/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-b7b32d2 [2021-02-19 18:01:30,172 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-19 18:01:30,176 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-19 18:01:30,227 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-19 18:01:30,255 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-19 18:01:30,258 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-19 18:01:30,260 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-19 18:01:30,262 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-19 18:01:30,274 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-19 18:01:30,275 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-19 18:01:30,277 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-19 18:01:30,279 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-19 18:01:30,281 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-19 18:01:30,284 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-19 18:01:30,289 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-19 18:01:30,290 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-19 18:01:30,294 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-19 18:01:30,307 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-19 18:01:30,308 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-19 18:01:30,309 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-19 18:01:30,314 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 [2021-02-19 18:01:30,364 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-19 18:01:30,365 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-19 18:01:30,369 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-02-19 18:01:30,370 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-02-19 18:01:30,370 INFO L138 SettingsManager]: * Use SBE=true [2021-02-19 18:01:30,370 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-19 18:01:30,370 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-19 18:01:30,370 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-19 18:01:30,371 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-19 18:01:30,371 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-19 18:01:30,372 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-19 18:01:30,372 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-19 18:01:30,373 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-19 18:01:30,373 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-19 18:01:30,373 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-19 18:01:30,373 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-19 18:01:30,373 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-19 18:01:30,374 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-19 18:01:30,374 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-02-19 18:01:30,374 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-19 18:01:30,375 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-19 18:01:30,375 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-19 18:01:30,375 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-02-19 18:01:30,375 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-02-19 18:01:30,376 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-02-19 18:01:30,376 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-02-19 18:01:30,376 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-19 18:01:30,376 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-02-19 18:01:30,376 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-19 18:01:30,747 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-19 18:01:30,772 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-19 18:01:30,775 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-19 18:01:30,776 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-19 18:01:30,777 INFO L275 PluginConnector]: CDTParser initialized [2021-02-19 18:01:30,778 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/hhk2008.i [2021-02-19 18:01:30,861 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ef356ef9d/a63ccecf427e4018bde50a2e5b2f7cfa/FLAGe12d5dd95 [2021-02-19 18:01:31,529 INFO L306 CDTParser]: Found 1 translation units. [2021-02-19 18:01:31,530 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/hhk2008.i [2021-02-19 18:01:31,538 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ef356ef9d/a63ccecf427e4018bde50a2e5b2f7cfa/FLAGe12d5dd95 [2021-02-19 18:01:31,933 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ef356ef9d/a63ccecf427e4018bde50a2e5b2f7cfa [2021-02-19 18:01:31,937 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-19 18:01:31,952 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-19 18:01:31,957 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-19 18:01:31,957 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-19 18:01:31,961 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-19 18:01:31,963 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.02 06:01:31" (1/1) ... [2021-02-19 18:01:31,966 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50189761 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 06:01:31, skipping insertion in model container [2021-02-19 18:01:31,966 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.02 06:01:31" (1/1) ... [2021-02-19 18:01:31,976 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-19 18:01:31,997 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-19 18:01:32,179 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] [2021-02-19 18:01:32,191 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-19 18:01:32,202 INFO L203 MainTranslator]: Completed pre-run [2021-02-19 18:01:32,218 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] [2021-02-19 18:01:32,226 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-19 18:01:32,242 INFO L208 MainTranslator]: Completed translation [2021-02-19 18:01:32,243 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 06:01:32 WrapperNode [2021-02-19 18:01:32,243 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-19 18:01:32,244 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-19 18:01:32,244 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-19 18:01:32,244 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-19 18:01:32,257 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 06:01:32" (1/1) ... [2021-02-19 18:01:32,257 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 06:01:32" (1/1) ... [2021-02-19 18:01:32,264 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 06:01:32" (1/1) ... [2021-02-19 18:01:32,265 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 06:01:32" (1/1) ... [2021-02-19 18:01:32,270 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 06:01:32" (1/1) ... [2021-02-19 18:01:32,275 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 06:01:32" (1/1) ... [2021-02-19 18:01:32,276 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 06:01:32" (1/1) ... [2021-02-19 18:01:32,279 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-19 18:01:32,279 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-19 18:01:32,280 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-19 18:01:32,280 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-19 18:01:32,281 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 06:01:32" (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 [2021-02-19 18:01:32,390 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-19 18:01:32,390 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-19 