,156 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:27:00,156 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1038911398] [2021-02-21 21:27:00,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:27:00,173 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-21 21:27:00,176 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:27:00,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:27:00,240 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:27:00,242 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:27:00,244 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:27:00,245 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 21:27:00,251 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:27:00,254 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 21:27:00,297 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:27:00,298 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:27:00,313 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:27:00,315 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:27:00,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:27:00,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:27:00,420 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:27:00,421 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:27:00,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 21:27:00,429 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1038911398] [2021-02-21 21:27:00,429 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:27:00,430 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-21 21:27:00,434 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439213197] [2021-02-21 21:27:00,436 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-21 21:27:00,436 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:27:00,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-21 21:27:00,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-21 21:27:00,441 INFO L87 Difference]: Start difference. First operand 38 states and 42 transitions. Second operand 6 states. [2021-02-21 21:27:00,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:27:00,767 INFO L93 Difference]: Finished difference Result 57 states and 65 transitions. [2021-02-21 21:27:00,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-21 21:27:00,768 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 34 [2021-02-21 21:27:00,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:27:00,773 INFO L225 Difference]: With dead ends: 57 [2021-02-21 21:27:00,773 INFO L226 Difference]: Without dead ends: 41 [2021-02-21 21:27:00,776 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-02-21 21:27:00,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-02-21 21:27:00,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 40. [2021-02-21 21:27:00,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2021-02-21 21:27:00,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2021-02-21 21:27:00,816 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 34 [2021-02-21 21:27:00,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:27:00,817 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2021-02-21 21:27:00,818 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-21 21:27:00,818 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2021-02-21 21:27:00,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-02-21 21:27:00,825 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:27:00,825 INFO L422 BasicCegarLoop]: trace histogram [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] [2021-02-21 21:27:00,826 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-21 21:27:00,826 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:27:00,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:27:00,827 INFO L82 PathProgramCache]: Analyzing trace with hash -1443352657, now seen corresponding path program 3 times [2021-02-21 21:27:00,827 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:27:00,829 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [498420600] [2021-02-21 21:27:00,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:27:00,844 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:27:00,850 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-21 21:27:00,869 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-21 21:27:00,871 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-21 21:27:00,898 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-21 21:27:00,902 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:27:00,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:27:01,060 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:27:01,063 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:27:01,068 WARN L141 QuantifierPusher]: treesize reduction 6, result has 33.3 percent of original size [2021-02-21 21:27:01,069 WARN L147 QuantifierPusher]: treesize reduction 6, result has 33.3 percent of original size 3 [2021-02-21 21:27:01,075 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:27:01,077 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 21:27:01,085 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:27:01,086 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 21:27:01,095 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:27:01,096 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:27:01,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:27:01,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:27:01,142 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:27:01,143 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:27:01,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 21:27:01,148 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [498420600] [2021-02-21 