/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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-lit/hhk2008.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 13:54:57,482 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 13:54:57,486 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 13:54:57,527 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-23 13:54:57,540 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 13:54:57,541 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 13:54:57,543 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 13:54:57,544 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 13:54:57,545 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 13:54:57,546 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 13:54:57,548 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 13:54:57,551 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 13:54:57,553 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 13:54:57,554 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 13:54:57,556 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 13:54:57,557 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 13:54:57,560 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-23 13:54:57,570 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 13:54:57,572 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 13:54:57,572 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 13:54:57,573 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2021-02-23 13:54:57,623 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 13:54:57,623 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 13:54:57,627 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-02-23 13:54:57,627 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-02-23 13:54:57,627 INFO L138 SettingsManager]: * Use SBE=true [2021-02-23 13:54:57,628 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 13:54:57,628 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 13:54:57,628 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 13:54:57,628 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 13:54:57,629 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 13:54:57,630 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 13:54:57,630 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 13:54:57,630 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 13:54:57,630 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 13:54:57,631 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 13:54:57,631 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 13:54:57,631 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 13:54:57,632 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 13:54:57,632 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-02-23 13:54:57,632 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 13:54:57,632 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 13:54:57,633 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 13:54:57,633 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-02-23 13:54:57,633 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-02-23 13:54:57,633 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-02-23 13:54:57,633 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-02-23 13:54:57,634 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 13:54:57,634 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-02-23 13:54:57,634 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 13:54:58,048 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 13:54:58,074 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 13:54:58,078 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 13:54:58,079 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 13:54:58,080 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 13:54:58,081 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/hhk2008.i [2021-02-23 13:54:58,161 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6328e1bce/6c9d11f0e0c74db3aa352e27c597aa4d/FLAG0b61af1dd [2021-02-23 13:54:58,749 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 13:54:58,749 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/hhk2008.i [2021-02-23 13:54:58,757 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6328e1bce/6c9d11f0e0c74db3aa352e27c597aa4d/FLAG0b61af1dd [2021-02-23 13:54:59,106 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6328e1bce/6c9d11f0e0c74db3aa352e27c597aa4d [2021-02-23 13:54:59,110 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 13:54:59,123 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 13:54:59,125 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 13:54:59,126 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 13:54:59,130 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 13:54:59,131 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 01:54:59" (1/1) ... [2021-02-23 13:54:59,132 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6726f420 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:54:59, skipping insertion in model container [2021-02-23 13:54:59,132 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 01:54:59" (1/1) ... [2021-02-23 13:54:59,143 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 13:54:59,163 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 13:54:59,343 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/hhk2008.i[895,908] [2021-02-23 13:54:59,356 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 13:54:59,367 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 13:54:59,383 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/hhk2008.i[895,908] [2021-02-23 13:54:59,388 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 13:54:59,406 INFO L208 MainTranslator]: Completed translation [2021-02-23 13:54:59,407 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:54:59 WrapperNode [2021-02-23 13:54:59,407 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 13:54:59,409 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 13:54:59,409 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 13:54:59,409 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 13:54:59,423 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:54:59" (1/1) ... [2021-02-23 13:54:59,424 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:54:59" (1/1) ... [2021-02-23 13:54:59,433 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:54:59" (1/1) ... [2021-02-23 13:54:59,433 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:54:59" (1/1) ... [2021-02-23 13:54:59,440 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:54:59" (1/1) ... [2021-02-23 13:54:59,445 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:54:59" (1/1) ... [2021-02-23 13:54:59,447 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:54:59" (1/1) ... [2021-02-23 13:54:59,449 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 13:54:59,450 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 13:54:59,450 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 13:54:59,451 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 13:54:59,452 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:54:59" (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 [2021-02-23 13:54:59,589 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 13:54:59,590 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 13:54:59,590 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 13:54:59,590 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-23 13:54:59,591 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-23 13:54:59,591 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 