18:01:32,390 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-19 18:01:32,390 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-19 18:01:32,390 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-19 18:01:32,391 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-19 18:01:32,391 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-19 18:01:32,391 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-19 18:01:32,391 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-02-19 18:01:32,391 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-02-19 18:01:32,391 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-19 18:01:32,392 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-19 18:01:32,392 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-19 18:01:32,392 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-19 18:01:32,392 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-19 18:01:32,392 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-19 18:01:32,392 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-19 18:01:32,392 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-19 18:01:32,393 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-19 18:01:32,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-19 18:01:32,393 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-19 18:01:32,393 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-19 18:01:32,629 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-19 18:01:32,629 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-02-19 18:01:32,631 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.02 06:01:32 BoogieIcfgContainer [2021-02-19 18:01:32,631 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-19 18:01:32,633 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-19 18:01:32,633 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-19 18:01:32,636 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-19 18:01:32,637 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.02 06:01:31" (1/3) ... [2021-02-19 18:01:32,637 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33ffbe82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.02 06:01:32, skipping insertion in model container [2021-02-19 18:01:32,638 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 06:01:32" (2/3) ... [2021-02-19 18:01:32,638 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33ffbe82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.02 06:01:32, skipping insertion in model container [2021-02-19 18:01:32,638 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.02 06:01:32" (3/3) ... [2021-02-19 18:01:32,640 INFO L111 eAbstractionObserver]: Analyzing ICFG hhk2008.i [2021-02-19 18:01:32,646 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-02-19 18:01:32,652 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-19 18:01:32,674 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-19 18:01:32,740 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-19 18:01:32,740 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-19 18:01:32,741 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-02-19 18:01:32,741 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-19 18:01:32,741 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-19 18:01:32,741 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-19 18:01:32,741 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-19 18:01:32,741 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-19 18:01:32,763 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2021-02-19 18:01:32,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-02-19 18:01:32,788 INFO L414 BasicCegarLoop]: Found error trace [2021-02-19 18:01:32,789 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 18:01:32,789 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-19 18:01:32,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 18:01:32,805 INFO L82 PathProgramCache]: Analyzing trace with hash 499112448, now seen corresponding path program 1 times [2021-02-19 18:01:32,815 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 18:01:32,816 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001983416] [2021-02-19 18:01:32,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 18:01:32,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 18:01:33,088 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:01:33,090 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 18:01:33,092 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:01:33,093 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 18:01:33,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-19 18:01:33,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 18:01:33,195 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:01:33,196 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 18:01:33,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 18:01:33,203 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001983416] [2021-02-19 18:01:33,205 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 18:01:33,205 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-19 18:01:33,206 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835056477] [2021-02-19 18:01:33,211 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-19 18:01:33,212 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 18:01:33,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-19 18:01:33,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-19 18:01:33,242 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 3 states. [2021-02-19 18:01:33,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 18:01:33,333 INFO L93 Difference]: Finished difference Result 33 states and 38 transitions. [2021-02-19 18:01:33,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-19 18:01:33,337 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2021-02-19 18:01:33,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 18:01:33,346 INFO L225 Difference]: With dead ends: 33 [2021-02-19 18:01:33,346 INFO L226 Difference]: Without dead ends: 14 [2021-02-19 18:01:33,351 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 [2021-02-19 18:01:33,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-02-19 18:01:33,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-02-19 18:01:33,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2021-02-19 18:01:33,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2021-02-19 18:01:33,400 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 13 [2021-02-19 18:01:33,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 18:01:33,401 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2021-02-19 18:01:33,401 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-19 18:01:33,401 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2021-02-19 18:01:33,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-02-19 18:01:33,402 INFO L414 BasicCegarLoop]: Found error trace [2021-02-19 18:01:33,402 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 18:01:33,403 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-19 18:01:33,403 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-19 18:01:33,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 18:01:33,404 INFO L82 PathProgramCache]: Analyzing trace with hash 495418364, now seen corresponding path program 1 times [2021-02-19 18:01:33,404 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 18:01:33,406 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566328447] [2021-02-19 