21:27:01,149 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:27:01,149 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-21 21:27:01,149 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670082272] [2021-02-21 21:27:01,150 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-21 21:27:01,150 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:27:01,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-21 21:27:01,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-21 21:27:01,152 INFO L87 Difference]: Start difference. First operand 40 states and 44 transitions. Second operand 6 states. [2021-02-21 21:27:01,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:27:01,395 INFO L93 Difference]: Finished difference Result 51 states and 59 transitions. [2021-02-21 21:27:01,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-21 21:27:01,395 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 36 [2021-02-21 21:27:01,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:27:01,397 INFO L225 Difference]: With dead ends: 51 [2021-02-21 21:27:01,397 INFO L226 Difference]: Without dead ends: 0 [2021-02-21 21:27:01,398 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-02-21 21:27:01,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-02-21 21:27:01,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-02-21 21:27:01,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-02-21 21:27:01,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-02-21 21:27:01,400 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 36 [2021-02-21 21:27:01,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:27:01,400 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-02-21 21:27:01,400 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-21 21:27:01,400 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-02-21 21:27:01,400 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-02-21 21:27:01,401 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-21 21:27:01,405 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-02-21 21:27:02,221 INFO L189 CegarLoopUtils]: For program point reach_errorEXIT(line 12) no Hoare annotation was computed. [2021-02-21 21:27:02,221 INFO L189 CegarLoopUtils]: For program point reach_errorENTRY(line 12) no Hoare annotation was computed. [2021-02-21 21:27:02,222 INFO L189 CegarLoopUtils]: For program point L12-1(line 12) no Hoare annotation was computed. [2021-02-21 21:27:02,223 INFO L189 CegarLoopUtils]: For program point L12-2(line 12) no Hoare annotation was computed. [2021-02-21 21:27:02,223 INFO L189 CegarLoopUtils]: For program point L12-3(line 12) no Hoare annotation was computed. [2021-02-21 21:27:02,224 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-21 21:27:02,224 INFO L192 CegarLoopUtils]: At program point L-1-1(line -1) the Hoare annotation is: true [2021-02-21 21:27:02,224 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initFINAL(line 12) the Hoare annotation is: true [2021-02-21 21:27:02,224 INFO L192 CegarLoopUtils]: At program point L12(line 12) the Hoare annotation is: true [2021-02-21 21:27:02,224 INFO L192 CegarLoopUtils]: At program point L12-1(line 12) the Hoare annotation is: true [2021-02-21 21:27:02,225 INFO L192 CegarLoopUtils]: At program point L12-2(line 12) the Hoare annotation is: true [2021-02-21 21:27:02,225 INFO L185 CegarLoopUtils]: 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)|)) [2021-02-21 21:27:02,225 INFO L192 CegarLoopUtils]: At program point L12-3(line 12) the Hoare annotation is: true [2021-02-21 21:27:02,225 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2021-02-21 21:27:02,225 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2021-02-21 21:27:02,226 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-21 21:27:02,226 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-02-21 21:27:02,226 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2021-02-21 21:27:02,226 INFO L189 CegarLoopUtils]: For program point L15(line 15) no Hoare annotation was computed. [2021-02-21 21:27:02,226 INFO L189 CegarLoopUtils]: For program point L15-1(line 15) no Hoare annotation was computed. [2021-02-21 21:27:02,226 INFO L189 CegarLoopUtils]: For program point assume_abort_if_notENTRY(lines 14 16) no Hoare annotation was computed. [2021-02-21 21:27:02,231 INFO L189 CegarLoopUtils]: For program point L15-3(lines 14 16) no Hoare annotation was computed. [2021-02-21 21:27:02,233 INFO L189 CegarLoopUtils]: For program point assume_abort_if_notEXIT(lines 14 16) no Hoare annotation was computed. [2021-02-21 21:27:02,233 INFO L185 CegarLoopUtils]: At program point L35-2(lines 35 37) the Hoare annotation is: (= main_~k~0 4) [2021-02-21 21:27:02,234 INFO L185 CegarLoopUtils]: At program point L35-3(lines 29 38) the Hoare annotation is: (or (= main_~k~0 4) (and (= main_~i~0 0) (<= (+ main_~j~0 100) 0))) [2021-02-21 21:27:02,236 INFO L185 CegarLoopUtils]: At program point L31-2(lines 31 33) the Hoare annotation is: (or (= main_~k~0 4) (<= main_~i~0 1)) [2021-02-21 21:27:02,237 INFO L185 CegarLoopUtils]: At program point L31-3(lines 31 33) the Hoare annotation is: (or (= main_~k~0 4) (<= main_~i~0 1)) [2021-02-21 21:27:02,238 INFO L185 CegarLoopUtils]: At program point L27(line 27) the Hoare annotation is: (= main_~i~0 0) [2021-02-21 21:27:02,239 INFO L185 CegarLoopUtils]: At program point L29-2(lines 29 38) the Hoare annotation is: (= main_~k~0 4) [2021-02-21 21:27:02,239 INFO L192 CegarLoopUtils]: At program point L25(line 25) the Hoare annotation is: true [2021-02-21 21:27:02,239 INFO L192 CegarLoopUtils]: At program point mainEXIT(lines 24 41) the Hoare annotation is: true [2021-02-21 21:27:02,239 INFO L192 