13:54:59,592 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 13:54:59,592 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 13:54:59,593 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-02-23 13:54:59,593 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-02-23 13:54:59,593 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 13:54:59,594 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 13:54:59,595 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-23 13:54:59,596 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-23 13:54:59,597 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-23 13:54:59,597 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 13:54:59,597 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 13:54:59,597 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 13:54:59,598 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 13:54:59,598 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 13:54:59,598 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 13:54:59,598 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 13:55:00,052 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 13:55:00,055 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-02-23 13:55:00,058 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 01:55:00 BoogieIcfgContainer [2021-02-23 13:55:00,058 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 13:55:00,063 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 13:55:00,063 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 13:55:00,073 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 13:55:00,074 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 01:54:59" (1/3) ... [2021-02-23 13:55:00,077 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2064f05c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 01:55:00, skipping insertion in model container [2021-02-23 13:55:00,077 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:54:59" (2/3) ... [2021-02-23 13:55:00,078 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2064f05c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 01:55:00, skipping insertion in model container [2021-02-23 13:55:00,078 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 01:55:00" (3/3) ... [2021-02-23 13:55:00,082 INFO L111 eAbstractionObserver]: Analyzing ICFG hhk2008.i [2021-02-23 13:55:00,100 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-02-23 13:55:00,112 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 13:55:00,133 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 13:55:00,179 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 13:55:00,179 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 13:55:00,179 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-02-23 13:55:00,180 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 13:55:00,180 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 13:55:00,180 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 13:55:00,180 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 13:55:00,180 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 13:55:00,211 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2021-02-23 13:55:00,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-02-23 13:55:00,218 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 13:55:00,220 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 13:55:00,220 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 13:55:00,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 13:55:00,230 INFO L82 PathProgramCache]: Analyzing trace with hash 499112448, now seen corresponding path program 1 times [2021-02-23 13:55:00,242 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-23 13:55:00,243 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264435608] [2021-02-23 13:55:00,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 13:55:00,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:55:00,494 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:55:00,496 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:55:00,497 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:55:00,498 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:55:00,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 13:55:00,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:55:00,552 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:55:00,553 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:55:00,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 13:55:00,558 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264435608] [2021-02-23 13:55:00,559 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 13:55:00,559 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-23 13:55:00,560 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509307109] [2021-02-23 13:55:00,565 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-23 13:55:00,565 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-23 13:55:00,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-23 13:55:00,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 13:55:00,583 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 3 states. [2021-02-23 13:55:00,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 13:55:00,635 INFO L93 Difference]: Finished difference Result 33 states and 38 transitions. [2021-02-23 13:55:00,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-23 13:55:00,638 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2021-02-23 13:55:00,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 13:55:00,645 INFO L225 Difference]: With dead ends: 33 [2021-02-23 13:55:00,646 INFO L226 Difference]: Without dead ends: 14 [2021-02-23 13:55:00,649 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 13:55:00,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-02-23 13:55:00,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-02-23 13:55:00,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2021-02-23 13:55:00,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2021-02-23 13:55:00,694 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 13 [2021-02-23 13:55:00,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 13:55:00,694 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2021-02-23 13:55:00,694 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-23 13:55:00,695 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2021-02-23 13:55:00,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-02-23 13:55:00,695 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 13:55:00,696 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 13:55:00,696 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 13:55:00,696 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 13:55:00,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 13:55:00,697 INFO L82 PathProgramCache]: Analyzing trace with hash 495418364, now seen corresponding path program 1 times [2021-02-23 13:55:00,698 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-23 13:55:00,698 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592584836] [2021-02-23 13:55:00,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 13:55:00,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:55:00,771 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:55:00,771 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:55:00,789 WARN L141 QuantifierPusher]: treesize reduction 13, result has 60.6 percent of original size [2021-02-23 13:55:00,794 WARN L147 QuantifierPusher]: treesize reduction 13, result has 60.6 percent of original size 20 [2021-02-23 13:55:00,809 WARN L141 