18:01:33,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 18:01:33,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 18:01:33,557 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:01:33,558 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 18:01:33,574 WARN L141 QuantifierPusher]: treesize reduction 13, result has 60.6 percent of original size [2021-02-19 18:01:33,577 WARN L147 QuantifierPusher]: treesize reduction 13, result has 60.6 percent of original size 20 [2021-02-19 18:01:33,601 WARN L141 QuantifierPusher]: treesize reduction 13, result has 48.0 percent of original size [2021-02-19 18:01:33,603 WARN L147 QuantifierPusher]: treesize reduction 13, result has 48.0 percent of original size 12 [2021-02-19 18:01:33,615 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:01:33,617 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-19 18:01:33,627 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:01:33,627 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-19 18:01:33,635 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:01:33,636 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 18:01:33,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-19 18:01:33,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 18:01:33,688 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:01:33,689 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 18:01:33,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 18:01:33,693 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566328447] [2021-02-19 18:01:33,693 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 18:01:33,693 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-19 18:01:33,693 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168591190] [2021-02-19 18:01:33,695 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-19 18:01:33,696 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 18:01:33,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-19 18:01:33,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-02-19 18:01:33,698 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 7 states. [2021-02-19 18:01:33,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 18:01:33,927 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2021-02-19 18:01:33,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-19 18:01:33,928 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2021-02-19 18:01:33,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 18:01:33,929 INFO L225 Difference]: With dead ends: 20 [2021-02-19 18:01:33,929 INFO L226 Difference]: Without dead ends: 15 [2021-02-19 18:01:33,930 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-02-19 18:01:33,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-02-19 18:01:33,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-02-19 18:01:33,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2021-02-19 18:01:33,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2021-02-19 18:01:33,938 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 13 [2021-02-19 18:01:33,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 18:01:33,938 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2021-02-19 18:01:33,938 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-19 18:01:33,938 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2021-02-19 18:01:33,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-02-19 18:01:33,939 INFO L414 BasicCegarLoop]: Found error trace [2021-02-19 18:01:33,939 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 18:01:33,940 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-19 18:01:33,940 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-19 18:01:33,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 18:01:33,941 INFO L82 PathProgramCache]: Analyzing trace with hash -1787404818, now seen corresponding path program 1 times [2021-02-19 18:01:33,941 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 18:01:33,941 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865894222] [2021-02-19 18:01:33,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 18:01:33,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 18:01:33,984 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:01:33,985 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 18:01:33,986 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:01:33,987 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-19 18:01:34,003 WARN L141 QuantifierPusher]: treesize reduction 13, result has 60.6 percent of original size [2021-02-19 18:01:34,004 WARN L147 QuantifierPusher]: treesize reduction 13, result has 60.6 percent of original size 20 [2021-02-19 18:01:34,021 WARN L141 QuantifierPusher]: treesize reduction 13, result has 48.0 percent of original size [2021-02-19 18:01:34,023 WARN L147 QuantifierPusher]: treesize reduction 13, result has 48.0 percent of original size 12 [2021-02-19 18:01:34,037 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:01:34,038 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-19 18:01:34,049 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:01:34,049 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-19 18:01:34,062 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:01:34,063 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 18:01:34,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-19 18:01:34,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 18:01:34,115 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:01:34,115 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 18:01:34,119 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 18:01:34,120 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865894222] [2021-02-19 18:01:34,120 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [193329697] [2021-02-19 18:01:34,120 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 [2021-02-19 18:01:34,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 18:01:34,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 15 conjunts are in the unsatisfiable core [2021-02-19 18:01:34,217 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 18:01:34,226 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:01:34,227 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 18:01:34,227 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:01:34,228 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 18:01:34,228 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:01:34,229 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 18:01:34,230 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:01:34,231 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 18:01:34,232 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:01:34,232 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 18:01:34,234 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:01:34,234 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 18:01:34,235 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:01:34,235 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 18:01:34,236 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:01:34,236 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 18:01:34,237 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:01:34,238 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 18:01:34,239 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:01:34,240 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 18:01:34,240 