CegarLoopUtils]: At program point L25-1(line 25) the Hoare annotation is: true [2021-02-21 21:27:02,239 INFO L192 CegarLoopUtils]: At program point mainFINAL(lines 24 41) the Hoare annotation is: true [2021-02-21 21:27:02,240 INFO L185 CegarLoopUtils]: At program point L36(line 36) the Hoare annotation is: false [2021-02-21 21:27:02,240 INFO L185 CegarLoopUtils]: At program point L32(line 32) the Hoare annotation is: (or (= main_~k~0 4) (<= main_~i~0 1)) [2021-02-21 21:27:02,240 INFO L185 CegarLoopUtils]: At program point L30(line 30) the Hoare annotation is: (or (= main_~k~0 4) (and (= main_~i~0 0) (<= (+ main_~j~0 100) 0))) [2021-02-21 21:27:02,241 INFO L192 CegarLoopUtils]: At program point mainENTRY(lines 24 41) the Hoare annotation is: true [2021-02-21 21:27:02,241 INFO L185 CegarLoopUtils]: At program point L28(line 28) the Hoare annotation is: (= main_~i~0 0) [2021-02-21 21:27:02,241 INFO L192 CegarLoopUtils]: At program point L26(line 26) the Hoare annotation is: true [2021-02-21 21:27:02,241 INFO L192 CegarLoopUtils]: At program point L39(line 39) the Hoare annotation is: true [2021-02-21 21:27:02,241 INFO L192 CegarLoopUtils]: At program point L18-2(lines 17 22) the Hoare annotation is: true [2021-02-21 21:27:02,241 INFO L192 CegarLoopUtils]: At program point __VERIFIER_assertENTRY(lines 17 22) the Hoare annotation is: true [2021-02-21 21:27:02,242 INFO L192 CegarLoopUtils]: At program point __VERIFIER_assertEXIT(lines 17 22) the Hoare annotation is: true [2021-02-21 21:27:02,242 INFO L185 CegarLoopUtils]: At program point L19(line 19) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-02-21 21:27:02,242 INFO L185 CegarLoopUtils]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-02-21 21:27:02,243 INFO L185 CegarLoopUtils]: At program point L18(lines 18 20) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2021-02-21 21:27:02,243 INFO L185 CegarLoopUtils]: At program point L19-1(line 19) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-02-21 21:27:02,282 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 09:27:02 BoogieIcfgContainer [2021-02-21 21:27:02,282 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 21:27:02,288 INFO L168 Benchmark]: Toolchain (without parser) took 9220.18 ms. Allocated memory was 154.1 MB in the beginning and 185.6 MB in the end (delta: 31.5 MB). Free memory was 130.3 MB in the beginning and 118.5 MB in the end (delta: 11.8 MB). Peak memory consumption was 99.9 MB. Max. memory is 8.0 GB. [2021-02-21 21:27:02,289 INFO L168 Benchmark]: CDTParser took 0.56 ms. Allocated memory is still 154.1 MB. Free memory is still 125.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 21:27:02,290 INFO L168 Benchmark]: CACSL2BoogieTranslator took 451.05 ms. Allocated memory is still 154.1 MB. Free memory was 129.3 MB in the beginning and 119.7 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-21 21:27:02,291 INFO L168 Benchmark]: Boogie Preprocessor took 64.90 ms. Allocated memory is still 154.1 MB. Free memory was 119.7 MB in the beginning and 118.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-21 21:27:02,292 INFO L168 Benchmark]: RCFGBuilder took 780.89 ms. Allocated memory is still 154.1 MB. Free memory was 118.4 MB in the beginning and 102.0 MB in the end (delta: 16.3 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. [2021-02-21 21:27:02,293 INFO L168 Benchmark]: TraceAbstraction took 7882.24 ms. Allocated memory was 154.1 MB in the beginning and 185.6 MB in the end (delta: 31.5 MB). Free memory was 101.6 MB in the beginning and 118.5 MB in the end (delta: -16.9 MB). Peak memory consumption was 71.5 MB. Max. memory is 8.0 GB. [2021-02-21 21:27:02,297 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.56 ms. Allocated memory is still 154.1 MB. Free memory is still 125.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 451.05 ms. Allocated memory is still 154.1 MB. Free memory was 129.3 MB in the beginning and 119.7 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 64.90 ms. Allocated memory is still 154.1 MB. Free memory was 119.7 MB in the beginning and 118.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 780.89 ms. Allocated memory is still 154.1 MB. Free memory was 118.4 MB in the beginning and 102.0 MB in the end (delta: 16.3 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 7882.24 ms. Allocated memory was 154.1 MB in the beginning and 185.6 MB in the end (delta: 31.5 MB). Free memory was 101.6 MB in the beginning and 118.5 MB in the end (delta: -16.9 MB). Peak memory consumption was 71.5 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: k == 4 - InvariantResult [Line: 31]: Loop Invariant Derived loop invariant: k == 4 || i <= 1 - InvariantResult [Line: 29]: Loop Invariant Derived loop invariant: k == 4 || (i == 0 && j + 100 <= 0) - 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: 6.7s, OverallIterations: 6, TraceHistogramMax: 2, AutomataDifference: 1.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.8s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 180 SDtfs, 159 SDslu, 150 SDs, 0 SdLazy, 250 SolverSat, 21 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 59 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=40occurred in iteration=5, 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, 6 MinimizatonAttempts, 4 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 37 LocationsWithAnnotation, 79 PreInvPairs, 117 NumberOfFragments, 124 HoareAnnotationTreeSize, 79 FomulaSimplifications, 711 FormulaSimplificationTreeSizeReduction, 0.3s HoareSimplificationTime, 37 FomulaSimplificationsInter, 741 FormulaSimplificationTreeSizeReductionInter, 0.4s 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...