QuantifierPusher]: treesize reduction 13, result has 48.0 percent of original size [2021-02-23 13:55:00,811 WARN L147 QuantifierPusher]: treesize reduction 13, result has 48.0 percent of original size 12 [2021-02-23 13:55:00,820 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:55:00,821 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 13:55:00,828 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:55:00,829 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 13:55:00,836 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:55:00,837 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:55:00,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 13:55:00,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:55:00,906 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:55:00,907 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:55:00,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 13:55:00,909 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592584836] [2021-02-23 13:55:00,910 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 13:55:00,910 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-23 13:55:00,910 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12353396] [2021-02-23 13:55:00,918 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-23 13:55:00,918 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-23 13:55:00,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-23 13:55:00,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-02-23 13:55:00,920 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 7 states. [2021-02-23 13:55:01,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 13:55:01,110 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2021-02-23 13:55:01,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-23 13:55:01,110 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2021-02-23 13:55:01,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 13:55:01,111 INFO L225 Difference]: With dead ends: 20 [2021-02-23 13:55:01,112 INFO L226 Difference]: Without dead ends: 15 [2021-02-23 13:55:01,113 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-02-23 13:55:01,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-02-23 13:55:01,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-02-23 13:55:01,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2021-02-23 13:55:01,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2021-02-23 13:55:01,120 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 13 [2021-02-23 13:55:01,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 13:55:01,120 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2021-02-23 13:55:01,121 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-23 13:55:01,121 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2021-02-23 13:55:01,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-02-23 13:55:01,121 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 13:55:01,122 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 13:55:01,122 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 13:55:01,122 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 13:55:01,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 13:55:01,123 INFO L82 PathProgramCache]: Analyzing trace with hash -1787404818, now seen corresponding path program 1 times [2021-02-23 13:55:01,123 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-23 13:55:01,124 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890898318] [2021-02-23 13:55:01,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 13:55:01,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:55:01,173 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:55:01,174 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:55:01,176 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:55:01,177 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-23 13:55:01,187 WARN L141 QuantifierPusher]: treesize reduction 13, result has 60.6 percent of original size [2021-02-23 13:55:01,188 WARN L147 QuantifierPusher]: treesize reduction 13, result has 60.6 percent of original size 20 [2021-02-23 13:55:01,203 WARN L141 QuantifierPusher]: treesize reduction 13, result has 48.0 percent of original size [2021-02-23 13:55:01,204 WARN L147 QuantifierPusher]: treesize reduction 13, result has 48.0 percent of original size 12 [2021-02-23 13:55:01,214 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:55:01,215 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 13:55:01,223 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:55:01,224 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 13:55:01,232 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:55:01,233 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:55:01,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 13:55:01,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:55:01,269 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:55:01,270 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:55:01,272 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 13:55:01,274 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890898318] [2021-02-23 13:55:01,274 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1173806443] [2021-02-23 13:55:01,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-02-23 13:55:01,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:55:01,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 15 conjunts are in the unsatisfiable core [2021-02-23 13:55:01,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-23 13:55:01,353 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:55:01,354 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:55:01,355 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:55:01,355 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:55:01,356 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:55:01,356 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:55:01,357 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:55:01,358 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:55:01,359 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:55:01,362 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:55:01,363 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:55:01,363 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:55:01,364 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:55:01,364 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:55:01,365 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:55:01,365 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:55:01,366 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:55:01,367 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:55:01,368 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:55:01,368 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:55:01,369 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:55:01,369 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:55:01,370 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:55:01,370 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:55:01,371 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:55:01,372 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:55:01,373 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:55:01,373 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:55:01,374 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:55:01,374 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:55:01,375 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:55:01,375 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:55:01,377 