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:01:34,241 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 18:01:34,241 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:01:34,242 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 18:01:34,244 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:01:34,245 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 18:01:34,245 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:01:34,246 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 18:01:34,247 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:01:34,247 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 18:01:34,248 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:01:34,248 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 18:01:34,251 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:01:34,252 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 18:01:34,252 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:01:34,253 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 18:01:34,253 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:01:34,254 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 18:01:34,255 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:01:34,255 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 18:01:34,256 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:01:34,256 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 18:01:34,257 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:01:34,258 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 18:01:34,258 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:01:34,259 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 18:01:34,260 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:01:34,260 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 18:01:34,261 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:01:34,262 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 18:01:34,262 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:01:34,263 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 18:01:34,263 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:01:34,264 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 18:01:34,264 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:01:34,264 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 18:01:34,266 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:01:34,266 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-19 18:01:34,267 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:01:34,268 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-19 18:01:34,269 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:01:34,270 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-19 18:01:34,271 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:01:34,273 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-19 18:01:34,290 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:01:34,303 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-02-19 18:01:34,304 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:01:34,305 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-02-19 18:01:34,307 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:01:34,308 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-02-19 18:01:34,310 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:01:34,310 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-02-19 18:01:34,330 WARN L141 QuantifierPusher]: treesize reduction 1, result has 94.4 percent of original size [2021-02-19 18:01:34,331 WARN L147 QuantifierPusher]: treesize reduction 1, result has 94.4 percent of original size 17 [2021-02-19 18:01:34,332 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:01:34,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-19 18:01:34,340 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:01:34,341 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-19 18:01:34,342 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-02-19 18:01:34,344 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:01:34,354 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-19 18:01:34,356 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:01:34,358 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-02-19 18:01:34,378 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:01:34,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-19 18:01:34,384 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:01:34,385 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-02-19 18:01:34,386 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-02-19 18:01:34,389 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:01:34,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-19 18:01:34,391 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:01:34,392 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-02-19 18:01:34,393 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-19 18:01:34,395 WARN L141 QuantifierPusher]: treesize reduction 6, result has 80.0 percent of original size [2021-02-19 18:01:34,399 INFO L723 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-02-19 18:01:34,404 INFO L730 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:01:34,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-19 18:01:34,406 WARN L141 QuantifierPusher]: treesize reduction 6, result has 80.0 percent of original size [2021-02-19 18:01:34,410 WARN L147 QuantifierPusher]: treesize reduction 6, result has 80.0 percent of original size 24 [2021-02-19 18:01:34,412 WARN L147 QuantifierPusher]: treesize reduction 6, result has 80.0 percent of original size 24 [2021-02-19 18:01:34,413 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:01:34,413 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 18:01:34,425 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:01:34,426 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-19 18:01:34,427 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:01:34,427 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-02-19 18:01:34,428 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:01:34,428 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 18:01:34,429 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:01:34,429 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 18:01:34,443 WARN L141 QuantifierPusher]: treesize reduction 6, result has 14.3 percent of original size [2021-02-19 18:01:34,443 WARN L147 QuantifierPusher]: treesize reduction 6, result has 14.3 percent of original size 1 [2021-02-19 18:01:34,445 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:01:34,446 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 18:01:34,447 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:01:34,447 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 18:01:34,448 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:01:34,448 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 18:01:34,449 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 18:01:34,449 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 18:01:34,450 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 13 [2021-02-19 18:01:34,450 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110233196] [2021-02-19 18:01:34,450 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-02-19 18:01:34,451 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 18:01:34,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-02-19 18:01:34,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-02-19 