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:55:01,378 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:55:01,378 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:55:01,379 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:55:01,379 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:55:01,380 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:55:01,380 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:55:01,381 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:55:01,381 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:55:01,382 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:55:01,382 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:55:01,383 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:55:01,384 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:55:01,384 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:55:01,385 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:55:01,385 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:55:01,386 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:55:01,387 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:55:01,387 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:55:01,388 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:55:01,388 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:55:01,389 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:55:01,389 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:55:01,390 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:55:01,392 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:55:01,393 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 13:55:01,394 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:55:01,395 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 13:55:01,396 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:55:01,397 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 13:55:01,398 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:55:01,399 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 13:55:01,418 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:55:01,431 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-02-23 13:55:01,433 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:55:01,434 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-02-23 13:55:01,437 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:55:01,437 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-02-23 13:55:01,438 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:55:01,439 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-02-23 13:55:01,468 WARN L141 QuantifierPusher]: treesize reduction 1, result has 94.4 percent of original size [2021-02-23 13:55:01,471 WARN L147 QuantifierPusher]: treesize reduction 1, result has 94.4 percent of original size 17 [2021-02-23 13:55:01,473 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:55:01,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-23 13:55:01,483 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:55:01,483 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 13:55:01,485 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-02-23 13:55:01,486 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:55:01,498 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-23 13:55:01,501 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:55:01,502 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-02-23 13:55:01,525 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:55:01,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-23 13:55:01,531 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:55:01,532 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-02-23 13:55:01,533 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-02-23 13:55:01,537 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:55:01,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-23 13:55:01,540 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:55:01,541 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-02-23 13:55:01,542 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-23 13:55:01,544 WARN L141 QuantifierPusher]: treesize reduction 6, result has 80.0 percent of original size [2021-02-23 13:55:01,549 INFO L723 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-02-23 13:55:01,554 INFO L730 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:55:01,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-23 13:55:01,556 WARN L141 QuantifierPusher]: treesize reduction 6, result has 80.0 percent of original size [2021-02-23 13:55:01,561 WARN L147 QuantifierPusher]: treesize reduction 6, result has 80.0 percent of original size 24 [2021-02-23 13:55:01,563 WARN L147 QuantifierPusher]: treesize reduction 6, result has 80.0 percent of original size 24 [2021-02-23 13:55:01,564 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:55:01,564 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 13:55:01,579 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:55:01,580 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 13:55:01,581 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:55:01,582 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-02-23 13:55:01,583 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:55:01,583 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 13:55:01,584 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:55:01,584 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 13:55:01,598 WARN L141 QuantifierPusher]: treesize reduction 6, result has 14.3 percent of original size [2021-02-23 13:55:01,598 WARN L147 QuantifierPusher]: treesize reduction 6, result has 14.3 percent of original size 1 [2021-02-23 13:55:01,600 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:55:01,601 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:55:01,602 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:55:01,603 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:55:01,603 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:55:01,603 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:55:01,605 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 13:55:01,605 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-23 13:55:01,605 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 13 [2021-02-23 13:55:01,606 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392207831] [2021-02-23 13:55:01,606 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-02-23 13:55:01,606 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-23 13:55:01,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-02-23 13:55:01,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-02-23 13:55:01,608 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 13 states. [2021-02-23 13:55:02,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 13:55:02,001 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2021-02-23 13:55:02,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-23 13:55:02,002 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 14 [2021-02-23 13:55:02,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 13:55:02,002 INFO L225 Difference]: With dead ends: 17 [2021-02-23 13:55:02,002 INFO L226 Difference]: Without dead ends: 0 [2021-02-23 13:55:02,004 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2021-02-23 13:55:02,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-02-23 13:55:02,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-02-23 13:55:02,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-02-23 13:55:02,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-02-23 13:55:02,005 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2021-02-23 13:55:02,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 13:55:02,005 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-02-23 13:55:02,005 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2021-02-23 13:55:02,005 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-02-23 13:55:02,005 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-02-23 13:55:02,219 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-02-23 13:55:02,223 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-02-23 13:55:02,412 INFO L189 CegarLoopUtils]: For program point reach_errorEXIT(line 12) no Hoare annotation was computed. [2021-02-23 13:55:02,413 INFO L189 CegarLoopUtils]: For program point reach_errorENTRY(line 12) no Hoare annotation was computed. [2021-02-23 13:55:02,413 INFO L189 CegarLoopUtils]: For program point L12-1(line 12) no Hoare annotation was computed. [2021-02-23 13:55:02,413 INFO L189 CegarLoopUtils]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2021-02-23 13:55:02,413 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)|)) [2021-02-23 13:55:02,413 INFO L189 CegarLoopUtils]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2021-02-23 13:55:02,413 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-02-23 13:55:02,414 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-23 13:55:02,414 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-02-23 13:55:02,414 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-02-23 13:55:02,414 INFO L189 CegarLoopUtils]: For program point L15(line 15) no Hoare annotation was computed. [2021-02-23 13:55:02,414 INFO L189 CegarLoopUtils]: For program point assume_abort_if_notENTRY(lines 14 16) no Hoare annotation was computed. [2021-02-23 13:55:02,414 INFO L189 CegarLoopUtils]: For program point L15-2(lines 14 16) no Hoare annotation was computed. [2021-02-23 13:55:02,414 INFO L189 CegarLoopUtils]: For program point assume_abort_if_notEXIT(lines 14 16) no Hoare annotation was computed. [2021-02-23 13:55:02,414 INFO L185 CegarLoopUtils]: At program point L32-2(lines 32 35) the Hoare annotation is: (let ((.cse1 (+ main_~res~0 main_~cnt~0)) (.cse0 (+ main_~a~0 main_~b~0))) (and (<= .cse0 .cse1) (< main_~res~0 (+ main_~a~0 main_~b~0 1)) (<= .cse1 .cse0))) [2021-02-23 13:55:02,415 INFO L192 CegarLoopUtils]: At program point mainENTRY(lines 24 38) the Hoare annotation is: true [2021-02-23 13:55:02,415 INFO L189 CegarLoopUtils]: For program point L29(line 29) no Hoare annotation was computed. [2021-02-23 13:55:02,415 INFO L185 CegarLoopUtils]: At program point L32-3(lines 32 35) the Hoare annotation is: (and (<= (+ main_~a~0 main_~b~0) main_~res~0) (< main_~res~0 (+ main_~a~0 main_~b~0 1))) [2021-02-23 13:55:02,415 INFO L189 CegarLoopUtils]: For program point L28(line 28) no Hoare annotation was computed. [2021-02-23 13:55:02,415 INFO L189 CegarLoopUtils]: For program point mainEXIT(lines 24 38) no Hoare annotation was computed. [2021-02-23 13:55:02,415 INFO L189 CegarLoopUtils]: For program point mainFINAL(lines 24 38) no Hoare annotation was computed. [2021-02-23 13:55:02,415 INFO L189 CegarLoopUtils]: For program point L36(line 36) no Hoare annotation was computed. [2021-02-23 13:55:02,415 INFO L189 CegarLoopUtils]: For program point L18-2(lines 17 22) no Hoare annotation was computed. [2021-02-23 13:55:02,416 INFO L192 CegarLoopUtils]: At program point __VERIFIER_assertENTRY(lines 17 22) the Hoare annotation is: true [2021-02-23 13:55:02,416 INFO L189 CegarLoopUtils]: For program point __VERIFIER_assertEXIT(lines 17 22) no Hoare annotation was computed. [2021-02-23 13:55:02,416 INFO L189 CegarLoopUtils]: For program point L19(line 19) no Hoare annotation was computed. [2021-02-23 13:55:02,416 INFO L189 CegarLoopUtils]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-02-23 13:55:02,416 INFO L189 CegarLoopUtils]: For program point L18(lines 18 20) no Hoare annotation was computed. [2021-02-23 13:55:02,434 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 01:55:02 BoogieIcfgContainer [2021-02-23 13:55:02,434 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 13:55:02,436 INFO L168 Benchmark]: Toolchain (without parser) took 3323.23 ms. Allocated memory was 158.3 MB in the beginning and 205.5 MB in the end (delta: 47.2 MB). Free memory was 132.9 MB in the beginning and 169.9 MB in the end (delta: -37.0 MB). Peak memory consumption was 82.1 MB. Max. memory is 8.0 GB. [2021-02-23 13:55:02,436 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 158.3 MB. Free memory was 141.9 MB in the beginning and 141.9 MB in the end (delta: 2.0 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-23 13:55:02,437 INFO L168 Benchmark]: CACSL2BoogieTranslator took 282.25 ms. Allocated memory is still 158.3 MB. Free memory was 131.8 MB in the beginning and 122.2 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-23 13:55:02,438 INFO L168 Benchmark]: Boogie Preprocessor took 40.81 ms. Allocated memory is still 158.3 MB. Free memory was 122.2 MB in the beginning and 120.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-23 13:55:02,438 INFO L168 Benchmark]: RCFGBuilder took 607.85 ms. Allocated memory is still 158.3 MB. Free memory was 120.8 MB in the beginning and 133.8 MB in the end (delta: -13.0 MB). Peak memory consumption was 12.3 MB. Max. memory is 8.0 GB. [2021-02-23 13:55:02,439 INFO L168 Benchmark]: TraceAbstraction took 2371.26 ms. Allocated memory was 158.3 MB in the beginning and 205.5 MB in the end (delta: 47.2 MB). Free memory was 133.5 MB in the beginning and 169.9 MB in the end (delta: -36.5 MB). Peak memory consumption was 81.3 MB. Max. memory is 8.0 GB. [2021-02-23 13:55:02,442 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 158.3 MB. Free memory was 141.9 MB in the beginning and 141.9 MB in the end (delta: 2.0 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 282.25 ms. Allocated memory is still 158.3 MB. Free memory was 131.8 MB in the beginning and 122.2 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 40.81 ms. Allocated memory is still 158.3 MB. Free memory was 122.2 MB in the beginning and 120.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 607.85 ms. Allocated memory is still 158.3 MB. Free memory was 120.8 MB in the beginning and 133.8 MB in the end (delta: -13.0 MB). Peak memory consumption was 12.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2371.26 ms. Allocated memory was 158.3 MB in the beginning and 205.5 MB in the end (delta: 47.2 MB). Free memory was 133.5 MB in the beginning and 169.9 MB in the end (delta: -36.5 MB). Peak memory consumption was 81.3 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: 32]: Loop Invariant Derived loop invariant: (a + b <= res + cnt && res < a + b + 1) && res + cnt <= a + b - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 28 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.0s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 39 SDtfs, 38 SDslu, 54 SDs, 0 SdLazy, 93 SolverSat, 17 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 45 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 10 PreInvPairs, 15 NumberOfFragments, 62 HoareAnnotationTreeSize, 10 FomulaSimplifications, 56 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 301 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 54 NumberOfCodeBlocks, 54 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 50 ConstructedInterpolants, 0 QuantifiedInterpolants, 3038 SizeOfPredicates, 2 NumberOfNonLiveVariables, 89 ConjunctsInSsa, 15 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 0/2 InterpolantCoveringCapability, 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...