18:01:34,452 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 13 states. [2021-02-19 18:01:34,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 18:01:34,843 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2021-02-19 18:01:34,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-19 18:01:34,843 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 14 [2021-02-19 18:01:34,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 18:01:34,844 INFO L225 Difference]: With dead ends: 17 [2021-02-19 18:01:34,844 INFO L226 Difference]: Without dead ends: 0 [2021-02-19 18:01:34,845 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 [2021-02-19 18:01:34,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-02-19 18:01:34,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-02-19 18:01:34,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-02-19 18:01:34,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-02-19 18:01:34,846 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2021-02-19 18:01:34,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 18:01:34,846 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-02-19 18:01:34,846 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2021-02-19 18:01:34,846 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-02-19 18:01:34,847 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-02-19 18:01:35,061 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-02-19 18:01:35,065 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-02-19 18:01:35,240 INFO L189 CegarLoopUtils]: For program point reach_errorEXIT(line 12) no Hoare annotation was computed. [2021-02-19 18:01:35,240 INFO L189 CegarLoopUtils]: For program point reach_errorENTRY(line 12) no Hoare annotation was computed. [2021-02-19 18:01:35,240 INFO L189 CegarLoopUtils]: For program point L12-1(line 12) no Hoare annotation was computed. [2021-02-19 18:01:35,240 INFO L189 CegarLoopUtils]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2021-02-19 18:01:35,241 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)|)) [2021-02-19 18:01:35,241 INFO L189 CegarLoopUtils]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2021-02-19 18:01:35,241 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-02-19 18:01:35,241 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-19 18:01:35,241 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-02-19 18:01:35,241 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-02-19 18:01:35,241 INFO L189 CegarLoopUtils]: For program point L15(line 15) no Hoare annotation was computed. [2021-02-19 18:01:35,242 INFO L189 CegarLoopUtils]: For program point assume_abort_if_notENTRY(lines 14 16) no Hoare annotation was computed. [2021-02-19 18:01:35,242 INFO L189 CegarLoopUtils]: For program point L15-2(lines 14 16) no Hoare annotation was computed. [2021-02-19 18:01:35,242 INFO L189 CegarLoopUtils]: For program point assume_abort_if_notEXIT(lines 14 16) no Hoare annotation was computed. [2021-02-19 18:01:35,242 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))) [2021-02-19 18:01:35,242 INFO L192 CegarLoopUtils]: At program point mainENTRY(lines 24 38) the Hoare annotation is: true [2021-02-19 18:01:35,242 INFO L189 CegarLoopUtils]: For program point L29(line 29) no Hoare annotation was computed. [2021-02-19 18:01:35,243 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))) [2021-02-19 18:01:35,243 INFO L189 CegarLoopUtils]: For program point L28(line 28) no Hoare annotation was computed. [2021-02-19 18:01:35,243 INFO L189 CegarLoopUtils]: For program point mainEXIT(lines 24 38) no Hoare annotation was computed. [2021-02-19 18:01:35,243 INFO L189 CegarLoopUtils]: For program point mainFINAL(lines 24 38) no Hoare annotation was computed. [2021-02-19 18:01:35,243 INFO L189 CegarLoopUtils]: For program point L36(line 36) no Hoare annotation was computed. [2021-02-19 18:01:35,244 INFO L189 CegarLoopUtils]: For program point L18-2(lines 17 22) no Hoare annotation was computed. [2021-02-19 18:01:35,244 INFO L192 CegarLoopUtils]: At program point __VERIFIER_assertENTRY(lines 17 22) the Hoare annotation is: true [2021-02-19 18:01:35,244 INFO L189 CegarLoopUtils]: For program point __VERIFIER_assertEXIT(lines 17 22) no Hoare annotation was computed. [2021-02-19 18:01:35,244 INFO L189 CegarLoopUtils]: For program point L19(line 19) no Hoare annotation was computed. [2021-02-19 18:01:35,244 INFO L189 CegarLoopUtils]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-02-19 18:01:35,244 INFO L189 CegarLoopUtils]: For program point L18(lines 18 20) no Hoare annotation was computed. [2021-02-19 18:01:35,263 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.02 06:01:35 BoogieIcfgContainer [2021-02-19 18:01:35,264 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-19 18:01:35,266 INFO L168 Benchmark]: Toolchain (without parser) took 3324.93 ms. Allocated memory was 152.0 MB in the beginning and 182.5 MB in the end (delta: 30.4 MB). Free memory was 128.5 MB in the beginning and 135.3 MB in the end (delta: -6.8 MB). Peak memory consumption was 24.7 MB. Max. memory is 8.0 GB. [2021-02-19 18:01:35,270 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 152.0 MB. Free memory is still 124.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-19 18:01:35,270 INFO L168 Benchmark]: CACSL2BoogieTranslator took 286.42 ms. Allocated memory is still 152.0 MB. Free memory was 127.4 MB in the beginning and 117.8 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-19 18:01:35,272 INFO L168 Benchmark]: Boogie Preprocessor took 34.80 ms. Allocated memory is still 152.0 MB. Free memory was 117.8 MB in the beginning and 116.3 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-19 18:01:35,275 INFO L168 Benchmark]: RCFGBuilder took 351.80 ms. Allocated memory is still 152.0 MB. Free memory was 116.3 MB in the beginning and 135.1 MB in the end (delta: -18.9 MB). Peak memory consumption was 17.1 MB. Max. memory is 8.0 GB. [2021-02-19 18:01:35,279 INFO L168 Benchmark]: TraceAbstraction took 2630.66 ms. Allocated memory was 152.0 MB in the beginning and 182.5 MB in the end (delta: 30.4 MB). Free memory was 134.5 MB in the beginning and 135.3 MB in the end (delta: -858.3 kB). Peak memory consumption was 29.6 MB. Max. memory is 8.0 GB. [2021-02-19 18:01:35,285 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 152.0 MB. Free memory is still 124.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 286.42 ms. Allocated memory is still 152.0 MB. Free memory was 127.4 MB in the beginning and 117.8 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 34.80 ms. Allocated memory is still 152.0 MB. Free memory was 117.8 MB in the beginning and 116.3 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 351.80 ms. Allocated memory is still 152.0 MB. Free memory was 116.3 MB in the beginning and 135.1 MB in the end (delta: -18.9 MB). Peak memory consumption was 17.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2630.66 ms. Allocated memory was 152.0 MB in the beginning and 182.5 MB in the end (delta: 30.4 MB). Free memory was 134.5 MB in the beginning and 135.3 MB in the end (delta: -858.3 kB). Peak memory consumption was 29.6 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: 2.3s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.7s, 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, 0.7s 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, 0.8s 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...